Teledyne 2150EX User Manual

2150EX Area Velocity

Flow Module

Installation and Operation Guide

Part #69-2003-347 of Assembly #60-2004-347
Copyright © 2004. All rights reserved, Teledyne Isco, Inc.
Revision K, May 1, 2007

Foreword

This instruction manual is designed to help you gain a thorough understanding of the
operation of the equipment. Teledyne Isco recommends that you read this manual
completely before placing the equipment in service.

Although Teledyne Isco designs reliability into all equipment, there is always the possi­bility of a malfunction. This manual may help in diagnosing and repairing the malfunc­tion.

If the problem persists, call or e-mail the Teledyne Isco Technical Service Department
for assistance. Simple difficulties can often be diagnosed over the phone.

If it is necessary to return the equipment to the factory for service, please follow the
shipping instructions provided by the Customer Service Department, including the
use of the Return Authorization Number specified. Be sure to include a note
describing the malfunction. This will aid in the prompt repair and return of the
equipment.

Teledyne Isco welcomes suggestions that would improve the information presented in
this manual or enhance the operation of the equipment itself.

Teledyne Isco is continually improving its products and reserves the right to
change product specifications, replacement parts, schematics, and instruc­tions without notice.

Customer Service

Phone: [phone] (USA, Canada, Mexico)

Fax: [phone]

Email: [e-mail]

Technical Service

Phone: [phone] (Analytical)

Email: [e-mail]

Return equipment to: 4700 Superior Street, Lincoln, NE 68504-1398

Other Correspondence

Mail to: P.O. Box 82531, Lincoln, NE 68501-2531

Email: [e-mail]

Web site: www.isco.com

Contact Information

[phone] (Outside North America)

[phone] (Samplers and Flow Meters)

Revised September 15, 2005

2150EX Area Velocity Flow System

Safety Information

2150EX Area Velocity Flow System

Safety Information

General Warnings Before installing, operating, or maintaining this equipment, you

should read this entire manual. While specific hazards may vary
according to location and application, it is still helpful to read
this safety section (which is specific to the 2150EX) and the
general safety information contained in Appendix E. If you have
any questions regarding the equipment or its installation,
contact Teledyne Isco or one of its representatives for assistance.

This manual has been created in compliance with general
requirements for equipment installed in potentially explosive
atmospheres (refer to Clause 28 of EN 50014:1997).

WARNING

Avoid hazardous practices! If you use this instrument in
any way not specified in this manual, the protection
provided by the instrument may be impaired; this will
increase your risk of injury.

WARNING

Intrinsic safety is dependent on proper installation in
accordance with IEC 60079-14 and IEC 60079-17
International Standards, or ATEX Group II, Category 1G
requirements of the authority that has jurisdiction for the
installation of equipment in hazardous areas at your
specific installation site. Installation should be performed
only by trained and qualified personnel.

Hazard Severity Levels This manual applies Hazard Severity Levels to the safety alerts,

These three levels are described in the sample alerts below.

CAUTION

Cautions identify a potential hazard, which if not avoided, may
result in minor or moderate injury. This category can also warn
you of unsafe practices, or conditions that may cause property
damage.

WARNING

Warnings identify a potentially hazardous condition, which
if not avoided, could result in death or serious injury.

DANGER

DANGER – limited to the most extreme situations
to identify an imminent hazard, which if not
avoided, will result in death or serious injury.

5

2150EX Area Velocity Flow System
Safety Information

Hazard Symbols The equipment and this manual use symbols to warn of hazards.

The symbols are explained below.

Hazard Symbols

Warnings and Cautions

The exclamation point within the triangle is a warning sign alerting you of
important instructions in the instrument’s manual.

The lightning flash and arrowhead within the triangle is a warning sign alert­ing you of “dangerous voltage” inside the product.

Symboles de sécurité

Ce symbole signale l’existence d’instructions importantes relatives au pro­duit dans ce manuel.

Ce symbole signale la présence d’un danger d’électocution.

Warnungen und Vorsichtshinweise

Advertencias y Precauciones

2150EX Safety
Information

Das Ausrufezeichen in Dreieck ist ein Warnzeichen, das Sie darauf
aufmerksam macht, daß wichtige Anleitungen zu diesem Handbuch
gehören.

Der gepfeilte Blitz im Dreieck ist ein Warnzeichen, das Sei vor “gefährlichen
Spannungen” im Inneren des Produkts warnt.

Esta señal le advierte sobre la importancia de las instrucciones del manual
que acompañan a este producto.

Esta señal alerta sobre la presencia de alto voltaje en el interior del pro­ducto.

The intrinsically safe 2150EX is intended for use in potentially
explosive atmospheres, and complies with ATEX Directive
94/9/EC. The 2150EX is Group II, Category 1G equipment for use
in gas hazard zones 0, 1, and 2.

The equipment is not designed with dust ignition protection for
dust hazard zones 20, 21, or 22.

6

2150EX Area Velocity Flow System

Safety Information

2150EX Module Connected to

2191EX Battery Module and AV2150EX Sensor

Designed for safety The purpose of intrinsic safety is to limit the energy available to

Installation should be completed with adherence to local require­ments for ATEX Group II, Category 1G or 2G equipment as
appropriate, and should be done by trained and qualified per­sonnel.

a given circuit or device to a level where electrical discharge
(sparking) cannot ignite the hazardous (flammable or explosive)
atmosphere. With no spark ignition possible, safe operation of
the equipment in areas with hazardous atmospheres is possible.

The durable 2150EX, 2191EX, 2196EX, and 2194EX enclosures
are made with ABS plastic embedded with conductive carbon
fiber, giving the units low surface resistance to minimize electro­static energy.

The lithium thionyl chloride batteries and the lead acid batteries
used in the 2191EX Battery Module operate at a low voltage and
are contained in sealed battery packs.

The 2150EX system has been designed so that it does not cause
physical injury or other harm due to contact. It does not produce
excessive surface temperature or dangerous radiation. When
used properly, it does not present any non-electrical dangers.

7

2150EX Area Velocity Flow System
Safety Information

Labels Read all labels carefully before installing the equipment!

The 2150EX and its components are clearly labeled with color
and/or text so you know what can be located in a safe or haz­ardous area (see figure below). For example, on the label shown
below, light blue is used to indicate the intrinsically safe end and
yellow to indicate the non-protected end of the cable and con­nector.

Example of Safe and Hazardous Area Labeling on RS232EX Cable

AV2150EX Sensor Cable Labels

Some system components have an X marking, as shown in the
example below. The X marking indicates that there are special
conditions that must be met to ensure intrinsic safety. In the case
of the sensor cable, there is a danger of static electricity. The
cable is labeled with a warning telling you that you should not
rub the sensor with a dry cloth, as this might generate static
electricity.

WARNING

ELECTROSTATIC HAZARD

DO NOT RUB

CLEAN WITH DAMP CLOTH ONLY

X-Marking

8

Example of 2150EX Label

2150EX Area Velocity Flow System

Safety Information

Where applicable, the labels contain other information, such as
voltage, serial number identification, etc. For example, the label
shown below indicates the maximum input voltage (U
current (I

), and input power (Pi) that can be applied to the

i

), input

i

2150EX network port without invalidating intrinsic safety. It
also shows the internal capacitance (C
(L

) that must be allowed by any power source.

i

), and internal inductance

i

When you compare the 2150EX label in the figure above with the
2191EX label in the figure below, you can see they provide a
helpful reference so you can make sure your connections are safe.

Example of 2191EX Label

For example, the 2150EX network port cannot have an input
voltage greater than 9.282V. When you look at the label on the
power source (in this case the 2191EX), you can see that the
maximum output voltage is 9.282V. From this you know that you
can safely connect the two, and won’t be providing too much
voltage to the 2150EX unit.

Note

This information is not intended to fully explain entity parame­ters. Other publications should be referenced for more detailed
explanations.

9

2150EX Area Velocity Flow System
Safety Information

Installation Installation of the 2150EX system is described in this manual.

Repair and Maintenance Refer to Section 4 of this manual for instructions regarding

Teledyne Isco, Inc.

Technical Service Dept.
P.O. Box 82531
Lincoln, NE 68501 USA

Phone: [phone]

[phone]

FAX: [phone]

E-mail:
[e-mail]

Typical round-pipe installations are shown in Figures 2-1 and
2-2, and Appendix E provides information on general safety pro­cedures for work in manholes and sewers.

When the equipment is installed in accordance with the instruc­tions in this manual, it will not be subjected to dangerous
mechanical or thermal stresses. It should not be installed where
it may be attacked by existing or foreseeable aggressive sub­stances that could damage the module enclosures. The enclo­sures are made of Acrylonitrile Butadiene Stytene (ABS) plastic.
Substances that may cause damage include organic solvents
(ketones and esters, aromatic and chlorinated hydrocarbons),
alcohols, hydrocarbons, fuels, and UV radiation.

periodic maintenance of the 2150EX and its components.
The internal components of the 2150EX System are not user-ser-

viceable. The case is completely sealed to protect the internal
components. If you think your module requires repair, contact
Teledyne Isco’s Technical Service Department.

Rapidly failing desiccant may indicate a crack.

WARNING

Any cracks in the module case will impair the safety
protection. If this occurs, return the unit to Teledyne Isco
for a replacement.

Components of the AV2150EX Sensor are encapsulated in plastic
resin and are not user-serviceable. If any part of the AV Sensor
fails, it must be replaced.

10

2150EX Area Velocity Flow System

Table of Contents

Section 1 Introduction

1.1 Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1.1 2150EX Area Velocity Flow System Overview . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.1.2 Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.1.3 Velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.1.4 Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.1.5 Total Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.1.6 Data Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.2 Identifying Module Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Section 2 Preparation and Installation

2.1 Unpacking Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Preparing for Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.2 Locating the Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.3 Channels Without a Primary Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.2.4 Channels With a Primary Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.2.5 2150EX and AV Sensor Mounting Considerations . . . . . . . . . . . . . . . . . . . 2-3

2.3 Site Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.4 Portable Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.4.1 Installation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.4.2 Install Battery Module Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.4.3 Inspect the Desiccant – Battery Module . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.4.4 Inspect the Desiccant – 2150EX Module . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.4.5 Assembling the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.4.6 Zone 1 Battery Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2.5 Permanent Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2.5.1 Installation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

2.6 Network Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

2.6.1 EX Network Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

2.6.2 Connecting to a Computer for Interrogation . . . . . . . . . . . . . . . . . . . . . . . 2-23

2.6.3 Connecting to a 2100 Series Network Device . . . . . . . . . . . . . . . . . . . . . . . 2-23

2.7 Connecting the AV2150EX Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

2.7.1 Positioning the AV Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

2.8 Mounting Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

2.8.1 Spring Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

2.8.2 Scissors Mounting Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

2.8.3 Completing the AV Sensor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

2.9 Final Installation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

2.9.1 Program the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

Section 3 Programming

3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Flowlink Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2.1 Site Configuration Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

11

2150EX Area Velocity Flow System
Table of Contents

3.3 Program Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.3.1 Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.3.2 Zero Level Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.3.3 No Velocity Data and Flow Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.3.4 Flow Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.3.5 Silt Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.3.6 Data Storage Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.3.7 Site Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3.3.8 Module Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Section 4 Modbus Protocol

4.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2.1 Establishing Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.2.2 Module Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.3 Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.4 Glossary of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.5 Common Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.6 Register Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Section 5 Maintenance

5.1 Maintenance Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 Maintenance Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.3 2191EX Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.3.1 LTC2191EX Lithium Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.3.2 SLA2191EX Lead-Acid Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.4 Desiccant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5.4.1 Replacing the Desiccant: AV Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5.4.2 Replacing the Desiccant: Battery Module . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5.4.3 Reactivating the Desiccant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5.5 Channel Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5.6 Other Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5.6.1 Hydrophobic Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5.6.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5.6.3 Sensor Cable Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

5.7 How to Obtain Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

5.7.1 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Appendix A Replacement Parts

A.1 Replacement Parts Diagrams and Listings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Appendix B Accessories

B.1 How to Order. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

B.2 General Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

B.3 Maintenance Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

B.4 AV Sensor Mounting Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

12

Appendix C Material Safety Data Sheets

C.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Appendix D General Safety Procedures

D.1 Hazards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

2150EX Area Velocity Flow System

Table of Contents

D.2 Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

D.3 Adverse Atmospheres. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

D.4 Entering Manholes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

D.4.1 Traffic Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

D.4.2 Removing the Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

D.4.3 Other Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

D.4.4 Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

D.4.5 Field Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

D.5 Lethal Atmospheres in Sewers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

List of Figures

1-1 2150EX - Top and Bottom Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-2 2150EX Connected to 2191EX- Top Right View . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-3 Components – AV2150EX Area Velocity Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-4 2191EX and 2196EX Battery Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1-5 2150EX Area Velocity Flow System Communication Connector Pins . . . . . . . . 1-11

2-1 Typical Round-pipe Installation Connected to a

Laptop Computer (Portable Installation, see section 2.4) . . . . . . . . . . . . . . . . . . . 2-5

2-2 Typical Round-pipe Installation Connected to a

2101 Field Wizard (Portable Installation, see section 2.4) . . . . . . . . . . . . . . . . . . 2-6

2-3 Typical Round-pipe Installation Connected to a

2194EX Module and Laptop

(Permanent Installation, see section 2.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2-4 Illustration of Battery Packs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2-5 Label Markings for LTC2191EX and SLA2191EX Battery Packs . . . . . . . . . . . . 2-9

2-6 Assembling a basic portable system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2-7 Flowlink low-voltage warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

2-8 Location of 2196EX charging terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

2-9 Detailed view of charging circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2-10 2196EX battery module and labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

2-11 Amphenol connector pins for 12V adapter cable 69-2004-451 . . . . . . . . . . . . . 2-18

2-12 2194EX labels and cable connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

2-13 Network cable connector and wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

2-14 Network cable conduit fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

2-15 Wiring the socket insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

2-16 EX Network Cable for Connection to an Isolator Cable . . . . . . . . . . . . . . . . . . 2-22

2-17 RS232EX Isolator Cable for Connection to a Computer . . . . . . . . . . . . . . . . . . 2-23

2-18 RS485EX Isolator Cable for Connection to a 2100 Series Network Device . . . 2-24

2-19 Connecting the AV Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

2-20 AV2150EX Sensor Cable Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

2-21 Sensor Installed on a Spring Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

2-22 Scissors Ring adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

3-1 Connection to a Laptop, Using Cables P/N 60-2004-336 and 60-2004-339 . . . . . . 3-1

3-2 Preferred Measurement Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3-3 Zero Level Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

4-1 Configuration Example (Direct Connection Shown) . . . . . . . . . . . . . . . . . . . . . . . 4-3

5-1 Illustration of LTC2191EX Battery Packs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5-2 SLA2191EX Battery Pack Voltage Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5-3 Lead-Acid SLA2191 EX Battery Packs and 8V2191SLA Charger . . . . . . . . . . . . 5-5

5-4 Inserting an SLA2191EX Battery Pack into the Charger . . . . . . . . . . . . . . . . . . . 5-6

5-5 Illustration of Battery Packs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

13

2150EX Area Velocity Flow System
Table of Contents

List of Tables

1-1 2150EX Area Velocity Flow Module - Top and Bottom Views . . . . . . . . . . . . . . . . 1-4

1-2 2150EX Area Velocity Flow Module - Top Right View . . . . . . . . . . . . . . . . . . . . . 1-5

1-3 Components – AV2150EX Area Velocity Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-4 Battery Components - 2191EX and 2196EX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1-5 Technical Specifications – 2150EX and 2191EX Modules

(Zones 0, 1, and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1-6 Technical Specifications - 2196EX Battery Module

(Zones 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1-7 Technical Specifications - 2194EX Interface Module

(Associated Apparatus) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1-8 Specifications – AV2150EX Area Velocity Sensor

(Zones 0, 1, and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1-9 Communication Connector Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

3-1 Flow Conversion Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

4-1 Modbus ASCII Address 1 Register Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4-2 Modbus ASCII Address 2-(N+1) Register Definitions . . . . . . . . . . . . . . . . . . . . . . 4-7

4-3 Measurement Parameters by Model Number* . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

D-1 Hazardous Gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-7

14

2150EX Area Velocity Flow Module

Section 1 Introduction

1.1 Product Description The 2150EX Area Velocity Flow Module is part of Isco’s 2100

Series. The 2100 Series measures parameters of open channel
flow streams.

The intrinsically safe 2150EX is intended for use in potentially
explosive atmospheres, and complies with ATEX Directive
94/9/EC. The 2150EX is Group II, Category 1G or 2G equipment
as appropriate for use in Hazardous Zones 0, 1, and 2.

The purpose of intrinsic safety is to limit the energy available to
a given circuit or device to a level where electrical discharge
(sparking) cannot ignite the hazardous (flammable or explosive)
atmosphere. With no spark ignition possible, safe operation of
the equipment in areas with potentially explosive atmospheres is
possible.

The standard 2100 Series is designed to be modular so that you
can expand the system by stacking modules to meet your data
collection needs. The 2150EX incorporates this modularity,
allowing up to two 2150EX modules to be stacked on one 2191EX
or 2196EX battery module.

The 2150EX is paired with Isco’s Flowlink software. With this
full-featured application software, you can quickly set up the
module, retrieve measurement data, manage the sites, and
analyze the data, and update the module’s own software, all
without entering the hazardous area.

The module’s data storage memory is quite flexible, able to store
the measurements in intervals from 15 seconds to 24 hours. The
module can also be configured for variable rate data storage.
Variable rates allow you to store data at a different interval
when a programmed condition occurs.

The module’s program and collected data are stored in flash
memory for security. Flash memory retains data without the
concern of power failures or aging backup batteries. Its capacity
is more than sufficient for most applications. The data storage
memory can hold approximately 79,000 readings – the equiv­alent of nine months of level and velocity data when stored at
fifteen minute intervals. The flash memory also stores sensor
level adjustment information. A separate flash memory device
inside the module stores the operating firmware.

The rugged 2150EX components are rated NEMA 4X, 6P (IP68).
The permanently sealed enclosures are designed to meet the
environmental demands of many sewer flow monitoring applica­tions. All connections between sensors and communication cables
“lock” in place. Each locking mechanism strongly secures the
components and ensures a watertight seal.

1-1

2150EX Area Velocity Flow Module
Section 1 Introduction

1.1.1 2150EX Area Velocity Flow System Overview

AV Module

The 2150EX measures liquid level and average stream velocity,
and calculates the flow rate and total flow. The liquid level and
velocity measurements are read from an attached Area Velocity
(AV) Sensor that is placed in the flow stream. Flow rate calcula­tions are performed internally using the measured parameters
from the AV Sensor. Additionally, the 2150EX can measure its
input voltage.

The 2150EX is designed to provide durable operation with only a
minimal amount of routine maintenance, all of which may be
performed in the field, while keeping in mind restrictions for
potentially explosive atmospheres. Typically, the 2150EX and its

AV Se n s o r

AV2150EX Sensor will only require that you keep the stream free
from excessive debris, and replace or recharge spent desiccant
and batteries. Sections 1.1.2 through 1.1.6 describe the 2150EX
and sensor in greater detail.

1.1.2 Level The AV Sensor’s internal differential pressure transducer mea-

sures the liquid level. The transducer is a small piezo-resistive
chip that detects the difference of the pressures felt on the inner

reference to
atmosphere

piezo-

resistive

transducer

and outer face.

The stainless steel outer diaphragm is exposed to the flow stream
through the ports under the AV Sensor. The pressure felt on the
outer diaphragm is transferred to the outer face of the trans-

silicone

fluid

ducer through a silicone fluid medium. The outer diaphragm and
fluid isolate the sensitive transducer from direct exposure to the
stream. The inner face of the transducer is exposed, or refer­enced, to the atmosphere through the internal vent tube that

outer

diaphragm

runs the full length of the AV Sensor’s cable.

The difference between the pressures exerted on the transducer
is the hydrostatic pressure. Hydrostatic pressure is proportional
to the level of the stream. The Isco AV2150EX sensor uses state
of the art techniques to ensure accuracy throughout the environ­mental operating range. At the factory each sensor is measured
at scores of pressure and temperature levels to precisely charac­terize the unique transducer. These calibration results are digi­tally stored within the sensor's flash memory. During readings
the sensor's microcontroller applies the known correction factor
to produce highly accurate level readings.

1.1.3 Velocity The AV Sensor measures average velocity by using ultrasonic

sound waves and the Doppler effect. The Doppler effect states
that the frequency of a sound wave (or other wave) passed from

Ultrasonic

sound waves

Particles or
air bubbles

one body to another is relative to both their motions. As the two
approach each other, the frequency increases; as they move
apart, the frequency decreases.

The AV Sensor contains a pair of ultrasonic transducers. One

Flow

transducer transmits the ultrasonic sound wave. As the trans­mitted wave travels through the stream, particles and bubbles
carried by the stream reflect the sound wave back towards the
AV Sensor. The second transducer receives the reflected wave.

1-2

2150EX Area Velocity Flow Module

Section 1 Introduction

Circuits internal to the module compare the frequencies of the
sound waves and extract the difference. An increase or decrease
in the frequency of the reflected wave indicates forward or
reverse flow. The degree of change is proportional to the velocity
of the flow stream.

1.1.4 Flow Rate Using measurements from the AV Sensor, the 2150EX can cal-

culate the flow rate. Many different flow rate conversion methods
are supported:

• Area Velocity

•Data Points

• Manning Formula

• Two-term Polynomial Equations

•Flumes

•Weirs

Often the 2150EX is chosen for applications where a primary
device is not available, nor is it practical to install a primary
device. Therefore, area velocity is usually the conversion method
of choice.

The 2150EX is capable of calculating and storing any two con­version methods simultaneously. This feature is useful when it is
necessary to validate a flow conversion method. For example, the
flow rate at a new site programmed for area velocity conversion
can be directly compared to the flow rate calculated using a
Manning formula.

1.1.5 Total Flow The 2150EX can calculate and report the total flow. You can set

up the system to monitor net, positive, or negative total flow from
either of the calculated flow rates.

1.1.6 Data Storage Through Flowlink, you configure which type of data is logged and

the storage rate. For each measurement, the Data Storage Setup
window lets you turn the primary rate off, or select a rate from 15
seconds to once every 24 hours. If the primary rate is turned off,
the 2150EX will not store the measurement (unless a secondary
rate is selected). However, the 2150EX will still take readings if
that measurement type is necessary for a calculation.

Secondary rates are used to log data at a different rate when a
user-defined condition exists. For example, a secondary rate can
be used to increase the level and velocity data storage rate when
level is greater than or equal to a point of interest. Secondary
rates give you the best resolution of data, but only when it is
needed. Until the condition is met, the module will conserve
power and memory by storing the data at the primary storage
rate. Like the primary rate, you can turn the secondary rate off,
or select a storage rate of 15 seconds to every 24 hours.

Time Resolution The time resolution of each measurement is one second. That is,

readings are taken at the same time as the time stamp, not col­lected and averaged over a period of time before the stamp.

1-3

2150EX Area Velocity Flow Module
Section 1 Introduction

Rollover Memory Whether the measurements are stored at the primary or sec-

ondary rate, they are stored in a rollover type of memory. When
full, the module overwrites the oldest data with the newest
readings.

1.2 Identifying Module Components

Bottom View

6

The various components of the 2150EX are shown in Figures 1-1
through 1-4. Items referenced in the figures are described in
Tables 1-1 through 1-4.

Top View

2

3

1

4

7

5

Figure 1-1 2150EX - Top and Bottom Views

Table 1-1 2150EX Area Velocity Flow Module - Top and Bottom Views

Item No. Fig. 2-1 Name Description

1 Latch Latches the module in place. A latch release is located on the

right side of the module.

2 Communication Connector

(shown uncapped)

3 Connector Cap

(shown in holder)

4 Desiccant Cartridge and

Hydrophobic Filter

5 Communication Indicator Illuminates when module communications are active.

6 Communication Connector

(shown capped)

7 Cap Holder Used to store the Connector Cap.

Upper communication port; used to connect to another mod­ule, or to a PC running Flowlink software.

Insert into unused communication connector to terminate the
network and protect it from moisture damage. When the com­munication connector is in use, the cap must be stowed in its
holder to protect the terminating components inside the cap.

The cartridge holds desiccant that dries the reference air. The
filter prevents moisture from entering the reference line.

Used to connect the module to the 2191EX or 2196EX battery
module, or to another 2150EX module. When the communica­tion connector is in use, the cap must be stowed in its holder to
protect the terminating components inside the cap.

1-4

2150EX Area Velocity Flow Module

Section 1 Introduction

2

5

Figure 1-2 2150EX Connected to 2191EX- Top Right View

Table 1-2 2150EX Area Velocity Flow Module - Top Right View

1

3

4

Item No.
Fig. 2-2

1 Carrying Handle Used to lift and carry the unit.

2 Communication Connector

3 Cap Holder Used to store the connector cap.

4 AV Sensor Receptacle Port used to attach the AV Sensor. Insert the protective cap

5 2191EX Used to store battery packs and provide a source of power for

Name Description

(shown capped)

Upper communication port, used to connect to another module
or to a PC running Flowlink software.

when not in use.

the 2150EX.

1-5

2150EX Area Velocity Flow Module
Section 1 Introduction

1

3

2

4

Figure 1-3 Components – AV2150EX Area Velocity Sensor

Table 1-3 Components – AV2150EX Area Velocity Sensor

Item No.
Fig. 1-3

1 Connector Cap Protects the connector. When the connector is not in use, this cap must be in

2 Connector Attaches to the AV Sensor receptacle on the 2150EX Module.

3 AV Sensor Body The AV Sensor Body is placed in the flow stream to measure level and velocity.

4 Cable 10.0 m (32.8 ft) cable containing the reference air tubing and conductors to

Name Description

place to prevent damage to the connector pins and reference air tubing.

transfer level data, velocity data, and AV Sensor power.

1-6

2191EX2191EX 2196EX

2150EX Area Velocity Flow Module

Section 1 Introduction

3

3

2

1

Figure 1-4 2191EX and 2196EX Battery Components

Table 1-4 Battery Components - 2191EX and 2196EX

Item No.
Fig. 1-4

1 Battery Door

2 Lithium Battery Pack (2)

3 Battery Cavity 2191EX: The battery packs are inserted into the battery cavities.

Name Description

The quarter-turn door seals the battery cavity.
2191EX: Inside each door is a humidity indicator and a bag of
desiccant to prevent internal moisture damage.
2196EX: The right door has one humidity indicator and bag of
desiccant, while the left door houses the charging circuit board for the
batteries.

Use only the lithium or lead-acid battery packs supplied by Teledyne

or

Lead-Acid Battery Pack (2)

Isco. Operation requires two of either battery type.

2196EX: The batteries are integral to the module and not removable.

1

1.3 Technical Specifications

This section lists technical information about the 2150EX Area
Velocity Flow Module and its related components.

• Table 1-5 lists the technical specifications for the
2150EX and 2191EX Modules, and also the battery
packs.

• Table 1-6 lists the technical specifications for the
2196EX Zone 1 battery module.

• Table 1-7 lists the technical specifications for the
2194EX network interface module.

• Table 1-8 lists the technical specifications for the
AV2150EX Area Velocity Sensor.

• Figure 1-5 and Table 1-9 list information about the
2150EX’s communication connector.

1-7

2150EX Area Velocity Flow Module
Section 1 Introduction

Table 1-5 Technical Specifications – 2150EX and 2191EX Modules

(Zones 0, 1, and 2)

Size (H×W×D)

2150EX connected to 2191EX 22.6 × 28.0 × 19.3 cm 8.9 × 11.0 × 7.6 in.

Weight

(without batteries)
(with lithium battery packs)
(with lead-acid battery packs)

Material ABS plastic, stainless steel

Enclosure (self-certified) NEMA 4X, 6P IP 68

Power 7.0 to 9.0 VDC, 100 mA typical at 8 VDC, 1 mA standby

Batteries LTC2191EX lithium or SLA2191EX lead-acid batteries, quantity 2 battery packs

3.00 kg 6.6 lb

4.20 kg 9.2 lb

7.10 kg 15.7 lb

Typical Battery Life (estimated)

(assumes 23°C; actual
performance is affected by
site conditions)

Operating Temperature -40° to 60°C -40° to 140°F

Storage Temperature -40° to 60°C -40° to 140°F

Program Memory Non-volatile, programmable flash; can be updated using PC without opening

Flow Rate Conversions Up to 2 independent level-to-area and/or level-to-flow rate conversions

Level-to-Area Conversions

Channel Shapes Round, U-shaped, rectangular, trapezoidal, elliptical, with silt correction

Data Points Up to 50 level-area points

Level-to-Flow Rate Conversions

Weirs V-notch, rectangular, Cipolletti, Isco Flow Metering Inserts, Thel-Mar

Flumes Parshall, Palmer-Bowlus, Leopold-Lagco, trapezoidal, H, HS, HL

Manning Formula Round, U-shaped, rectangular, trapezoidal

Data Points Up to 50 level-flow rate points

Level Velocity LTC2191EX SLA2191EX

Data Storage Interval Lithium Batteries Rechargeable Lead-Acid Batteries

15 minutes 49 months 157 days

5 minutes 21 months 64 days

2 minutes 8 months 31 days

1 minute 4 months 18 days

(lead-acid battery packs have an operating temperature of -20° to 60°C or -4° to 140°F)

enclosure or entering hazardous area; retains user program after updating

Equation 2-term polynomial

Total Flow Calculations Up to 2 independent, net, positive or negative, based on either flow rate conversion

Data Storage Memory Non-volatile flash; retains stored data during program updates

Capacity 395,000 bytes (up to 79,000 readings, equal to over 270 days of level and velocity

readings at 15 minute intervals, plus total flow and input voltage readings at 24
hour intervals). Bytes per reading is 5.

Data Types Level, velocity, flow rate 1, flow rate 2, total flow 1, total flow 2, input voltage

Storage Mode Rollover with variable rate data storage based on level, velocity, flow rate 1, flow

rate 2, total flow 1, total flow 2, or input voltage

Storage Interval 15 or 30 seconds; 1, 2, 5, 15 or 30 minutes; or 1, 2, 4, 12 or 24 hours

Setup and Data Retrieval Serial connection to IBM PC or compatible computer with Isco Flowlink Software

Version 4.16 or greater

Baud Rate 38,400

1-8

2150EX Area Velocity Flow Module

Section 1 Introduction

Table 1-6 Technical Specifications - 2196EX Battery Module

(Zones 1 and 2)

Size (HxWxD) 14.94 x 23.12 x 19.3 cm 5.88 x 9.13 x 7.6 in.

Weight 5.77 kg 12.71 lb

Enclosure (self-certified) NEMA 4X, 6P IP 68

Operating and Storage Temperature -40 °C to 60 °C -40 °F to 140 °F

Power Output Nominal: 8 VDC

Maximum: 9.28 VDC

Charger Input Nominal: 13.5 to 14.7 volts

Absolute Maximum: 20 volts, 2.0A

NOTE:
The serial tag of the 2196EX Module contains important X marking, indicating special safety conditions that must be
observed. See Important Information Regarding "X" Marking on page 2-17 for more information.

Table 1-7 Technical Specifications - 2194EX Interface Module

(Associated Apparatus)

Size (H×W×D) 7.37 x 28.7 x 19.05 cm 2.9 x 11.3 x 7.5 in.

Weight 9 kg 2 lb

Enclosure (self-certified) NEMA 4X, 6P IP 68

Operating Temperature -20 to 60 °C -4 to 140 °F

Storage Temperature -40 to 60 °C -40 to 140 °F

Power 9 to 26.5 VDC (nominal 12 or 24 VDC)

150 mA typical @ 12 VDC

Output 8.8 VDC, nominal

Number of 2150EX flow modules powered:

with 75m interface cable: 2
with 150m interface cable: 1

Communication Side connector: Isco EX node network compatible explosion protected devices

Top & Bottom connectors: Isco node network / PC compatible

NOTE:
The serial tag of the 2194EX Module contains important X marking, indicating special safety conditions that must
be observed. See Important Information Regarding "X" Marking on page 2-19 for more information.

1-9

2150EX Area Velocity Flow Module
Section 1 Introduction

Table 1-8 Specifications – AV2150EX Area Velocity Sensor

(Zones 0, 1, and 2)

Materials

Sensor Epoxy, chlorinated polyvinyl chloride (CPVC), stainless steel

Cable Polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), stainless steel

Size (H×W×D) 1.9 × 3.3 × 15.2 cm 0.75 × 1.31 × 6.00 in.

Cable Length 10.0 m 32.8 ft.

Cable Diameter 0.9 cm 0.37 in.

Weight (including cable) 1.02 kg 2.24 lbs

Level Measurement

Method Submerged pressure transducer mounted in the flow stream

Transducer Type Differential linear integrated circuit pressure transducer

1

Range

Maximum Allowable Level 10.5 m 34 ft.

Accuracy

Long Term Stability ±0.007 m/yr ±0.023 ft/yr

2

0.010 to 3.05 m 0.033 to 10 ft.

±0.003 m ±0.010 ft

Operating Temperature
Range

Compensated
Temperature Range

Velocity Measurement

Method Doppler Ultrasonic

Frequency 500 kHz

Transmission Angle 20° from horizontal

Typical Minimum Depth
for Velocity Measurement

Range -1.5 to +6.1 m/s -5 to +20 ft./s

Accuracy

Operating Temperature
Range

Temperature Measurement

Accuracy ± 2°C

NOTES:

1. Actual vertical distance between the area velocity sensor and the liquid surface

2. Maximum non-linearity , hysteresis, and temperature error from actual liquid level

3. In water with a uniform velocity profile and a speed of sound of 1480 m/s (4850 ft./s)

4. The serial tag of the AV2150EX sensor contains important X marking, indicating special safety conditions that must
be observed. See Important Information Regarding "X" Marking on page 2-26 for more information.

3

-10° to 60°C -14° to 140°F

0° to 50°C 32° to 122°F

25 mm 0.08 ft.

Velocity Error

-1.5 to +1.5 m/s (-5 to +5 ft./s) ±0.03 m/s (±0.1 ft./s)

1.5 to 6.1 m/s (5 to 20 ft./s) ±2% of reading

-40° to 60°C -40° to 140°F

1-10

2150EX Area Velocity Flow Module

Section 1 Introduction

G

F

A

E

D

Communications Port

Figure 1-5 2150EX Area Velocity Flow System Communication Connector Pins

B

C

Table 1-9 Communication Connector Pins

Pin Name Description

A NETA Network differential transceiver Data A

B NETB Network differential transceiver Data B

C VIN+ Positive power supply voltage input (+8 VDC nominal)

D VIN– Negative power supply voltage input (0 VDC nominal)

E RCVUP PC data receiver RS232 compatible input

F XMTUP PC data transmit RS232 compatible output

G Key Aligns connector pins

CAUTION

The connector of the interrogator cable and protective cap both
have an alignment key to ensure proper connection. Observe
proper alignment and NEVER reverse the connector. Even a
momentary pin short can cause permanent damage to the bat­teries.

1-11

2150EX Area Velocity Flow Module
Section 1 Introduction

1-12

2150EX Area Velocity Flow Module

Section 2 Preparation and Installation

2.1 Unpacking Instructions

Teledyne Isco, Inc.

Customer Service Dept.
P.O. Box 82531
Lincoln, NE 68501 USA

Phone:[phone]
Outside USA & Canada
call:
[phone]

FAX: [phone]

When the system arrives, inspect the outside packing for any
damage. Then carefully inspect the contents for damage. If there
is damage, contact the delivery company and Teledyne Isco (or its
agent) immediately.

WARNING

If there is any evidence that any items may have been
damaged in shipping, do not attempt to install the unit.
Please contact Teledyne Isco (or its agent) for advice.

When you unpack the system, check the items against the
packing list. If any parts are missing, contact the delivery
company and Teledyne Isco’s Customer Service Department.
When you report missing part(s), please indicate them by part
number. In addition to the main packing list, there may be other
packing lists for various sub-components.

It is recommended that you retain the shipping cartons as they
can be used to ship the unit in the event that it is necessary to
transport the system.

Please complete the registration card and return it to Teledyne
Isco, Inc.

E-mail:
[e-mail]

2-1

2150EX Area Velocity Flow Module
Section 2 Preparation and Installation

2.2 Preparing for Installation

2.2.1 Safety

A 2150EX flow system may be a portable installation, powered
by a 2191EX or 2196EX battery module (described in Section

2.4), or a permanent installation, powered from the safe area by
the 2194EX network interface module (described in Section 2.5).

WARNING

Intrinsic safety is dependent on proper installation in
accordance with IEC 60079-14 and IEC 60079-17
International Standards, or ATEX Group II, Category 1G or
2G requirements of the authority that has jurisdiction for
the installation of equipment in hazardous areas at your
specific installation site. Installation should be performed
only by trained and qualified personnel.

WARNING

Avoid hazardous practices! If you use these instruments in
any way not specified in this manual, the protection
provided by the instruments may be impaired; this will
increase your risk of injury.

WARNING

The installation and use of this product may subject you
to hazardous working conditions that can cause you
serious or fatal injuries. Take any necessary precautions
before entering a worksite. Install and operate this product
in accordance with all applicable safety and health
regulations, and local ordinances.

The 2150EX module components are often installed in confined
spaces. Some examples of confined spaces include manholes,
pipelines, digesters, and storage tanks. These spaces may become
hazardous environments that can prove fatal for those unpre­pared. In the United States, these spaces are governed by OSHA

1910.146 and require a permit before entering.

Read the Safety section at the front of this manual, and the
general safety information in Appendix E.

2.2.2 Locating the Site The 2150EX is designed to measure flow in open channels with or without a primary device. A primary device is a hydraulic structure, such as a weir or a flume that modifies a channel so there is a known relationship between the liquid level and the flow rate. Although the 2150EX supports flow rate conversion in channels with a primary device, its level and velocity mea­surement capabilities are best suited for channels without a primary device.

2-2

2150EX Area Velocity Flow Module

Section 2 Preparation and Installation

Note

Primary devices limit the usefulness of the AV Sensor’s read­ings. In most cases, levels and velocities near these structures
do not represent what normally occurs in the channel. If you
must use area velocity flow conversion, or if your interest is the
stream’s velocity, do not install the AV Sensor near a primary
device. Move the AV Sensor away to where the flow is unaf­fected by the primary device.

2.2.3 Channels Without a

Primary Device

2.2.4 Channels With a

Primary Device

2.2.5 2150EX and AV Sensor

Mounting
Considerations

When the AV Sensor is installed without a primary device, find a
section of channel with a minimum of disturbances to the flow.
Avoid areas with elbows, outfalls, inverts, junctions, etc. that
create turbulence near the AV Sensor. The AV Sensor should be
located away from these disturbances to a point where the flow
has stabilized. For best results, install the AV Sensor where the
flow is most uniform. Uniform flow is a condition where the
water surface is parallel to the bottom of the channel.

If the AV Sensor is installed in a primary device, its location
depends on the type of primary device. Most primary devices
have a specific place for the head (level) measurement sensor. For
more details about the location of the head measuring point,
refer to the Isco Open Channel Flow Measurement Handbook, or
to information provided by the manufacturer of the primary
device.

Note

When you install the AV Sensor for use within a primary
device, a Level-to-Flow conversion method should be used.
(See Programming, Section 3.)

Ideal sites are easily accessible for service and data collection,
while still providing protection for the 2150EX module devices.
The 2150EX module devices are rated NEMA 4X, 6P, and con­structed of materials that can withstand harsh environments.
However, continual exposure to UV light, or periodic submersion
should be avoided to extend the life of the components.

Typically, the 2150EX is suspended inside a manhole. Sus­pending the 2150EX near the opening will protect it from the ele­ments, minimize the chance of submersion, and allow it to be
easily retrieved without entering the manhole.

2-3

2150EX Area Velocity Flow Module
Section 2 Preparation and Installation

2.3 Site Examples Figures 2-1, 2-2, and 2-3 illustrate typical round-pipe sites. Key

items are called out in the illustration and explained below.

Figures 2-1 and 2-2 represent portable installations. For
details about portable installations, see Section 2.4.

Figure 2-3 represents a permanent installation. For details
about permanent installations, see Section 2.5.

The computer running Flowlink (Figures 2-1 and 2-3) or the
2101 Field Wizard module (Figure 2-2) should be located
outside the potentially explosive atmosphere. The computer and
modules communicate with the 2150EX module.

The 2150EX area velocity flow module measures and stores
the stream data. In portable installations (Figures 2-1 and 2-2),
it is attached to a 2191EX or 2196EX battery module, which
supplies power to the module.

As described in Section 2.6.1, the EX network cable connects to
the top of the 2150EX stack and extends to the interface of the
safe and hazardous areas.

As described in Section 2.6.2, an RS232EX isolator cable con­nects the computer and the site. The cable supports the data
transfers between the two, and is connected to an EX Network
Cable connected to the top of the 2150EX module.

As described in Section 2.6.3, an RS485EX isolator cable con­nects the site with a Field Wizard or other network device. The
cable supports the data transfers between the two, and is con­nected to an EX Network Cable, connected to the top of the
2150EX module.

In permanent installations (Figure 2-3), the 2150EX is connected
via a network interface cable, usually through conduit, to the
2194EX network module, located in the safe area, which
serves as both power supply and network or PC connection.

The AV2150EX sensor cable must be routed carefully without
kinks, coils, or sharp bends, but may be snake-looped and tied.
Any excess cable must be kept out of the channel to prevent
debris from collecting.

The Mounting Ring holds the AV2150EX sensor in place.

The AV2150EX sensor is positioned in the flow stream to
measure liquid level and velocity.

2-4