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
Table of Contents
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
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