Hach 900 MAX User Manual

Catalog Number 8990

Sigma 900 MAX Refrigerated Sampler

INSTRUMENT MANUAL

07/03 4ed

Catalog Number 8990

Sigma 900 MAX Refrigerated Sampler

INSTRUMENT MANUAL

© Hach Company, 2002, 2003. All rights reserved. Printed in the U.S.A.

eac 07/03 4ed

Visit http: //www.hach.com

Table of Contents

Safety Precautions .................................................................................................................................................... 7

Specifications ............................................................................................................................................................ 9

Section 1 Introduction ...................................................................................................................................... 15

1.1 Controller Cover ................................................................................................................................................ 15

1.2 Front Panel........................................................................................................................................................ 15

1.2.1 Keypad Description.................................................................................................................................. 16

1.2.2 Liquid Crystal Display.............................................................................................................................. 16

1.2.3 Internal Humidity Indicator....................................................................................................................... 17

1.3 Interface Connectors......................................................................................................................................... 18

1.3.1 Receptacle Caps ..................................................................................................................................... 18

1.4 Principle of Operation ....................................................................................................................................... 19

1.4.1 Liquid Sensing ......................................................................................................................................... 19

INSTALLATION.................................................................................................................................................... 21

Section 2 Installation......................................................................................................................................... 23

2.1 Unpacking the Instrument ................................................................................................................................. 23

2.2 Selecting the Installation Site ............................................................................................................................ 23

2.3 Installing the Pump Tube in the Sensor Body ................................................................................................... 24

2.3.1 Attaching the Intake Line ......................................................................................................................... 25

2.3.1.1 Attaching the Vinyl Tubing .......................................................................................................... 25

2.3.1.2 Attaching the Teflon®-Lined Tubing ........................................................................................... 25

2.3.2 Setting Up the Intake Line and Strainer................................................................................................... 26

2.4 Choosing Bottle and Retainer Configurations ................................................................................................... 26

2.5 Setting Up the Bottles ....................................................................................................................................... 27

2.5.1 One-Bottle Sampling ............................................................................................................................... 27

2.5.2 Two- and Four-bottle Sampling................................................................................................................ 27

2.5.3 Eight-, 12-, or 24-bottle Sampling ............................................................................................................ 28

2.6 Installing the Distributor (Multiple Bottle Operation).......................................................................................... 29

2.6.1 Distributor Arm Alignment........................................................................................................................ 30

2.7 Installing the Full-Bottle Shut-Off Device (Single Bottle Operation) .................................................................. 31

2.8 Power Connections ........................................................................................................................................... 31

2.9 Auxiliary Receptacle Pin Identification .............................................................................................................. 32

2.9.1 Splitter Interface....................................................................................................................................... 33

OPERATION......................................................................................................................................................... 35

Section 3 Basic Programming Setup............................................................................................................ 37

3.1 Initial Power-Up of Sampler............................................................................................................................... 37

3.2 Basic Programming Setup ................................................................................................................................ 37

3.3 Advanced Sampling .......................................................................................................................................... 49

Section 4 Sensor Setup.................................................................................................................................... 61

4.1 Downlook Ultrasonic Sensor ............................................................................................................................. 61

4.1.1 Downlook Ultrasonic Sensor Connection ................................................................................................ 61

4.1.2 Downlook Ultrasonic Sensor Programming ............................................................................................. 61

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8990TOC.fm Table of Contents

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4.1.3 Downlook Ultrasonic Sensor Calibration ................................................................................................. 61

4.1.3.1 Liquid Depth................................................................................................................................ 61

4.1.3.2 Sensor Height ............................................................................................................................. 62

4.1.3.3 Setting the Invisible Range ......................................................................................................... 62

4.2 Submerged Area/Velocity Sensor ..................................................................................................................... 63

4.2.1 Submerged Area/Velocity Sensor Connection......................................................................................... 63

4.2.2 Submerged Area/Velocity Sensor Programming ..................................................................................... 63

4.2.3 Submerged Area/Velocity Submerged Area/Velocity Sensor Calibration ................................................ 64

4.3 Submerged Pressure Sensor............................................................................................................................ 65

4.3.1 Submerged Pressure Sensor Connection ............................................................................................... 65

4.3.2 Submerged Pressure Sensor Programming............................................................................................ 66

4.3.3 Submerged Pressure Sensor Calibration ................................................................................................ 66

Section 5 Optional Device Installation.......................................................................................................... 69

5.1 Rain Gauge ....................................................................................................................................................... 69

5.1.1 Rain Gauge Programming ....................................................................................................................... 70

5.2 pH Probe........................................................................................................................................................... 70

5.2.1 pH Probe Connection .............................................................................................................................. 70

5.2.2 pH Probe Programming ........................................................................................................................... 71

5.2.3 pH Probe Calibration ............................................................................................................................... 71

5.3 ORP Probe........................................................................................................................................................ 72

5.3.1 ORP Probe Connection ........................................................................................................................... 72

5.3.2 ORP Probe Programming........................................................................................................................ 73

5.3.3 ORP Probe Calibration ............................................................................................................................ 73

5.3.3.1 ORP Preamplifier/Junction Box Calibration ................................................................................ 73

5.4 Dissolved Oxygen Probe................................................................................................................................... 74

5.4.1 Dissolved Oxygen Probe Connection ...................................................................................................... 74

5.4.2 Dissolved Oxygen Probe Programming................................................................................................... 74

5.4.3 Dissolved Oxygen Probe Temperature Programming ............................................................................. 75

5.4.4 Dissolved Oxygen Probe Calibration ....................................................................................................... 75

5.5 Conductivity Probe ............................................................................................................................................ 76

5.5.1 Conductivity Probe Connection ............................................................................................................... 76

5.5.2 Conductivity Probe Programming ............................................................................................................ 76

5.5.3 Conductivity Temperature Programming ................................................................................................. 76

5.5.4 Conductivity Probe Calibration ................................................................................................................ 77

Section 6 Communication Setup.................................................................................................................... 79

6.1 RS232 Cable..................................................................................................................................................... 79

6.1.1 RS232 Connection .................................................................................................................................. 79

6.1.2 RS232 Programming ............................................................................................................................... 79

6.2 Modem .............................................................................................................................................................. 80

6.2.1 Modem Connection ................................................................................................................................. 80

6.2.2 Modem Programming .............................................................................................................................. 80

6.2.2.1 Cellular Communication Option .................................................................................................. 81

6.2.2.2 Reliable Communications ........................................................................................................... 82

6.2.2.3 Cellular Modem Scheduling........................................................................................................ 82

6.2.2.4 Cellular Modem Scheduling Basis .............................................................................................. 83

6.2.2.5 Cellular Modem Triggering ......................................................................................................... 84

6.2.2.6 Pager Option............................................................................................................................... 84

6.2.2.7 Reporting Devices ...................................................................................................................... 85

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8990TOC.fm

Table of Contents

6.3 4–20 mA Option ................................................................................................................................................ 87

6.3.1 4–20 mA Connection ............................................................................................................................... 87

6.3.2 4–20 mA Programming............................................................................................................................ 87

6.3.3 4–20 mA Calibration ................................................................................................................................ 88

6.4 Alarm Relays..................................................................................................................................................... 89

6.4.1 Alarm Relays Connection ........................................................................................................................ 90

6.4.2 Alarm Relays Programming..................................................................................................................... 91

6.4.2.1 Trouble Alarms ........................................................................................................................... 91

6.4.2.2 Set Point Alarms ......................................................................................................................... 91

6.5 Analog Inputs .................................................................................................................................................... 93

6.5.1 Analog Inputs Connection ....................................................................................................................... 93

6.5.2 Analog Inputs Programming .................................................................................................................... 94

MAINTENANCE................................................................................................................................................... 95

Section 7 Maintenance ..................................................................................................................................... 97

7.1 Cleaning the Sampler ....................................................................................................................................... 97

7.1.1 Cleaning the Sampler Cabinet................................................................................................................. 97

7.1.2 Cleaning the Sample Bottles ................................................................................................................... 97

7.1.3 Cleaning the Intake Tubing and Pump Tubing ......................................................................................... 97

7.1.4 No Lubrication Required .......................................................................................................................... 97

7.2 Pump Tubing Maintenance................................................................................................................................ 97

7.2.1 Tubing Life Estimates............................................................................................................................... 97

7.2.2 Replacing Pump Tubing........................................................................................................................... 98

7.3 Upgrades, Repairs, General Maintenance ........................................................................................................ 98

Electrostatic Discharge (ESD) Considerations ................................................................................................. 99

7.4 Internal Maintenance Items............................................................................................................................... 99

7.5 Removing and Opening the Controller.............................................................................................................. 99

7.6 Re-installing the Bottom Panel........................................................................................................................ 100

7.7 Circuit Board Identification .............................................................................................................................. 101

7.8 Replacing the Fuse ......................................................................................................................................... 103

7.9 Motor/Gear Box............................................................................................................................................... 103

7.10 Internal Desiccant Module ............................................................................................................................ 103

7.10.1 Replacing the Desiccant...................................................................................................................... 103

7.11 Memory Battery ............................................................................................................................................ 104

Appendix A Quick Start Guides ......................................................................................................................... 105

Sigma 900 MAX Refrigerated Sampler Main Menu Flow Chart ..................................................................... 105

Sigma 900 MAX Refrigerated Sampler Setup Flow Chart.............................................................................. 106

Sigma 900 MAX Refrigerated Sampler Options Flow Chart........................................................................... 107

Sigma 900 MAX Refrigerated Sampler Advanced Sampling Flow Chart ....................................................... 108

Sigma 900 MAX Refrigerated Sampler Alarms Flow Chart ............................................................................ 109

Sigma 900 MAX Refrigerated Sampler Calibration Flow Chart (1 of 2) ......................................................... 110

Sigma 900 MAX Refrigerated Sampler Calibration Flow Chart (2 of 2) ......................................................... 111

Appendix B Programming Features .................................................................................................................. 113

Review All Items ............................................................................................................................................. 113

Running a Program ........................................................................................................................................ 113

Displaying Data .............................................................................................................................................. 113

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8990TOC.fm Table of Contents

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Selecting the Channel .................................................................................................................................... 114

Tabular or Graph Format ................................................................................................................................ 114

Graph Manipulation ........................................................................................................................................ 115

Graphic Display Averaging ............................................................................................................................. 115

Sample History ............................................................................................................................................... 115

Options Menu Features .................................................................................................................................. 116

Setting the Time and Date.............................................................................................................................. 116

Volume Calibration ......................................................................................................................................... 116

Data Log ......................................................................................................................................................... 119

Logging Intervals ............................................................................................................................................ 119

Dynamic Memory Allocation ........................................................................................................................... 120

Data Logging Configuration ............................................................................................................................ 121

Diagnostics ..................................................................................................................................................... 121

Load Program................................................................................................................................................. 124

Screen Saver Mode ........................................................................................................................................ 124

Flow Totalizer ................................................................................................................................................. 125

Appendix C Troubleshooting and Error Messages............................................................................................ 127

Error Messages .............................................................................................................................................. 127

Trouble Alarm Conditions, Causes, and Solutions ......................................................................................... 129

Downlook Ultrasonic Sensor Troubleshooting................................................................................................ 130

pH Troubleshooting ........................................................................................................................................ 131

Sigma 900 MAX Refrigerated Sampler Troubleshooting Issues .................................................................... 132

Appendix D How to Calculate Pulses/Counts.................................................................................................... 133

Appendix E Exploded Drawings ........................................................................................................................ 137

Sigma 900 MAX Refrigerated Sampler Assembly Drawing (1 of 3) ............................................................... 137

Sigma 900 MAX Refrigerated Sampler Assembly Drawing (2 of 3) ............................................................... 138

Sigma 900 MAX Refrigerated Sampler Assembly Drawing (3 of 3) ............................................................... 139

Sigma 900 MAX Refrigerated Composite Sampler Assembly........................................................................ 140

Sigma 900 Composite Refrigerator Assembly................................................................................................ 141

Sigma 900 MAX Refrigerated Discrete Sampler Assembly............................................................................ 142

Sigma 900 Discrete Refrigerator Assembly.................................................................................................... 143

Transition Tray Assembly ............................................................................................................................... 144

Sigma 900 MAX Refrigerated Sampler Reference Dimensions ..................................................................... 145

GENERAL INFORMATION .............................................................................................................................. 147

Parts and Accessories .......................................................................................................................................... 149

Contact Information for U.S.A. and Outside Europe ............................................................................................. 153

Contact Information for Europe............................................................................................................................. 154

Warranty ............................................................................................................................................................... 155

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Table of Contents

8990TOC.fm

Safety Precautions

Please read this entire manual before unpacking, setting up, or operating this instrument.

Pay particular attention to all danger and caution statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.

To ensure the protection provided by this equipment is not impaired, do not use or install this equipment in any
manner other than that which is specified in this manual.

Use of Hazard Information

If multiple hazards exist, this manual will use the signal word (Danger, Caution, Note) corresponding to the
greatest hazard.

DANGER
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in
death or serious injury.

CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate injury.

NOTE
Information that requires special emphasis.

Precautionary Labels

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if
not observed.

This symbol, if noted on the instrument, references the instruction manual for operation
and/or safety information.

This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical shock
and/or electrocution exists and indicates that only individuals qualified to work with hazardous voltages
should open the enclosure or remove the barrier.

This symbol, when noted on the product, identifies the location of a fuse or current limiting device.

This symbol, when noted on the product, indicates that the marked item can be hot and should not be
touched without care.

This symbol, when noted on the product, indicates the presence of devices sensitive to Electro-static
Discharge and indicates that care must be taken to prevent damage to them.

This symbol, when noted on the product, identifies a risk of chemical harm and indicates that only
individuals qualified and trained to work with chemicals should handle chemicals or perform
maintenance on chemical delivery systems associated with the equipment.

This symbol, if noted on the product, indicates the need for protective eye wear.

This symbol, when noted on the product, identifies the location of the connection for Protective Earth
(ground).

Page 7

8990saf.fm Safety Precautions

Safety Precautions

Hazardous Locations

The Sigma 900 MAX Refrigerated Sampler is not approved for use in
hazardous locations as defined in the National Electrical Code.

DANGER
Although some Sigma products
are designed and certified for
installation in hazardous
locations as defined by the
National Electrical Code, many
Sigma products are not suitable
for use in hazardous locations. It
is the responsibility of the
individuals who are installing the
products in hazardous locations
to determine the acceptability of
the product for the environment.
Additionally, to ensure safety, the
installation of instrumentation in
hazardous locations must be per
the manufacturer's control
drawing specifications. Any
modification to the
instrumentation or the
installation is not recommended
and may result in life threatening
injury and/or damage to facilities.

Confined Space Entry

DANGER

Bien que certains produits Sigma soient conçus et certifiés pour être installés
dans des endroits dangereux tels que définis par le National Electric Code, de
nombreux produits Sigma ne conviennent pas pour de tels endroits. Il relève de
la responsabilité des personnes qui placent les produits dans des endroits
dangereux de déterminer s'ils sont adaptés à cet environnement. En outre, à des
fins de sécurité, le placement de machines dans des endroits dangereux doit
s'effectuer dans le respect des consignes des schémas de contrôle du fabricant.
Toute modification apportée aux machines ou tout déplacement de celles-ci est
déconseillé, car susceptible de provoquer des accidents matériels et/ou
corporels.

Important Note: The following

information is provided to guide
users of samplers on the dangers
and risks associated with entry into
confined spaces.

On April 15, 1993, OSHA's final ruling on CFR 1910.146, Permit Required
Confined Spaces, became law. This new standard directly affects more than
250,000 industrial sites in the United States and was created to protect the
health and safety of workers in confined spaces.

Definition of Confined Space

A Confined Space is any location or enclosure that presents or has the
immediate potential to present one or more of the following conditions:

• An atmosphere with less than 19.5% or greater than 23.5% oxygen
and/or more than 10 ppm Hydrogen Sulfide (H

• An atmosphere that may be flammable or explosive due to gases, vapors,
mists, dusts, or fibers

• Toxic materials which upon contact or inhalation, could result in injury,
impairment of health, or death

Confined spaces are not designed for human occupancy. They have restricted
entry and contain known or potential hazards. Examples of confined spaces
include manholes, stacks, pipes, vats, switch vaults, and other similar
locations.

Standard safety procedures must always be followed prior to entry into
confined spaces and/or locations where hazardous gases, vapors, mists,
dusts, or fibers may be present. Before entering any confined space check
with your employer for procedures related to confined space entry

S)

2

Page 8
Safety Precautions

8990saf.fm

Specifications

Specifications are subject to change without notice.

General

Dimensions Width 61 cm (24 in.), Depth 61 cm (24 in.), Height 110 cm (43.5 in.), Weight 63.3 kg (140 lb)

Cabinet Fiberglass reinforced plastic with beige UV inhibited polymer laminate.

Temperature Range

Recovery Time

Pull-Down Time From 24 °C (75 °F) to 4 °C (39 °F), 15 minutes.

Thermal System

Power Requirements

Optional ac
Power Backup
(Pump Controller Only)

Internal Battery

Control Panel

Data Logging

Set Point Sample Trigger

Sampling Modes

Program Delay

Overload Protection

Diagnostics Tests keypad, display, ROM, pump, liquid sensors, velocity signal, and distributor.

-29 to +50 °C (-20 to 122 °F); With optional controller compartment heater, -40 to +50 °C
(-40 to 122 °F).

With door open one minute in 24 °C (75 °F) ambient and 4 °C sample temperature, 5
minutes.

Top mounted compressor/condenser with fan forced air cooled condenser; three-sided
wrap-around evaporator plate; 2 in. rigid foam insulation; microprocessor controlled
thermostat maintains sample liquid at 4 °C (±1 °C); frost free; compression gasket door seal;
refrigeration components and plumbing are corrosion protected with conformal coating.

115 V ac, 60 Hz (230 and 100 V ac optional); Compressor Running Amperage 1.5–2.0 A.
Locked rotor current 12 amps. Installation Category II.

Pump/Controller Only: Rechargeable 6 amp-hour gel lead acid battery takes over
automatically with ac line power failure. Integral trickle charger maintains battery at full
charge (factory installed option).

Two C cell alkaline batteries; maintains program logic and real time clock for five years.
Internal battery current draws less than 40 micro amps.

21 key membrane switch keypad with 4 multiple function soft keys; 8 line x 40 character
alphanumeric, back lit liquid crystal graphics display. Self prompting/menu driven program.

Records program start time and date, stores up to 400 sample collection times/dates, all
program entries, operational status including number of minutes or pulses to next sample,
bottle number, number of samples collected, number remaining, sample identification
number, and all logged data (i.e. level, flow, pH, stream temperature, refrigerated
compartment sample temperature, ORP, rainfall, and any externally logged data - up to 7
external channels). Also, up to 200 events are logged, including alarm conditions, program
run/stop events, etc.

When equipped with integral flow meter, pH/temperature/ORP meter, conductivity, and/or
D.O. monitoring options, sampling can be triggered upon an upset condition when field
selectable limits are exceeded. Concurrent with normal sampling routine, sample liquid is
deposited in designated “trouble bottle(s)”.

Multiple Bottle Time, Multiple Bottle Flow, Composite Multiple Bottle Time, Composite
Multiple Bottle Flow, Composite Time, Composite Flow, Flow with Time Override, Variable
Interval, Start/Stop, and Level Actuation.

Three formats: (1) 1-9,999 minutes or flow pulses in one unit increments (2) programmable
sampler start time/date, and (3) programmable time/day of week.

Controller: 5 amp dc line fuse. Compressor: Thermal overload relay opens at
110 °C (230 °F).

Program Lock Access code protection precludes tampering.

Communications

EPROM Flash Memory Via RS232. Permits embedded software upgrades in the field.

Serial Interface RS232 compatible; allows on-site collection of stored data.

Modem (optional)

Pager Alarm codes sent to up to three separate pagers’ telephone numbers.

8990spc.fm Specifications

14400, V.32 bis, V.42, MNP2-4 error correction. V.42 bis MNP5 data compression.
MNP10-EC Cellular Protocol.

Page 9

Specifications

Sample Bottle Capacity

Single Bottle Mode 6 gal polyethylene (with polypropylene cap)

Two Bottle Sampling: Set of two 2.5 gal glass (with Teflon®-lined lid) or
3 gal polyethylene bottle (with polypropylene cap)

Four Bottle Sampling: Set of four 2.5 gal glass (with Teflon-lined lid) or

Multiple Bottle Mode

Sampling Features

Multiple Programs Stores up to five separate sampling programs.

3 gal polyethylene bottles (with polypropylene cap)

Eight Bottle Sampling: Set of eight 1.9 liter glass bottles (with Teflon-lined lid) or

2.3 L polyethylene bottles (with polypropylene cap)

Twenty-four Bottle Sampling: Set of twenty-four 350 mL glass bottles (with Teflon-lined lid) or
1000 mL polyethylene bottles (with polypropylene cap)

Cascade

Allows using two samplers in combination where the first sampler at the completion of the
program initiates the second.

When equipped with integral flow meter, pH/temperature/ORP meter, conductivity, and/or

Upset Sampling

D.O. monitoring options, sampling can be triggered upon an upset condition when field
selectable limits are exceeded, concurrent with normal sampling routine, sample liquid is
deposited in designated “trouble bottle(s)”. Can also be triggered from an external trigger.

Status Output

Alerts operator to low main battery, low memory power, plugged intake, jammed distributor
arm, sample collected, and purge failure.

Multiple Bottle Mode: After complete revolution of distributor arm (unless Continuous Mode

Automatic Shutdown

selected). Composite Mode: After preset number of samples have been delivered to
composite container, from 1–999 samples, or upon full container.

Sample Volume Programmed in milliliters, in one mL increments from 10 to 9999 mL.

Sample Volume
Repeatability

±5% typical

Time Proportional Sampling: Selectable in single increments from 1 to 9999 minutes in one
minute increments.
Flow Proportional Sampling: Continuous Volume, Variable Time (CVVT): 1 to 9999 “units” of

Sampling Interval

flow volume, where “units” are whatever is set up for in the integral flow option or -1 to 9999
external-meter flow pulses: (momentary contact closure 25 msec. Or 5–12 V dc pulse;
4–20 mA interface optional)
Flow Proportional Sampling: Constant Time, Variable Volume (CTVV):
Format: 999: 00 hrs:min. Selectable in 1-minute increments of 1 to 59,940 minutes.

Selectable in single increments form 1 to 9,999 flow pulses (momentary contact closure

Interval Between
Samples

25 msec. or 5–10 V dc pulse; 4–20 mA interface optional), or 1 to 9,999 minutes in one
minute increments, or 1 to 9,999,999 “units” of volume, where “units” are whatever is set up
for the integral flow option.

Multiplex (Multiple Bottle
Mode)

Multiple Bottle Mode: Programming allows multiple samples per bottle and/or multiple bottles
per sample collection.

Sample Pump and Strainer

Sample Pump

Pump Body

High speed peristaltic, dual roller, with
pump tube.

Impact/corrosion resistant, glass reinforced Delrin®

3

/8 in. ID by 5/8 in. OD medical grade silicone rubber

Vertical Lift 27 ft maximum (Remote Pump Option recommended for lifts from 22 to 35 ft).

Sample Transport
Velocity

2 fps minimum, at 15 ft vertical lift in a

Pump Flow Rate 60 mL/sec at 3 ft vertical lift in a

3

/8 in. ID intake tube.

3

/8 in. ID intake line.

Liquid Sensor Non-wetted, non-contact, ultrasonic.

Page 10
Specifications

8990spc.fm

Specifications

Intake Purge

Pump/Controller
Housing

Internal Clock Indicates real time and date; 0.007% time base accuracy.

Manual Sample Initiates a sample collection independent of program in progress.

Intake Rinse Intake line automatically rinsed with source liquid prior to each sample, from 0 to 3 rinses.

Intake Retries

Intake Tubing ¼ in. and 3/8 in. ID vinyl or 3/8 in. ID Teflon* lined polyethylene with protective outer cover.

Intake Strainers

Air purged automatically before and after each sample; duration automatically compensates
for varying intake line lengths.

High impact injection molded ABS; submersible, watertight, dust tight, corrosion & ice
resistant; NEMA 4X,6.

Sample collection cycle automatically repeated from 0 to 3 times if sample is not obtained on
initial attempt.

®

Choice of Teflon
and low profile for shallow depth applications.

and 316 stainless construction, and all 316 stainless steel in standard size

Factory Installed Options

pH/Temperature/ORP Meter

Control/Logging

pH/Temperature Sensor

Measurement Range 0 to 14 pH, -10 to 105 °C

Field selectable to log pH/temperature or ORP independent of sample operation or to control
sample collection in response to volume exceeding low/high setpoints.

Temperature compensated; impact resistant ABS plastic body
Combination electrode with porous Teflon junction

Operating Temperature -18 to 80 °C (0 to 176 °F)

Dimensions 1.9 cm dia. × 15.2 cm long (0.75 in. × 6 in.) with 1.9 cm (0.75 in.) mpt cable end

Dissolved Oxygen Meter

Control/Logging

Measurement Method Galvanic

Sensor Temperature compensated; impact resistant polypropylene body

Measurement Range 0 to 20 mg/L

Resolution 0.01 mg/L

Accuracy ±3% of reading or 0.1 mg/L

Operating Temperature 0 to 50 °C (32 to 122 °F)

Dimensions 1.7 mm diameter × 15.7 cm long (0.65 in. × 6.25 in.) with 1.9 cm (0.75 in.)

Conductivity Meter

Control/Logging

Sensor Temperature compensated; impact resistant polypropylene body

Measurement Range 0 to 20 mS/cm

Field selectable to log dissolved oxygen independent of sampler operation or to control
sample collection in response to volume exceeding low/high setpoints.

Field selectable to log conductivity independent of sampler connection or to control sample
collection in response to volume exceeding low/high setpoints.

Resolution 0.01 mS/cm or 1 mS/cm

Accuracy ±2% of reading or 0.01 mS

Operating Temperature 0 to 50 °C (32 to 122 °F)

Dimensions 1.7 cm diameter × 15.2 cm long (0.67 in. x 6 in.) with 1.9 cm (0.75 in.) mpt cable end

Page 11

8990spc.fm Specifications

Specifications

Rain Gauge Input

For use with the Tipping Bucket Rain Gauge.

General Information

Analog Input Channels

General Information

4–20 mA Output

General Information

Maximum Resistive
Load

Output Voltage 24 V dc–no load

The Sampler Program can be initiated upon field selectable rate of rain.
Sampler records rainfall data.
Each tip = 0.25 mm (0.01in.) of rain.

Up to 3 additional data logging channels record data from external source(s)
Field assignable units

-4.0 to +4.0 V dc and 0 to 20 mA

Up to 2 output signals available.
User assignable

600 ohms

Insulation Voltage

Alarm Relays

General Information

Downlook Ultrasonic Sensor 40 kHz

Accuracy 0.003 m (±0.01 ft)

Maximum Range 3.35 m (11 ft) with a 3.05 m (10 ft) span

Deadband 38 cm (15 in.) maximum, self-minimizing

Material PVC housing with Buna-N acoustic window

Cable 4 conductor with integral stainless steel support cable

Submerged Pressure Transducer

Material Epoxy body with stainless steel diaphragm.

Cable Polyurethane sensor cable with air vent.

Cable Length 7.6 m (25 ft) standard; 76 m (250 ft) maximum

Between flow meter and 4–20 mA output—2500 V ac
Between the two 4–20 mA outputs—1500 V ac

(4) 10 amp/120 V ac or 5 amp/220 V ac form C relays
±0.1% FS Error
User assignable for any internal or external data channel or event.

Sensor Dimensions 2 cm H x 3.8 cm W x 12.7 cm L (0.8 in. x 1.5 in. x 5 in.)

Maximum Range

Maximum Allowable
Level

Operating Temperature
Range

Compensated
Temperature Range

Air Intake Atmospheric pressure reference is desiccant protected.

Page 12
Specifications

5 psi, 0.063 to 3.5 mm (0.018 to 11.5 ft)
15 psi, 0.063 m to 10.5 m (0.018 to 34.6 ft)

3x over pressure

0 to 71 °C (32 to 160 °F)

0 to 30 °C (32 to 86 °F)

8990spc.fm

Submerged Area/Velocity Probe

Method Doppler Principle/Pressure Transducer.

Material Polymer body, 316 series stainless steel diaphragm.

Cable 8-conductor urethane sensor cable with air vent.

Cable Length 7.6 m (25 ft) standard

Length: 12.7 cm (5 in.)

Sensor Dimension

Velocity

Depth

Width: 3.8 cm (1.5 in.)
Height: 2 cm (0.8 in.)

Velocity accuracy: 2% of reading; Zero Stability: <0.015 mps (<0.05 fps).
Response time: 4.8 seconds.
Profile Time: 4.8 seconds.
Range: -1.52 to 6.1 mps (-5 to +20 fps).
Resolution: 0.3 cm (0.01 fps).

Depth Accuracy: 0–3.35 m (0–11 ft) 1.37 mm (±0.054 in.)
0–10.06 m (0–33 ft) 4.09 mm (±0.161 in.)

Maximum Allowable Level: 3x over pressure.

Operating Temperature Range: 0 to 71 °C (32 to 160 °F).

Compensated Temperature Range: 0 to 30 °C (32 to 86 °F).

Temperature Error:

0.005 to 3.5 m ±0.0022 m/°C (0.018 to 11.5 ft ±0.004 ft/°F)

0.005 to 10.5 m ±0.006 m/°C (0.018 to 34.6 ft ±0.012 ft/°F)
(maximum error w/in compensated temperature range - per degree of change)

Velocity Induced Error on Depth (patent pending):
0 to 3.05 mps (0 to 10 fps) = 0.085% of reading.

Air Intake: Atmospheric pressure reference is desiccant protected.

Specifications

Page 13

8990spc.fm Specifications

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Section 1 Introduction

1.1 Controller Cover

The controller is mounted on top of a specially designed refrigerator. The
sample line passes through the top of the refrigerator and into the refrigerated
compartment where the sample containter(s) are located. The compartment
is surrounded by rigid foam insulation and utilizes a 120 CFM condenser fan.
An optional controller cover locks and protects the controller from damage
and unauthorized users.

Sample temperature is controlled by an adjustable air sensing thermostat
maintaining samples at 4 °C (39 °F) in ambients up to 50 °C (120 °F). The unit
has a magnetic door seal and does not require rear ventilation. The
refrigerator interior is food grade plastic and the exterior is coated galvanized
steel (304 stainless steel is optional). As a further barrier against corrosion,
the refrigeration components and copper plumbing are treated with phenolic
resin coating.

1.2 Front Panel

The front panel (Figure 1) of the sampler consists of the keypad, liquid crystal
display, and the internal case humidity indicator.

Figure 1 Front Panel

8

7

1

2

3

6

5

4

1. Soft Keys 5. Power OFF Key

2. Manual Mode Key 6. Main Menu Key

3. Run/Stop Key 7. Status Bar

4. Power ON Key 8. Menu Bar

Page 15

8990int.fm Introduction

Section 1

1.2.1 Keypad Description

The keypad includes the numeric keypad, soft keys, and function keys.

Numeric Keypad

The numeric keypad consists digits 0 through 9, a +/- key, and a decimal key.

“Soft” Keys

Soft keys are blank, white keys located to the left and right of the display. If no
function is shown for a specific key, that key is not currently active. The soft
key labels appear on the display and indicates (with a straight line) the proper
soft key to push for that action.

In some cases during a programming step an item from a list needs to be
selected. The soft keys on the right side of the display will change to display

UP and DOWN arrows. Scroll through the list of choices.

Power ON/OFF Key

To turn the instrument on, press the
on, a green light located next to the
sampler power is turned on. To turn the instrument off, press the

ON key. When the instrument is turned

ON key flashes to indicate that the

OFF key.

Function Keys

Three white function keys (Tab l e 1 ) are located just above the numeric keypad
re used often while operating the sampler. These functions are dedicated
keys to allow quick access.

Table 1Function Key Descriptions

Function Key Description

Main Menu

This is the starting point to get to any other point in the program. Press the Main Menu key at any time
during programming to return to the Main Menu Screen. The current action is cancelled if changes are not
yet accepted.

Manual Mode

Manually controls the operation of the sample pump and the distributor arm.

ADVANCED DISTRIBUTOR soft key: Moves the distributor arm to the user selected bottle. Used to verify the

operation of the distributor or when repositioning the arm if it was moved by hand.

GRAB SAMPLE soft key: Takes a sample in the same manner as when a program is running. Includes all

pre-rinses and sample retries, if programmed.

PUMP OPERATION soft key: Allows manual control of the pump in both forward and reverse directions. Once

started, the pump is stopped by pressing any key.

Run/Stop

Runs (or resumes) a program and stops a currently running program.

1.2.2 Liquid Crystal Display

The liquid crystal display (LCD) works in conjunction with the four soft keys.
When a soft key changes function, the display shows the new function.

Page 16
Front Panel

Menu Bar

The Menu Bar appears in a black band on the top edge of the display.
The upper left corner of the menu bar shows the time and date. The upper
right corner shows the name of the current menu (Figure 1).

8990int.fm

Status Bar

The Status Bar appears along the bottom edge of the display.
The appearance of the status bar changes depending upon the
function performed (Figure 1). The lower left corner of the Status Bar
indicates whether a program is Complete, Running, Halted, or Ready To Start.
If it is not needed during a programming step, it disappears.

The lower right corner displays system alarm conditions, such as low memory
battery, jammed distributor etc. For a list of possible alarms refer to

section 6.4 on page 89. The status bar also lists the valid choices when

entering certain programming information.

1.2.3 Internal Humidity Indicator

The round window of the internal case humidity indicator (Cat. No. 2660)
turns pink when the internal case humidity exceeds 60 percent.

The sampler is equipped with an internal desiccant module (Cat. No. 8849) to
absorb any humidity that may have been trapped in the case during final
assembly. Under normal operating conditions, this desiccant provides long­term protection against condensed moisture inside the case.

Replacement of the internal desiccant module is only necessary if the
indicator turns pink. (Refer to section 7.10 on page 103 for details on
replacing the internal desiccant.)

Section 1

Figure 2 Humidity Indicator

Internal Humidity

Replace

Desiccant

When

Pink

Page 17

8990int.fm Front Panel

Section 1

1.3 Interface Connectors

1

2

3

Interface connectors are located on the left side of the controller housing. An
optional weather tight terminal box located on the back of the sampler
provides conduit termination for all input/output lines.

1. 12 V dc 2. RS232 3. Auxiliary

The sampler comes standard with two interface receptacles.

• 12 V dc (Power Input)

• Auxiliary (Multi-purpose input/output port)

• RS232 (Serial communications port)

• Thermal (Control port for heating and cooling system)

In addition, the sampler can be used with a wide variety of optional devices:

• Level and Flow Monitoring
(Sensors)

• pH/ORP • 4–20 mA Current Loop Output

• Conductivity • Modem

• Dissolved Oxygen • Rain Gauge

• Temperature

Three additional analog inputs of
4–20 mA or -4.0 V dc to +4.0 V dc

1.3.1 Receptacle Caps

Page 18
Interface Connectors

Interface receptacles are covered with push-on receptacle caps. These caps
protect the connector pins from dirt and moisture and should be attached to
any receptacle not in use.

8990int.fm

1.4 Principle of Operation

1.4.1 Liquid Sensing

The sampler is designed for indoor, permanent installation. All controls are
located on the front panel. Capped, watertight connectors for interfacing to
external devices are located along the left side of the controller.

The sampler uses a liquid sensing system to detect the absence or presence
of liquid at the peristaltic pump intake. The liquid sensor (Figure 3) is located
on the front of the control housing.

The liquid sensing system provides three primary benefits:

• Accurate, repeatable sample volumes

• Intake tube prerinse

• Sample retry

Figure 3 Liquid Sensor

Section 1

1

2

3

1. Sensor Body 2. Sensor Cover 3. Knobs (turn to remove)

Accurate, Repeatable Sample Volumes

The liquid sensor detects the presence and velocity of the incoming sample.
This information allows the sampler to automatically dispense the correct
amount of liquid into the sample bottle.

The liquid sensing system allows the sampler to deliver repeatable sample
volumes even with changing suction lifts. Each time the peristaltic pump pulls
a sample, the microprocessor determines the time required for liquid to travel
to the liquid sensor. If the suction lift increases due to a drop in level at the
sample source, the time required for liquid to reach the sensor will increase.
The microprocessor automatically compensates for this change by allowing
the peristaltic pump to deliver sample liquid for a corresponding longer period
of time. Conversely, if suction lift decreases due to an increase in level at the
sample source, the time required for liquid to the sensor will decrease. Again,
the microprocessor automatically compensates for this change by decreasing
the sample delivery time.

Page 19

8990int.fm Principle of Operation

Section 1

Intake Tube Pre-Rinse

The liquid sensor also rinses the intake tubing with the liquid from the sample
source before taking each sample.

Upon sample initiation, the pump purges the intake line. The pump then
reverses, pulling liquid through the tubing, until it reaches the liquid sensor.
When the sensor detects liquid, the pump purges back to the source, and
then draws a sample. After the desired sample is collected, the pump purges
the intake line and awaits the next sample cycle. The sampler can be
programmed for up to 3 rinses before each sample.

Sample Retry

The liquid sensing system permits the sampler to repeat a collection cycle if a
sample is not obtained during the regular cycle.

The intake line length is user-programmed into the sampler memory. For a
line length of 3 to 99 feet, the sampler has a built-in “look up” table that
detects the maximum time required for liquid to reach the sensor. If liquid
does not reach the sensor within the defined time period, the pump will
automatically purge the intake line and initiate another sample cycle. The
sampler may be programmed for up to three repeated attempts. If a sample is
not obtained, the sampler retains in memory the time, date and reason for the
missed sample.

Page 20
Principle of Operation

8990int.fm

INSTALLATION

DANGER

Some of the following manual sections contain information in the form of warnings, cautions and notes
that require special attention. Read and follow these instructions carefully to avoid personal injury and
damage to the instrument. Only personnel qualified to do so, should conduct the installation/maintenance
tasks described in this portion of the manual.

DANGER

Certains des chapitres suivants de ce mode d’emploi contiennent des informations sous la forme
d’avertissements, messages de prudence et notes qui demandent une attention particulière. Lire et suivre
ces instructions attentivement pour éviter les risques de blessures des personnes et de détérioration de
l’appareil. Les tâches d’installation et d’entretien décrites dans cette partie du mode d’emploi doivent être
seulement effectuées par le personnel qualifié pour le faire.

PELIGRO

Algunos de los capítulos del manual que presentamos contienen información muy importante en forma de
alertas, notas y precauciones a tomar. Lea y siga cuidadosamente estas instrucciones a fin de evitar
accidentes personales y daños al instrumento. Las tareas de instalación y mantenimiento descritas en la
presente sección deberán ser efectuadas únicamente por personas debidamente cualificadas.

GEFAHR

Einige der folgenden Abschnitte dieses Handbuchs enthalten Informationen in Form von Warnungen,
Vorsichtsmaßnahmen oder Anmerkungen, die besonders beachtet werden müssen. Lesen und befolgen
Sie diese Instruktionen aufmerksam, um Verletzungen von Personen oder Schäden am Gerät zu
vermeiden. In diesem Abschnitt beschriebene Installations- und Wartungsaufgaben dürfen nur von
qualifiziertem Personal durchgeführt werden.

PERICOLO

Alcune parti di questo manuale contengono informazioni sotto forma d’avvertimenti, di precauzioni e di
osservazioni le quali richiedono una particolare attenzione. La preghiamo di leggere attentivamente e di
rispettare quelle istruzioni per evitare ogni ferita corporale e danneggiamento della macchina. Solo gli
operatori qualificati per l’uso di questa macchina sono autorizzati ad effettuare le operazioni di
manutenzione descritte in questa parte del manuale.

Page 21

8990i_stop.fm INSTALLATION

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Section 2 Installation

DANGER
This instrument should be
installed by qualified technical
personnel to ensure adherence to
all applicable electrical codes.

DANGER
Cet appareil doit être installé par du personnel technique qualifié, afin d'assurer
le respect de toutes les normes applicables d'électricité.

2.1 Unpacking the Instrument

Remove the sampler from the shipping carton and inspect it for any damage.
Contact Hach Customer Service at 1-800-227-4224 if any items are missing
or damaged.

2.2 Selecting the Installation Site

DANGER
This product is not designed for
hazardous locations where
combustible environments may
exist.

DANGER
Ce produit n'est pas conçu pour des endroits dangereux dans lesquels il peut
exister des environnements combustibles.

See Figure 4 and follow the simple guidelines below to allow complete
drainage of the intake line and prevent cross-contamination between samples.

• Install the sampler as close to the sample source as site conditions
permit. This will increase pump tube life and optimize overall sampler
performance.

• Install the sampler above the sample source, with the intake tubing
sloping downward to the sample.

• Make sure that the intake tubing is free of kinks or loops.

Figure 4 Setting Up the Instrument

3

1

2

FLOW

1. Slope tubing down to source (no
loops, kinks, or excessive tubing)

8990hrd.fm Installation

2. Place sampler on a level surface. 3. Locate strainer in an area of
turbulent and well mixed flow.

Page 23

Section 2

2.3 Installing the Pump Tube in the Sensor Body

1. Remove the four screws on the pump cover (Figure 5).

Note: Do not stretch the tubing in
the sensor body, as this could affect
the ability of the sensor to detect
liquid through the pump tubing.

2. Remove the front cover of the pump housing. Remove the tubing. Locate
the black dots on the tubing. The end of the tube that extends farthest
beyond the black dot attaches to the stainless steel tubing connector.

3. Install the pump tube in the pump housing so the black dots are visible
just outside the pump body.

Note: Use the proper length of
silicone tubing in the pump body. An
improper length can reduce the life
of the tubing and pump rollers. Refer
to Figure 5 for the correct length.

Figure 5 Pump Tube Loading

To Intake Tubing Connector

4. After inserting the new pump tube as shown, reinstall the front cover and
secure it with the four screws until finger tight.

5. Make sure that the tubing extends through the liquid sensor and out of the
controller as shown in Figure 6.

11 5/8 in.

(Tubing in Pump)

5 3/4 in. to Sample Fitting

Figure 6 Installing Pump Tube Through the Sensor Body

Page 24
Installing the Pump Tube in the Sensor Body

8990hrd.fm

2.3.1 Attaching the Intake Line

2.3.1.1 Attaching the Vinyl Tubing

The connection kit (Cat. No. 2248) contains two identical assemblies, one for
connecting vinyl tubing to the tubing attached to the sampler, and the other for
connecting the vinyl tubing to an intake strainer or remote pump. The kit
contains four hose clamps and two stainless-steel tubing connectors.

1. Push one end of the tubing connector into the vinyl tubing attached to the
controller until the tubing abuts the shoulder of the tubing connector.
Secure with a tubing clamp (Figure 7).

2. Push the other end of the tubing connector into the vinyl tubing until the
tubing abuts the shoulder of the tubing connector and secure with a
tubing clamp (Figure 7).

3. Repeat Step 1 and Step 2 for the fitting that connects the vinyl tubing to
an intake strainer or a remote pump.

Figure 7 3/8” Vinyl Tubing Connector

Section 2

1. Vinyl tubing to controller 3. Tubing clamp (2 required)

2. Vinyl tubing to strainer or pump. 4. Stainless-steel tubing connector

2.3.1.2 Attaching the Teflon®-Lined Tubing

The Connection Kit for Teflon-lined Tubing (Cat. No. 2186) contains two
identical assemblies, one for connecting the Teflon-lined tubing to the
stainless steel tubing connector and the other for connecting the Teflon-lined
tubing to the intake strainer. The kit contains six clamps, two lengths of
silicone tubing, and two stainless-steel barbed fittings.

To connect the Teflon-lined tubing follow the instructions and Figure 8 below:

1. Place the Teflon-lined tubing over the tubing connector nipple until it abuts
the shoulder of the tubing connector and secure with a tubing clamp.

2. Place one end of the silicone tubing over the wide end of the tubing
connector and secure with a tubing clamp.

3. Slide a second tubing clamp over the other end of the silicone tubing.
Push the silicone tubing over the stainless-steel fitting on the intake
strainer and tighten the tubing clamp.

Page 25

8990hrd.fm Installing the Pump Tube in the Sensor Body

Section 2

4. Repeat the procedure for the fitting that connects the Teflon-lined tubing

to the silicone pump tubing.

Figure 8

1. Intake strainer 4. Stainless-steel tubing connector

2. Tubing clamp (3 required) 5. Teflon-lined intake tubing

3. Two-inch piece of silicone tubing 6. Wide end of stainless steel tubing connector

3

/8″ ID Teflon-lined Tubing Attached to Intake Strainer and Tubing Connector

2.3.2 Setting Up the Intake Line and Strainer

Note: If site conditions do not permit
the intake to slope downward from
the sampler to the sample source,
disable the liquid sensors by
calibrating the sample volume using
the Timed Calibrate method when
programming the sampler.

For each sampling location, the intake line should be as short as practical,
and be free of any sharp bends, coils, or loops. Install the intake line with a
downward slope from the sampler to the sample source because:

• This will ensure the complete drainage of the intake line when it is
air-purged before and after each sample, and will help to prevent
cross-contamination of the individual samples.

• Complete drainage is important in freezing conditions, as any liquid slugs
that remain could freeze and plug the line and possibly damage the
sampler.

Note: Vertical lift should not exceed
27 ft. If the site requires more lift,
you may purchase the Remote
Pump Option. The remote pump
option is factory installed. Any
remote pump installed outside the
factory will void the warranty.

Place the sample intake and strainer in the mainstream of the sampling
source, in an area of turbulent and well mixed flow.

Also, you must account for the vertical location of the intake. A position too
near the surface may yield excess lighter materials, while a position too near
the bottom may yield excess heavy materials. The constituents of interest
must be considered when positioning the intake strainer.

2.4 Choosing Bottle and Retainer Configurations

A broad range of bottle configurations are available for the Sigma 900 MAX
Refrigerated Sampler.

Page 26
Choosing Bottle and Retainer Configurations

8990hrd.fm

Figure 9 Bottle Configurations

Section 2

2.5 Setting Up the Bottles

2.5.1 One-Bottle Sampling

For single bottle composite sampling, install the Full Bottle Shut-off (refer to
Section 2.7 on page 31) and place the bottle in the center of the refrigerator
(Figure 15 on page 31). The Full Bottle Shut-off positions the sample tubing
over the bottle mouth.

2.5.2 Two- and Four-bottle Sampling

For two-bottle sampling, install the distributor (refer to Section 2.6.1 on

page 30) and place the bottles in the Bottle #1 and Bottle #2 positions in the

tray as shown in Figure 10.

Page 27

8990hrd.fm Setting Up the Bottles

Section 2

For four-bottle sampling, install the distributor and place all four bottles in the
tray as shown in Figure 11.

Figure 10 Two-bottle Locations

2

2

1

3

1

Front

1. Single Bottle Location 2. Two Bottle Location 3. Slots for Wire From Bottle Tray (8 or 24 bottle)

Figure 11 Four-bottle Locations

1

2

1

1. 1, 2, or 4 Bottle Locations 2. Slot for Wire From Bottle Tray (8 or 24 bottles)

2.5.3 Eight-, 12-, or 24-bottle Sampling

For eight-, 12- or 24-bottle sets, install the distributor (refer to section 2.6.1 on

page 30). Place the bottles in the tray and install the proper bottle retainer

(Figure 12).

Bottle #1 is the first bottle clockwise (looking down on the tray) from the right
side of the tray. Bottle #1 is located on the inside of each bottle tray for all
multiple bottle sets (Figure 12).

Front

3

4

2

Page 28
Setting Up the Bottles

8990hrd.fm

Figure 12 Eight-, 12-, or 24-bottle Configuration

1

2

3

1. Distributor 2. Retainer 3. Bottles and Bottle Tray

Section 2

2.6 Installing the Distributor (Multiple Bottle Operation)

Note: Make sure the sampler is
powered off before removing or
installing the distributor.

For multiple bottle sampling, a motorized arm (Distributor) is provided to
automatically position the sample tube over the proper bottle. The
microprocessor-controlled distributor arm can automatically locate two, four,
eight, 12, or 24 discrete bottles.

To install the distributor:

1. Locate the two slots along one edge of the distributor assembly base
plate (Figure 14). Slide the distributor assembly, slots first, under the
shoulder screws located on the top inside surface of the controller
section.

2. When fully seated, hand tighten the knurled thumbscrew to hold the
distributor in place.

3. To ensure the arm has sufficient freedom of movement, hand-rotate the
arm to the opposite end of the Arm Stop.

4. Install the silicone distributor tubing to the sample fitting on the top
underside surface of the controller housing.

Note: Use care not to force the arm past the Arm Stop clip. The Arm Stop keeps the

arm from being rotated more than 360 degrees and keeps the distributor tubing
from kinking.

The distributor tubing should be installed so that the end of the tubing extends
out of the nozzle end of the distributor arm no more than
not let the tubing extend more than

8990hrd.fm Installing the Distributor (Multiple Bottle Operation)

1

/8 in. past the nozzle end of the arm.

1

/8 in. (Figure 13). Do

Page 29

Section 2

2.6.1 Distributor Arm Alignment

1. Program the sampler for 24-bottle operation.

2. Press

Bottle #1 position.

3. Place the arm on the distributor shaft and align the rib on the inside wall of
the control housing skirt.

4. Secure the arm to the shaft by tightening the
located on the distributor arm.

Figure 13 Distributor Tubing in Arm

START PROGRAM to set the distributor shaft to the

1

/8 in. hex-head screw,

1

2

1. Distributor Shaft 2. Nozzle End (1/8 in. max)

Figure 14 Distributor Installation

2

3

1

1. Refrigerator 2. Distributor Assembly 3. Distributor Arm

Page 30
Installing the Distributor (Multiple Bottle Operation)

8990hrd.fm

Section 2

2.7 Installing the Full-Bottle Shut-Off Device (Single Bottle Operation)

1. Install the rubber grommet into the hole provided in the cap of the

composite bottle.

2. Slide the Full Bottle Shut-Off, float first, into the bottle through the center
of the grommet.

3. Insert the Full Bottle Shut-Off connector into the receptacle (Figure 15)
and securely tighten.

Figure 15 Full Bottle Shut-off Installation

2

1

1. Full Bottle Shut-off 2. Refrigerator

2.8 Power Connections

Note: Install the sampler on its own
circuit to ensure a continuous,
stable source of power.

Use the ac power cords to apply ac power to the controller and
the refrigerator.

The sampler controller operates on a 12 V dc which is supplied by a built-in
ac/dc power converter. The power supply is permanently sealed in the
compartment located behind the transition plate. An ac line fuse is located on
the left side of the controller.

An optional power backup assembly is located on top of the ac power supply.
The ac power backup is designed to power the pump and controller only. Pull
the rubber hold-downs up and over the clips at each end of the ac Power
Backup to hold it in place.

The short, 2-pin cable on the power supply (or battery) connects to the
controller receptacle labeled 12 V dc.

Page 31

8990hrd.fm Installing the Full-Bottle Shut-Off Device (Single Bottle Operation)

Section 2

Important: Whenever electricity is present, there is a possibility of electrical

shock. Before connecting the sampler to an ac power source, the following
safety precautions should be taken:

• Check the power source to make sure that it satisfies the ac power
requirements of the sampler.

• Make sure that all electrical installations and connections are in
accordance with national and local electrical codes.

• Before performing any maintenance, disconnect the sampler from the
power source.

• Do not attempt to make any connection or otherwise handle the electrical
components of the sampler when connected to ac line power if the
immediate area is wet, or if hands or clothing are wet.

• If the circuit breaker or fuse in the ac power source is tripped, determine
the cause before restoring power to the sampler.

• Make sure the power circuit is grounded and protected with a Ground
Fault Interrupter (GFI).

2.9 Auxiliary Receptacle Pin Identification

Pin A/White (12 V dc) Powers an external device or flow meter. Must be used in conjunction with Pin B (ground).

Pin B/Blue (Ground) Connected to dc ground and is isolated from the earth ground found in the ac power line.

With the sampler in Flow Proportional mode and connected to an external flow meter, a 5 to
12 V dc input pulse lasting at least 25 milliseconds will cause the sampler to decrement one

Pin C/Yellow (Pulse Input)

Pin D/Black

(Liquid Level Actuator/

Auxiliary Control Input)

count. The 12 V dc line found on Pin A can be used directly with a simple contact closure to
Pin C or an external 5 to 12 V dc pulse may be applied providing the ground side of the
external signal is connected to the sampler ground at Pin B. This count is actuated at the
beginning of the input signal (the leading edge of the pulse).

This line is held at 5 V dc inside the sampler. When shorted to ground (Pin B), a signal is sent
to the microprocessor inside the sampler causing it to “wake up” and begin or resume its
sampling program. It can be used in conjunction with a simple level float to actuate the
sampler when liquid is present or to take over after a second sampler has finished its
program. It may also be used with any device (such as a pH meter) that produces a dry
contact output to control the sampler in response to some user-defined condition (i.e. high or
low pH); must be used in conjunction with Pin B.

Pin E/Red (Special Output) Normally at 0 V dc, this line goes to 12 V dc upon any of the selected events described in.

Normally an open circuit, this line switches to ground for 90 seconds at the conclusion of the

Pin F/Green

(Program Complete Output)

Page 32
Auxiliary Receptacle Pin Identification

sampling program. Used to “wake up” another sampler to take over sampling or to signal an
operator or data logger upon the completion of the sampling program. This pin is also used to
signal the bottle full condition in a single bottle/continuous mode, and will transmit the bottle #
to an 950 Flow Meter if the program complete signal is disabled.

8990hrd.fm

2.9.1 Splitter Interface

Figure 16 Splitter Interface

Section 2

Use the Splitter Interface (Cat. No. 939) when more than one signal is needed
simultaneously. Connecting the interface to the 6-pin connector on the
sampler provides three additional connectors. Two or more interfaces may be
connected in series to allow for additional connections.

Page 33

8990hrd.fm Auxiliary Receptacle Pin Identification

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OPERATION

DANGER

Handling chemical samples, standards, and reagents can be dangerous. Review the necessary Material
Safety Data Sheets and become familiar with all safety procedures before handling any chemicals.

DANGER

La manipulation des échantillons chimiques, étalons et réactifs peut être dangereuse. Lire les Fiches de
Données de Sécurité des Produits (FDSP) et se familiariser avec toutes les procédures de sécurité avant
de manipuler tous les produits chimiques.

PELIGRO

La manipulación de muestras químicas, estándares y reactivos puede ser peligrosa. Revise las fichas
de seguridad de materiales y familiarícese con los procedimientos de seguridad antes de manipular
productos químicos.

GEFAHR

Das Arbeiten mit chemischen Proben, Standards und Reagenzien ist mit Gefahren verbunden. Es wird dem
Benutzer dieser Produkte empfohlen, sich vor der Arbeit mit sicheren Verfahrensweisen und dem richtigen
Gebrauch der Chemikalien vertraut zu machen und alle entsprechenden Materialsicherheitsdatenblätter
aufmerksam zu lesen.

PERICOLO

La manipolazione di campioni, standard e reattivi chimici può essere pericolosa. La preghiamo di prendere
conoscenza delle Schede Techniche necessarie legate alla Sicurezza dei Materiali e di abituarsi con tutte
le procedure di sicurezza prima di manipolare ogni prodotto chimico.

Page 35

8990o_stop.fm OPERATION

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Section 3 Basic Programming Setup

3.1 Initial Power-Up of Sampler

After pressing the ON key, the sampler performs a complete diagnostic test
and displays the menu shown when the unit was last turned off. Set the
instrument programming features when the Main Menu is displayed. The Main
Menu is the starting point for all programming operations. The Main Menu
offers four choices:

• Setup—Basic and Advanced Sampling programming

• Status—Lists all current sampling status, power supply voltage, and

values of any data channels that are enabled.

• Display Data—Shows graphs and tables of logged data
(Displaying Data on page 113)

• Options—Optional Device Programming

Setup and Option functions lead to sub-menus and will configure the basic
and advanced features of the sampler. Refer to the Quick Start Guides on

page 105. The Display Data and Status Menus lead to sub-menus and will

provide information only. Press
enabled logging (flow, pH, temp., etc.)

STATUS to display any data channels that have

11:00 AM 21 - APR - 01 * MAIN MENU*

READY TO START

3.2 Basic Programming Setup

Basic programming setup must be performed, step-by-step and in its entirety,
after the instrument is installed. Refer to the Quick Start Guides on page 105
for more information. The basic program setup will modify the following items:

• Bottles • Intake Tubing

• Program Lock • Program Delay

• Sample Collection • Sample Distribution

• Liquid Sensor • Sample Volume

• Intake Rinses • Sample Retries

• Site ID

DISPLAY DATA SETUP

OPTIONS STATUS

In addition, several advanced sampling features are found on a sub-menu
called Advanced Sampling. Refer to section 3.3 on page 49 for Advanced
Sampling Basic Programming Setup.

Page 37

8990startup.fm Basic Programming Setup

Section 3

To make changes to the program entries after the basic programming setup,
press

MAIN MENU and select SETUP>MODIFY SELECTED ITEMS and highlight

the program entry using the

UP and DOWN keys.

To review all information in the Setup and Option menus without worrying
about accidentally changing the information, use the Review All Items function
to verify that the program is properly set up. For more information on this
function refer to Review All Items on page 113.

1. Press

11:00 AM 21 - APR - 01 * MAIN MENU*

READY TO START

2. From the Main Menu select

11:00 AM 21 - APR - 01 * MAIN MENU*

READY TO START

3. Press

SETUP from the Main Menu to prepare the instrument for use.

DISPLAY DATA SETUP

OPTIONS STATUS

SETUP>MODIFY ALL ITEMS.

MODIFY

ALL ITEMS

REVIEW ALL
ITEMS

ACCEPT to begin setting up the bottles.

SELECTED ITEMS

MODIFY

Step 1 - Bottles

1-A. Enter the total number of sample bottles in the refrigeration

compartment, using the numeric keypad.

11:00 AM 21 - APR - 01 BOTTLES

ACCEPT NUMBER OF BOTTLES:

—

BACKUP

ENTER: 1, 2, 4, 8, 12, OR 24

Note: The bottles may be installed directly in the refrigeration compartment or in the

removable bottle tray when using sets greater than four bottles.

CLEAR

ENTRY

1-B. Press ACCEPT to continue and move to the Bottle Volume menu.

Page 38
Basic Programming Setup

8990startup.fm

Section 3

1-C. Enter the bottle volume using the numeric keypad and select gallons or

milliliters using the

11:00 AM 21 - APR - 01 BOTTLES

CHANGE UNITS key.

Step 2 - Intake Tubing

ACCEPT

BACKUP

1-D. Press

11:00 AM 21 - APR - 01 INTAKE TUBING

ACCEPT and continue to Intake Tubing.

ACCEPT

BACKUP

BOTTLE VOLUME

— —

ENTER: 0.500—99.90

INTAKE TUBE LENGTH:

_____

ENTER: 3—99

CHANGE

UNITS

CLEAR

ENTRY

CHANGE

UNITS

CLEAR

ENTRY

2-A. Enter the intake tube length attached to the sampler, using the numeric

keypad. Length values from 100 to 3000 cm (3 to 99 ft) are valid.
Change the measurement unit using the

Note: Intake tube length affects sample volume accuracy, cut the tubing to the nearest

whole foot. Avoid excessively long tubing runs. Doubling the intake tubing length
can quadruple the pump tubing wear if intake rinses or sample retries are
enabled. Always locate the sampler close to the sample liquid source to minimize
tubing, pump, motor, and gearbox maintenance.

CHANGE UNITS key.

Step 3 - Program Lock

Note: The program lock password is
configured at the factory as “9000”
and cannot be changed.

2-B. Press ACCEPT to move to the Intake Tube Type menu.

2-C. Select the type of intake tube (

using the

2-D. Press

CHANGE UNITS key.

ACCEPT to select the intake tube type and continue with Program

3

/8 in. Vinyl, ¼ in. Vinyl, 3/8 in. Teflon®)

Lock.

Enabling the Program Lock will provide a protective “password” which will
keep unauthorized personnel from tampering with the instrument keypad.

3-A. Enable or Disable Program Lock using the

Note: When program lock is enabled and a user attempts to make a change in the

program, a screen will ask the operator to enter the password. The operator must
enter 9000 and press ACCEPT.

CHANGE CHOICE key.

3-B. Press ACCEPT to continue the basic program setup and continue with

Program Delay.

Page 39

8990startup.fm Basic Programming Setup

Section 3

Step 4 - Program Delay

Note: If both Setpoint Sampling and
Program Delay are enabled, the
program delay is evaluated first,
prior to any checking for
setpoint conditions.

4-A. Enable or Disable Program Delay using the CHANGE CHOICE key.

4-B. After enabling the program delay, enter the time and day of week that

11:00 AM 21 - APR - 01 PROGRAM DELAY

4-C. Press

Step 5 - Sample Collection

5-A. Select the type of sample collection; Time Proportional,

Enabling the Program Delay will cause the sampling program to delay
starting until a user specified time and day of week are programmed.

the program will begin. Use the soft keys to change the day of week as
well as the AM/PM indicator.

ACCEPT

CLEAR
ENTRY

ACCEPT to continue with Sample Collection.

START PROGRAM:

00:00 AM MON

(USE THE NUMERIC KEYPAD)

CHANGE

AM/PM

CLEAR

DAY

Flow- Proportional Constant Volume, Variable Time (CVVT), or
Flow-Proportional Constant Time, Variable Volume (CTVV).

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

Timed-Proportional Sampling Intervals

When the program starts, a sample is taken immediately or delayed until after
the first interval has elapsed. Select either, Take First Sample Immediately or
After the First Interval.

Timed-Proportional samples are taken each time a user defined time interval
has elapsed. Samples can be continually taken at that interval until the
completion of the program.

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

ACCEPT

BACKUP

CHOICES: TIMED, FLOW PROPORTIONAL

a. From the Sample Collection menu, press

SAMPLE COLLECTION

_______________

CHANGE CHOICE until

Timed Proportional is displayed. Press ACCEPT to continue.

ACCEPT

BACKUP

CHOICES: TIMED, FLOW PROPORTIONAL

SAMPLE COLLECTION

TIMED PROPORTIONAL

CHANGE

CHOICE

CHANGE

CHOICE

Page 40
Basic Programming Setup

8990startup.fm

Section 3

b. Enter the Interval Between Samples. Press ACCEPT to continue.

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

ACCEPT

INTERVAL:

CANCEL

ENTER: 000:01—999.00 (hrs:min)

c. Select either Take First Sample Immediately or After The

First Interval?

Note: When the program is started, the first sample is taken immediately upon

pressing the start button or after the first interval has elapsed.

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

00:00 (hrs:min) CLEAR

ENTRY

ACCEPT

CANCEL

CHOICES: IMMEDIATE, AFTER 1st SAMPLE

d. Press ACCEPT to continue to Sample Distribution.

Flow Proportional Constant Volume, Variable Time (CVVT)

CVVT sampling is a flow-proportional method of sampling. CVVT samples are
taken when a user-defined flow volume occurs in the flow stream. This occurs
when the sampler is programmed to take a sample every time a specified
volume of flow occurs in the flow stream. Specified flow volume intervals can
vary with the flow rate of the stream, therefore varied time intervals can occur
when constant (fixed) volume occurs.

Flow volume is determined internally, by the optional integral flow meter or by
an external flow meter.

a. Press

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

ACCEPT

CANCEL

CHANGE CHOICE until Flow Proportional is displayed. Press

ACCEPT.

SAMPLE COLLECTION:

FLOW-PROPORTIONAL

ENTER: 1.00 - 99999999

TAKE FIRST SAMPLE:

_______________

CHANGE

CHOICE

CHANGE

UNITS

b. In the Flow Proportional menu, press

Volume, Variable Time is displayed. Press

11:00 AM 21 - APR - 01 FLOW PACING

ACCEPT

FLOW PACING MODE:

CONST VOL / VAR TIME

CANCEL

CHOICES: VAR T / CST VOL, CST T / VAR VOL

8990startup.fm Basic Programming Setup

CHANGE CHOICE until Constant

ACCEPT.

CHANGE

CHOICE

Page 41

Section 3

c. Select either Integral or External flow meter and press ACCEPT.

d. Enter the flow volume between samples using the numeric keypad

and select a unit of measure using the

ACCEPT. Refer to Table 2 for flow unit choices.

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

ACCEPT

CANCEL

TAKE SAMPLE EVERY:

1500 gal

ENTER: 1.00—99999999

CHANGE UNITS key, then press

CHANGE

UNITS

CLEAR

ENTRY

Table 2 Sampler Pacing Flow Units

Abbreviation Volume

gal gallons

ltr liters

3

m

af acre-feet

cf cubic feet

cubic meters

e. Enable or Disable Timed Over-Ride using the

Press

ACCEPT to continue, then enter a time period using the

CHANGE CHOICE key.

numeric keypad.

Note: Select Timed Over-Ride if the flow rate drops to an unusually low value

during flow-proportional sampling and if the sample is collected once an hour
for example, even if the flow interval has not elapsed.

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

ACCEPT

CANCEL

TIMED OVER-RIDE:

00:00 (hrs:min)

CLEAR

ENTRY

ENTER: 000:01 — 999:00 (hrs:min)

f. Select Take First Sample Immediately or After First Interval?

Note: When the program is started, the first sample is taken immediately upon

pressing the start button or after the first interval has elapsed.

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

ACCEPT

TAKE FIRST SAMPLE:

_______________

CANCEL

CHOICES: IMMEDIATE, AFTER 1st SAMPLE

CHANGE

CHOICE

Page 42
Basic Programming Setup

g. Press ACCEPT to continue to Sample Distribution.

8990startup.fm

Flow Proportional Constant Time, Variable Volume Sampling (CTVV)

A Level-Velocity Sensor Input must be logged and electrically connected for
the CTVV feature to work correctly.

CTVV samples are taken at user-specified constant (fixed) intervals. However
the actual volume of each sampling is based on the known average flow rate
of the site, the actual metered flow rate for each specific interval, the total
sample volume desired, the user-specified collection period, and the specified
Sampling Interval. Depending on the flow volumes of a stream and various
intervals within the Collection Period, the volume of individual sampling can
vary. Also, the total sample collected during the entire period can carry slightly
above or below the Total Volume Desired. For these reasons, the
manufacturer advises to use a sampling container that has a larger volume
than the Total Volume Desired value.

• Sample Distribution menus are not available when CTVV is selected.

• A level-velocity sensor input must be logged and electrically connected for

the CTVV feature to correctly work.

• The Flow Pacing Mode menu within the Flow Proportional menus
sequence will not remember the previous setting whenever you re-enter
this menu, it will revert to the CVVT default. When re-entering this menu,
press

CHANGE CHOICE to select the sampling method, CVVT or CTVV.

Section 3

Example:

This is an example of how the instrument determines sample volume, based
on user inputs and actual metered flow volume.

The user entered values are the following:

• Average Flow Rate (historical, site specific): 150 gph

• Sampling Interval: 2 minutes

• Total Sample Volume Desired: 1500 mL

• Collection Sampling Period: 30 minutes

Calculation 1: Total Number of Samples

Sample Period

--------------------------------------------- -

Sampling Interval

30 min.

------------------- 15 samples total within specified period==
2 min.

Calculation 2: Average Sample Volume

Total Sample Volume Desired

------------------------------------------------------------------------------- -

Total Number of Samples

1500 mL

--------------------------------------------- 100 mL/sample==
15 samples Total

Calculation 3: Sample’s Volume per unit of Flow Rate

Avg. Sample Volume

------------------------------------------------------- -

Avg. Flow Rate

100 mL/Sample

----------------------------------------- - 0.7mL/gph==
150 gph

Calculation 4: Actual Sample Volume to be Collected

Sample Volumes per unit of Flow Rate Actual metered Flow Rate×

0.7 mL/gph 150 gph× 105 mL for this sample interval=

Page 43

8990startup.fm Basic Programming Setup

Section 3

a. In the Sample Collection menu, press CHANGE CHOICE until Flow

Proportional is displayed. Press

11:00 AM 21 - APR - 01 SAMPLE COLLECTION

ACCEPT

SAMPLE COLLECTION:

FLOW-PROPORTIONAL

CANCEL

ENTER: 1.00 - 99999999

ACCEPT.

CHANGE

UNITS

b. In the Flow Pacing menu, press

Const Time/Var Vol appears. Press

11:00 AM 21 - APR - 01 FLOW PACING

ACCEPT

FLOW PACING MODE:

CONST TIME/ VAR VOL

CANCEL

CHOICES: VAR T / CST VOL, CST T / VAR VOL

CHANGE CHOICE until

ACCEPT.

CHANGE

CHOICE

c. In the Average Flow Rate menu use the numeric keypad to enter the

known historical Average Flow Rate for a particular site.

11:00 AM 21 - APR - 01 CONST TIME/ VAR VOL

ACCEPT AVERAGE FLOW RATE:

150.00 gph

CANCEL

ENTER: 1.00—99999999

CLEAR

ENTRY

d. In the Interval menu use the numeric keypad to enter the time interval

between sample collections. Press

11:00 AM 21 - APR - 01 CONST TIME/ VAR VOL

ACCEPT.

Page 44
Basic Programming Setup

ACCEPT INTERVAL:

0:02 (hrs:min)

CANCEL

ENTER: 1.00—999:00 (hrs:min)

CLEAR

ENTRY

e. In the Total Volume Desired menu use the numeric keypad to enter

the total volume of the sample. Press

11:00 AM 21 - APR - 01 CONST TIME/ VAR VOL

ACCEPT TOTAL VOLUME DESIRED:

1500 Ml

CANCEL

ENTER: 10—9999

ACCEPT.

CLEAR

ENTRY

8990startup.fm

Section 3

f. In the Collection Period menu use the numeric keypad to enter the

time period for collecting samples.

11:00 AM 21 - APR - 01 CONST TIME/ VAR VOL

ACCEPT COLLECTION PERIOD

0:30 (hrs:min)

CANCEL

ENTER: 000:01—999:00 (hrs: min)

CLEAR

ENTRY

Step 6 - Sample Distribution

Sample distribution describes the way samples are deposited in a bottle(s).
Several bottle combinations are available with the sampler (Figure 10 on

page 24). Sample distribution is deposited into a single bottle or multiple

bottles. Multiple bottle applications use a distributor arm to automatically aim
the sample intake tubing into the proper bottle. Multiple bottle sets deliver
each sample to all bottles or deliver each sample into individual bottles or a
subset of bottles.

Single Bottle

6-A. Select either Stop After Last Bottle or Run Continuously Stop After Last

11:00 AM 21 - APR - 01 SAMPLE DISTRIBUTION

g. Press

ACCEPT to continue to Sample Distribution.

Bottle mode stops the program when the sample is deposited into the
last bottle. Run Continuously mode continues running until it is
manually stopped.

ACCEPT

CANCEL

CHOICES: CONTINUOUS, STOP AFTER LAST

RUN MODE:

RUN CONTINUOUSLY

CHANGE

CHOICE

6-B. Press

ACCEPT to continue to Liquid Sensor setup.

Multiple Bottle Sets

Multiple bottle applications use a distributor arm to automatically aim the
sample intake tubing into the proper bottle. Multiple bottle sets deliver each
sample to all bottles or deliver each sample into individual bottles or a subset
of bottles.

6-A. Select

11:00 AM 21 - APR - 01 SAMPLE DISTRIBUTION

8990startup.fm Basic Programming Setup

YES or NO for Deliver Each Sample to All Bottles.

ACCEPT

CANCEL NO

DELIVER EACH SAMPLE TO

ALL BOTTLES?

CHOICES: YES, NO

CHANGE

CHOICE

Page 45

Section 3

If NO is selected:

a. Select Samples per Bottle or Bottles per Sample.

Example 1: Samples Per Bottle

• Bottles— 8

• Sample Collection; Time-Proportional; Sampling Interval—30 min.

• Sample Distribution; Deliver Each Sample to All Bottles?— No

Samples Per Bottle— Yes
Number of Samples Per Bottle— 3

• Sample Volume—100 mL

Every 30 minutes a sample is initiated. A 100 mL sample is drawn into
bottle #1, 30 minutes later a second sample is drawn into bottle #1, 30
minutes later a third sample is drawn into bottles #1. Thirty minutes later
the distributor arm advances to bottle #2 and a 100 mL sample is drawn
into bottle #2. The sequence continues until all bottles are filled. Each
bottle receives three samples before the distributor moves to the next
bottle.

Note: A high pressure air purge is
automatically applied to the intake
tube between each sample
intake cycle.

Example 2: Bottles Per Sample

• Bottles— 4

• Sample Collection; Timed Proportional; Sampling Interval— 30 min.

• Sample Distribution; Deliver Each Sample to All Bottles?— No

Bottles Per Sample— Yes
Number of Bottles Per Sample— 2

• Sample Volume— 1000 mL

Every 30 minutes a sample cycle is initiated. A 1000 mL sample is drawn
into the first bottle. The distributor arm immediately advances to bottle #2
and a 1000 mL sample is drawn into the second bottle. Thirty minutes
later, the distributor arm advances to bottle #3, and a 1000 mL sample is
taken. The distributor arm immediately advances to bottle #4 and a 1000
mL sample is drawn into the fourth bottle. The pattern continues each
sample cycle with each set of two bottles receiving a sample each time.

b. Press

If

YES is selected:

ACCEPT to continue with Liquid Sensor setup.

Each time a sample is taken it is consecutively placed in all bottles. This
allows for split samples.

Page 46
Basic Programming Setup

a. Select Stop After Last Sample or Run Continuously.

11:00 AM 21 - APR - 01 SAMPLE DISTRIBUTION

ACCEPT

BACKUP

CHOICES: CONTINUOUS, STOP AFTER LAST

RUN MODE:

RUN CONTINUOUSLY

CHANGE

CHOICE

8990startup.fm

Section 3

b. If Stop After Last Sample is chosen, enter the samples to collect

using the numeric keypad. Press
Liquid Sensor.

11:00 AM 21 - APR - 01 SAMPLE DISTRIBUTION

ACCEPT

SAMPLES TO COLLECT:

BACKUP

ENTER: 1 — 999

Example 1: The following example creates four identical composite

samples automatically if the sampler is programmed as follows:

• Bottles— 4

• Sample Collection; Sampling Interval— 30 minutes

• Sample Collection; Samples to Collect— 25

• Sample Volume— 100 mL

ACCEPT to continue to

2CLEAR

ENTRY

Step 7 - Liquid Sensor

Note: Sample retries cannot be
enabled when the liquid sensor
is disabled.

Every 30 minutes a sample is initiated and a 100 mL sample is drawn into
the first bottle. The distributor arm advances to bottle #2 and 100 mL of
sample is drawn into the second. This also occurs in bottles #3 and #4.

Sampling will continue every 30 minutes until 25 samples are deposited.
Once all samples are deposited the program will terminate. If Run
Continuously is selected the sampling will restart automatically.

The liquid sensor contains a pair of ultrasonic transducers which sense the
presence of liquid inside silicone tubing.

7-A. Enable or Disable Liquid Sensor using the

CHANGE CHOICE key.

Enabling the Liquid Sensor

When the liquid sensor is enabled, the sampler will perform two duties:

• It senses when liquid reaches the pump during an intake cycle. The pump
then reverses to rinse the line, up to three times.

• It senses the absence of liquid during a sample intake cycle if the intake
tubing is plugged or if the water level has dropped below the level of the
intake tube strainer. This initiates a Sample Retry if programmed

Disabling the Liquid Sensor/Timed Calibration

Disabling the liquid sensor turns the liquid sensor off. The sample volume is
then metered using a timed method (Timed Calibration), instead of a
sensed method.

7-B. Press

8990startup.fm Basic Programming Setup

ACCEPT to continue to Sample Volume.

Page 47

Section 3

Step 8 - Sample Volume

Note: The minimum sample volume
is ten milliliters.

Step 9 - Intake Rinses

When multiple bottles are selected in Bottle Per Sample mode all bottles in a
subset receive a full sample volume. The volume is not divided among
the bottles.

8-A. Enter the desired volume of each sample using the numeric keypad.

Press

ACCEPT to continue to Intake Rinses.

11:00 AM 21 - APR - 01 SAMPLE VOLUME

ACCEPT

SAMPLES VOLUME:

BACKUP

ENTER: 10 — 9999

______ CLEAR

ENTRY

9-A. Enter number of rinses using the numeric keypad.Press ACCEPT to

continue to Sample Retries.

11:00 AM 21 - APR - 01 INTAKE RINSES

ACCEPT

INTAKE RINSES:

BACKUP

ENTER: 0 — 3

0CLEAR

ENTRY

Step 10 - Sample Retries

Note: Excessive intake tube line
lengths combined with multiple
Intake Rinses and Sample Retries
can increase the pump tube and
drive train wear. Locate the sampler
as close to the sample liquid source
as possible to minimize wear and
maintenance requirements.

Up to three intake rinses are enabled per sample cycle. After the sample
cycle’s initial purge has been completed, the sample liquid is drawn in until it
reaches the liquid sensor. The pump stops and purges the line before any
liquid enters the bottle. This is repeated up to three times before the actual
sample is taken and the line purged for the final time during that cycle.

Intake rinse can prevent cross contamination of samples. When the line is
purged at the end of each sample cycle, a few droplets of sample liquid may
cling to the inside walls of the tubing and the droplets are drawn in with the
following sample. Intake rinses will condition the intake line with a source
liquid that minimizes contamination from the previous sample.

10-A. Enter the number of Sample Retries using the numeric keypad. Press

ACCEPT to continue to Site ID.

Up to three sample retries are enabled per sample cycle. After the initial purge
is completed, the sample liquid is drawn until it reaches the liquid sensor. If
the sample liquid does not reach the sensor within a reasonable time
(determined using the tubing length), the sample attempt is aborted, a purge
is initiated and the first of up to three sample retries is attempted.

After three attempts and no sample liquid has been collected, the cycle is
aborted, a Missed Sample is reported to the Sample History Log, and the
sampler begins a new sample interval.

Page 48
Basic Programming Setup

8990startup.fm

Step 11 - Site ID

Section 3

11-A. Enter a site identification number of up to 8 digits. This Site ID will

appear on all data printouts. This feature is useful when multiple sites
are monitored using a single flow meter or if data readings from multiple
flow meters are collected.

11:00 AM 21 - APR - 01 SITE ID

ACCEPT

SITE ID:

BACKUP

(USE NUMERIC KEYPAD)

00000000 CLEAR

ENTRY

11-B. Press

ACCEPT.

11-C. After Site ID is accepted the following menu will appear:

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

DO YOU WISH TO
ACCESS THE ADVANCED
SAMPLING FEATURES?

ENTER: 1 — 999

11-D. If

Note: To return to the Advanced Sampling options at a later time, from the Main Menu

11:00 AM 21 - APR - 01 PROGRAM ENTRIES

NO, the basic setup program is complete.

select, SETUP>MODIFY SELECTED ITEMS>PROGRAM ENTRIES. Highlight
Advanced Sampling and press SELECT. In the Advanced Sampling menu highlight
an item using the

SELECT

UP and DOWN keys and press SELECT.

INTAKE RINSES
SAMPLE RETRIES
SITE ID

ADVANCED SAMPLING

YES

NO

RETURN

11-E. If YES, continue to Advanced Sampling, section 3.3.

3.3 Advanced Sampling

When enabled, the Advanced Sampling option will have an arrow pointing at it
on the Advanced Sampling menu display.

Advanced Sampling Choices Include:

• Program Complete Output • Timed Bottle Sets

• Setpoint Sampling • Upset Sample

• Special Output • Variable Intervals

• Start/Stop Times • Variable Volumes

• Storm Water

Page 49

8990startup.fm Advanced Sampling

Section 3

Step 12 - Program Complete Output

Program Complete Output sends a +12 V dc signal out Pin F of the Auxiliary
Receptacle at the completion of the sampling program. This signal is also sent
when a Full Bottle condition causes the program to complete. The Program
Complete signal remains on (+12 V dc) for 61 seconds and then turns
back off (0 V dc).

Program Complete Output is used for the following purposes:

• Multiple Sampler Operation. Samplers are arranged in a “Cascade”
control where the first sampler signals a second sampler to start its
program when the first sampler’s program is complete. This feature
requires the second sampler to be programmed for external
start operation.

• To interface to a PC to signal the end of the sampling program.

• To interface to a relay that trips a signal light in a control room to indicate

that sampling is finished and samples are ready to be picked up.

12-A. From the Advanced Sampling menu highlight Program Complete using

the

UP and DOWN keys. Press SELECT to continue.

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

12-B. Enable or Disable Program Complete using the

12-C. Press

Step 13 - Setpoint Sampling

Setpoint sampling allows the control of an automatic liquid sampler from one
of up to 14 sources. Setpoint sampling defines a set of limits that inhibit
sampling until an upset condition occurs, causing the limits to exceed.
Sampling is enabled only when the waste stream falls outside the setpoints.

13-A. Highlight Setpoint Sampling using the

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

SELECT

PGM CMPLT OUTPUT

SETPOINT SAMPLING

RETURN

SPECIAL OUTPUTS

ACCEPT to continue to Set Point Sampling.

Advanced Sampling Menu. Press

SELECT

RETURN

PGM CMPLT OUTPUT

SETPOINT SAMPLING

SPECIAL OUTPUTS
START/STOP TIMES

CHANGE CHOICE key.

UP and DOWN keys on the

SELECT.

Page 50
Advanced Sampling

13-B. Enable or Disable Setpoint Sampling using the

Press

ACCEPT to continue.

CHANGE CHOICE key.

8990startup.fm

Section 3

13-C. Select either Start on Setpoint or Stop on Setpoint by pressing

CHANGE CHOICE. Press ACCEPT to continue.

• Start on Setpoint will start a program when the setpoint condition is

met. The program continues to run even if the condition falls back
within the setpoint limits.

• Stop On Setpoint halts the program if the setpoint condition falls back

within the setpoint limits and starts again if the limits are exceeded.

13-D. Highlight the desired channel to trigger from, then press

13-E. Press either

11:00 AM 21 - APR - 01 SETPOINT SAMPLING

SETPOINT CONDITION:

Note: Flow Rate of Change and Rainfall are signals that only increase and never

decrease in value, therefore these signals do not require Low Condition.

HIGH CONDITION or LOW CONDITION.

SELECT.

HIGH

CONDITION

LOW

CONDITION

The external control signal must be configured on the external equipment for
the desired setpoint. An external control device must provide a dry contact
and can include a float switch, push-button, external flow meter, etc. For
interface connections refer to section 2.10 on page 29.

13-F. Enable or Disable the trigger point using the

CHANGE CHOICE key.

13-G. Select the desired high or low trigger point using the numeric keypad.

Press

ACCEPT. Refer to Tabl e 3.

11:00 AM 21 - APR - 01 SETPOINT SAMPLING

ACCEPT SETPOINT SAMPLING:

HIGH TRIGGER POINT:

CANCEL

(USE NUMERIC KEYPAD)

00000 in. CLEAR

ENTRY

13-H. Enter the Deadband value if required or, if programming Flow Rate Of

Change or Rainfall, enter a time interval that the flow or rainfall change
must take place (refer to section 6.4 on page 87).

11:00 AM 21 - APR - 01 SETPOINT SAMPLING

ACCEPT SETPOINT SAMPLING

DEADBAND:

CANCEL

(USE NUMERIC KEYPAD)

0.000 CLEAR
ENTRY

Page 51

8990startup.fm Advanced Sampling

Section 3

13-I. Enter a delay when input is active. This delay will keep the program

from starting until the end of the delay period. Using the numeric
keypad, enter the delay in minutes and/or hours. Press

11:00 AM 21 - APR - 01 SETPOINT SAMPLING

ACCEPT DELAY WHEN INPUT

BECOMES ACTIVE:

CANCEL

(USE NUMERIC KEYPAD)

Table 3 Sampling Triggers and Settings

Channel Sampling Trigger Settings

1 Level High and/or Low Condition, Deadband

2 Flow High and/or Low Condition, Deadband

3 Flow Rate of Change High Condition within Time Interval

4 pH or ORP High and/or Low Condition, Deadband

5 Process Temperature High and/or Low Condition, Deadband

6 Rainfall High Condition within Timed Interval

7 Analog Input Channel 1 High and/or Low Condition, Deadband

8 Analog Input Channel 2 High and/or Low Condition, Deadband

9 Analog Input Channel 3 High and/or Low Condition, Deadband

10 Analog Input Channel 4 or DO High and/or Low Condition, Deadband

11 Analog Input Channel 5 or DO Temperature High and/or Low Condition, Deadband

12 Analog Input Channel 6 or Conductivity High and/or Low Condition, Deadband

13 Analog Input Channel 7 or Conductivity Temperature High and/or Low Condition, Deadband

14 External Control Configured in External Equipment

(hrs:min) CLEAR

ACCEPT.

ENTRY

Step 14 - Special Output

Page 52
Advanced Sampling

The Special Output is a +12 V dc signal that appears on Pin E of the Auxiliary
Receptacle (refer to section 2.10 on page 29).

14-A. Highlight Special Output using the

Sampling Menu. Press

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

SELECT

RETURN

PGM CMPLT OUTPUT
SETPOINT SAMPLING

SPECIAL OUTPUTS

START/STOP TIMES
STORM WATER

SELECT to continue.

14-B. Enable or Disable Special Outputs using the

Press

SELECT to continue.

UP and DOWN keys on the Advanced

CHANGE CHOICE key.

14-C. If enabled, select After Each Sample, Only When Pumping, or From

Rinse to Purge.

8990startup.fm

Section 3

Bottle Number

If the Program Complete Output is disabled, then it is used in conjunction with
this Special Output to transmit the bottle number to the connected device.

The Special Output signal can be configured to activate during one of the
following conditions:

• After Each Sample—One second pulse at the completion of each sample
cycle. It signals an external datalogger or PC that a sample cycle was
initiated. When this choice is enabled, the sample success/failure is also
transmitted to the external datalogger by means of Pin F on the
Auxiliary connector.

• Only When Pumping—During sample intake portion of cycle only,
ignoring all purges and rinse cycles. Used for tipping solenoid or ball
valves when sampling from a pressurized line.

• From Rinse To Purge—During entire sample cycle, including all purge
and rinse cycles. Used for tripping solenoid or ball valves when sampling
from a pressurized line.

Step 15 - Start/Stop Times

Start/Stop Times start and stop a program at pre-arranged times. For
example, this feature can be used to run a program during weekdays and stop
the program during weekends, restarting on the following Monday. It can also
halt sampling for nighttime shutdowns.

Up to 12 Start and 12 Stop time entries can be set in any one program. Either
a Start Time and Date or a Start Time and Day of the Week may be selected.

15-A. Highlight the Start/Stop Time choices on the Advanced Sampling menu.

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

15-B. Enable or Disable Start/Stop Times using the

15-C. Press

Press

SELECT to continue.

PGM CMPLT OUTPUT

SELECT

RETURN

Press

SETPOINT SAMPLING
SPECIAL OUTPUT

START/STOP TIMES

STORM WATER
TIMED BOTTLE SETS

CHANGE CHOICE key.

ACCEPT to continue.

CHANGE CHOICE to select either Time/Date or Time/Weekday.

Select Time/Date if the start and stop times are longer than one week.
Select Time/Weekday if the program repeats on a daily or weekly basis.

15-D. Press

8990startup.fm Advanced Sampling

ACCEPT to continue.

Page 53

Section 3

15-E. Enter the Start Time #1, press ACCEPT to continue. Enter Stop Time #

and press

11:00 AM 21 - APR - 01 START/STOP TIMES

ACCEPT to continue.

Step 16 - Storm Water

ACCEPT

CLEAR
ENTRY

HIT CLEAR, THEN ACCEPT, AFTER LAST ENTRY

11:00 AM 21 - APR - 01 START/STOP TIMES

ACCEPT

CLEAR
ENTRY

HIT CLEAR, THEN ACCEPT, AFTER LAST ENTRY

PROGRAM START # 1

(TIME:DAY)

PROGRAM STOP # 1

(TIME:DATE)

CHANGE

AM/PM

CHANGE

DAY

CHANGE

AM/PM

CHANGE

DAY

15-F. Continue entering Start and Stop times until finished. To exit and save

entries, enter a blank time and date. Press
press

ACCEPT to continue to Storm Water.

CLEAR ENTRY and then

EPA regulations for storm water discharges require monitoring of
precipitation, flow, and water samples in order to assess the impact of storm
or snow melt runoff on receiving waters. The manufacturer can help you
create a storm water monitoring system that consists of a multiple bottle
sampler, an external flow meter, and a tipping bucket rain gauge.

In addition to performing basic sampling routines, 900 MAX Series Samplers
that are equipped with the storm water monitoring program have the following
additional capabilities:

• The storm water sampling routine allows collection of automatic grab
sample(s) at user-selectable timed intervals (up to 24 different intervals
may be selected) during the storm's early stage or “first flush.” First flush
grab and main program flow weighted composite samples are
automatically segregated. The first flush sample volume may be set
independently of the sample volume for the flow weighted composite.

• The special storm water program allows an external device to initiate the
start of the sampling program. A dry contact closure across Pins B and D
on the Auxiliary receptacle, held closed for at least 61 seconds, is
required.

• When sampling with multiple bottles, the sampler can be programmed to
collect one large “first flush” sample (or small multiple samples) at timed
interval(s). The number of bottles segregated for the first flush sample is
selectable. Concurrently, flow weighted samples are collected from the
beginning of the storm until all remaining bottle(s) are filled, or after a user
selected time has elapsed.

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Advanced Sampling

8990startup.fm

Section 3

• Storm water samplers are equipped with a special prerinse that occurs

only with the first sample collection. This “one time only” rinse ensures a
clean intake for installations that may remain dormant for extended
periods, and extends battery life by eliminating the prerinse for
subsequent samples.

16-A. Highlight Storm Water using the

Sampling Menu. Press

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

SETPOINT SAMPLING

SELECT

RETURN

SPECIAL PUTPUT
START/STOP TIMES

STORM WATER

TIMED BOTTLE SETS
UPSET SAMPLE

SELECT to continue.

16-B. Enable or Disable Storm Water using the

ACCEPT to continue.

16-C. Select a Start Condition using the

UP and DOWN keys on the Advanced

CHANGE CHOICE key. Press

CHANGE CHOICE key.

• Rain

• Level

• Rain or Level (either conditions must be met for the program to begin)

• Rain and Level (both conditions must be met for the program

to begin)

• Immediate (program starts as soon as the

RUN key is pressed, a start

condition is not required)

• External Trigger (program starts when signaled by an external device

at least 61 seconds through the Auxiliary connector. No start
condition is required).

16-D. Enter the Start Condition Limits. Rainfall times will depend on the

historical rainfall in a specific area. Consult your state or an EPA
regional office for details.

Table 4 Start Condition Requirements

Rain Enter the amount of rainfall and the time period when it must fall.

Level Level Limit

Rain and Level Enter the amount of rainfall and the time period when it must fall, and desired level limit.

Immediate No start condition required

External Trigger No start condition required

First Flush Bottles

First flush describes the initial storm water runoff. This runoff may contain
higher concentrations of pollutants and is sequestered in separate bottles
from the flow or time-weighted composite samples.

a. Enter the number of bottles to set aside for the First Flush portion of

the sampling program using the numeric keypad.

Page 55

8990startup.fm Advanced Sampling

Section 3

The number of first flush bottles will depend on the sample volume
requirements in the NPDES permit.

11:00 AM 21 - APR - 01 STORM WATER

ACCEPT FIRST FLUSH:

NUMBER OF BOTTLES:

CANCEL

ENTER: 1— 4

1CLEAR

ENTRY

b. Enter number of samples to collect using the numeric keypad.

11:00 AM 21 - APR - 01 STORM WATER

ACCEPT FIRST FLUSH:

SAMPLER TO COLLECT:

CANCEL

ENTER 1 — 999

6CLEAR

ENTRY

c. Enter the first flush sampling interval. This is the time period between

sample cycles. The first flush samples are usually collected within
thirty minutes of the storm.

11:00 AM 21 - APR - 01 SETPOINT SAMPLING

ACCEPT FIRST FLUSH

INTERVAL:

CANCEL

ENTER: 000:00 — 999:00 (hrs:min)

(hrs:min) CLEAR

ENTRY

Variable time intervals may be entered or the same interval may be carried
through the entire first flush. Pressing

FINAL ENTRY carries the last displayed

interval through the remainder of the first flush sampling period.

d. Enter the first flush sample volume using the numeric keypad.

11:00 AM 21 - APR - 01 STORM WATER

ACCEPT FIRST FLUSH:

SAMPLE VOLUME

CANCEL

ENTER 10 — 9999

e. Enable or Disable Program Time Limit using the

100 mL CLEAR

ENTRY

CHANGE CHOICE

key. When enabled, the Program Time Limit will stop all sampling
activity at the end of the time limit, however data logging will continue.

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Advanced Sampling

8990startup.fm

Section 3

f. Enter the Program Time Limit. NPDES typically requires monitoring

during the first three hours of any given storm. If the flow volume was
not as high as expected, flow-weighted sampling could continue for
some time as flow rates drop off and sample intervals
become longer.

11:00 AM 21 - APR - 01 SETPOINT SAMPLING

ACCEPT STORM WATER:

PROGRAM TIME LIMIT:

CANCEL

ENTER: 000:01 — 999:00 (hrs:min)

(hrs:min) CLEAR

ENTRY

Step 17 - Timed Bottle Sets

Timed Bottle Sets enables a single sampler to function like multiple samplers.
Timed Bottle Sets takes a 24-bottle sampler and sample using the first 12
bottles on the first day and the second bottles on the next day.

When a subset of bottles is set aside for each user defined time interval the
sampler will treat that subset as if it were the entire set. At the end of the time
interval the sampler will switch to the next subset and continue sampling.

17-A. Highlight Timed Bottle Sets using the

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

17-B. Enable or Disable Timed Bottle Sets using the

g. Press

ACCEPT to continue to Timed Bottle Sets.

Advanced Sampling Menu. Press

SPECIAL PUTPUT

SELECT

RETURN

Press

START/STOP TIMES
STORM WATER

TIMED BOTTLE SETS

UPSET SAMPLE
VARIABLE INTERVALS

ACCEPT to continue.

UP and DOWN keys on the

SELECT to continue.

CHANGE CHOICE key.

17-C. Select a method for switching bottle sets. Select either clock time that

switches bottle sets every 24 hours or select duration that sets the
bottles sets in minutes and hours.

11:00 AM 21 - APR - 01 TIMED BOTTLE SETS

ACCEPT

CANCEL

USE CLOCK TIME OR

DURATION:

DURATION (hh:mm)

CHANGE

CHOICE

The number of bottles that were selected in bottles-per-sample mode are
used as the bottle set size. Two bottles per-sample means two bottles per
Timed Bottle Set.

Page 57

8990startup.fm Advanced Sampling

Section 3

17-D. Enable or Disable Continuous Mode using the CHANGE CHOICE key. If

Continuous Mode is enabled the program will continuously run and
switch bottle sets after every specified duration elapses, until manually
stopped. If Continuous Mode is disabled, then the sampling halts when
the last bottle set in the tray is full.

Step 18 - Upset Sample

Note: Unlike Setpoint Sampling,
Upset Sampling can be enabled
while the sampler is performing its
regular sampling program. There
must be more than one bottle in the
sampler to perform Upset Sampling.

17-E. Press

ACCEPT to continue to Upset Sample.

Upset Sampling analyzes the collected samples to determine when samples
meet or exceed specified upset limits. The sampler will swing the distributor
arm around to a sequestered set of bottles and grab an upset bottle.

The upset sample bottles are always the last bottles in the tray. For example, if
there are 24 bottles in the tray, 4 first flush bottles and 4 upset bottles, then the
bottles assignment is 1–4 first flush, 5–20 main program, and 21–24
upset samples.

Upset Samples are collected even when there are no more regular samples to
be taken; when the status screen says Program Complete, but the bottom line
of the display says Program Running.

Refer to the Quick Start Guides on page 103 for more setup information for
individual channels.

18-A. Highlight Upset Sampling using the

Advanced Sampling Menu. Press

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

START/STOP TIMES

SELECT

RETURN

STORM WATER
TIMED BOTTLE SETS

UPSET SAMPLING

VARIABLE INTERVALS
VARIABLE VOLUME

UP and DOWN keys on the

SELECT to continue.

Page 58
Advanced Sampling

18-B. Enable or Disable Upset Sampling using the

Press

ACCEPT to continue.

18-C. Press

18-D. Press either

CHANGE CHOICE to select the desired channel to trigger from.

Press

ACCEPT to make the selection.

HIGH CONDITION or LOW CONDITION.

CHANGE CHOICE key.

• Flow Rate of Change and Rainfall are signals that only increase in

value and do not require Low Condition.

• The external control signal (such as an external flow meter) must be

configured in the external equipment for the desired setpoint.

11:00 AM 21 - APR - 01 UPSET SAMPLES

HIGH

UPSET CONDITION:

CONDITION

LOW

CONDITION

8990startup.fm

Section 3

18-E. Enter the desired high or low trigger point using the numeric keypad.

Press

ACCEPT to continue.

11:00 AM 21 - APR - 01 UPSET SAMPLES

ACCEPT UPSET SAMPLING:

HIGH TRIGGER POINT:

CANCEL

(USE NUMERIC KEYPAD)

18-F. Enter the Deadband value or, if programming for Flow Rate Of Change

or Rainfall, enter a time interval when the flow or rainfall change must
take place (refer to Alarm Relays Programming on page 91).

11:00 AM 21 - APR - 01 UPSET SAMPLES

ACCEPT UPSET SAMPLING

DEADBAND:

CANCEL

(USE NUMERIC KEYPAD)

00000 in. CLEAR

ENTRY

0.000 CLEAR
ENTRY

18-G. Enter the number of bottles (out of the total set) to set aside for upset

samples. These will be the last bottles in the tray.

11:00 AM 21 - APR - 01 UPSET SAMPLES

ACCEPT UPSET SAMPLING:

NUMBER OF BOTTLES

CANCEL

ENTER 1 — 4

2CLEAR

ENTRY

18-H. Select the method of distribution, Sample Per Bottle or

Bottles Per Sample.

18-I. Enter the sample volume using the numeric keypad.

11:00 AM 21 - APR - 01 UPSET SAMPLES

ACCEPT UPSET SAMPLING

SAMPLE VOLUME:

CANCEL

ENTER 10 — 9999

0000 CLEAR

ENTRY

18-J. Press

8990startup.fm Advanced Sampling

ACCEPT to continue to Variable Intervals.

Page 59

Section 3

Step 19 - Variable Intervals

19-A. Highlight Variable Intervals using the UP and DOWN keys on the

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

Advanced Sampling Menu. Press

STORM WATER

SELECT

RETURN

TIMED BOTTLE SETS
UPSET SAMPLING

VARIABLE INTERVALS

VARIABLE VOLUME

SELECT to continue.

Step 20 - Variable Volume

19-B. Enable or Disable Variable Intervals using the

Press

ACCEPT to continue.

19-C. Set sample intervals using the numeric keypad. Press

another interval or press

ACCEPT AS FINAL to return to the Advanced

CHANGE CHOICE key.

ACCEPT to enter

Sampling menu and continue to Variable Volumes.

20-A. Highlight Variable Volume using the UP and DOWN keys on the

Advanced Sampling Menu. Press

11:00 AM 21 - APR - 01 ADVANCED SAMPLING

TIMED BOTTLE SETS

SELECT

RETURN

UPSET SAMPLES
VARIABLE INTERVALS

VARIABLE VOLUME

20-B. Enable or Disable Variable Volume using the

Press

ACCEPT to continue.

SELECT to continue.

CHANGE CHOICE key.

20-C. Enter the Sample Volume counts using the numeric keypad. Press

ACCEPT to return to the Advanced Sampling Menu.

Page 60
Advanced Sampling

8990startup.fm

Section 4 Sensor Setup

4.1 Downlook Ultrasonic Sensor

4.1.1 Downlook Ultrasonic Sensor Connection

The downlook ultrasonic sensor connection is located on the back side of the
refrigerated cabinet. The gray rectangular box houses the ultrasonic module
and the transducer connector labeled ULTRASONIC. The connector is keyed
and can only be inserted in the proper orientation (key up).

4.1.2 Downlook Ultrasonic Sensor Programming

The downlook ultrasonic sensor does not require specific programming,
unless more than one sensor option is connected to the sampler. When more
than one sensor option is connected to the sampler:

1. From the Main Menu, select

2. Select Ultra-Sonic using the CHANGE CHOICE key. Press ACCEPT.

4.1.3 Downlook Ultrasonic Sensor Calibration

Calibrate the current water level via one of two methods; Liquid Depth or
Sensor Height. An Invisible Range can also be set which allows the
transducer to ignore reflections from obstructions between the sensor and the
water surface, such as ladder rungs, channel side walls, etc. Each method
has its own advantages and disadvantages; selecting the proper method will
depend upon the site conditions. Calibrate the ultrasonic sensor each time the
sensor is installed at a new site.

4.1.3.1 Liquid Depth

This method requires the level or depth of liquid in the channel that is
contributing to flow. In a round pipe, the entire depth typically contributes to
flow. In a weir, only the depth that is flow over the weir plate contributes to
flow. Level Depth calibration is primarily used when:

• Access is available to the primary device for a physical measurement of
the liquid depth, and

• When water is flowing during installation (channel is not dry).

OPTIONS>LEVEL SENSOR.

Note: Always re-check the
Level Adjust when re-installing the
flow meter.

8990sensors.fm Sensor Setup

1. From the Main Menu, select OPTIONS>ADVANCED

OPTIONS>CALIBRATION>ULTRASONIC SENSOR.

2. Select Calibrate U-Sonic using the UP and DOWN keys. Press SELECT.

3. Select Standard as the type of Ultrasonic Transducer using the

CHOICE

Temperature Time Constant

The speed of sound in air varies with the temperature of the air. The ultrasonic
sensor is equipped with temperature compensation to help eliminate the
effect of temperature variation under normal site conditions. The transducer
must be equal to the ambient air temperature at the site prior to calibration for
optimum results. The manufacturer recommends that sensors be shielded
from direct sunlight for this reason.

key. Press ACCEPT to continue.

CHANGE

Page 61

Section 4

4.1.3.2 Sensor Height

4. Enter the ambient air temperature at the transducer location. For optimum

results, allow enough time (100 minutes) to ensure that the sensor is at
equilibrium with the surrounding ambient temperature. Press

ACCEPT.

5. Select the Liquid Depth method and enter the new level.

6. Take a physical measurement of the liquid depth (level) and enter

the value. Press

ACCEPT when finished.

This method requires entering the distance between the face of the ultrasonic
sensor and the zero flow point in the primary device. The zero flow point in a
primary device is the level at which flow ceases. In a round pipe the zero flow
point would typically be the invert or bottom of the pipe. In a V-notch weir the
zero flow point occurs when the liquid behind the weir is level with the bottom
of the ‘V’. (There would still be liquid behind the weir plate but it would not be
contributing to flow). Sensor Height calibration is generally used when:

• Access to the primary device is difficult (such as confined space entry in a
manhole) or

• There is no liquid flowing during installation of the flow meter

1. From the Main Menu, select

2. Select Calibrate U-Sonic using the UP and DOWN keys. Press SELECT.

3. Select Standard as the type of Ultrasonic Transducer using the

4. Enter the ambient air temperature at the transducer location. For optimum

5. Select the Sensor Height method and enter the new level.

6. Enter the distance from the face of the transducer to the zero flow point of

7. Press

4.1.3.3 Setting the Invisible Range

OPTIONS>ADVANCED

OPTIONS>CALIBRATION>ULTRASONIC SENSOR.

CHANGE

CHOICE

key. Press ACCEPT to continue.

The speed of sound in air varies with the temperature of the air. The
ultrasonic sensor is equipped with temperature compensation to help
eliminate the effect of temperature variation under normal site conditions.

results, allow enough time (100 minutes) to ensure that the sensor is at
equilibrium with the surrounding ambient temperature. Press

ACCEPT.

the primary device.

ACCEPT when finished.

Page 62
Downlook Ultrasonic Sensor

1. From the Main Menu, select OPTIONS>ADVANCED

OPTIONS>CALIBRATION>ULTRASONIC SENSOR.

2. Select the Invisible Range option using the UP and DOWN keys. Press

SELECT to continue.

3. Enter the Distance to End of the Invisible Range.

8990sensors.fm

Section 4

4. Select either inches or centimeters using the CHANGE UNITS key. The

distance must be greater than the minimum deadband of 10 in. (25.4 cm)
for the 75 kHz sensor and 15 in. (38.1 cm) for the 50 kHz sensor.

5. Press

ACCEPT when finished.

4.2 Submerged Area/Velocity Sensor

The Submerged area/velocity sensor simultaneously measures level
and velocity.

4.2.1 Submerged Area/Velocity Sensor Connection

Table 5 Submerged/Area Velocity Sensor Connection

Pin Signal Description Wire Color Bare Leads

A +12 V dc Red Red

B ground Green Green

C Receive (ground) B/W Shield Yellow

D Receive (+) B/W Center Orange

E Transmit (ground) Black Shield Violet

F Transmit (+) Black Center Gray

G Depth (-) Black Black

H Depth (+) White White

Recommended Routing of Submerged Area/Velocity Cable

Proper routing of the cable serves two functions:

• Keeps the in-line desiccant assembly inside the cover and out of the way
when installing and removing the sampler from tight manholes.

• Keeps the desiccant out of direct contact with the elements. Also, keeps
water from dripping directly onto the desiccant assembly.

To secure the submerged area velocity cable, route the cable around the
battery and clip it under the battery hold downs.

4.2.2 Submerged Area/Velocity Sensor Programming

1. From the Main Menu, select OPTIONS>LEVEL SENSOR.

2. Select Submerged Xducer using the CHANGE CHOICE key. Press

ACCEPT.

3. From the

4. Highlight Velocity Direction using the UP and DOWN keys. Press SELECT.

5. Set the velocity direction (upstream, downstream, or always positive)

using the

MAIN MENU, select SETUP>MODIFY SELECTED ITEMS.

CHANGE CHOICE key. Press ACCEPT to continue.

6. Highlight Velocity Units using the

8990sensors.fm Submerged Area/Velocity Sensor

UP and DOWN keys. Press SELECT.

Page 63

Section 4

7. Set the Velocity Units (fps or m/s), using the UP and DOWN arrow keys.

Press

ACCEPT to continue.

8. Highlight Velocity Cutoff, using the

UP and DOWN keys. Press SELECT.

9. Read the Velocity Cutoff information screen. Press any key to continue.

10. Set the Velocity Cutoff using the numeric keypad. Press

ACCEPT.

11. Set the Velocity Default, using the numeric keypad. Press

RETURN to go back to the Setup Menu or Main Menu to return to the Main

Menu display.

4.2.3 Submerged Area/Velocity Submerged Area/Velocity Sensor Calibration

This calibration requires a graduated cylinder or bucket with at least
16 cm (6 in.) of water and a ruler. Calibrating the Submerged Area/Velocity
Sensor characterizes the sampler electronics to the unique characteristics of
each individual sensor. In addition, the calibration compensates for any
sensor drift that may occur over time (6 months or greater) as the materials in
the sensor age.

The Submerged Area/Velocity Sensor is a pressure transducer that contains a
stainless steel diaphragm. As the water pressure increases, (with increasing
level in the flow stream) the diaphragm is deflected, or pushed, against a solid
state device called a strain gauge. The strain gauge converts the pressure
against the diaphragm to a voltage. As the level in the flow stream increases,
so does the voltage coming from the Submerged Area/Velocity Sensor. The
voltage is read by the microprocessor in the sampler at regular intervals and
converted to a number that represents the level in the flow stream.

ACCEPT. Press

The manufacturer recommends calibrating the submerged area/velocity
sensor when:

• The sensor is first used.

• Installing a new or different sensor on a flow meter or input receptacle.

• The difference between the level reading of the flow meter and the

independent verification (measurement with a dipstick or ruler)
is increasing.

Note: The data is constant if the difference between the level reading of the flow meter

and the independent verification is constant; recalibration is not required.

Note: Errors can occur with the flow meter level reading and the independent

verification. Errors are caused by variation in site conditions and measurement
abilities. These errors may cause slight changes in the difference, therefore, not
indicating a true change in the difference.

1. From the Main Menu, select OPTIONS > ADVANCED OPTIONS >

CALIBRATION > SUBMERGED PROBE.

2. Place the sensor flat on a table top or floor with the sensor (the plate with

holes) facing down onto the surface (Figure 17). Press any key to
continue.

Page 64
Submerged Area/Velocity Sensor

8990sensors.fm

Section 4

3. Place the sensor face up in the bucket or liquid. Tap lightly to remove air

bubbles. If these bubbles are not removed you can receive false readings
from the sensor during calibration (Figure 17).

Note: Always check the Level
Adjust when reinstalling the sampler
following a calibration. (See Keypad

Description on page 16.)

Figure 17 Calibrating the Submerged Area/Velocity Sensor

4. Place the sensor face down under at least 16 cm (6 in.) of water and wait

20 seconds. Make sure the water surface is calm and the sensor is stable.

5. Press any key to continue.

6. Measure the depth from the bottom of the bucket to the surface of the

water and enter the value using the numeric keypad (Figure 17).

7. Press

ACCEPT.

4.3 Submerged Pressure Sensor

The submerged pressure sensor is a pressure transducer that contains a
titanium diaphragm. As the water pressure increases, (with increasing level in
the flow stream) the diaphragm is deflected, or pushed, against a solid state
device called a strain gauge. The strain gauge converts the pressure against
the diaphragm to a voltage. As the level in the flow stream increases, the
voltage coming from the submerged pressure sensor increases. The voltage
is read by the microprocessor in the Sampler at a regular interval and
converted to a number which represents the level in the flow stream. The level
reading can then be converted by the meter to a flow rate based on the
mathematical formula for the selected primary device.

4.3.1 Submerged Pressure Sensor Connection

The submerged pressure sensor connection is located on the left side of the
controller housing and is labeled submerged pressure sensor. The connector
is keyed and can only be inserted in the proper orientation (key up).

Page 65

8990sensors.fm Submerged Pressure Sensor

Section 4

Table 6 Submerged Level Sensor Base Board Connection (J21)

Pin Signal Description Wire Color

AV + Red

B Out + Yellow

C Out - Green

DGround Black

4.3.2 Submerged Pressure Sensor Programming

1. From the Main Menu, select OPTIONS>LEVEL SENSOR.

2. Select Submerged Xducer using the CHANGE CHOICE key and press

ACCEPT.

4.3.3 Submerged Pressure Sensor Calibration

In sites with harsh conditions (extremes of level, temperature, harsh
chemicals, etc.) calibration should be performed more often.

1. From the Main Menu, select

CALIBRATION > SUBMERGED PROBE.

2. Choose the orientation that the sensor will be mounted in the flow stream,

horizontal or vertical, using the

11:00 AM 21 - APR - 01 CALIBRATION

ACCEPT ORIENTATION OF

CANCEL

3. Lift the sensor out of the water and hold it in the air in the same orientation

that you selected in the previous step (horizontal or vertical) (Figure 18).
Then press

Figure 18 Lifting the Sensor Out of the Water

Horizontal Vertical

OPTIONS > ADVANCED OPTIONS >

CHANGE CHOICE key. Press ACCEPT.

CHANGE

CHOICE

SUBMERGED PROBE:

HORIZONTAL

SELECT APPROPRIATE UNITS

ACCEPT to continue.

Page 66
Submerged Pressure Sensor

4. Follow either the vertical or horizontal procedure below.

8990sensors.fm

Section 4

Vertical Orientation Only

a. Place the sensor under at least 16 cm (6 in.) of water in a vertical

orientation. Make sure the sensor is stable and not moving around.
Then press

ACCEPT to continue.

b. Carefully measure the depth (D

) from the surface of the water to the

1

first weld mark that encircles the sensor body just above the breather
vent holes (Figure 19). The weld mark indicates the location of the
internal diaphragm.

c. Enter the depth (D

) and press ACCEPT when done.

1

Figure 19 Measuring Submerged Depth, Vertical Orientation

1

2

3

1. Gray Band 2. Breather Vents 3. Detachable Nose Cone

D

1

Horizontal Orientation Only

Note: Always check the Level
Adjust when reinstalling the sampler
following a calibration.

a. Place the sensor under at least 16 cm (6 in.) of water in a horizontal

orientation. Make sure the sensor is stable and not moving around.
Then press

ACCEPT to continue.

b. Measure the depth from the bottom of the bucket to the surface of the

water (D

) (Figure 20) and enter the value. Press the ACCEPT.

1

Figure 20 Measuring Submerged Depth, Horizontal Orientation

D

1

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8990sensors.fm Submerged Pressure Sensor

Visit http: //www.hach.com

Section 5 Optional Device Installation

This section describes how to setup a rain gauge to the Sampler as well as
how to connect, program, calibrate, and maintain the optional water
quality probes:

• Rain Gauge (section 5.1 on

page 69

• pH Probe
(section 5.2 on page 70)

• ORP Probe
(section 5.3 on page 72)

5.1 Rain Gauge

An external “tipping bucket” rain gauge (Cat. No. 2149) can be connected to
the Rain Gauge connector of the sampler (Figure 21). The rain gauge
provides a dry contact closure to the sampler.

As rainfall collects in the 20 cm (8 in.) diameter funnel, it is directed into one
side of a “tipping bucket” assembly. As each bucket fills, it causes the bucket
assembly to tip and empty out into the bottom of the rain gauge. Each tip of
the bucket causes a single contact closure to the rain gauge and sends a
short 12 V dc pulse into pin C of the Rain Gauge connector. Each pulse (tip)
represents 0.025 cm (0.01 in.) of rain.

Figure 21 Rain Gauge Tipping Bucket

• Dissolved Oxygen Probe

(section 5.4 on page 74)

• Conductivity Probe
(section 5.5 on page 76)

Table 7 Rain Gauge Base Board Connections (J5)

Pin Signal Description

A +12 V dc source output

B not used

C +12 V dc pulse input

D not used

E not used

F not used

Page 69

8990options.fm Optional Device Installation

Section 5

5.1.1 Rain Gauge Programming

1. From the Main Menu select OPTIONS>ADVANCED OPTIONS>DATALOG.

2. Highlight Select Inputs using the UP and DOWN keys and press SELECT.

Note: When logging is enabled, an
arrow will point to the logged
channel.

5.2 pH Probe

5.2.1 pH Probe Connection

3. Highlight Rainfall using the UP and DOWN keys and press SELECT.

4. Press the

Logged, then press

5. Enter a logging interval using the numeric keypad, then press

CHANGE CHOICE key to cycle between Logged and Not

ACCEPT.

ACCEPT.

Valid logging intervals are shown on the status bar along the bottom edge
of the display.

6. Select Rainfall Units (in. or cm).

7. Select another channel to configure, or press

step. Press the

MAIN MENU key to return to the Main Menu.

RETURN to back up one

The pH probes are shipped with a wetting cap that covers the probe tip.
Remove the cap by turning it counter-clockwise and gently easing it off. Keep
this cap for long-term probe storage. Rinse the probe tip with distilled water.

Store the probe in a pH 4.0 buffer (Cat. No. 2104) for both overnight and long
term storage. Never store a probe in distilled or deionized water because this
will deplete the probe filling solution.

This connector is for installing the pH or ORP pre-amp interface junction box
or a stand-alone temperature sensor. The pH probe is attached to a terminal
strip in the junction box. The stand-alone temperature probe plugs directly into
the receptacle on the case.

Page 70
pH Probe

The pre-amplifier junction box is provided to allow for fast, easy replacement
of the pH probe.

Table 8 pH Connector Pin Assignments (J3)

Pin Signal Description Wire Color

A+5 V dc White

B ground Blue

C reference Yellow

DpH/ORP Black

E -5 V dc Red

FRTD Green

Since the pH reading needs to compensate for temperature variation, a
temperature sensor is built into every pH electrode. The pH probe consists of
five wires, three for the pH probe and two for the temperature sensor.

Stray electrical currents are sometimes found in wastewater stream. These
stray electrical currents can affect the pH readings. In the case of stray
electrical currents, a grounded pH probe is required. See Figure 22.

8990options.fm

Section 5

Figure 22 pH Probe Wiring to Junction Box (grounded)

GND

REF

RTD

RTD

Red

Black

pH

Glass

Figure 23 pH Probe Wiring to Junction Box (un-grounded)

GND

REF

RTD

RTD

Yellow

Green

Clear

Yellow

Green

Red

5.2.2 pH Probe Programming

1. From the Main Menu, select OPTIONS>ADVANCED OPTIONS>DATALOG.

2. Highlight Select Inputs using the UP and DOWN keys and press SELECT.

3. Highlight pH using the

4. Press the

5. Enter a logging interval, then press

6. Select another channel to configure or press

5.2.3 pH Probe Calibration

Calibrate the pH probe after the pH probe is connected and programmed.
Calibrating the pH probe requires a thermometer and any two of the following
buffer solutions: 4, 7, or 10 pH.

Glass

CHANGE CHOICE key to cycle between Logged and Not

Logged, then press

pH

UP and DOWN keys, then press SELECT.

ACCEPT.

Clear

ACCEPT. Valid logging intervals are

shown on the status bar along the bottom edge of the display.

RETURN to back up one

step. Press

MAIN MENU to return to the Main Menu display.

The pH probe is an application sensitive device. When used in harsh
environments, the accuracy and life expectancy of pH probes can decrease.

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8990options.fm pH Probe

Section 5

Probes must be calibrated to the sampler each time they are cleaned or
replaced. Regular inspection and comparison to a hand-held pH meter can
help determine the optimum cleaning and calibration schedule for
specific applications.

1. From the Main Menu, select

CALIBRATION > pH.

OPTIONS > ADVANCED OPTIONS >

2. Place the pH probe into the first buffer solution, then press any key

to continue.

3. Enter the temperature of the first buffer solution using the numeric
keypad. Press

ACCEPT to continue.

4. Select the pH for the first buffer solution (4, 7, or 10 pH) using the

CHANGE CHOICE key, then press ACCEPT.

5. Remove the probe from the first buffer solution, rinse it under distilled

water and place it into the second buffer solution (4, 7, or 10 pH, different
from the first buffer used). Press any key to continue.

6. Select the pH for the second buffer solution using the
key, then press

ACCEPT.

CHANGE CHOICE

If the pH probe is damaged and cannot be calibrated or if the buffer
solutions do not fall within an acceptable range, an error message will be
displayed as shown below.

11:00 AM 21 - APR - 01 ERROR MESSAGE

5.3 ORP Probe

5.3.1 ORP Probe Connection

pH CALIBRATION FAILED-GAIN

AND/OR OFFSET OUT OF RANGE

TRY AGAIN

(PRESS ANY KEY TO CONTINUE)

Another attempt at reading the second buffer solution will be made after
pressing a key. If this fails, it is likely that you have a bad pH probe or bad
buffer solutions. Try a new set of buffer solutions and if that fails try a
different pH probe

The probes are shipped with a wetting cap that covers the probe tip. Remove
the cap by turning it counter-clockwise and gently easing it off. Keep this cap
for long-term probe storage. Rinse the probe tip with distilled water.

Store the probe in a pH 4.0 buffer (Cat. No. 22834-49) for both overnight and
long term storage. Never store a probe in distilled or deionized water because
this will deplete the probe filling solution.

This connector is for installing the pH or ORP pre-amp interface junction box
or a stand-alone temperature sensor. The ORP probe is attached to a
terminal strip in the junction box.

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ORP Probe

8990options.fm

Section 5

Table 9 ORP Connector Pin Assignments (J3)

Pin Signal Description Wire Color

A+5 V dc White

B ground Blue

C reference Yellow

DpH/ORP Black

E5 V dc Red

FRTD Green

The ORP probe consists of three wires; a pink, black, and red wire. There is
no temperature sensor on the ORP probe.

1. Attach the clear wire to either screw on the terminal strip labeled GLASS.

2. Attach the black wire to the REF screw on the other terminal strip.

3. Attach the red wire to the GND screw on the terminal strip.

5.3.2 ORP Probe Programming

1. From the Main Menu, select OPTIONS>ADVANCED OPTIONS>DATALOG.

2. Highlight Select Inputs using the UP and DOWN keys and press SELECT.

3. Highlight ORP using the

4. Press

CHANGE CHOICE to cycle between Logged and Not Logged, then

press

ACCEPT to continue.

5. Enter a logging interval, then press

shown on the status bar along the bottom edge of the display.

6. Select another channel to configure or press
step. Press

MAIN MENU to return to the Main Menu.

5.3.3 ORP Probe Calibration

5.3.3.1 ORP Preamplifier/Junction Box Calibration

Calibration of the ORP input circuit requires a source of dc voltage between
500 and 2000 m V dc. The reference voltage must be applied to the ORP
input terminals on the preamplifier/junction box during calibration. A regulated
dc power supply or a standard “C” cell battery (1500 mV dc) make excellent
sources for reference voltage.

UP and DOWN keys, then press SELECT.

ACCEPT. Valid logging intervals are

RETURN to back up one

1. From the Main Menu, select

CALIBRATION > ORP.

OPTIONS > ADVANCED OPTIONS >

2. Install the ORP junction box on the sampler with the ORP probe removed.

3. Apply a positive reference voltage to the ORP probe terminals in the

junction box, using either a 1.5 V dc “C” cell battery or a regulated
power supply.

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8990options.fm ORP Probe

Section 5

4. Attach the positive battery terminal to the terminal block screw labeled

“glass” and the negative battery terminal to the terminal block screw
labeled “ref.”

5. After making all connections, measure the exact voltage on the “C” cell or
power supply with a voltmeter. Then press a key to continue. The sampler
displays the message “Waiting for ORP to Stabilize.”

6. Once the reading is sufficiently stable enter a new millivolt level. The “C”
cell battery should be approximately 1500 mV (or 1.5 V) when new. Enter
the exact voltage of the current source in millivolts.

7. Press

ACCEPT to store the new calibration values.

8. Disconnect the “C” cell battery or regulated power supply from the ORP

input terminals.

9. Reconnect the ORP Probe leads to the input terminals.

5.4 Dissolved Oxygen Probe

5.4.1 Dissolved Oxygen Probe Connection

This connection is for interfacing the optional D.O. probe to the
D.O./Conductivity Pre-Amp (Cat. No. 3369).

Table 10 D.O. Connections (J20)

Pin Signal Description Wire Color

A DO - (neg) Green

B DO + (pos) Red

C Thermister Black

D Thermister Yellow

Strain Relief Recommendation

A strain relief is recommended to protect the cable/probe junction during
application where the sensor will be thrown or tossed into liquid.

5.4.2 Dissolved Oxygen Probe Programming

Note: The membrane thickness
must be programmed into the
instrument. The instrument uses

this information to determine if the
sensor is generating a reasonable
current. Failure to program this
value may result in false error
conditions

Page 74
Dissolved Oxygen Probe

1. From the Main Menu, select OPTIONS>ADVANCED OPTIONS>DATALOG.

2. Highlight Select Inputs using the UP and DOWN keys and press SELECT.

3. Highlight D.O. using the

4. Press

CHANGE CHOICE to cycle between Logged and Not Logged, then

press

ACCEPT.

5. Enter a logging interval, then press

shown on the status bar.

6. Press

CHANGE CHOICE to select the appropriate units (ppm, ppb, mg/L,

sat). Press

ACCEPT to continue.

7. Select another channel to configure, press

or press

MAIN MENU to return to the Main Menu.

UP and DOWN keys, then press SELECT.

ACCEPT. Valid logging intervals are

RETURN to back up one step

8990options.fm

5.4.3 Dissolved Oxygen Probe Temperature Programming

1. From the Main Menu, select OPTIONS>ADVANCED OPTIONS>DATALOG

2. Highlight Select Inputs using the UP and DOWN keys and press SELECT.

Section 5

3. Highlight D.O. Temp. using the

4. Cycle between Logged and Not Logged, then press

5. Enter a logging interval using the numeric keypad, then press

Valid logging intervals are shown on the status bar.

6. Select temperature units (°C, °F) using

5.4.4 Dissolved Oxygen Probe Calibration

The Dissolved Oxygen Probe is shipped without an electrolyte or membrane
installed. Install these items before initial use.

1. Connect a suitable power supply to the sampler, and power up the unit by
pressing the

2. From the Main Menu, select

CALIBRATION > DO.

3. Enter the ambient air temperature (the current reading is displayed for

reference) using the numeric keypad.

4. Enter the elevation above sea level for the specific location.

UP and DOWN keys, then press SELECT.

ACCEPT.

ACCEPT.

CHANGE CHOICE. Press ACCEPT.

ON button.

OPTIONS > ADVANCED OPTIONS >

Note: The membrane of a charged
sensor must be kept moist. If the
membrane is allowed to dry
completely, the electrolyte film
between the membrane and the
platinum will evaporate,
destabilizing the sensor. If the
sensor will be out of water for more
than 30 minutes, put a small amount
of water in the silicon soaking cap,
and install it over the protective
guard. Lift the edge of the cap to
break the seal as it is being
removed. This will prevent a vacuum
from forming inside the soaking cap
while it is being removed which can
result in the membrane becoming
stretched.

5. Enter the membrane thickness. The operation of the sampler will be
affected by membrane thickness for the oxygen sensor.

For general purpose applications, the 1-Mil membrane is standard. This
membrane allows measurements in the 0 to 20 ppm range of dissolved
oxygen and provides the best response time and durability.

The 2-Mil membrane can be used to measure up to 40 ppm dissolved oxygen.
Its increased thickness slows the response time of the sensor, but this
membrane has increased resistance to cuts and tears. For this reason, it is
recommended for use in wastewater aeration basins where solids in the water
are in rapid motion.

6. Enter the chlorinity (salinity) of the flow stream (typical wastewater is zero,
sea water is higher).

7. Place the D.O. probe in open air and press any key. The sampler will wait
for the reading to stabilize before storing the calibration value. The screen
will automatically return to the calibration menu.

Calibrating the D.O. Temperature

1. Place the probe and the thermometer in a liquid.

2. Wait for the temperature reading to stabilize.

3. Enter the actual temperature of the liquid.

Page 75

8990options.fm Dissolved Oxygen Probe

Section 5

5.5 Conductivity Probe

5.5.1 Conductivity Probe Connection

Table 11 Conductivity Probe Wiring (J20)

Pin Signal Description Wire Color

A Probe Black

B Probe Red

CRTD White

D RTD Green

5.5.2 Conductivity Probe Programming

1. From the Main Menu, select OPTIONS>ADVANCED OPTIONS>DATALOG.

2. Highlight Select Inputs using the UP and DOWN keys. Press SELECT.

3. Highlight Conductivity (COND.) using the

4. Press

CHANGE CHOICE to cycle between Logged and Not Logged, then

press

ACCEPT.

5. Enter a logging interval using the numeric keypad, then press

Valid logging intervals are shown on the status bar along the bottom edge
of the display.

6. Press

CHANGE CHOICE to select the appropriate units (ms, µs). Press

ACCEPT to continue.

7. Select another channel to configure or press

step. Press

MAIN MENU to return to the Main Menu display.

5.5.3 Conductivity Temperature Programming

1. From the Main Menu, select OPTIONS>ADVANCED OPTIONS>DATALOG.

2. Highlight Select Inputs using the UP and DOWN keys and press SELECT.

3. Highlight Conductivity Temperature (COND. TEMP.) using the

DOWN keys, then press SELECT.

UP and DOWN. Press SELECT.

ACCEPT.

RETURN to back up one

UP and

Page 76
Conductivity Probe

4. Press

5. Enter a logging interval using the numeric keypad, then press

CHANGE CHOICE to cycle between Logged and Not Logged, then

press

ACCEPT.

ACCEPT.

Valid logging intervals are shown on the status bar along the bottom edge
of the display.

6. Press

CHANGE CHOICE to select temperature units (°C, °F).

Press

ACCEPT.

8990options.fm

5.5.4 Conductivity Probe Calibration

1. From the Main Menu, select OPTIONS > ADVANCED OPTIONS >

CALIBRATION > CONDUCTIVITY.

2. Clean and dry the probe.

3. Place the sensor and thermometer in the calibration solution

(Cat. No. 3230). The temperature sensor is located in the middle of the
sensor body allowing the probe to be completely submerged in
the solution.

4. Allow the sensor to stabilize in the solution about 10 minutes to ensure
that the probe and the solution are the same temperature.

5. Enter the temperature correction factor or enter zero for no correction
factor.

Note: The temperature correction factor is used to compensate for the effects of

temperature on the conductivity readings at the point of installation. The
conductivity of a solution is temperature sensitive. Therefore the actual
conductivity of the solution will change with the temperature. Each site may have a
different correction factor depending on the major constituent of the flow stream.
This is not used for calibration and has no effect on the calibration of the sensor.
Below are some examples of compensation factors of various liquids.

Section 5

• 0.96%/°C 5% Sulfuric Acid

• 1.88%/°C Dilute Ammonia

• 1.91%/°C ‘Typical’ Wastewater

• 1.97%/°C Potassium Chloride

• 2.12%/°C Salt (Sodium Chloride)

• 2.84%/°C 98% Sulfuric Acid

• 4.55%/°C Ultra-pure Water

6. With the sensor still in the calibration solution, press any key. Wait for the
sensor to stabilize. Calculate the actual conductivity of the calibration
solution. If using the KCl solution provided by the manufacturer, make
your selection from the Table 12 on page 78. If using a solution other than

1.0 mS @ 25 °C KCl available from manufacturer, calculate the
conductivity of the solution using temperature correction factors. See the
following example.

Example: The KCl calibration solution is 1.0 mS at 25°C. If the actual
temperature of the KCl at the time of calibration is 18.4 °C, then the solution
has a conductivity value of 0.870 mS.

a. Find the difference between the labeled temperature and the actual

temperature of the calibration solution at the time of calibration.

25 °C – 18.4 °C = 6.6 °C

b. Multiply the difference (6.6) by the correction factor per °C (1.97% or

0.0197).

6.6 °C x 0.0197/°C = 0.13002

Page 77

8990options.fm Conductivity Probe

Section 5

c. If the calibration temperature is lower than the labeled value, then

subtract that value from the standard (1.0 mS) to get the actual value
to be used for calibration.

1.0 mS - (correction factor) 0.13002 = 0.86998 mS

d. If the calibration temperature is higher than the labeled value, then

add that value to the standard (1.0 mS) to get the actual value to be
used for calibration.

7. Using the value that was calculated in step 6, enter the conductivity of the
solution then press

ACCEPT to complete the calibration.

Calibrating the Conductivity Temperature

Note: Conductivity temperature
calibration is only necessary when
logging temperature.

Table 12 Conductivity Values at Temperature for Hach KCl Solution

Solution

Tem p °C

30 1.099 25 1.000 20 0.902

29.8 1.095 24.8 0.996 19.8 0.898

29.6 1.091 24.6 0.992 19.6 0.894

29.4 1.087 24.4 0.988 19.4 0.890

29.2 1.083 24.2 0.984 19.2 0.886

29 1.079 24 0.980 19 0.882

28.8 1.075 23.8 0.976 18.8 0.878

28.6 1.071 23.6 0.972 18.6 0.874

28.4 1.067 23.4 0.968 18.4 0.870

28.2 1.063 23.2 0.965 18.2 0.866

28 1.059 23 0.961 18 0.862

27.8 1.055 22.8 0.957 17.8 0.858

27.6 1.051 22.6 0.953 17.6 0.854

27.4 1.047 22.4 0.949 17.4 0.850

27.2 1.043 22.2 0.945 17.2 0.846

27 1.039 22 0.941 17 0.842

26.8 1.035 21.8 0.937 16.8 0.838

26.6 1.032 21.6 0.933 16.6 0.835

26.4 1.028 21.4 0.929 16.4 0.831

26.2 1.024 21.2 0.925 16.2 0.827

26 1.020 21 0.921 16 0.823

25.8 1.016 20.8 0.917 15.8 0.819

25.6 1.012 20.6 0.913 15.6 0.815

25.4 1.008 20.4 0.909 15.4 0.811

25.2 1.004 20.2 0.905 15.2 0.807

Calibration Value

to be Entered

1. Place the probe in a liquid and wait for the temperature reading

to stabilize.

2. Enter the actual temperature of the liquid (the current reading is shown for
reference). Temperature calibration is complete.

Solution

Tem p °C

Calibration Value

to be Entered

Solution

Tem p °C

Calibration Value

to be Entered

Page 78
Conductivity Probe

8990options.fm

Section 6 Communication Setup

Communication setup details connections and programming features of the:

• RS232 Serial Port (section 6.1 on page 79)

• Optional Modem (section 6.2 on page 80)

• 4–20 mA Option (section 6.3 on page 87)

• Alarm Relays (section 6.4 on page 89)

• Analog Inputs (section 6.5 on page 93)

6.1 RS232 Cable

6.1.1 RS232 Connection

The RS232 connector is a serial input/output port for communicating with a
sampler from an external device such as a Data Transfer Unit (DTU-II) or
direct serial connection to a personal computer with application software.

Table 13 RS232 Connection

Pin Signal Description Wire Color

A not used White

Bground Blue

C DSR Yellow

D RCD Black

EDTR Red

F TXD Green

6.1.2 RS232 Programming

Note: Some early generation IBM
compatibles may have a serial port
that is not capable of
communicating reliable at 19,200
baud. If errors develop at high baud
rates, try lowering the baud rate one
step at a time (on both the sampler
and Streamlogg II™, InSight

®

Vision

software) until error free

communications is achieved.

®

, or

Cable Required

RS232 Sampler/Flow Meter to PC Cable Assembly (Cat. No. 1727), 10 ft long,
6-pin connector on one end, 9-pin D connector on the other end (9-pin to
25-pin D type adapter included).

1. From the Main Menu, select OPTIONS > ADVANCED OPTIONS >

COMMUNICATIONS SETUP > RS232 SETUP

2. Select a baud rate for data communications by pressing the

CHOICE

key to cycle through the possible choices; 1200, 2400, 4800,

.

CHANGE

9600 or 19,200 baud. The higher the baud rate setting, the faster data will
transfer. Set the baud rate to the highest setting allowed by the computer.
The baud rate must correspond to the baud rate selected in the software.
Press

ACCEPT.

Note: Long runs of RS232 cable, especially if they are run near large motors or

fluorescent lights can cause communication errors and may require a slower
baud rate.

Page 79

8990cm.fm Communication Setup

Section 6

6.2 Modem

6.2.1 Modem Connection

Pin Signal Description

ATip

B Ring

C12 V dc

D 12 V dc Reference

6.2.2 Modem Programming

This connection is for interfacing the optional internal modem (Cat. No. 1602)
with a standard public telephone line.

Table 14 Modem CPU Connections (J8)

1. From the Main Menu, select OPTIONS>ADVANCED

OPTION>COMMUNICATIONS SETUP

.

Note: There is no way of independently enabling power to just the internal modem

without also enabling the power to the Cellular Communications Option if it is
present. However, this poses no problem even if the sampler is physically
connected directly to a phone line without a cellular phone.

2. Highlight Modem Setup using the UP and DOWN keys. Press ACCEPT.

11:00 AM 21 - APR - 01 COMUNICATION SETUP

SELECT

MODEM SETUP

RS232 SETUP

RETURN

3. Enable modem power by pressing the

CHANGE CHOICE key. Modem

power is turned off when not in use to conserve battery power.

11:00 AM 21 - APR - 01 MODEM SETUP

CHANGE

ACCEPT

MODEM POWER:

ENABLED

CANCEL

CHOICES: ENABLED, DISABLED

CHOICE

Page 80
Modem

8990cm.fm

Section 6

4. Select either pulse or tone dialing modes. This will depend on the type of

phone service selected for the site phone line. Press

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT

DIAL METHOD:

TONE

CANCEL

CHOICES: TONE, PULSE

5. Enter a phone number using the numeric keypad. This phone number is

used by the modem when it sends an alarm report to a personal
computer running InSight

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT

INPUT CHANNEL:

CANCEL

(USE NUMERIC KEYPAD)

software.

FLOW

ACCEPT.

CHANGE

CHOICE

CHANGE

CHOICE

6.2.2.1 Cellular Communication Option

Note: To ensure reliable
communications between the
sampler and the host computer, it is
required that the host computer is
equipped with a Cellular Compatible
modem, it must support the
MNP.10EC protocol. Computers
equipped with modems that do not
support this protocol are able to
connect to the sampler but will not
be able to maintain a reliable
connection.

Note: If the display on the cell
phone is not present, check to make
sure the cell phone power is
enabled in the setup of the sampler.
Also check to make sure that the
sampler is connected to a power
source and is turned on.

This option couples the sampler to an external, 3-watt, cellular phone. The
cellular phone is mounted in a NEMA 4X enclosure and is powered through
the sampler by the sampler power supply. Enabling Modem Power also
provides power to the Cellular Communication via a connector cable.

The cellular phone is set to activate upon an alarm. Additionally, the end user
can use the phone to make cellular voice calls directly from the installation site
as needed.

Site Selection

The quality and availability of cellular service varies considerably from one
geographical location and from day to day. Factors that affect the quality of
cellular service include but are not limited to: weather, time of day, distance to
the nearest cell tower, other cellular traffic, etc.

Installation and Setup

1. Connect the four conductor cable between the four pin connector on the

side of the cellular phone housing and to the connector in the side of the
sampler case labeled MODEM. This cable supplies both the data and the
12 V dc power for the cell modem.

2. Attach the magnetic base cell phone antenna to any flat metal object in
the immediate area. For optimum performance, mount the antenna in a
vertical position.

Note: Mount the antenna as high and as far away from the sampler as possible. RF

power radiated during transmission by the cell phone antenna in close proximity to
the sampler may have adverse affects on data measurements.

3. When necessary, reposition the antenna to obtain optimum signal
strength.

Page 81

8990cm.fm Modem

Section 6

4. Loosen the four screws on the cover of the cell phone enclosure and

6.2.2.2 Reliable Communications

In order to ensure reliable communications between the sampler and the host
computer, it is absolutely essential that the host computer is equipped with a
Cellular Compatible modem. The modem on the host computer must support
the “MNP.10ED” protocol. Computers equipped with modems that do not
support this protocol may be able to connect to the sampler but will not be
able to maintain reliable connections.

6.2.2.3 Cellular Modem Scheduling

With Cellular Modem Scheduling enabled, both the modem and cell phone
power will simultaneously be turned off and on at user defined intervals to
conserve battery power. If Cellular Modem Scheduling is disabled the sampler
will assume that a land line is available and that the cell phone is not
connected to the sampler. With Cellular Modem Scheduling disabled (and the
sampler on battery power) the sampler will leave the modem turned off until a
call is received on the land line.

remove the cover, to view the signal strength. The signal strength is
indicated by the number of dashes across the bottom of the cell phone
display. The more dashes the greater the signal.

Note: If the Cellular Modem
Scheduling is disabled and the
sampler is connected to a cell
phone rather than a land line, the
sampler will not be able to answer
any incoming calls.

Note: If Modem Power is disabled,
the Cellular Modem Scheduling
prompt will not appear.

If the sampler is on ac power or the battery voltage is over 14.5 volts, the
power to both the cell phone and modem will constantly be on regardless of
whether Cellular Modem Scheduling is enabled or not.

If the sampler is configured to call a pager for alarms and the alarm condition
is met, the sampler will still call the pager even if modem scheduling is
disabled. In this situation the cell phone and modem will temporally be
powered back up again to allow the sampler to call the pager and transmit the
alarm code. However, as soon as the alarm code is transmitted, the power to
the cell phone and modem will again be turned off.

1. To enable Cellular Modem Scheduling, Modem Power must be enabled.

2. Enable the Cellular Modem Scheduling using the

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT CELLULAR MODEM

SCHEDULING:

ENABLED

CANCEL

CHOICES: ENABLED, DISABLED

3. Press

ACCEPT to continue.

CHANGE CHOICE key.

CHANGE

CHOICE

Page 82
Modem

8990cm.fm

6.2.2.4 Cellular Modem Scheduling Basis

After enabling Cellular Modem Scheduling it will be necessary to choose the
type of scheduling; Hourly, Daily or Weekly. If Hourly is chosen the modem
and cell phone are powered up once every hour on the hour for a user defined
duration. If Daily is chosen the modem and cell phone are powered up once a
day, every day, at a user defined time and duration. If Weekly is chosen the
cell phone and modem are powered up only once a week, every week, on a
user defined day, time, and duration.

Section 6

1. To set the Cellular Modem Scheduling Basis press

the correct choice appears in the center of the display. Press

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT CELLULAR MODEM

SCHEDULING BASIS:

DAILY

CANCEL

CHOICES: HOURLY, DAILY, WEEKLY

CHANGE CHOICE until

ACCEPT.

CHANGE

CHOICE

2. Set up the actual time and duration when the modem will be enabled.

3. For Hourly, schedule the duration that the modem will be turned on.

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT CELLULAR SCHEDULING

DURATION: 5 min.

CLEAR

CANCEL

ENTER: 1 - 59

ENTRY

4. If Daily is selected enter the Cellular Scheduling Start Time and Duration.

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT CELLULAR SCHEDULING

START TIME:

1:00 (hrs:min) CLEAR

CANCEL

ENTER: 000:01 - 024:00 (hrs:min)

ENTRY

5. If Weekly is selected, enter the Cellular Modem Schedule Day, Start time,

and Duration.

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT CELLULAR MODEM

SCHEDULE DAY:

FLOW CLEAR

CANCEL

CHOICES: MON, TUE, WED, THU, FRI, SAT, SUN

ENTRY

Page 83

8990cm.fm Modem

Section 6

6.2.2.5 Cellular Modem Triggering

When Cellular Modem Triggering is enabled both the cell phone and modem
remains on for a user specified duration after calling a pager or remote
computer when an alarm condition is met. It is useful when calling back to a
site via modem, after receiving an alarm, or viewing the current status.

11:00 AM 21 - APR - 01 MODEM SETUP

If Cellular Modem Triggering is disabled the sampler is still able to call a pager
or remote computer when an alarm condition is met. However, both the
modem and cell phone will immediately turn off after the call is completed.

Cellular Modem Triggered Duration

After enabling Cellular Modem Triggering, enter a value for Cellular Modem
Triggered Duration. This is the amount of time that the modem remains on
after it dials a pager or remote computer when an alarm condition has been
met. The value is in minutes and can be anywhere between 1 to 120 minutes.

ACCEPT CELLULAR MODEM

TRIGGERING:

ENABLED CLEAR

CANCEL

CHOICES: ENABLED, DISABLED

ENTRY

6.2.2.6 Pager Option

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT CELLULAR MODEM

TRIGGERING DURATION:

30 min. CLEAR

CANCEL

ENTER 1 - 120

Note: This display will not appear unless Cellular Modem Triggering is enabled.

ENTRY

The sampler can be set to call up to three individual pagers or a remote
computer when an alarm condition has been met. The pager setup is an
extension of the Modem Setup menus. To have the sampler call a pager, the
Pager Option must be enabled.

1. Enable the Pager Option, using the

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT

PAGER OPTION:

ENABLED

CANCEL

CHOICES: ENABLED, DISABLED

CHANGE CHOICE key. Press ACCEPT.

CHANGE

CHOICE

Page 84
Modem

8990cm.fm

Section 6

2. Enter the phone number of the paging service. Press ACCEPT.

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT PAGER SERVICE

PHONE NUMBER:

555-5555 CLEAR

CANCEL

(USE NUMERIC KEYPAD)

ENTRY

6.2.2.7 Reporting Devices

3. Enter the number of pagers to call when an alarm occurs. Press

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT

NUMBER OF PAGERS:

3CLEAR

CANCEL

ENTER 1 - 3

ACCEPT.

ENTRY

4. Enter the phone numbers of the individual pagers to send the message to.

This is usually the phone number that is given to the pager when it is
purchased. Press

11:00 AM 21 - APR - 01 MODEM SETUP

ACCEPT PAGER #1

CANCEL

ACCEPT.

CHANGE

CHOICE

PHONE NUMBER:

555-5555

CHOICES: ENABLED, DISABLED

The reporting order of the communication devices can be set to MODEM ONLY,

PAGER ONLY, PAGER THEN MODEM, and MODEM THEN PAGER

.

1. Press

11:00 AM 21 - APR - 01 MODEM SETUP

CHANGE CHOICE until the desired reporting method is displayed

then press

ACCEPT REPORTING ORDER:

CANCEL

ACCEPT.

PAGER THAN MODEM

CHOICES: MODEM AND / OR PAGER

CHANGE

CHOICE

When the sampler calls the pager service, it will transmit a Pager Alarm Code
number (Table 15) which corresponds to a specific
alarm condition.

Page 85

8990cm.fm Modem

Section 6

Table 15 Pager Alarm Codes

Alarm Code Equipment Reason Alarm Code Equipment Reason

Low Main Battery 1 — Battery pack is less than 11.5 V High CH5 28 — —

Memory Battery 2 — Internal memory battery is low High CH6 29 — —

Low Slate Memory 3 — Less than 10% slate memory left High CH7 30 — —

High

Slate Memory Full 4 — Slate memory is used up

Modem Failure 5 — Modem chip/modem board failure

Missed Sample 6 — No liquid detected when sampling High D.O. 33 — —

Purge Failure 7 —

Jammed Distributor 8 —

Bottle is Full 9 — Full bottle option indicator is on

U-Sonic Echo Loss 10 — No return signal detected Low Level 37 — —

Xducer Ringing 11 —

U-Sonic failure 12 — Ultrasonic board detects an error

RS485 Timed Out 13 — Comm. problems with RS485

Unable to Cool 14 AWRS only

Unable to heat 15 AWRS only

Low Bubbler Pres. 16

Clogged Bubbler 17

High Level 18 — — Low CH5 45 — —

High Flow 19 — — Low CH6 46 — —

High Flow Rate of
Chg.

High pH/ORP 21 — —

High Process
Temperature

High Rainfall 23 — — Low D.O. 50 — —

High CH1 24 — —

High CH2 25 — —

High CH3 26 — —

High CH4 27 — —

20 — — Low CH7 47 — —

22 — — Low Velocity 49 — —

(not

applicable)

(not

applicable)

Water present at sensors after
purge

Sensors indicate arm is not
moving

The return signal is detected too
soon

Too high temperature in a
compartment

Too cold a temperature in
compartment

Possible leak in bubble tank Low CH3 43 — —

Bubbler tube is plugged Low CH4 44 — —

Reference
Te m p.

High
Velo city

High D.O.
Te m p.

High
Conductivity

High Cond.
Te m p.

Low Flow 38 — —

Low
pH/ORP

Low
Process
Te m p.

Low CH1 41 — —

Low CH2 42 — —

Low
Reference
Te m p.

Low D.O.
Te m p.

Low
Conductivity

Low Cond.
Te m p.

31 — —

32 — —

34 — —

35 — —

36 — —

39 — —

40 — —

48 — —

51 — —

52 — —

53 — —

Page 86
Modem

8990cm.fm

6.3 4–20 mA Option

6.3.1 4–20 mA Connection

Pin Signal Description Wire Color

A Output 1 + (pos) Yellow

B Output 1 - (neg) Black

C Output 2 + (pos) Red

D Output 2 - (neg) Green

Section 6

The 4–20 mA option provides a current loop for controlling external devices
such as a chart recorder or PC. Either one or both of the 4–20 mA outputs can
be factory installed and are isolated from each other.

The interface has a 3-ft cable with a connector on one end, and a 10-ft cable
with two open wire leads on the other. Insert the connector into the sampler
receptacle labeled “Auxiliary”, located on the left side of the control housing.
On the 10-ft cable, the wire with clear insulation is positive (+) and the wire
with black insulation is negative (-).

Table 16 4–20 mA Connections (J18)

6.3.2 4–20 mA Programming

Note: When the 4–20 mA outputs
are disabled and not completely
turned off, they will continue to
output a steady 4 mA.

Rating:

• Isolation Voltage:

Between sampler and either 4–20 mA output: 2500 V ac
Between the two 4–20 mA outputs: 1500 V ac

• Maximum Resistive Load: 600 ohm

• Output Voltage: 24 V dc - no load

Cable Required

4–20 mA Interface Cable (Cat. No. 2924), 25 ft long, 4-pin connector on one
end, tinned wire leads on the other end.

1. From the Main Menu, select OPTIONS > ADVANCED OPTIONS > 4–20 mA

OUTPUTS > SELECT

.

2. Enable the 4–20 mA outputs by pressing CHANGE CHOICE while in the
4–20 mA output menu.

3. When the display shows the outputs as enabled, press

4. Choose either OUTPUT A or OUTPUT B. Use the

highlight the choice, then press

SELECT.

ACCEPT.

UP and DOWN keys to

11:00 AM 21 - APR - 01 4–20 mA OUTPUTS

SELECT

RETURN

8990cm.fm 4–20 mA Option

OUTPUT A

OUTPUT B

Page 87

Section 6

5. Select an analog Input Channel (e.g., channel 1, 2, 3, or, flow, etc.) to

assign to that output. Press
channel names. When the desired channel is displayed, press

11:00 AM 21 - APR - 01 4–20 mA OUTPUTS

ACCEPT

INPUT CHANNEL:

CANCEL

SELECT APPROPRIATE UNITS

CHANGE CHOICE to cycle through the

ACCEPT.

CHANGE

CHOICE

FLOW

6. Assign a channel value to the 4 mA current value. This value is typically 0,

however any value can be set. Enter the value of the input needed to
generate 4 mA of current at the output.

11:00 AM 21 - APR - 01 4–20 mA OUTPUTS

ACCEPT

4 mA INPUT VALUE

CLEAR
ENTRY

SELECT APPROPRIATE UNITS

0.00 mgd CANCEL

6.3.3 4–20 mA Calibration

7. Assign an input value to the 20 mA current level.

8. Repeat this process to configure the other 4–20 mA output.

After wiring the 4–20 mA connection perform a 4–20 mA output calibration.
The 4–20 mA output calibration requires a digital multimeter or access to the
4–20 mA current loop wiring. Two 4–20 mA outputs are available and are
designated Output A and Output B. Both outputs are calibrated the same way
and are isolated from each other.

Calibration may be performed while the 4–20 mA device is in the current loop,
as shown in Figure 24 or disconnected from the current loop as shown in

Figure 25. In either case, the multimeter must be set to a 20 milliamp dc range

or greater.

1. From the Main Menu, select

CALIBRATION > 4–20 mA OUTPUTS.

OPTIONS > ADVANCED OPTIONS >

2. Connect a multimeter to the 4–20 mA current outputs per Figure 24 and

Figure 25.

3. Make sure that the 4–20 mA output is enabled. If it is not enabled, press

CHANGE CHOICE so that the display shows Enabled and press ACCEPT.

Page 88
4–20 mA Option

4. Select the output (A or B) to calibrate.

5. Press any key to set the selected output to 4.00 mA dc.

6. Measure the current on the selected output using the multimeter and

enter the measured value using the numeric keypad. Press

ACCEPT.

8990cm.fm

7. Press any key to set the output to 20.00 mA dc.

8. Measure the current on the selected output using the multimeter and

enter the measured value using the numeric keypad. Press
complete the calibration.

By entering the measured current values, the microprocessor will
electronically adjust the outputs to compensate for the difference between the
measured values and the expected values.

Figure 24 Calibration with the Meter in the Loop

Section 6

ACCEPT to

Chart

Recorder

Multimeter

900 MAX

Current Loop

Figure 25 Calibration with the 4–20 mA Device Disconnected from the Loop

Multimeter

900 MAX

6.4 Alarm Relays

Note: Current to the relay contacts
must be limited to 5 amps. A means
to remove power from the relays
locally in case of an emergency or
for servicing the product must be
provided by the user. This can be
accomplished with an external
switch and a 5-amp fuse or with a
switched 5-amp circuit breaker.

8990cm.fm Alarm Relays

Four alarm relay outputs are available as a factory installed option. The relays
are mounted in an external NEMA 4X enclosure for installation to a wall or
panel. Alarm contacts are rated for 10 amps at 240 V ac (resistive load).

The alarm wiring can be sized according to the load being used. The relay
connector will accept wire sizes from 18–12 AWG with a rating of 300 V, 80 °C
minimum. Do not use wire smaller than 18 AWG.

For relay pin assignments refer to Table 17 and Figure 26.

Page 89

Section 6

6.4.1 Alarm Relays Connection

Pin Signal Description Wire Color

A+12 V dcRed

B Relay #1 Yellow

C Relay #2 Black

D Relay #3 Red

E Relay #4 Green

Figure 26 Relay Pin Connections

Table 17 Relay Connector (J17)

Page 90
Alarm Relays

Table 18 Relays

Connector Relay

J2 1

J3 2

J4 3

J5 4

Relay Junction Box

Required relay box is an alarm relay box assembly with a 10-ft long cable with
a 6-pin connector on one end and a relay box on the other end (Figure 27).

1. Choose Normally Closed (NC) or Normally Open (NO) connections.

2. Connect one wire to the common (COM) and the other to the connector

with the preferred signal.

8990cm.fm

Figure 27 Single Relay Wiring Inside the Relay Junction Box

6.4.2 Alarm Relays Programming

Program alarms activate based on certain conditions (low battery, low
memory, etc.). When an alarm is tripped, an action is initiated (report via
modem, dial a pager, or set a relay). There are two types of alarms: Trouble
Alarms and Set Point Alarms.

6.4.2.1 Trouble Alarms

Trouble Alarms initiate an action when a trouble condition occurs. For
example, a relay may close when the memory is full. Refer to Troubleshooting

and Error Messages on page 127 for more information on trouble alarms.

Section 6

1. From the Main Menu, select

2. Select one of the trouble conditions.

3. Select an action to occur when the alarm is activated. The table below

lists each Trouble Condition. Refer to Appendix C on page 127 for causes
and solutions.

Trouble Conditions:

• Low Main Battery • Memory Battery

• Low Slate Memory • Slate Memory Full

• Modem Failure • Missed Sample

• Purge Failure • Jammed Distributor

• RS485 Timed Out

Alarm Actions:

• Set Relay #1 • Set Relay #2

• Set Relay #3 • Set Relay #4

• Report Via Modem

SETUP > ADVANCED OPTIONS > ALARMS.

6.4.2.2 Set Point Alarms

Set Point Alarms look for trip points to be reached (either high or low or both)
before initiating an action. For example an initiated action may be the closing
of a relay when the water level exceeds 60 cm (24 in.) or drops below 10 cm
(4 in.) Set Point Alarms activate when a user-definable high and/or low set
point is reached.

Page 91

8990cm.fm Alarm Relays

Section 6

1. Enable one of the alarm conditions.

2. Select an action to occur when the alarm is activated.

3. Set either a High trip point or a Low trip point.

4. After entering the trip point enter the deadband value. The deadband is

the area between the alarm “turn on” and “turn off.”

Note: Log rainfall to use an alarm on a rainfall condition; likewise, log flow in order to

implement an alarm on a flow rate of change.

Set Point Alarm Conditions:

• Level • Cabinet Temperature (refrigerated samplers)

• Flow • Analog Channels 1–3

• Flow Rate of Change • Analog Ch. 4 or D.O.

• pH • Analog Ch. 5 or D.O. Temp.

• ORP • Analog Ch. 6 or Conductivity

• Process Temperature • Analog Ch. 7 or Conductivity Temp.

• Rainfall

Note: Rainfall and Flow Rate of Change alarms are HIGH set point conditions; they

take no deadband and they are time dependant.

Deadband

After entering the trip point, enter a deadband value. The deadband is the
area between alarm “turn-on” and “turn-off”.

The purpose of setting the deadband is to eliminate alarm chatter which may
occur if the “turn-on” and “turn-off” values are too close together. Small
fluctuations occurring when the reading is at or near the trip point can rapidly
toggle an alarm relay on and off.

In the pH example (Figure 28) the deadband is set to 0.10 pH. When the pH
reached 6.9 (lower dashed line), the alarm tripped, but the alarm did not turn
off until the pH came back up to 7.00. This difference is the deadband setting
which should be set according to the characteristics of the item
being measured.

Page 92
Alarm Relays

8990cm.fm

Figure 28 Deadband Concept

7.60

7.40

Section 6

7.20

pH

7.00

6.80

6.60

6.40

6.5 Analog Inputs

6.5.1 Analog Inputs Connection

Note: 4–20 mA inputs must be
isolated. Maximum load per unit is
200 ohms.

Analog voltage as well as analog current input signals are accommodated in a
single connector.

To connect the analog voltage signal (-4.0 to +4.0 V dc):

1. Tie ground wire to Pin B (ground).

2. Tie analog voltage wire to the appropriate voltage input pin

Alarm Off

Alarm On

(Pin C, E, or G).

Deadband

Low Alarm Setpoint= 6.9 pH

For example, to connect an analog voltage input to analog input channel 1, tie
the ground wire to pin B and your positive wire to pin C.

To connect an analog current signal (4–20 mA dc)

1. Tie ground wire to Pin B (ground).

2. Connect analog current wire to both voltage and current input pins for the

appropriate channel (Pin C and D, or E and F, or G and H).

Table 19Analog Input Pin Assignments

Pin Signal Description Wire Color

A +12 V dc White

B Signal Ground Blue

C Voltage Input 1 (-4.0 V dc to +4.0 V dc) Yellow

D Current Input 1 (4–20 mA dc) Black

E Voltage Input 2 (-4.0 V dc to +4.0 V dc) Red

F Current Input 2 (4–20 mA dc) Green

G Voltage Input 3 (-4.0 V dc to +4.0 V dc) Gray

H Current Input 3 (4–20 mA dc) Brown

J not used Violet

K not use Orange

Page 93

8990cm.fm Analog Inputs

Section 6

There are a total of three analog input channels available on the sampler.
These inputs accept 4–20 mA dc or -4.0 to +4.0 V dc analog signals. They
can be logged and graphed and can also be used to trigger alarms, cause
setpoint samples, and control 4–20 mA outputs.

6.5.2 Analog Inputs Programming

Analog input channels can accept a signal from an external device. This
signal may range from -4.0 V dc (min) to +4.0 V dc (max) or from 4 to 20 mA
dc depending on the input selected. In some cases, input signals from certain
devices may also fall somewhere within those ranges. For that reason, each
analog input channel must be mapped to the minimum and maximum signal
limits of the external device.

To map an external device to an analog input channel:

Note: If logging is enabled on any
channel, then that channel will have
an arrow in front of the channel
name to signify the channel
is logged.

1. From the Main Menu, select

OPTIONS>ADVANCED OPTIONS>DATALOG.

2. Highlight Select Inputs using the UP and DOWN keys and press SELECT.

3. Highlight the analog channel to log using the UP and DOWN keys, then

press

SELECT.

4. Press

5. Enter a Logging Interval using the numeric keypad. Press

CHANGE CHOICE to cycle between Logged and Not Logged, then

press

ACCEPT.

ACCEPT to

continue.

6. Select Unit of measurement (ppm, ppb, afd, cfs, cfm, cfd, cms, cmm, cmh,
cmd, gps, gpm, gph, lps, lpm, lph, or mgd).

7. Enter Low Point.

8. Enter High Point.

9. Select another channel to configure, or press

step. Press

MAIN MENU to return to the Main Menu display.

RETURN to back up one

Page 94
Analog Inputs

8990cm.fm

MAINTENANCE

DANGER

Some of the following manual sections contain information in the form of warnings, cautions and notes
that require special attention. Read and follow these instructions carefully to avoid personal injury and
damage to the instrument. Only personnel qualified to do so, should conduct the installation/maintenance
tasks described in this portion of the manual.

DANGER

Certains des chapitres suivants de ce mode d’emploi contiennent des informations sous la forme
d’avertissements, messages de prudence et notes qui demandent une attention particulière. Lire et suivre
ces instructions attentivement pour éviter les risques de blessures des personnes et de détérioration de
l’appareil. Les tâches d’installation et d’entretien décrites dans cette partie du mode d’emploi doivent être
seulement effectuées par le personnel qualifié pour le faire.

PELIGRO

Algunos de los capítulos del manual que presentamos contienen información muy importante en forma de
alertas, notas y precauciones a tomar. Lea y siga cuidadosamente estas instrucciones a fin de evitar
accidentes personales y daños al instrumento. Las tareas de instalación y mantenimiento descritas en la
presente sección deberán ser efectuadas únicamente por personas debidamente cualificadas.

GEFAHR

Einige der folgenden Abschnitte dieses Handbuchs enthalten Informationen in Form von Warnungen,
Vorsichtsmaßnahmen oder Anmerkungen, die besonders beachtet werden müssen. Lesen und befolgen
Sie diese Instruktionen aufmerksam, um Verletzungen von Personen oder Schäden am Gerät zu
vermeiden. In diesem Abschnitt beschriebene Installations- und Wartungsaufgaben dürfen nur von
qualifiziertem Personal durchgeführt werden.

PERICOLO

Alcune parti di questo manuale contengono informazioni sotto forma d’avvertimenti, di precauzioni e di
osservazioni le quali richiedono una particolare attenzione. La preghiamo di leggere attentivamente e di
rispettare quelle istruzioni per evitare ogni ferita corporale e danneggiamento della macchina. Solo gli
operatori qualificati per l’uso di questa macchina sono autorizzati ad effettuare le operazioni di
manutenzione descritte in questa parte del manuale.

Page 95

8990m_stop.fm MAINTENANCE

Visit http: //www.hach.com

Section 7 Maintenance

DANGER
Always disconnect power to the
sampler before performing any
maintenance or service.

DANGER
Débranchez toujours l'alimentation de l'analyseur d'echantillonneur avant de
procéder à un entretien ou une réparation.

7.1 Cleaning the Sampler

7.1.1 Cleaning the Sampler Cabinet

Clean the interior and exterior of the sampler cabinet with a damp sponge and
mild detergent. Do not use abrasive cleaners.

7.1.2 Cleaning the Sample Bottles

Clean the bottles using a brush and water with a mild detergent, followed by a
fresh water rinse and a distilled water rinse. Glass bottles may also be
autoclaved.

7.1.3 Cleaning the Intake Tubing and Pump Tubing

Clean the tubing by pumping water with mild detergent or other cleaning
solution through the tubing, using the peristaltic pump in Manual Pump Mode.
Press

MANUAL MODE.

7.1.4 No Lubrication Required

The sampler does not require routine lubrication. Do not lubricate the pump
tube with petroleum jelly, silicone grease, oil, or any other lubricant, as this will
substantially reduce the life of the pump tube and roller assembly.

7.2 Pump Tubing Maintenance

DANGER
Always disconnect power to the
sampler before removing the
pump cover.

7.2.1 Tubing Life Estimates

DANGER
Débranchez toujours l'alimentation de l'analyseur d'echantillonneur avant de
déposer le couvercle de la pompe.

Replacement pump tubing is available from the manufacturer in 15' bulk
length (Cat. No. 4600-15), and 50' bulk length (Cat. No. 4600-50). Use of
tubing other than that supplied by the manufacturer may cause excessive
wear on mechanical parts and/or poor pump performance.

Pump tubing life depends on several factors:

• Distance from sample source. Locate the sampler as close to the sample
source as possible.

• Vertical lift. Minimize the vertical lift (ideally, 15 feet or less).

• Intake Rinses. Minimize the number of intake rinses prior to

sample collection.

• Pump roller assembly condition. Remove (clean) the silicone residue in
the interior of the pump housing and on the rollers before installing a
new tube.

• Constituents in the sample liquid. Grit and other abrasive solids
cause greater wear on the tubing as they are squeezed through the
pump rollers.

Page 97

8990mnt.fm Maintenance

Section 7

Note: To extend the life of the
tubing, rotate the pump tube 90
degrees in the pump housing after
approximately
been realized (once the tube life has
been determined through use).

2

/3 of the life has

Figure 29 Pump Tube Loading

To Intake Tubing Connector

Experience at a particular site will be your best indicator of tubing life. Visually
inspect the tubing and rollers on a regular basis after initial installation to get a
feel for what maintenance your site will require. Be sure to replace the pump
tubing before it splits to prolong the life of the sampler and keep the work area
free of contamination from the sample liquid.

The proper length of silicone tubing must be used in the pump body. An
improper length can reduce the life of the tubing and pump rollers. Refer to

Figure 29 for the correct length.

11 5/8 in.

(Tubing in Pump)

5 3/4 in. to Sample Fitting

7.2.2 Replacing Pump Tubing

1. To replace the pump tube, remove the four screws on the pump cover.

2. Remove the front cover of the pump housing.

3. Remove the existing tubing. Locate the black dot on the new tubing. The

end of the tube that extends farthest beyond the black dot attaches to the
stainless steel tubing connector.

4. Install the pump tube in the pump housing until the black dots are visible
just outside the pump body.

5. After inserting the new pump tube, reinstall the front cover and secure it
with the four screws until finger tight.

7.3 Upgrades, Repairs, General Maintenance

Only a qualified technician should service the sampler. For example, steps
that require knowledge of CMOS electrostatic discharge precautions and
advanced electronics training and should only be performed by a qualified
technician. If you need assistance in performing any of the following service
steps, contact the manufacturer.

Page 98
Upgrades, Repairs, General Maintenance

8990mnt.fm