Hach 910, 930, 920 Instrument Manual

Catalog Number 4975

Sigma Flow Meter Models

910, 920, and 930

INSTRUMENT MANUAL

05/03 7ed

Visit http: //www.hach.com

Catalog Number 4975

Sigma Flow Meter Models

910, 920, and 930

INSTRUMENT MANUAL

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

eac 05/03 7ed

Visit http: //www.hach.com

Table of Contents

Safety Precautions .................................................................................................................................................... 5

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

OPERATION ......................................................................................................................................................... 13

Section 1 Getting Started................................................................................................................................. 15

1.1 Items Required for Installing and Using the Flow Meter ................................................................................... 15

1.2 Optional Accessories for Use with the Flow Meter............................................................................................ 15

1.3 Planning for Success: Considerations for Installing Your Flow Meter ............................................................... 15

1.3.1 Choosing the Proper Site ........................................................................................................................ 15

1.3.2 Dealing with Difficult Sites ....................................................................................................................... 16

1.3.3 Using the Proper Batteries ...................................................................................................................... 16

1.3.4 Mounting the Flow Meter with the Proper Orientation ............................................................................. 16

1.3.5 Preventing Damage to the Flow Meter in a Harsh Environment .............................................................. 16

1.4 Choosing the Appropriate Meter and Sensor Combination .............................................................................. 16

1.4.1 Types of Sensors ..................................................................................................................................... 17

Section 2 Software and Communications ................................................................................................... 19

2.1 Required Software ............................................................................................................................................ 19

2.2 Programming and Analysis Options .................................................................................................................. 19

2.3 RS232 Serial Port (All Models) ......................................................................................................................... 19

2.4 Modem Communications (Models 920 and 930 Only) ...................................................................................... 21

2.5 Sampler Receptacle (Models 920 and 930 Only) ............................................................................................. 21

2.5.1 Sampler Receptacle Pin Descriptions ..................................................................................................... 21

2.5.2 Logging Sample Information on Models 920 and 930 from a Hach Sampler .......................................... 22

INSTALLATION AND MAINTENANCE............................................................................................................ 23

Section 3 Channel Installation Options........................................................................................................ 25

Section 4 Meter Installation............................................................................................................................. 31

4.1 Battery Information............................................................................................................................................ 31

4.1.1 Installing Batteries ................................................................................................................................... 31

4.1.2 Replacing Batteries in Models 910 and 920 ............................................................................................ 31

4.1.3 Replacing Batteries in Model 930............................................................................................................ 31

4.1.4 Battery-Life Estimates ............................................................................................................................. 32

4.2 Mounting the Flow Meter................................................................................................................................... 33

4.3 Connecting Sensors to the Flow Meter............................................................................................................. 34

4.3.1 Ultrasonic Level Sensor........................................................................................................................... 34

4.3.2 Level/Velocity Sensor .............................................................................................................................. 34

4.3.3 Rain Gauge ............................................................................................................................................. 35

Section 5 Maintenance ..................................................................................................................................... 37

5.1 Sensor Calibration............................................................................................................................................. 37

5.1.1 Velocity Sensor Calibration...................................................................................................................... 37

5.1.2 Submerged Sensor Calibration ............................................................................................................... 37

Page 3

GettingStartedTOC.fm Table of Contents

Table of Contents

5.2 Desiccant Maintenance..................................................................................................................................... 37

5.2.1 Reusing Desiccant................................................................................................................................... 37

5.2.2 Replacing the Sensor Desiccant ............................................................................................................. 37

5.2.3 Replacing the Battery and Electronics Compartment Desiccant ............................................................. 38

5.3 Maintaining the O-Ring Gasket on the End Cap ............................................................................................... 38

5.4 Cleaning the Flow Meter ................................................................................................................................... 38

5.5 Storing the Flow Meter ...................................................................................................................................... 38

5.6 Maintenance in the Electronics Compartment .................................................................................................. 39

5.6.1 Fuses....................................................................................................................................................... 39

5.6.2 Memory Batteries .................................................................................................................................... 39

Section 6 Exploded View Drawings............................................................................................................... 41

GENERAL INFORMATION ................................................................................................................................45

Replacement Parts and Accessories ...................................................................................................................... 47

Contact Information for U.S.A. and Outside Europe ............................................................................................... 49

Contact Information for Europe............................................................................................................................... 50

Warranty ................................................................................................................................................................. 51

Page 4
Table of Contents

GettingStartedTOC.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 5

Safety.fm Safety Precautions

Safety Precautions

Hazardous Locations

The 910/920/930 Flow Meters are not approved for use in hazardous
locations as defined in the National Electrical Code.

DANGER
Although some Hach products are designed and certified for installation in
hazardous locations as defined by the National Electrical Code, many Hach
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

The following information is provided to guide users of 950 Flow Meters on the
dangers and risks associated with entry into confined spaces.

DANGER
Additional training in Pre-Entry Testing, Ventilation, Entry Procedures,
Evacuation/Rescue Procedures and Safety Work Practices is necessary to
ensure against the loss of life in confined spaces.

On April 15, 1993, OSHA's final ruling on CFR 1910.146, Permit Required
Confined Spaces, became law. This 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.

2

S).

FCC Requirements

Page 6
Safety Precautions

1. The Federal Communications Commission (FCC) has established Rules

which permit this device to be directly connected to the telephone

Safety.fm

Safety Precautions

network. Standardized jacks are used for these connections. This
equipment should not be used on party lines or coin lines.

2. If this device is malfunctioning, it may also be causing harm to the
telephone network; this device should be disconnected until the source of
the problem can be determined and until repair has been made. If this is
not done, the telephone company may temporarily disconnect service.

3. The telephone company may make changes in its technical operations
and procedures; if such changes affect the compatibility or use of this
device, the telephone company is required to give adequate notice of the
changes.

4. If the telephone company requests information on what equipment is
connected to their lines, inform them of:

a. The telephone number that this unit is connected to,

b. The ringer equivalence number [1.4B]

c. The USOC jack required [RJ11C], and

d. The FCC Registration Number

Items (b) and (d) are indicated on the label. The ringer equivalence number
(REN) is used to determine how many devices can be connected to your
telephone line. In most areas, the sum of the RENs of all devices on any one
line should not exceed five. If too many devices are attached, they may not
ring properly.

Service Requirements

In the event of equipment malfunction, all repairs should be performed by
Hach Company or an authorized agent. It is the responsibility of users
requiring service to report the need for service to Hach Company. or to one of
our authorized agents. Service can be facilitated throughout our office:

Hach Company
5600 Lindbergh Drive, P.O. Box 389
Loveland, CO 80539
Telephone: [phone]

Equipment Attachment Limitations

Notice: The Canadian Industry Canada label identifies certified equipment.

This certification means that the equipment meets certain
telecommunications network protective, operational and safety requirements.
The Department does not guarantee the equipment will operate to the user's
satisfaction.

Before installing this equipment, users should ensure that it is permissible to
be connected to the facilities of the local telecommunications company. The
equipment must also be installed using an acceptable method of connection.
In some cases, the company's inside wiring associated with a single line
individual service may be extended by means of a certified connector
assembly (telephone extension cord). The customer should be aware that
compliance with the above conditions may not prevent degradation of service
in some situations.

Repairs to certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs or alterations

Page 7

Safety.fm Safety Precautions

Safety Precautions

made by the user to this equipment, or equipment malfunctions, may give the
telecommunications company cause to request the user to disconnect the
equipment.

Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone lines and internal metallic water
pipe system, if present, are connected together. This precaution may be
particularly important in rural areas.

CAUTION

Users should not attempt to make such connections themselves, but should
contact the appropriate electric inspection authority, or electrician, as
appropriate.

The Load Number (LN) assigned to each terminal device denotes the
percentage of the total load to be connected to a telephone loop which is used
by the device, to prevent overloading. The termination on a loop may consist
of any combination of devices subject only to the requirement that the total of
the Load Numbers of all the devices does not exceed 100.

Page 8
Safety Precautions

Safety.fm

Specifications are subject to change without notice.

Model 910

Dimensions 11.4 cm dia. x 44.8 cm L (4.5" dia. x 17.625" L)

Weight 3.54 kg (7.8 lbs.) with batteries

Enclosure Material PVC

Enclosure Rating NEMA 6P (IP67)

Operating Temperature Range -18 to 60 °C (0 to 140 °F)

Storage Temperature Range -40 to 60 °C (-40 to 140 °F)

Power Source One Energizer EN-529, Alkaline, 6 V dc battery

Specifications

Battery Life

User Interface PC

Monitoring Intervals 1, 2, 3, 5, 6, 10, 12, 15, 20, 30, 60 minutes

Program Memory Non-volatile, programmable flash, can be updated via RS232 port

Time-Based Accuracy ±1 second per day

Units of Measurement

Data Storage

Communications Serial connection to IBM compatible computer with Hach analysis software

Velocity Measurement Accuracy

60 days typical, with a 15-minute recording interval, one level and one velocity, one
data download per week, at 10 °C (50 °F) (also affected by site conditions)

Level: in., m, cm, ft.

Flow: gps, gpm, gph, lps, lpm, lph, mgd, afd, cfs, cfm, cfh, cfd, m

Totalized Flow: gal., ft.³, acre-ft., L, m³

Capacity: 90 days of one level reading and one velocity reading at 15-minute

recording intervals

Data Types: Level and velocity

Storage Mode: Wrap or slate

RAM Memory: 128K

Method: Doppler ultrasonic

Transducer Type: Twin 1 MHz piezoelectric crystals

Typical minimum depth for velocity: 2 cm (0.8 in.)

Range: -1.52 to 6.10 m/s (-5 to 20 fps)

Zero Stability: 0.015 m/ss (<0.05 fp)

Accuracy: ±2% of reading

Operating Temperature: -18 to 60 °C (0 to 140 °F)

3

s, m3m, m3h, m3d

Page 9

Specs.fm Specifications

Specifications

Model 920

Dimensions 16.8 cm dia. x 44.7 cm L (6.625" dia. x 17.625" L)

Weight 7.5 kg (16.5 lbs.) with batteries

Enclosure Material PVC

Enclosure Rating NEMA 6P (IP67)

Operating Temperature Range -18 to 60 °C (0 to 140 °F)

Storage Temperature Range -40 to 60 °C (-40 to 140 °F)

Power Source Two Energizer EN-529, Alkaline, 6 V dc batteries

Battery Life

User Interface PC

Monitoring Intervals 1, 2, 3, 5, 6, 10, 12, 15, 20, 30, 60 minutes

Program Memory Non-volatile, programmable flash, can be updated via RS232 port

Time-Based Accuracy ±1 second per day

Units of Measurement

Data Storage

Communications Serial connection to IBM compatible computer with Hach analysis software

Modem

Local Terminal RS232 at 19.2k baud

Velocity Measurement Accuracy

90 days typical, with a 15-minute recording interval, one level and one velocity, one
data download per week, at 10 °C (50 °F) (also affected by site conditions)

Level: in., m, cm, ft.

Flow: gps, gpm, gph, lps, lpm, lph, mgd, afd, cfs, cfm, cfh, cfd, m

Totalized Flow: gal., ft.³, acre-ft., L, m³

Capacity: 240 days of two level readings and two velocity readings at a 15-minute

recording intervals

Data Types: Level, velocity, and rainfall

Storage Mode: Wrap or slate

RAM Memory: 128K

14400, V.32 bis,V.42, MNP2-4 error correction. V.42 bis, MNP5 data compression.
MNP10EC Cellular Protocol

Method: Doppler ultrasonic

Transducer Type: Twin 1 MHz piezoelectric crystals

Typical minimum depth for velocity: 2 cm (0.8 in.)

Range: -1.52 to 6.10 m/s (-5 to 20 fps)

Zero Stability: 0.015 m/ss (<0.05 fp)

Accuracy: ±2% of reading

Operating Temperature: -18 to 60 °C (0 to 140 °F)

3

s, m3m, m3h, m3d

Page 10
Specifications

Specs.fm

Model 930

Dimensions 21.9 x 60 cm (8.625" dia. x 23.625" L)

Weight 16.2 kg (35.7 lbs.) with batteries

Enclosure Material PVC

Enclosure Rating NEMA 6P (IP67)

Operating Temperature Range -18 to 60 °C (0 to 140 °F)

Storage Temperature Range -40 to 60 °C (-40 to 140 °F)

Power Source Six Energizer EN-529, Alkaline, 6 V dc batteries

Specifications

Battery Life

User Interface PC

Monitoring Intervals 1, 2, 3, 5, 6, 10, 12, 15, 20, 30, 60 minutes

Program Memory Non-volatile, programmable flash, can be updated via RS232 port

Time-Based Accuracy ±1 second per day

Units of Measurement

Data Storage

Output Conditions Set point on level, velocity, rainfall, flow, or flow rate of change

Sampler Output 6 to 12 V dc pulse, 100 mA max. at 500 ms duration

Communications Serial connection to PC computer with Hach analysis software

Modem

365 days typical, with a 15-minute recording interval, one level and one velocity, one
data download per week, at 10 °C (50 °F) (also affected by site conditions)

Level: in., m, cm, ft.

Flow: gps, gpm, gph, lps, lpm, lph, mgd, afd, cfs, cfm, cfh, cfd, m

Totalized Flow: gal., ft.³, acre-ft., L, m³

Capacity: 175 days of three level readings, three velocity readings, and rainfall

measurments at a 15-minute recording intervals

Data Types: Level, velocity, and rainfall

Storage Mode: Wrap or slate

RAM Memory: 512K

14400, V.32 bis,V.42, MNP2-4 error correction. V.42 bis, MNP5 data compression.
MNP10EC Cellular Protocol

3

s, m3m, m3h, m3d

Local Terminal RS232 at 19.2k baud

Method: Doppler ultrasonic

Transducer Type: Twin 1 MHz piezoelectric crystals

Typical minimum depth for velocity: 2 cm (0.8 in.)

Velocity Measurement Accuracy

Specs.fm Specifications

Range: -1.52 to 6.10 m/s (-5 to 20 fps)

Zero Stability: 0.015 m/ss (<0.05 fp)

Accuracy: ±2% of reading

Operating Temperature: -18 to 60 °C (0 to 140 °F)

Page 11

Visit http: //www.hach.com

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 13

OpStop.fm OPERATION

Visit http: //www.hach.com

Section 1 Getting Started

1.1 Items Required for Installing and Using the Flow Meter

Batteries

Use only Energizer EN-529, Alkaline, 6 V dc batteries (Cat. No. 3667).

Battery Compartment Desiccant

Use a desiccant cartridge to avoid moisture damage to the batteries and
electronics. See Desiccant Maintenance on page 37 for more information.

Level and Velocity Sensors

Select the level or velocity sensors that best suit your application. For more
information, see Choosing the Appropriate Meter and Sensor Combination on

page 16.

Mounting Apparatus

Select the appropriate Logger and Sensor mounting apparatus from

Replacement Parts and Accessories on page 47.

Programming and Data Retrieval Software

These flow meters require the use of InSight
integrated sewer system management application. InSight is recommended
for small- to medium-sized flow studies. For broader applications, Vision
supports automated data collection with an unlimited number of sensors. See

Software and Communications on page 19 for more information.

®

or Vision®, a high-end,

1.2 Optional Accessories for Use with the Flow Meter

Rain Gauge

Connect your flow meter to the Hach tipping bucket rain gauge to record
rainfall. See Rain Gauge on page 35 for more information.

Wastewater Sampler

Connect an optional Hach wastewater sampler to the flow meter. Models 920
and 930 can set the pace for an external sampler in proportion to flow. In
storm water applications, these models can trigger the sampler in response to
water level or rainfall.

1.3 Planning for Success: Considerations for Installing Your Flow Meter

1.3.1 Choosing the Proper Site

The accuracy of flow measurements greatly depends on the suitability of the
monitoring site. Select sites that have normalized flow and minimal
turbulence. Turbulence can make it difficult to detect an average velocity in the
flow stream. Obstructions, vertical drops, pipe bends, and elbows can create
turbulence and affect the accuracy of your measurements. Ta b le 1 contains
suggestions for preventing turbulence.

Page 15

GettingStarted.fm Getting Started

Section 1

Table 1 Suggestions for Preventing Turbulence

Site Condition Suggested Remedy

Outfalls Attach the sensor at least ten times the maximum expected level upstream of the outfall.

Vertical drops in the
channel floor

Elbows, sharp turns, and
“Y” connections

1.3.2 Dealing with Difficult Sites

1.3.3 Using the Proper Batteries

Attach the sensor at least ten times the maximum expected level upstream of the vertical drop.

Attach the sensor at least ten times the maximum expected level downstream of the vertical drop.

Locate the sensor at least ten times the maximum expected level upstream of the impediment.

Locate the sensor at least ten times the maximum expected level downstream of the impediment.

Some sites may be difficult to monitor due to poor site conditions. The
direction and the speed of the particles in the flow stream contribute to the
signal received by the velocity sensor. If turbulence near the measurement
point is excessive, it may be difficult for the sensor to determine the average
velocity of the stream. Hach loggers provide several unique features to help
deal with these problem sites. See Compensating for Velocity Direction in your
sensor manual.

Use only Energizer EN-529, Alkaline, 6 V dc batteries. These batteries are
required to achieve the rated performance of the flow meter. Other batteries
will produce unacceptable results. See Battery Information on page 31 for
more information.

1.3.4 Mounting the Flow Meter with the Proper Orientation

You must mount the flow meter so that the connectors face down. The

end of the meter that contains the batteries should face up. If the connectors
face up, they may corrode and allow water to seep into the instrument.

1.3.5 Preventing Damage to the Flow Meter in a Harsh Environment

The connectors on your flow meter have protective caps. Cover the
connectors with the protective caps when not in use to prevent corrosion.

1.4 Choosing the Appropriate Meter and Sensor Combination

Use Tab l e 2 to determine which sensors to use.

Table 2 Flow Meter and Sensor Configuration Options

Flow Meter Model Level and Velocity Sensor Configuration Options

910 Meter plus one Submerged Depth/Velocity Sensor or one Velocity Only Sensor

Meter plus two Submerged Depth/Velocity Sensors

920

930 Meter plus up to three Submerged Depth/Velocity Sensors and up to two Ultrasonic 75 kHz Sensors

or
Meter plus one Submerged Depth/Velocity Sensor and one Ultrasonic 75 kHz Sensor

Page 16
Choosing the Appropriate Meter and Sensor Combination

GettingStarted.fm

1.4.1 Types of Sensors

Section 1

Submerged Depth/Velocity Sensors

Submerged Depth/Velocity sensors can measure level and velocity
simultaneously. A submerged pressure transducer measures level. Velocity is
measured with sound waves, using the Doppler principle.

Wafer Velocity Sensor

The Wafer Velocity Sensor (Cat. No. 88005 or 88006) is an extremely low­profile velocity sensor. It does not measure level. The streamlined shape of
the wafer probe allows velocity measurement in very low-flow conditions.
When used in conjunction with a level sensor (such as the In-Pipe Ultrasonic
Level Sensor), you can calculate flow.

In-Pipe Ultrasonic Sensor

Use the In-Pipe Ultrasonic Level Sensor (Cat. No. 3702-01 or 3702-02) in
pipes where level measurement to the top of the pipe is desired. This sensor
has no effective deadband and will read the level until liquid reaches the
bottom of the sensor housing. The entire deadband is contained horizontally
within the sensor body.

Ultrasonic Sensor (Downlook)

Downlook ultrasonic sensors are available with different beam angles,
beam spread, and deadbands. Use the 75 KHz sensor with the 920 or 930
Flow Meter.

Page 17

GettingStarted.fm Choosing the Appropriate Meter and Sensor Combination

Visit http: //www.hach.com

Section 2 Software and Communications

2.1 Required Software

You can program or retrieve data from your flow meter via modem, DTU II, or
direct connection to the RS232 serial port using a PC and one of the following
software packages:

• InSight
small- to medium-sized flow monitoring jobs.

• Vision
high-end, automated data collection and automated batch report
processing, using an unlimited number of meters. Vision is a Microsoft
Windows

®

Data Analysis Software is a Microsoft Windows® program for

®

Integrated Sewer System Management Software provides

®

program.

2.2 Programming and Analysis Options

• Built-in flow equations

• Pager activation upon alarm condition

• 2-way modem and serial communications

• Storage of 116,000 data points in battery-backed RAM Memory

• Storm water sampling trigger

• Rainfall measurement

• Flow proportional sampler output

• High, low, rate of change and trouble alarms

For details on programming your flow meter, refer to your software manual.

2.3 RS232 Serial Port (All Models)

The high speed RS232 serial port communicates with a PC or Data Transfer
Unit (DTU) at speeds from 1200 to 19,200 baud as shown in Figure 1.

The optional extension cable (Cat. No. 3358) includes a built-in ladder hook
and is designed to connect to a cable (Cat. No. 1727) near the surface for
easy reach in manholes. See Figure 2.

Page 19

SoftwareCommunications.fm Software and Communications

Section 2

Figure 1 Communications with the Flow Meter, DTU, and PC

1

2

3

1. DTU to Meter Cable (Cat. No. 1726) 2. DTU to PC Cable (Cat. No. 3513) 3. Meter to PC Cable (Cat. No. 1727)

Figure 2 Extension Cable with Ladder Hook

1

2

1. Cable, Flow Meter to PC (Cat. No. 1727) 2. Extension Cable with Ladder Hook (Cat. No. 3358

Page 20
RS232 Serial Port (All Models)

SoftwareCommunications.fm

Figure 3 Serial Port Pins

Section 2

Table 1Serial Port Pin Descriptions

Pin Letter Description Wire Color

A B+ (used to power DTU) White

B Ground Blue

CDSRYellow

D RCD Black

EDTRRed

FTXDGreen

B

C

A

F

E

D

2.4 Modem Communications (Models 920 and 930 Only)

CAUTION
Use care when making modem
connections as high voltage may
be present on the phone wires!

Figure 4 Modem Receptacle Pins

Models 920 and 930 can be configured with a 14,400 baud, cellular capable
internal telephone modem (Cat. No. 4872).

These advanced, very low power modems let you communicate with Hach
loggers over long distances using public telephone lines or a cellular phone.

The Model 920 and 930 modems communicate at speeds from 300 to 14,400
baud. Connect the red and green wires from the logger modem connector to
the red and green wires provided by the telephone company.

A

B

Pin Letter Designation Color Description

A Tip Green Ground

B Ring Red Signal

Table 2Modem Receptacle Pin Description

2.5 Sampler Receptacle (Models 920 and 930 Only)

2.5.1 Sampler Receptacle Pin Descriptions

The optional “sampler” port lets you connect Model 920 or 930 to a Hach
wastewater sampler. This option provides several features:

• Flow proportional sampling

• Stormwater trigger, based on level and/or rate of rainfall. Useful for the

USEPA NPDES permitting program.

• Sample history logging

Page 21

SoftwareCommunications.fm Modem Communications (Models 920 and 930 Only)

Section 2

Table 3Sampler Receptacle Pin Description

Pin Letter

A White Not used.

B

Ground

C

Flow Pulse

Output

D

Sampler

Start

E

Event Input

F

Bottle

Number

Input

Wire

Color

Blue Provides the ground line that is used in conjunction with the other signals on this connector.

Ye l l o w

Black

Red

Green

Description

Used in conjunction with Pin B (ground) to tell a sampler that a pre-determined amount of flow has
accumulated.

Rating: +8 V dc. Output current is 100 mA dc (max.) with a duration of 500 ms.

Used to “wake up” a wastewater sampler when a level and/or rainfall set-point condition is met so
that it can begin sampling. Used in conjunction with Pin B (ground), this line is normally allowed to
float and is switched to ground (by transistor) once the set-point conditions are met.

Rating: +24 V dc (max.)

This signal is received from a Hach wastewater sampler. It confirms that a sample has been
collected. The time and date of each water sample appears on the data printout when downloaded
using a Data Transfer Unit or Hach PC software. Rating: +12 V dc (max.) minimum 3 sec. pulse.

This signal is received from a Hach wastewater sampler. It is used in conjunction with the “Event
Input” signal described above. It tells the flow meter which bottle was used and when a sample was
taken. This information will appear in the data printout (see “Sample Times and Dates”) when
downloaded using a Data Transfer Unit or Hach Support Software.

Bottle Number signal description

If the Program Complete Output (pin F of the aux. connector) is disabled on the sampler, then it is
used to transmit the bottle number to the connected device.

Time A = 200 msec
Time B = 100 msec (50 ms HI 50 ms LO)

Note: If a sample attempt fails, the first pulse width 'B' is 150 msec HI and 50 msec LO.

Note: If Sample Distribution is programmed for multiple bottles per sample mode, only the first

bottle number of the set is transmitted via pin-F.

Cable Required

Multi-Purpose Half Cable Assembly (Cat. No. 941): 3 m (10') long, 6-pin connector on one end,
tinned wire leads on the other end. For use with non-Hach samplers.

or
Multi-Purpose Full Cable Assembly (Cat. No. 940): 3 m (10') long, 6-pin connector on both ends.
Custom sizes: 7.6 m lengths (25 ft.) and custom sizes are also available.

2.5.2 Logging Sample Information on Models 920 and 930 from a Hach Sampler

To log sample information in Models 920 or 930 from Hach samplers:

1. Connect the appropriate cable (Cat. No. 940 or 540) to the “Sampler”
receptacle on the flow meter and the “Auxiliary” receptacle on the
sampler.

2. Program the sampler for Special Output/Sample Output. See the
appropriate sampler manual for details.

Page 22
Sampler Receptacle (Models 920 and 930 Only)

SoftwareCommunications.fm

INSTALLATION AND 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 23

InstMaintStop.fm INSTALLATION AND MAINTENANCE

Visit http: //www.hach.com

Section 3 Channel Installation Options

Figures 5 through 11 show how to install Models 910, 920, or 930 for various
applications.

Figure 5 shows Model 910 installed in a manhole with a single level/velocity

sensor stored in the small-diameter pipe.

Figure 5 Small-Diameter Pipes Down to Street or Building Collectors

910

Page 25

ChannelOptions.fm Channel Installation Options

Section 3

Figure 6 shows Model 930 with three level/velocity sensors that will determine

an average reading.

Models 910/920/930 do not require profiling to establish average velocity,
allowing setup in a dry channel (Figure 7). Rapid signal processing and
temperature compensation accurately record the change from dry to wet
conditions.

Figure 6 Installation in a Large Diameter Pipe, Trunk, Interceptor, or Tunnel

930

Figure 7 Installation Setup in a Dry Channel

Page 26
Channel Installation Options

920

ChannelOptions.fm

Figure 8 shows a storm vault accepting flow from three locations. A single

Model 930 monitors level, velocity, and flow in all three pipes and sends data
via modem to a central location.

Figure 8 Installation for Multiple Source Monitoring at a Single Site

930

Section 3

Page 27

ChannelOptions.fm Channel Installation Options

Section 3

When a Combined Sewer Overflow (CSO) is conducive to accurate flow
measurement, a Model 920 can measure depth and velocity in the primary
channel and measure discharge in the overflow channel with ±5% accuracy.
See Figure 9.

Figure 9 Installation for Combined Sewer Overflow (CSO) Applications

920

Page 28
Channel Installation Options

ChannelOptions.fm

Section 3

In some instances, the overflow in some CSO applications may be too
turbulent for accurate measurement. Figure 10 shows Model 920 with two
depth/velocity probes that will measure flow upstream and downstream of the
outfall to determine the volume and duration of the overflow.

Figure 10 Installation for Combined Sewer Overflow (CSO) Applications with Turbulence in the
Overflow

920

Page 29

ChannelOptions.fm Channel Installation Options

Section 3

920

920

920

Custody transfer or interagency billing demand redundant measurement for
chain of custody. In Figure 11, one Model 920 provides ultrasonic
measurement of flow in a Parshall flume while also measuring flow upstream
using the Continuity Equation (Q=AV). This ensures no loss of data in a
submerged flow condition.

Figure 11 Installation for Custody Transfer or a Billing Arrangement

920

Page 30
Channel Installation Options

ChannelOptions.fm

Section 4 Meter Installation

4.1 Battery Information

Use only Energizer®* EN-529, alkaline, 6 V dc batteries. These batteries are
required to achieve the rated performance of the flow meter. Other batteries
will produce unacceptable results. Non-alkaline or non-industrial grade
batteries will damage the battery compartment and may void the warranty.

Energizer EN-529 batteries are readily available and provide sufficient power
to operate the flow meter for extended periods. Use this model battery to
obtain the rated operating duration and to safeguard the logger circuitry.
Replacement batteries are available from Hach Company (Cat. No. 3667).

4.1.1 Installing Batteries

CAUTION
Use only alkaline batteries in this
product. Other types of batteries
can result in safety hazards.

Note: Do not soil or damage the two

rubber O-rings on the end cap while
removing or replacing the end cap.
The O-rings provide a watertight
seal for the battery compartment.
Replace them if they are lost or
damaged.

Opening the Model 910 and 920 Battery Compartments

1. Grasp the logger by the handle opposite of the interface connectors and

twist that end counter-clockwise to open.

2. Unscrew the end cap.

Opening the Model 930 Battery Compartment

1. Turn the winged fastener counter-clockwise to loosen it (it does not come

all the way off).

2. Pull the end cap of the 930 straight up and off of the logger.

4.1.2 Replacing Batteries in Models 910 and 920

Model 910 uses one 6 V dc alkaline battery. Model 920 uses two 6 V dc
alkaline batteries. Install the fresh battery(s) into the battery compartment,
terminal-end first. It does not matter which way the battery is rotated when it is
inserted. The battery holder will accept the batteries regardless of polarity.

Use two fresh batteries each time in Model 920. Do not mix fresh batteries
with used ones.

4.1.3 Replacing Batteries in Model 930

Model 930 uses six 6 V dc alkaline batteries in a removable battery pack. The
battery pack is secured inside the battery compartment with two captive,
winged fasteners. See Figure 12.

Use a complete set of fresh batteries each time. Do not mix fresh batteries
with used ones.

Note: A full battery pack is heavy.
Use care when removing it.

* Energizer is a registered trademark of Eveready Battery Company, Inc.

MeterInstallation.fm Meter Installation

1. Loosen the two captive fasteners.

2. Carefully lift the pack straight up to remove it.

3. Unplug the battery pack power cable from the instrument.

4. Remove the battery retainer plate by loosening the two fasteners located

on the side of the pack.

Page 31

Section 4

5. Remove the old batteries. Install the fresh batteries into the battery pack

compartment, terminal-end first. It does not matter which way the
battery is rotated when it is inserted. The battery holder will accept the
batteries regardless of polarity.

6. Replace the retainer plate and tighten the fasteners by hand until they are
secure. This applies the proper compression to the battery terminals. Use
care not to over-tighten the fasteners.

7. Reattach the power cable to the flow meter in the bottom of the battery
compartment. The cable is keyed and will only fit in the proper orientation.

8. Insert the battery pack into the battery compartment and tighten the two
captive fasteners.

9. Replace the instrument cap.

Figure 12 Battery Pack Compartment

1

Eveready Energizer

EN 529 Alkaline

2

1. Loosen to remove batteries (after removing the battey pack).

2. Loosen to remove the battery pack from the meter.

3. Remove power cable.

Eveready Energizer

EN 529 Alkaline

3

4.1.4 Battery-Life Estimates

Page 32
Battery Information

When using Energizer EN-529, alkaline, 6 V dc batteries, battery life is
based on:

• Number of sensors installed

• Recording intervals (longer intervals increase battery life)

• Number of channels logged in memory

MeterInstallation.fm

Section 4

• Temperature (colder temperatures decrease battery life)

• Site hydraulics (second order effect caused by excessive turbulence)

The chart below provides typical expected battery life for each logger model:

Table 4Estimated Battery Life

Model Battery Life in Days

910 60

920 90

930 365

You can access a real-time battery voltage check via InSight
Select the 'Current Status' display. The chart below shows the estimated dc
voltage readings when approximately 30 days of battery life remain.

Table 5Battery Voltage when a 30-Day Battery Capacity Remains

Model Battery Voltage (dc)

910 3.8

920 9.0

930 9.0

4.2 Mounting the Flow Meter

Important Note: Before using the flow meter, insert the port/vent plug into the

top hole of the unit with a

DANGER
Not for use in hazardous
locations where combustible
gases may be present.

When mounting the flow meter, remember to:

• Mount the meter so that the connectors face down. The end of the
meter that contains the batteries should face up. If the connectors face up,
they may corrode and allow water to seep into the instrument. See Figure

13.

• When not in use, cover the connectors with their protective caps to
prevent corrosion.

7

/16” wrench.

®

software.

Use the appropriate manhole support bracket/spanner bar. See Replacement

Parts and Accessories on page 47.

Page 33

MeterInstallation.fm Mounting the Flow Meter

Section 4

Figure 13 Hanging the Meter Properly

1. Point connectors down.

4.3 Connecting Sensors to the Flow Meter

1

4.3.1 Ultrasonic Level Sensor

One 75 kHz Ultrasonic Sensor can be attached to each 'U-SONIC' receptacle.
Loggers that use more than one ultrasonic sensor have ultrasonic receptacles
labeled 'U-SONIC A', 'U-SONIC B', etc. Each sensor may be assigned in the
software as the primary sensor or as one or more secondary sensors. The
primary sensor is used for all flow calculations in InSight software. Vision
software allows the use of any sensor in flow calculation.

Figure 14 and Tab l e 6 describe the pins on all of the sensor receptacles.

Figure 14 Ultrasonic Sensor Receptacle Pins

Table 6 Ultrasonic Sensor Receptacle Pin Descriptions

D

A C

B

Pin Letter Description Wire Color

A Temperature(+) Red

B Temperature (-) Black

C Ultrasonic (+) Shield

D Ultrasonic (-) Clear

4.3.2 Level/Velocity Sensor

Velocity receptacles A, B, and C accept Submerged Area/Velocity sensors,
Velocity-Only probes, or any combination of the two.

®

Page 34
Connecting Sensors to the Flow Meter

Figure 15 and Tab l e 7 describe the pins on all of the velocity receptacles.

MeterInstallation.fm

Figure 15 Velocity Receptacle Pins

A

B

H

JK

C

DE

G

F

4.3.3 Rain Gauge

An optional Hach tipping bucket rain gauge may be connected to the 'RAIN
GA.' connector of Model 920 and 930 flow meters. Each tip of the bucket in
the rain gauge transmits a dry contact closure to the flow meter. Each dry
contact closure represents 0.01" (0.0254 cm) of rainfall. A constant dc voltage
is supplied on Pin C of the rain gauge receptacle. The dry contact closure in
the rain gauge returns a voltage pulse into Pin A with each tip.

Section 4

Table 7 Velocity Receptacle Pin Description

Pin Letter Description Wire Color

A +12 V dc Red

B Ground Green

C Velocity receive (ground) B/W shield

D Velocity receive (+) B/W center

E Velocity transmit (ground) Black shield

F Velocity transmit (+) Black center

G Depth (-) Black

H Depth (+) White

J

K

Not used NA

Figure 16 and Tab l e 8 describe the pins on all of the rain gauge receptacles.

Figure 16 Rain Gauge Receptacle Pins

A

F

E

B

C

D

Pin Letter*

A Tip Signal / 0.01" (2.54 cm) of rainfall

C Source Voltage

* Pins B, D, E and F are not used in the rain gauge connector.

Table 8 Rain Gauge Receptacle Pin Description

Description

Page 35

MeterInstallation.fm Connecting Sensors to the Flow Meter

Visit http: //www.hach.com

Section 5 Maintenance

5.1 Sensor Calibration

5.1.1 Velocity Sensor Calibration

The velocity sensor does not require calibration. The transmit frequency is
fixed by a highly accurate quartz crystal-controlled frequency generator.

5.1.2 Submerged Sensor Calibration

Calibrating the submerged sensor synchronizes the meter electronics with the
unique characteristics of each individual probe. In addition, the calibration
compensates for a drift in the output of the sensor that may occur as the
materials in the sensor age. To ensure optimum accuracy, the manufacturer
recommends calibrating the submerged 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 and 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 level reading of the flow meter and the independent

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

5.2 Desiccant Maintenance

5.2.1 Reusing Desiccant

The desiccant material is a silica gel indicator. When the gel is saturated with
moisture, the beads turn from blue to pink. To rejuvenate the beads for reuse,
remove them from the assembly. Heat the beads in an oven at 100 to 180 °C
(212 to 350 °F) until the beads turn blue again. Discard and replace the beads
if they do not turn blue after heating.

5.2.2 Replacing the Sensor Desiccant

Note: Before calibrating or installing
the Submerged Sensor it is
absolutely essential that the red
plastic protective cap be removed
from the atmospheric reference port
of the desiccant cartridge.

The air dryer assembly is an integral part of the velocity probe cable. A small
diameter tube is contained within the sensor cable to supply a reference port
from the logger to the transducer in the sensor. The reference air passes
through the in-line desiccant where all moisture is removed.

To remove or replace the sensor desiccant:

1. Remove the fill plug from the assembly.

2. Remove the pink desiccant beads and allow the assembly to air dry.

3. Fill the assembly with fresh (blue) desiccant.

4. Replace the fill plug.

Page 37

Maintenance.fm Maintenance

Section 5

5.2.3 Replacing the Battery and Electronics Compartment Desiccant

A small desiccant cartridge in the battery compartment prevents moisture
damage to the batteries and power circuitry. The electronics compartment
desiccant cartridges should be changed whenever you service the electronics
(see section 5.6 on page 39) to assure a moisture free environment inside the
enclosure. Tabl e 9contains replacement part numbers.

If the normally blue desiccant beads turn pink, replace the cartridge or
remove the cartridge end cap and recharge or replace the desiccant material.
See Reusing Desiccant on page 37.

A small clip holds the desiccant cartridge in place. Pull the cartridge straight
out of the clip to remove it.

Table 9Replacement Desiccant

Description Part Number

Model 910 Battery Compartment Desiccant Cartridge 4933

Model 920 Battery Compartment Desiccant Cartridge 4933

Model 930 Battery Compartment Desiccant Cartridge 4936

Electronics Compartment Desiccant
(2 cartridges are required for Model 930)

Bulk Desiccant Refill (1.5 lb.) 3624

4933

5.3 Maintaining the O-Ring Gasket on the End Cap

Two O-ring gaskets are installed in each end cap of the flow meter. They
maintain the water tight seal on the flow meter. Use care when the end caps
are removed—do not soil, cut, or nick the gaskets. Replace them immediately
if any physical damage is apparent. A light coating of O-ring lubricant is
sufficient to maintain a water-tight seal. Table 10lists replacement O-ring
gaskets.

Note: Do not use petroleum jelly to lubricate the O-rings.

Table 10Replacement O-rings

Description Part Number

Model 910 End Cap O-ring 4912

Model 920 End Cap O-ring 4863

Model 930 End Cap O-ring 4807

5.4 Cleaning the Flow Meter

Clean the outside of the logger case with warm water and mild detergent. Do
not use solvents or harsh cleaners to clean the logger. Do not use high
pressure washing equipment to clean the case.

5.5 Storing the Flow Meter

Remove the 6 volt alkaline batteries from the logger when storing for long
periods (more than 3 months). Store the sensors in a dry area. Make sure that
all desiccant materials in the probes are kept fresh (blue) at all times.

Page 38
Maintaining the O-Ring Gasket on the End Cap

Maintenance.fm

5.6 Maintenance in the Electronics Compartment

Important Note: The electronics compartment is only serviceable by a qualified
electronics technician familiar with static sensitive CMOS components. Permanent
damage to electronic circuitry may result from improper handling. Always wear a wrist
grounding strap when handling CMOS electronic components.

To open the electronics compartment, remove the four pins that hold the
electronics compartment end cap in place. The pins are located under a
protective tape on the outside surface of the logger near the end cap. The end
cap pulls straight off after all pins are removed.

5.6.1 Fuses

All internal fuses are self-resetting and require no maintenance. There are no
other user-serviceable components inside the electronics compartment

5.6.2 Memory Batteries

An internal battery pack that contains two, 1.5 V dc alkaline “C” batteries
powers RAM memory, the real time clock, and associated circuitry. The
batteries also prevent the loss of programmed settings and logged data if the
main power fails or is removed.

Section 5

Model 910, 920 and 930 memory batteries are located inside the electronics
compartment. The two cells will provide many years of trouble-free operation.
Use only alkaline replacement batteries.

You can set a low memory battery indicator using InSight
Software. See the software manual for details.

®

or Vision®

Page 39

Maintenance.fm Maintenance in the Electronics Compartment

Visit http: //www.hach.com

Section 6 Exploded View Drawings

Model 910

4902

4912

3667

4907

4913

2 Req’d

4933

4914

4918

3652
Apply to inside surface
of 4901 (battery end)

4901

4912
2 Req’d

8644
4 Req’d

Drawings.fm Exploded View Drawings

4933

Page 41

Section 6

Model 920

4852

4863

2 Req’d

3667

2 Req’d

4933

4857

4862

4933

3652
Apply to inner wall of
4851 case (battery end)

4851

4871

4863

2 Req’d

8644

4 Req’d

4856

Page 42
Exploded View Drawings

Drawings.fm

Model 930

4801

4807

2 Req’d

4805

Section 6

3667
6 Req’d

4936

4804

4870

4802

4847

8644

4 Req’d

4807
2 Req’d

4933
2 Req’d

4803

Page 43

Drawings.fm Exploded View Drawings

Visit http: //www.hach.com

GENERAL INFORMATION

At Hach Company, customer service is an
important part of every product we make.

With that in mind, we have compiled the following
information for your convenience.

Page 45

GenInfo.fm GENERAL INFORMATION

Visit http: //www.hach.com

Replacement Parts and Accessories

Logger Mounting Accessories

Description Model Part Number

Ladder Hanger, for use with 4915 and 4873 Suspension Bracket ....................................... 920/930................. 4874

Manhole Support Bracket/Spanner 45–68 cm (18–28”) (for use with Cat. No. 4920)... 910/920/930................. 9542

Manhole Support Bracket/Spanner, 71–122 cm (28–48”) (for use with Cat. No. 4920) 910/920/930................. 9557

Manhole Support Bracket/Spanner, 107–183 cm (42–72”)

(for use with Cat. No. 4920) .......................................................................................... 910/920/930................. 9556

Suspension Cable ....................................................................................................................... 910................. 4920

Wall/Ladder Mount Suspension Bracket ..................................................................................... 920................. 4915

Wall/Ladder Mount Suspension Bracket ..................................................................................... 930................. 4873

In-Pipe Ultrasonic Sensor Mounting Accessories

Description Model Part Number

Mounting Band Set for 15–42” pipes............................................................................. 910/920/930................. 3766

Includes:

(1) Extension Band ...................................................................................................................................... 1473

(2) Extension Bands .................................................................................................................................... 1525

(3) Extension Bands ..................................................................................................................................... 1759

(1) Extension Band ....................................................................................................................................... 1318

(1) Scissors Jack Assembly ......................................................................................................................... 3719

Mounting Clip (for use with Cat. No. 3766) .......................................................................... 920/930................. 3868

Mounting Clip, permanent (screws to channel wall)............................................................. 920/930................. 3875

Mounting Ring, 6”, with integral in-pipe sensor mounting clip

and velocity sensor mounting holes. .................................................................................... 920/930................. 4021

Mounting Ring, 8”, with integral in-pipe sensor mounting clip

and velocity sensor mounting holes. .................................................................................... 920/930................. 4022

Mounting Ring, 10”, with integral in-pipe sensor mounting clip

and velocity sensor mounting holes. .................................................................................... 920/930................. 4023

Mounting Ring, 12”, with integral in-pipe sensor mounting clip

and velocity sensor mounting holes. .................................................................................... 920/930................. 4024

Submerged Area Velocity Sensor Mounting Accessories

Description Model Part Number

Insertion Tool for street-level installation of mounting rings. ......................................... 910/920/930................. 9574

Mounting Ring for 6" diameter pipe (requires Cat. No. 3263) ....................................... 910/920/930................. 1361

Mounting Ring for 8" diameter pipe (requires Cat. No. 3263) ....................................... 910/920/930................. 1362

Mounting Ring for 10" diameter pipe (requires Cat. No. 3263) ..................................... 910/920/930................. 1363

Mounting Ring for 12" diameter pipe (sensor mounts directly to band) ........................ 910/920/930................. 1364

Mounting Ring for 15" diameter pipe (sensor mounts directly to band) ........................ 910/920/930................. 1365

Mounting Ring for 18" diameter pipe (sensor mounts directly to band) ........................ 910/920/930................. 1366

Mounting Ring for 20–21" diameter pipe (sensor mounts directly to band) .................. 910/920/930................. 1353

Mounting Ring for 24" diameter pipe (sensor mounts directly to band) ........................ 910/920/930................. 1370

Sensor Mounting Clip for use with mounting bands...................................................... 910/920/930................. 3263

Mounting Plate, wall mount sensor ............................................................................... 910/920/930................. 4939

Manhole Support Bracket/Spanner Bar

Description Part Number

“A” Dimension Range

18–24 in........................................................................................................................................................ 9542

28–48 in........................................................................................................................................................ 9557

3.6–6 ft.......................................................................................................................................................... 9556

Page 47

Parts.f m Replacement Parts and Accessories

Replacement Parts and Accessories

Mounting Band Selection Chart

Mounting Band Selection1

A

Pipe Diameter

8" (20.32 cm)0010

10" (25.4 cm)1010

12" (30.48 cm)0110

15" (38.1 cm)0210

18" (45.72 cm)0120

21" (53.34 cm)0220

24" (60.96 cm)0130

27" (68.58 cm)1011

30" (76.2 cm)1111

33" (83.2 cm)1021

36" (91.44 cm)1121

42" (1.06 m)1131

45" (1.14 m)1112

48" (1.21 m)1022

1 In addition to the band segments shown below, a complete mounting band assembly also requires one AV Sensor Mounting
Clip (Cat. No. 3263), and one Scissors Jack Assembly (Cat. No. 3719).

Cat. No. 1473

6.25" (15.85 cm) long,
adds 2" (5.08 cm) to

band diameter

Cat. No. 1525

9.5" (24.13 cm) long,
adds 3" (7.62 cm) to

band diameter

Cat. No. 1759

19" (48.26 cm) long,

adds 6"(15.24 cm) to

band diameter.

Cat. No. 1318

50.25" (1.27 cm) long,
adds 16" (40.64 cm)

to band diameter

Page 48
Replacement Parts and Accessories

Parts.fm

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

Ordering Information for the U.S.A.

By Telephone:

[phone]

By Fax:

[phone]

Ordering information by E-mail:

[e-mail]

Information Required

• Hach account number (if available)

• Your name and phone number

• Purchase order number

• Brief description or model number

By Mail:

Hach Company
P.O. Box 389
Loveland, Colorado 80539-0389
U.S.A

• Billing address

• Shipping address

• Catalog number

• Quantity

Ordering Information for Outside the U.S.A. and Europe

Hach Company maintains a worldwide network of dealers and distributors. To
locate the representative nearest you, send E-mail to [e-mail] or visit
www.hach.com.

Technical Support

Technical and Customer Service Department personnel are eager to answer
questions about our products and their use. In the U.S.A., call
1-800-635-4567. Outside the U.S.A. and Europe, send E-mail to
[e-mail].

Repair Service

Authorization must be obtained from Hach Company before sending any
items for repair. Please contact the Hach Company Service Center serving
your location.

Hach Company
P.O. Box 389
Loveland, Colorado, 80539-0389 U.S.A.

Telephone: [phone] or [phone]

Fax: [phone]

Page 49

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

Contact Information for Europe

For technical support, repair service, and ordering information please refer to the contact information below for your
specific country.

Belgium

Lange Group
Ragheno Business Center 2
Motstraat 54
B-2800 Mechelen
Tel.: ++32/(0)15 42/ 35 00
Fax: ++32/(0)15 41/ 61 20
email: [e-mail]

Germany (TCS & Service)

Dr. Bruno Lange GmbH & CO. KG
Willstätterstr. 11
D-40549 Düsseldorf
Tel.: ++49/(0)211/52 88-0
Fax: ++49/(0)211/52 88-143
email: [e-mail]
www.drlange.com

Spain

NEURTEK. M.A-LANGE GROUP
c/ Araba, 45.
Apdo. 220
E-20800 ZARAUZ
Tel.: ++34 943 894.379
Fax: ++ 34 943 130.241
email: [e-mail]
www.drlange.com

Denmark

Dr. Lange Danmark A/S
Jernhoolmen 34-40
DK-2650 Hvidovre
Tel.: ++45/(0)36 77/ 2911
Fax: ++45/(0)36 77/ 4911
email: [e-mail]
www.drlange.de

Germany (Ordering)

Dr. Bruno Lange GmbH & CO. KG
Königsweg 10
D-14163 Berlin
Tel.: ++49/(0)30/80 98 60
Fax: ++49(0)30/80 98 62 70
www.drlange.de

France

Polymetron/Dr. Lange
Division Lab
33 rue du ballon
F-93165 Noisy le Grand
Tel.: ++33/(0)1/ 48 15 68 70
Fax: ++33/(0)1/ 48 15 68 79
email: [e-mail]
www.drlange.fr

Poland

Dr. Lange Sp. z o.o.
ul. Opolska 143a
PL-52-013 Wroclaw
Tel.: ++48/(0)71/ 3 42 10 -81/-83
Fax: ++48/(0)71/ 3 42 10 79
email: [e-mail]
www.drlange.de

Austria

Dr. Bruno Lange Ges.m.b.H.
Industriestraße 12
A - 3200 Obergrafendorf
Tel.: ++43/(0)2747 - 7412
Fax: ++43/(0)2747 - 4218
email: [e-mail]
www.drlange.de

Italy

Dr. Bruno Lange s.r.I.
via Riccione, 14
IT-20156 Milano
Tel.: ++39/(0)2 39 23 14 1
Fax: ++33/(0)2 39 23 14 39
email: [e-mail]
www.drlange.it

Great Britain

Dr. Lange (UK) Ltd.
Lennox Road
GB-Basingstoke
Hampshire
RG22 4AP
Tel.: ++44/(0)12 56/ 33 34 03
Fax: ++44/(0)12 56/ 33 07 24
email: [e-mail]
www.drlange.co.uk

Sweden

Dr. Lange AB
LAB Products
Box 9008
S-40091 Götebord
Tel.: ++46-31-28 50 50
Fax: ++46-31-28 50 39
email: [e-mail]
www,lange.se

The Netherlands

Dr. Lange Benelux
Postbus 6299
NL-4000 HG Tiel
Tel.: ++31/(0)344/ 63 11 30
Fax: ++31/(0)344/ 63 11 50
email: [e-mail]
www.langegroup.nl

Sweden

Dr. Lange AB
PROCESS Products
Box 410
S-13525 Tyresö
Tel.: ++46-87-98 05 00
Fax: ++46-87-42 17 24
email: [e-mail]
www.lange.se

Switzerland

Dr. Bruno Lange AG
Juchstrasse 1
CH-8604 Hegnau
Tel.: ++41/(0)1/ 9 45 66 10
Fax: ++41/(0)1/ 9 45 66 76
email: [e-mail]
www.drlange.ch

Page 50
Contact Information for Europe

Warranty

Hach Company warrants this product to the original purchaser against any defects that are due
to faulty material or workmanship for a period of one year from date of shipment.

In the event that a defect is discovered during the warranty period, Hach Company agrees that, at
its option, it will repair or replace the defective product or refund the purchase price, excluding
original shipping and handling charges. Any product repaired or replaced under this warranty
will be warranted only for the remainder of the original product warranty period.

This warranty does not apply to consumable products such as chemical reagents; or
consumable components of a product, such as, but not limited to, lamps and tubing.

Contact Hach Company or your distributor to initiate warranty support. Products may not be
returned without authorization from Hach Company.

Limitations

This warranty does not cover:

• Damage caused by acts of God, natural disaster, labor unrest, acts of war (declared or
undeclared), terrorism, civil strife or acts of any governmental jurisdiction

• Damage caused by misuse, neglect, accident or improper application or installation

• Damage caused by any repair or attempted repair not authorized by Hach Company

• Any product not used in accordance with the instructions furnished by Hach Company

• Freight charges to return merchandise to Hach Company

• Freight charges on expedited or express shipment of warranted parts or product

• Travel fees associated with on-site warranty repair

This warranty contains the sole express warranty made by Hach Company in connection with its
products. All implied warranties, including without limitation, the warranties of merchantability
and fitness for a particular purpose, are expressly disclaimed.

Some states within the United States do not allow the disclaimer of implied warranties and if this
is true in your state the above limitation may not apply to you. This warranty gives you specific
rights, and you may also have other rights that vary from state to state.

This warranty constitutes the final, complete, and exclusive statement of warranty terms and no
person is authorized to make any other warranties or representations on behalf of Hach
Company.

Limitation of Remedies

The remedies of repair, replacement or refund of purchase price as stated above are the
exclusive remedies for the breach of this warranty. On the basis of strict liability or under any
other legal theory, in no event shall Hach Company be liable for any incidental or consequential
damages of any kind for breach of warranty or negligence.

Page 51

Warranty