Teledyne ADFM Pro20, ADFM Analog Output Module, ADFM Hot Tap Technical Manual

ADFM

Acoustic Doppler Flow Meter

TECHNICAL MANUAL

This manual includes information for the following products:

ADFM Analog Output Module

Teledyne Isco P/N 69-7103-001
January 2000

ADFM Pro20

ADFM Hot Tap

ADFM Velocity Profiler

Technical Manual

January 2000

NOTE. This manual applies to ADFM firmware version 6.37 or higher. When newer firmware

versions are released, some commands may be modified or added. Read the README file on
the upgrade disk or check MGD’s web site for the latest changes.

IMPORTANT NOTICE

MGD Technologies Inc. was acquired as a subsidiary of Teledyne Isco Inc. in December, 2005 and was
merged into Teledyne Isco in May, 2006. New contact information is printed below:

Teledyne Isco Inc.

4700 Superior Street

Lincoln, Nebraska, 68504

[phone] [phone]

FAX [phone]

E-mail (Customer Service): [e-mail]

E-mail (Technical Service): [e-mail]

Web site: www.isco.com

Copyright © 2000 by MGD Technologies Inc., Copyright © 2006 by Teledyne Isco Inc. - All rights reserved.

Teledyne Isco P/N 69-7103-001 (January 2000)

Table of Contents

LIST OF EFFECTIVE PAGES

Edition 4 – January 14, 2000 – Firmware version 6.37

New editions are complete revisions of the manual. Update packages, which are issued
between editions, contain additional and replacement pages to be merged into the manual by
the customer. The dates on the title page change only when a new and revised edition is
published.

A software and/or firmware version code may be printed before the issue data; this indicates
the revision level of the software and/or firmware of this instrument at the time of the manual
or update was issued. Many product updates and fixes do not require manual changes and,
conversely, manual corrections may be done without accompanying product changes.
Therefore, do not expect a one to one correspondence between product updates and manual
updates.

The total number of pages in this manual is 148.

Section # of Pages

Table of Contents 10
Chapter 1 6
Chapter 2 10
Chapter 3 6
Chapter 4 8
Chapter 5 10
Chapter 6 10
Appendix-A 10
Appendix-B 6
Appendix-C
Appendix-D
Appendix-E

Total page count

52

6

14

148

ii MGD Technologies Inc.

Table of Contents

RECORD OF CHANGES

Edition Effective Description

3 February 96 Firmware version 6.17 through 6.30
4 January 00 Firmware version 6.37

ADFM Technical Manual (January 2000) iii

Table of Contents

NOTES

iv MGD Technologies Inc.

Table of Contents

Table of Contents

Introduction to the ADFM Velocity Profiler™.......................................1-1

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

1-2 Getting Started.........................................................................................................1-1

1-3 General Operation....................................................................................................1-2

1-3.1 General Warnings and Cautions .........................................................................1-2

1-4 ADFM Components Overview..................................................................................1-3

1-4.1 What is an ADFM? ..............................................................................................1-4

1-4.2 Principles of Operation........................................................................................1-4

1-4.3 User Data Interfaces............................................................................................1-6

Equipment Setup and Installation .........................................................2-1

2-1 Introduction...............................................................................................................2-1

2-2 Initial Inspection........................................................................................................2-2

2-3 System Interconnection............................................................................................2-2

2-3.1 Connecting the Transducer Cable to the Electronics Unit...................................2-3

2-3.2 Power Supply to the ADFM .................................................................................2-3

Power Supply Options.........................................................................................2-3

Line Voltage Selection.........................................................................................2-4

Mains (AC) Power Cable.....................................................................................2-4

DC Power Supply Cable......................................................................................2-4

2-3.3 Applying Power....................................................................................................2-5

2-4 Built In Tests (BITs)..................................................................................................2-5

2-4.1 Testing Interval....................................................................................................2-5

2-4.2 Test Record.........................................................................................................2-5

2-4.3 Power-UP BIT Procedure/Sequence...................................................................2-6

2-5 Final Preparations for Use........................................................................................2-6

2-5.1 Measure Pipe or Channel Geometry...................................................................2-6

2-5.2 Prepare Installation Hardware.............................................................................2-7

2-5.3 Install Software and Configure Station File .........................................................2-8

2-5.4 Installing and Deploying the ADFM.....................................................................2-9

2-6 Packaging and Shipping the ADFM .........................................................................2-9

2-6.1 Tagging For Service............................................................................................2-9

2-6.2 Packaging............................................................................................................2-9

Software Operation.................................................................................3-1

3-1 Introduction...............................................................................................................3-1

3-2 Computer Requirements..........................................................................................3-1

3-3 WinADFM.................................................................................................................3-2

3-3.1 Related Files........................................................................................................3-2

3-4 Using BBTALK .........................................................................................................3-4

3-4.1 Running BBTALK ................................................................................................3-4

3-4.2 BBTALK Help ......................................................................................................3-4

3-4.3 Wakeup the ADFM..............................................................................................3-5

3-4.4 Communication Parameters................................................................................3-5

3-4.5 BBTALK LOG Files..............................................................................................3-6

ADFM Technical Manual (January 2000) v

Table of Contents

Maintenance ............................................................................................4-1

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

4-2 Desiccant..................................................................................................................4-1

4-3 Battery Replacement................................................................................................4-2

4-3.1 Replacing the Alkaline Lantern System Batteries................................................4-2

4-3.2 Replacing the Lead-Acid System Batteries .........................................................4-3

4-3.3 Recharging The Lead-Acid System Batteries......................................................4-3

4-3.4 Replacing The Real Time Clock Backup Battery.................................................4-4

4-4 Fuse Replacement...................................................................................................4-4

4-5 Changing Mains Supply Voltage ..............................................................................4-5

4-6 Replacement Parts...................................................................................................4-6

ADFM Test Procedures...........................................................................5-1

5-1 Introduction...............................................................................................................5-1

5-2 Test Setup................................................................................................................5-1

5-3 Built-In Diagnostic Tests...........................................................................................5-2

5-3.1 Automatic Built-In Test Test ................................................................................5-2

5-4 Using BBTALK to Test the ADFM ............................................................................5-3

5-4.1 Diagnostic Tests..................................................................................................5-3

5-4.2 Receive Path Test...............................................................................................5-4

5-4.3 Transmit Test.......................................................................................................5-5

5-4.4 Sensor Test.........................................................................................................5-6

5-4.5 Modem Test.........................................................................................................5-7

5-4.6 Recorder Test......................................................................................................5-7

5-5 Using WinADFM to Test the ADFM..........................................................................5-8

5-5.1 Connect...............................................................................................................5-8

5-5.2 Bench Test ..........................................................................................................5-8

5-5.3 Field Test.............................................................................................................5-9

ADFM Troubleshooting ..........................................................................6-1

6-1 Introduction...............................................................................................................6-1

6-2 Equipment Required.................................................................................................6-2

6-3 Power On Fault Isolation..........................................................................................6-3

6-4 Fault Isolation...........................................................................................................6-3

6-5 Least Replaceable Assembly Fault Isolation............................................................6-6

6-5.1 Built-in Test is Not Executing...............................................................................6-6

Communication....................................................................................................6-6

6-5.2 Power ..................................................................................................................6-7

6-5.3 BIT Determines a Problem Associated with the Transducer.............................6-10

ADFM System Overview........................................................................A-1

A-1 Introduction.............................................................................................................. A-1

A-2 Electronics Unit Circuit Description ......................................................................... A-1

A-2.1 Power Supply System......................................................................................... A-1

A-2.2 Receiver ............................................................................................................. A-2

A-2.3 Timing Generator................................................................................................ A-3

A-2.4 Central Processing Unit...................................................................................... A-3

A-2.5 User Interface..................................................................................................... A-4

A-3 Transducer Electronics Circuit Description ............................................................. A-5

A-3.1 Multiplexer.......................................................................................................... A-5

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Table of Contents

A-3.2 Transmit Path..................................................................................................... A-5

A-3.3 Receive Path...................................................................................................... A-5

A-3.4 Temperature Interface........................................................................................ A-6

A-3.5 Transducer Power Supply.................................................................................. A-6

Specifications.........................................................................................B-1

B-1 Physical Specifications............................................................................................ B-1

B-2 Performance Specifications..................................................................................... B-3

B-2.1 Measurement Precision...................................................................................... B-3

Flow Accuracy.................................................................................................... B-3

Velocity............................................................................................................... B-3

Water Level ........................................................................................................ B-4

B-2.2 Packaging and Environmental............................................................................ B-4

Transducer ......................................................................................................... B-4

Electronics Unit................................................................................................... B-4

Transducer Signal Cable.................................................................................... B-4

Acoustic Frequency............................................................................................ B-4

B-2.3 Data Management..............................................................................................B-5

ADFM Velocity Profiler™ Data Output ................................................................ B-5

ADFM Velocity Profiler™ Software ..................................................................... B-5

Data Storage (optional) ...................................................................................... B-5

Data Interfaces................................................................................................... B-6

B-2.4 Power and Frequency ........................................................................................ B-6

Power ................................................................................................................. B-6

ADFM Commands.................................................................................. C-1

C-1 Introduction..............................................................................................................C-1

C-1.1 ADFM Data Communication and Command Format..........................................C-2

C-1.2 Command Input Processing...............................................................................C-2

C-1.3 Data Output Processing.....................................................................................C-3

C-2 Command Descriptions...........................................................................................C-6

? - Help Menus:..................................................................................................C-7

Break:.................................................................................................................C-7

C-2.1 Control System Commands................................................................................C-8

CA - Communication Timeout.............................................................................C-8

CB - Serial Port Control (Baud Rate/Parity/Stop Bits)........................................C-8

CF - Flow Control: .............................................................................................. C-9

CK - Keep Parameters .....................................................................................C-10

CL – Leapfrog...................................................................................................C-10

CN - Site Number .............................................................................................C-10

CP - Clear BIT Log ...........................................................................................C-10

CR - Retrieve Parameters ................................................................................C-10

CS - Start Pinging (Go)..................................................................................... C-11

CT – Turnkey....................................................................................................C-11

CV - Shut Off Voltage.......................................................................................C-12

CZ - Power Down ADFM..................................................................................C-12

C-2.2 Environmental Sensor Commands...................................................................C-13

EA Heading Alignment ..................................................................................... C-13

EC - Speed Of Sound.......................................................................................C-13

ED - Depth Of Transducer................................................................................C-13

ADFM Technical Manual (January 2000) vii

Table of Contents

C-2.3 Modem Commands ..........................................................................................C-18

C-2.4 Performance and Test Commands...................................................................C-22

C-2.5 Discharge Commands ......................................................................................C-33

C-2.6 Recorder Commands ....................................................................................... C-37

EE - Secondary Depth Max. Probable Error.....................................................C-14

EO - Secondary Depth Zero Offset...................................................................C-14

ER - Secondary Depth Span ............................................................................C-14

ES - Salinity...................................................................................................... C-15

ET - Temperature .............................................................................................C-15

EX - Coord Transform.......................................................................................C-15

EZ - Sensor Source:......................................................................................... C-17

MC - Modem Command ................................................................................... C-18

MH - Hangup on Ping Start .............................................................................. C-18

MI - Modem Answer Init.................................................................................... C-18

MM - Modem Monitor........................................................................................C-19

MN - Dial out Phone Number............................................................................C-20

MO - Check to see if the Modem is OK............................................................C-20

MP - Modem Power.......................................................................................... C-20

MT - Modem Terminal ......................................................................................C-21

MZ - Modem Reset...........................................................................................C-21

PA - User Interactive Tests............................................................................... C-22

PC - Diagnostic Tests.......................................................................................C-22

PD - Data Stream Select ..................................................................................C-23

PF - Display Fault Log...................................................................................... C-23

PI Run Individual Built-In Tests ........................................................................ C-24

PS - Show System Parameters........................................................................C-24

PT - Built-In Tests.............................................................................................C-25

PT0 – Help........................................................................................................ C-26

PT1 – Board Level Receive Test......................................................................C-27

PT2 - Ancillary System Data............................................................................. C-28

PT3 - Receive Path .......................................................................................... C-28

PT4 - Transmit Path ......................................................................................... C-29

PT5 - Electronics Wrap Around........................................................................ C-30

PT6 – Receive Bandwidth ................................................................................C-31

PT8 - Checksum Lookup Tables......................................................................C-32

QB - Bed Level .................................................................................................C-33

QC - Channel Type........................................................................................... C-33

QD - Algorithm Select.......................................................................................C-33

QF - Force Depth.............................................................................................. C-34

QH - Pipe Heights/Epsilons..............................................................................C-34

QO - Transducer Offset from Pipe Bottom .......................................................C-34

QP - Disc Params.............................................................................................C-35

QR - QVD Structure Only Rate.........................................................................C-35

QU - Channel Geometry Units..........................................................................C-35

QW - Pipe Widths/Radii....................................................................................C-36

QZ - Zero Discharge Accumulation ..................................................................C-36

RA - Number Of Deployments Recorded ......................................................... C-37

RB - Blank Check Megabyte # ......................................................................... C-38

RD - Current Deployment Selected..................................................................C-39

RE - Erase Recorder ........................................................................................C-39

RJ - Number Of Ensembles To Jump............................................................... C-39

viii MGD Technologies Inc.

Table of Contents

RS - Recorder Space Used/Free...................................................................... C-40

RT - Recorder Bit.............................................................................................. C-41

RY - Start YModem...........................................................................................C-42

C-2.7 Timing Commands ........................................................................................... C-43

TE - Time Per Ensemble ..................................................................................C-43

TF - Time Of First Ping.....................................................................................C-43

TP - Time per Ping ........................................................................................... C-44

TS - Set Real-Time Clock.................................................................................C-45

C-2.8 Vertical Beam Commands................................................................................ C-46

VC - Proofing of depth...................................................................................... C-46

VD - Data Out...................................................................................................C-46

VM - Surface Track Mode................................................................................. C-46

VN - Vertical Beam Number Of Depth Cells..................................................... C-47

VP - Pings per Ensemble ................................................................................. C-47

VS - Vertical Beam Depth Cell Size ................................................................. C-47

VX - Vertical Beam Transmit Length ................................................................C-47

C-2.9 Water-Profiling Commands .............................................................................. C-48

WC - Correlation Threshold..............................................................................C-48

WD - WT Data Out ........................................................................................... C-48

WE - Error Velocity Threshold..........................................................................C-48

WF - WT Blank After Transmit.......................................................................... C-49

WG - Percent Good Minimum...........................................................................C-49

WM - WT Profiling Mode .................................................................................. C-49

WN - WT Number Of Depth Cells.....................................................................C-50

WO - Single Beam Mode Select.......................................................................C-50

WP - WT Pings Per Ensemble ......................................................................... C-50

WS - WT Depth Cell Size .................................................................................C-50

WV - WT Mode 1 Ambiguity Velocity................................................................ C-51

ADFM Hot Tap Insertion........................................................................ D-1

ADFM Analog Output Module ............................................................... E-1

ADFM Technical Manual (January 2000) ix

Table of Contents

List of Figures

Figure 1-1. ADFM Components ......................................................................................................1-3

Figure 1-2. Typical ADFM installation.............................................................................................1-4

Figure 1-3. ADFM Beam Geometry................................................................................................1-5

Figure 2-1. ADFM System Interconnection ....................................................................................2-2

Figure 2-2. Pipe Geometry and Parameters...................................................................................2-7

Figure 2-3. Transducer Orientation ................................................................................................2-8

Figure 3-1. BBTALK Menu.............................................................................................................. 3-4

Figure 3-2. BBTALK Help Screen ...................................................................................................3-4

Figure 3-3. BBTALK Communication Setup Menu.......................................................................... 3-5

Figure 3-4. BBTALK Log File..........................................................................................................3-6

Figure 4-1. ADFM Electronic Housing (Exterior View) – Replaceable Parts Identification .............4-7

Figure 4-2. ADFM Electronic Housing (Interior View) – Replaceable Parts Identification...............4-8

Figure 5-1. WinADFM Operate Dialog Window..............................................................................5-8

Figure A-1. Electronics Unit Block Diagram ................................................................................... A-7

Figure A-2. Transducer Block Diagram.......................................................................................... A-9

Figure B-1. ADFM Transducer Dimensions................................................................................... B-2

Figure B-2. ADFM Field Housing Dimensions............................................................................... B-3

Figure C-1. Pipe Heights/Epsilons............................................................................................... C-34

List of Tables

Table 1-1: User Data Interface Types ...........................................................................................1-6

Table 4-1: List of ADFM Replacement Parts.................................................................................4-6

Table 6-1: List of Least Replaceable Assemblies..........................................................................6-1

Table 6-2: Required Test Equipment.............................................................................................6-2

Table 6-3: List of Test Points.........................................................................................................6-9

Table A-1: Electronics Unit Block Diagram Legend...................................................................... A-8

Table A-2: Transducer Block Diagram Legend........................................................................... A-10

Table C-1: ADFM Commands.......................................................................................................C-3

Table C-2: ADFM Command Groups............................................................................................ C-6

Table C-3: CMD Description ......................................................................................................... C-9

Table C-4: Coordinate Transformation Processing Flags...........................................................C-16

Table C-5: Sensor Source Switch Settings.................................................................................C-17

Table C-6: Data Stream Selections............................................................................................. C-23

Table C-7: Error Code Hex to Binary Conversion.......................................................................C-26

x MGD Technologies Inc.

Table of Contents

NOTES

ADFM Technical Manual (January 2000) xi

Table of Contents

xii MGD Technologies Inc.

Introduction to the ADFM Velocity Profiler™

Chapter

Introduction to the ADFM Velocity Profiler™

1-1 Overview

This technical manual is intended to be the detailed reference for the ADFM
Velocity Profiler™ (ADFM), using the firmware version listed on the title
page. This manual contains information on ADFM set up, operati on, data
retrieval, maintenance, testing, and troubleshooting.

1-2 Getting Started

Please take the time to read these instructions. We have tried to make the
ADFM and it’s manual easy to use. Before using the ADFM to collect real
data:

• Page through this manual to become familiar with its contents;

• Familiarize yourself with ADFM components by looking at dia-

grams;

• Use Chapter 2 to install, connect, test, and deploy the ADFM;

• Use Chapter 3 to issue software commands and begin collecting

data;

• Use Chapter 4 as a maintenance and troubleshooting guide;

• Use Appendices for additional reference.

ADFM Technical Manual (January 2000) page 1-1

Chapter 1

If you have questions pertaining to a specific ADFM system installed,
please have the following information on hand before contacting us:

Serial # of Electronics Unit and
Transducer:

Technical Support will need to know
the serial number to obtain the sys­tem’s configuration before they can
help you.

Contents of the WinADFM con­figuration file:

A detailed description of the
problem:

We need to know the setup of the
ADFM, and site details.

Try to answer what happened and
when it happened. What were the cir­cumstances leading to the problem. Be
as detailed as possible.

1-3 General Operation

Before applying mains power, verify that the power entry module voltage
selection matches the available line voltage, the correct fuse is installed, and
safety precautions are taken.

1-3.1 General Warnings and Cautions

This section contains a list of items you should be aware of every time you
use your ADFM. Please refer to this list often.

• Before mains power is supplied to the ADFM, the protective

earth (ground) terminal of the instrument must be connected to
the protective conductor of the mains power cord. The mains
plug shall only be inserted in a socket outlet provided with a pro­tective earth contact. The protective action must not be negated
by the use of an extension cord (power cable) without a protec­tive conductor (grounding). Grounding one conductor of a two­conductor outlet is not sufficient protection.

• Servicing instructions are for use by service-trained personnel. To

avoid dangerous electric shock, do not perfor m any ser vice un­less qualified to do so.

• If this instrument is to be supplied via an auto-transformer, make

sure the common terminal is connected to the earth terminal of
the power source.

• Any interruption of the earthing (grounding) conductor, inside or

outside the instrument, or disconnecting the pr otecti ve earth t er­minal will cause a potential shock hazard that could result in
personal injury.

page 1-2 MGD Technologies, Inc.

Introduction to the ADFM Velocity Profiler™

• Only fuses with the required rated current, voltage, and specified

type should be used. Do not repa i r fuses or s hort c ircuit fuse­holders. To do so could cause a shock or fire hazard.

• Do not install substitute parts or perform any unauthorized modi-

fications to the instrument.

• Certain test measurements described in the manual are performed

with power supplied to the instrument while protective covers
are removed. Energy available at many points may, if contacted,
result in personal injury.

• Any maintenance and repair of the opened instrument under volt-

age should be avoided as much as possible, and when inevitable,
should be carried out only by a skilled person who is aware of
the hazards involved.

• Capacitors inside the instrument may still be charged even if the

instrument has been disconnecte d from it s sour ce of s uppl y.

1-4 ADFM Components Overview

Figure 1-13 illustrates the three major components of a ADFM system. Two
components are installed at each site: a transducer, installed in the bottom
of a pipe or channel, and its Electronics Unit, installed nearby in a non­hazardous atmosphere. These two components communicate with the third
system component, a remote host IBM compatible PC computer, either via
a Modem, or a serial data interface (RS-232 or RS- 422) .

Computer with Modem

Telephone line

Figure 1-1. ADFM Components

Serial cable

Laptop computer

TransducerTransducer cable

ADFM Technical Manual (January 2000) page 1-3

Chapter 1

To allow measurements close to the bottom of the pipe or channel and to
minimize debris collection on the transducer, the ADFM transducer is de­signed to have a low profile. It therefor e contai ns a mini mum of re quired
electronics. The Electronics Unit and transducer contain all circuitry and
systems needed to measure directional flow, the level within the sewer pipe,
to record results, and to transfer data from and to local or remote locations.

Use of a laptop computer running Windows 95 and the WinADFM software
is recommended for initial setup of the ADFM on-site. Subsequent data
collection and re-programming may be performed locally or remotely via
modem if a telephone telemetry connection is available.

1-4.1 What is an ADFM?

The ADFM V elocity Profiler™ (ADFM) is a flow meter based on the Dop­pler principle. The ADFM consists of a transducer assembly mounted in the
flow, a signal processing unit and an interface cable

1-4.2 Principles of Operation

Figure 1-24 shows a typical ADFM installation for measuring open channel

flow in a pipe. A transducer assembly is mounted on the invert of a pipe or
channel. Piezoelectric ceramics emit short pulses along narrow acoustic
beams pointing in different directions. Echoes of these pulses are backscat­tered from material suspended in the flow. As this material has motion rela­tive to the transducer, the echoes are Doppler shifted in frequency. Meas­urement of this frequency enables the calculation of the flow speed. A fifth
ceramic mounted in the center of the transducer assembly, and aimed verti­cally, is used to measure the depth.

Velo c ity Profile # 2

Dept h c e lls

Velo c ity P ro f ile # 1

Flow pattern

Figure 1-2. Typical ADFM installation

page 1-4 MGD Technologies, Inc.

transducer

Introduction to the ADFM Velocity Profiler™

The ADFM divides the return signal into discrete regular intervals that cor­respond to different depths in the flow. Velocity is calculated from the fre­quency shift measured in each interval. The result is a profile, or linear dis­tribution of velocities, along the direction of the beam. Each of the small
black circles in Figure 1-24 represent an individual velocity measurement in
a small volume known as a depth cell.

The directions of the velocity profiles in Figure 1-24 are based on the ge­ometry of the ADFM’s transducer assembly. Figure 1-35 shows a side view
of the transducer assembly. The profiles shown in Figure 1-24 are gener­ated from velocity data measured by an upstream and downstream beam
pair. The data from one beam pair are averaged to generate Profile #1, and
a beam pair on the opposite side of the transducer assembly generates Pro­file #2.

Since Doppler measurements are directional, only the component of veloc­ity along the direction of transmit and receive is measured, as shown in

Figure 1-35. Narrow acoustic beams are required to accurately determine

the horizontal velocity from the measured component. The narrow acoustic
beams of the ADFM insure that this measurement is accurate. Also, the
range-gate times are short and the depth cells occupy a small volume - cyl­inders approximately 5 centimeters (2 inches) long and 5 centimeters (2
inches) in diameter. This insures that the velocity measurements are truly
representative of that portion of the flow. Potential bias in the return energy
spectrum due to range dependent variables is avoided. The result is a very
precise measurement of the vertical and transverse distribution of flow ve­locities.

Flow Velocity Vector

Vector Componen t

Figure 1-3. ADFM Beam Geometry

The velocity data from the two profiles are entered into an algorithm to de­termine a mathematical description of the flow velocities throughout the

ADFM Technical Manual (January 2000) page 1-5

Chapter 1

entire cross-section of the flow. The algorithm fits the basis functions of a
parametric model to the actual data. The result predicts flow velocities at
all points throughout the flow. These results are integrated over the cross­sectional area to determine the discharge.

The key benefit to this approach is that the system will operate accurately
under different hydraulic conditions. As hydraulic conditions change, the
change will manifest itself in the distribution of velocity throughout the
depth of flow. As the ADFM is meas ur ing the velocit y di stri buti on dir ectl y,
it will adapt to the changes in hydraulics, and generate a flow pattern that is
representative of the new hydraulic conditions, insuring an accurate esti­mate of flow rate.

1-4.3 User Data Interfaces

The ADFM has three user data interfaces, which are listed in Ta ble 1- 16 be­low.

Table 1-1: User Data Interface Types
Type: Description:

RS-232 Serial Data Interface, EIA standard RS-232C, used for local data

communication with the ADFM. Not to be used over distances more
than 15 meters. Maximum baud rate is 57600 Baud.

RS-422 Serial Data Interface, EIA standard RS-422, used for local or remote

data communication over distances up to 1.2 km. Maximum Baud rate
is 115 kBaud.

Modem 28800 bps Modem with data compression and error correction

capabilities, used for remote data communication with the ADFM.

For a complete set of specifications for the serial data interfaces please refer
to the EIA specifications. For more information on available modems,
please contact MGD Te chnologies Inc.

page 1-6 MGD Technologies, Inc.

Equipment Setup and Installation

Chapter

Equipment Setup and Inst allation

2-1 Introduction

This section of the manual contains information and instructions for inspec­tion, configuration, testing, installation, and deployment of the ADFM Ve­locity Profiler™. Included in this section are:

• Initial inspection procedures

• Connecting the ADFM components

• Power supply options

• Built-in tests (BITs)

• Final preparations for use

• Installing and deployment

• Packing and shipping information

The general sequence of events in installing and deployment of an ADFM
are:

• Prepare portable computer to be taken to installation site.

• Perform pre-installation equipment and operational checks.

• Connect the ADFM Transducer and Electronics Unit via the

Transducer Cable.

• Measure channel dimensions and determine geometry.

• Setup ADFM configuration file for each installation site.

• Install the ADFM transducer and electronics unit, conduct final

testing.

• Program desired data logging parameters into the ADFM.

• Connect phone line to ADFM Modem port, if required.

ADFM Technical Manual (January 2000) page 2-1

Chapter 2

s

2-2 Initial Inspection

On receipt, inspect the shipping contai ner for damage. If shipping container
or cushioning material is damaged, it should be kept until the contents of
the shipment have been c h ecke d for c ompleteness and the system has been
checked both mechanically and electrically. If the contents are incomplete,
if there is evidence of mechanical damage or defects, or if the syste m indi­cates a failure in some component during the initial testing procedure,
please notify MGD Technologies Inc. as soon as possible. If the shipping
container is damaged, or the cushioning material shows signs of stress, no­tify the carrier as well as MGD Technologies Inc. Keep the shipping mate­rials for the carrier’s inspection.

2-3 System Interconnection

Use Figure 2-12 to connect the ADFM cables and the computer.

Internal Batterie

Serial Cable
(Optional - for
Testing Only)

Laptop Computer
(Optional - for Testing Only)

115 to 230 VAC 50 - 60 Hz

(Optional)

Figure 2-1. ADFM System Interconnection

Modem Port (Optional)

24 to 36 VDC (Optional)

Transducer

Cable

page 2-2 MGD Technologies, Inc.

Equipment Setup and Installation

2-3.1 Connecting the Transducer Cable to the Electronics Unit

The transducer cable is a multi-pair, multi-shielded cable designed specifi­cally for use with the ADFM. The standard cable length is 15 meters (49
feet), but other cable lengths are available. Contact MGD Technologies Inc.
for details. Extension cables are not recommended due to EMI/RFI con­straints.

CAUTION. Use caution when mating or unmating the transducer cable to
the transducer assembly and Electronics Unit to avoid damage to the
connector hardware. UNDER ALL CIRCUMSTANCES, THE INTRUSION
OF WATER OR ANY OTHER FOREIGN MATTER INTO THE
CONNECTOR CONTACT AREA MUST BE AVOIDED, SINCE THIS MAY
RESULT IN PERMANENT DAMAGE TO THE CONNECTOR AND MAY
RENDER THE ADFM INOPERABLE.

The transducer cable connects to the electronics unit using a 14-position
keyed connector. The receptacle on the electronics unit is located on the
bottom right side of the unit.

To make the connection, remove the blank cap from the receptacle on the
electronics unit. Insert the cable connector into the receptacle, rotating it
until the keyed portions are properly aligned. Thread the coupling ring onto
the receptacle to complete the connection. Reverse this procedure when
disconnecting the cable from the electronics unit.

2-3.2 Power Supply to the ADFM

CAUTION. BEFORE connecting mains (AC) power to this instrument, be

sure the line voltage selector jumpers inside the Electronics Unit is set
properly and the correct fuse is installed.

Power Supply Options

The ADFM is designed to operate from one of three independent power
sources: internal batteries, external DC power supply, or external AC power
supply. All sources may be used concurrently; the source that supplies the
highest voltage will automatically supply power to the system. Mains (AC)
power is converted to a DC supply of approximately 28-30 VDC after recti­fication and filtering inside the ADFM. By combining external mains
power with internal batteries, one can obtain uninterrupted operation of the
ADFM during brief power outages. Both front panel power switches must
be in the “On” position for this to occur.

Two internal battery options are available for the ADFM. The standard con­figuration consists of four 6-volt alkaline lantern batteries wit h spri ng t er­minals. Recommended alkaline batteries are the Eveready Energizer, Model
EN529. These alkaline batteries have approximately 2.5 times the

ADFM Technical Manual (January 2000) page 2-3

Chapter 2

power/life of the lead-acid type. An optional conversion kit for using two
(2) 12-volt, 7-amp hour sealed lead-acid gel cell batteries is also available.

The ADFM will operate from an external DC power supply of 12 to 35
volts, with a power consumption of 3 watts maximum. A supply voltage of
24 to 35 VDC is recommended to allow operation from the internal batter­ies when the external power supply is interrupted. Operation from external
mains (AC) power requires a power s o urce of 115 or 230 VAC, ±10%; 50 to
60 Hz, with a power consumption of 5 VA maximum.

Line Voltage Selection

The ADFM should be delivered pre-configured for the proper voltage. The
current configuration will be indicated by a sticker on the exterior of the
Electronics Unit adjacent to the AC input connector. Before applying mains
power, verify that the ADFM is configured for the correct line voltage. If
the ADFM is configured for the wrong voltage, please contact MGD Tech­nologies Inc. for instructions.

Mains (AC) Power Cable

CAUTION. BEFORE CONNECTING THIS INSTRUMENT TO MAINS, the
protective earth (ground) terminal of the instrument must be connected to
the protective conductor of the mains power cord. The mains power cable
must be connected to a protective earth contact. The protective action
must not be negated by use of an extension cord (power cable) without a
protective conductor (grounding). Grounding a two-conductor outlet does
not provide an instrument ground.

This instrument is provided with a three-conductor power cable for mains
supply. When connected to an appropriate power outlet, this cabl e grounds
the instrument unit. The mains power supply cable normally ships as a pig­tail assembly for field wiring to the mains power supply. The connector on
the cable mates with the left-most receptacle on the ADFM, and that is the
only receptacle it will mate with. Wiring assignments for the mains powe r
cable are as follows:

Pin Color Function

(L) 1 Brown Line
(N) 2 Blue Neutral
(PE) 3 Green Protective Earth

DC Power Supply Cable

This instrument is provided with a two-conductor cable for DC power sup­ply. This cable provides no grounding. The DC power supply cable nor­mally ships as a pigtail assembly for field wiring to the DC power supply.

page 2-4 MGD Technologies, Inc.

Equipment Setup and Installation

The power supply cable mates with the smallest connector on the ADFM.
Wiring assignments for the power cable are as follows:

Pin Color Function

(+) 1 Red + DC
(-) 4 Black - DC

2-3.3 Applying Power

Two key switches on the inner front panel control power to the ADFM. A
third momentary key switch provides a reset function. Ensure that both
power switches are in the “off” position, and the reset switch is not held in
the “reset” position. Connect the appropriate power supply cables to the
ADFM and the power source, if required. Ensure that the batteries are se­curely mounted in the ADFM and that the battery supply wiring harness is
attached. Use the supplied switch-key to switch the appropriate power
source switch(es) to the On-position, indi cated by “1”; this will power-up
the ADFM. If you intend to use both mains and battery power, ensure that
both switches are on.

2-4 Built In Tests (BITs)

When power is first applied to the ADFM, an internal self-test will auto­matically be performed. Result messages will scroll on the LCD display,
culminating in a display showing the ADFM firmware version number on
the first line and a hexadecimal-coded error map on the second line. The
software used to operate the ADFM will periodically report and reset the
error code map, and to re-run selected tests. By interpretation and further
fault isolation, it is possible to isolate a hardware problem to a least re­placeable assembly (LRA) level. For a list of LRAs refer to Chapter 4-

Table 4-1, page 4-6: List of Least Re plac eable Assemblies

2-4.1 Testing Interval

Routine execution of the built-in tests is not required during normal system
operation. Execution of selected built-in tests from software is recom­mended quarterly or at each battery change, whichever is more frequent.
The built-in tests should also be performed whenever a hardware problem
with the ADFM is suspected. See
further details.

2-4.2 Test Record

The WinADFM software by default will create a log containing details of
all ADFM operations, including the status of the error code map and the re­sults of all built-in tests. No further test record is required unless specifi­cally requested by Technical Support Personnel.

.

Chapter 3 and the software manual for

ADFM Technical Manual (January 2000) page 2-5

Chapter 2

2-4.3 Power-UP BIT Procedure/Sequence

a. Switch power to the ADFM off.
b. Switch power on again; however, make sure at least ten minutes

have passed since all power was switched off. The ADFM’s LCD
display should show firmware version and error code map followed
by the “wake up message”:

RD Instruments:

------------------­Acoustic Doppler
Flow Meter

c. The ADFM’s LCD display should begin displaying the results of the

power-up BIT, as these tests are executed. The power-up BIT tests
will take approximately one or t wo mi nutes t o per for m af ter which
the LCD display will show the firmware version and BIT error code
map (see Chapter 5 for details):

ADFM Ver. V6.xx
09000080

d. To repeat the power-up BIT tests you may turn and release the Reset

key switch, located on the front panel of the Electronics Unit.

2-5 Final Preparations for Use

2-5.1 Measure Pipe or Channel Geometry

In order for the ADFM to measure flow accurately, it must have information
about the pipe or channel in which it is installed. Refer to Figure 2-27 for a
diagram of the channel geometries directly supported by the ADFM. The
pipe/channel shape must be symmetrical about the vertical cente rli ne. Ap­plication of the ADFM in pipes or channels of other geometries may be
possible. Please contact MGD Technologies Inc. with specific detai ls of
your application for further information.

page 2-6 MGD Technologies, Inc.

Equipment Setup and Installation

:

W3

W2

H3

W1

H2

H1

z

Rectangular and Trapezoidal shaped:

y

x

H = Heights in meters

W = Widths in meters

R2

R2

Circular or Egged-shaped

a = Angles in degrees

R3

a3

a2

a1

R1

R = Radii in meters

Figure 2-2. Pipe Geometry and Parameters

During installation, the following parameters need to be recorded, as they
are needed by the software to estimate discharge:

• Cross-sectional geometry: For rectangular channels, the width

(W) and the height (H) need to be recorded. For circular
pipes/channels the, radii (R) and angles (a) nee d to be recorde d.
These parameters will be entered into software and used to esti­mate discharge. Note that for a circular channel only the Diame­ter (D) needs to be recorded.

• Normal distance from the surface of the transducer fifth beam t o

the invert of the pipe: Enter these dimensions into the “Zero Off­set” box in the WinADFM setup screen.

• Level of silt in the pipe or channel should be entered into the

“Bed Level” box in the WinADFM setup screen.

2-5.2 Prepare Installation Hardware

Installation hardware is available from MGD Technologies Inc. for a variety
of channel shapes and sizes. Please contact MGD Technologies Inc. for fur­ther information, or if you desire assistance in applying the ADFM to your
specific situation.

The ADFM transducer assembly includes three drilled and tapped mounting
holes. To avoid damage to the transducer assembly and ceramics, these
holes are the only locations that should be used to mount the transducer as­sembly to the installation hardware. These mounting holes are drilled and
tapped for a metric size machine screw, size M6-1.0. Inserts are available
to convert the existing holes from metric M6 to metric M3 and US standard
#6-32 size threads.

ADFM Technical Manual (January 2000) page 2-7

Chapter 2

Installation of the ADFM transducer assembly must also comply with the
following parameters to maintain the accuracy of the final installation:

• Transducer must be installed in such a way that the vertical beam

(beam 5) is oriented normal with respect to the pipe’s or chan­nel’s invert. Note that the vertical beam is normal to the trans­ducer’s top surface.

• Transducer must not be rotated about the vertical Z-axis. A sight-

ing device or similar s h oul d be used t o mi ni mi ze r otat iona l mi s ­alignment.

• Transducer must be installed such that positive longitudinal flow

direction is from the “non-cable” side of the transducer to the
“cable” side. See Figure 2-38 below for further explanation of
the flow direction.

TOP

Positive
(Downstream)
direction of flow

+v

+z out of page

+x

Figure 2-3. Transducer Orientation

2-5.3 Install Software and Configure Station File

Before the ADFM can be used in a specific application, it must be
programmed for that application. This is most easily done using the
WinADFM software. See Chapter 3 and the Software Manual for further
details.

page 2-8 MGD Technologies, Inc.

Equipment Setup and Installation

2-5.4 Installing and Deploying the ADFM

Detailed procedures for installing the ADFM in a specific application can­not be provided without detailed knowledge of the application. Please con­tact MGD Technologies Inc. if you desire information or assistance in your
application. “Deployment” refers to the programming of an ADFM with
the site, channel, profiling, and data logging characteristics desired at the
site. Deployment is discussed in more detail in Chapter 3 and the software
manual.

2-6 Packaging and Shipping the ADFM

Clean the Electronics Unit and transducer assembly with mild soap and wa­ter prior to packaging and shipment.
vents as they will damage these surfaces. MILD chlorine bleach solutions
may be used if odors persist or if disinfection of the unit is desired. Use
caution to prevent water from entering the Electronics Unit housing while
cleaning. Ensure that the unit is completely dry prior to packaging and
shipment to avoid corrosion or other damage during shipment. The ADFM
may be shipped with batteries installed, however, all key switches should be
in the “off” position for shipment. Removal of batteries from the unit may
be desirable to reduce the shipping we ight.

DO NOT use abrasive agents or sol-

2-6.1 Tagging For Service

If the instrument is to be shipped to MGD Technologies Inc. for service or
repair, attach a tag to the instrument identifying the owner, address of
owner, complete instrument model and serial number, and a description of
the service required. Mark the container FRAGILE to ensure careful han­dling. In any correspondence, refer to the system by model and full serial
number.

2-6.2 Packaging

The original factory packaging material should be stored for reuse in the
event it becomes necessary to transport the ADFM. If the original packag­ing material is unavailable or unserviceable, mater ials identi ca l or eq uiva­lent to those used in factory packaging are available through MGD Tech­nologies Inc.

For repackaging with commercially available materials follow these instruc­tions:

• Wrap Electronics Unit and transducer assembly separately in

bubble wrap or other cushioning material.

• Use strong shipping container suitable for the weight of the

ADFM. Shipping containers made of wood or plastic are prefer-

ADFM Technical Manual (January 2000) page 2-9

Chapter 2

able, but corrugated shipping boxes of at least 200-lb. test may
be used.

• Use a layer of shock-absorbing materiel, at least 25 mm (1 in)

thick around all sides of the Electronics Unit and transducer as­sembly to firmly cushion and prevent movement inside the con­tainer. Special care must be taken to protect the transducer ce­ramics on the upper face of the transducer assembly from dam­age.

• Seal shipping container securely.

• Mark shipping container FRAGILE to ensure careful handling.

• In any correspondence, refer to system by model number and se-

rial number.

page 2-10 MGD Technologies, Inc.