POLYSONICS DCT-7088 User manual

Chapter
-1
7088-8000
June 1998
DCT-7088 Portable
Digital Correlation Transit Time
Ultrasonic Flowmeter
Software Version 3.23 POLYSONICS
POLYSONICSPOLYSONICS
POLYSONICS
®

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INSTRUCTION MANUAL
DCT-7088 PORTABLE
DIGITAL CORRELATION
TRANSIT TIME FLOWMETER
Notice
This manual is designed to promote personal and system
safety and to optimize product performance. It should be
read carefully before installing, using, or maintaining the
flowmeter.
If a problem occurs that is not resolved in the manual, refer
to Chapter 7 for more information on additional service and
support.
USA
Peek Measurement, Inc.
10335 Landsbury, Suite 300
Houston, Texas 77099-3407 USA
Telephone: [phone]
Facsimile: [phone]
Europe
Peek Measurement, Ltd.
King's Worthy
Winchester, Hampshire SO23 7QA UK
Telephone: [phone]
Facsimile: [phone]
Publication Number 7088-8000
© Peek Measurement Inc. 6/98
Printed in the U.S.A. POLYSONICS
POLYSONICSPOLYSONICS
POLYSONICS®

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Table of Contents
DCT-7088 Portable
Digital Correlation Transit Time
Ultrasonic Flowmeter
CHAPTER 1:
PRODUCT OVERVIEW ................................................................... 1-1
1.1 INTRODUCTION............................................................................................................1-1
1.2 THEORY OF OPERATION...........................................................................................1-1
1.3 TRANSIT TIME ACCURACY.......................................................................................1-3
1.4 OPERATING THE FLOWMETER...............................................................................1-3
1.4.1 RS232 PORT.............................................................................................................................................1-3
1.5 POWER.............................................................................................................................1-4
1.5.1 FUSES.......................................................................................................................................................1-4
1.6 EXTERNAL FEATURES................................................................................................1-6
1.7 SOFTWARE UPGRADES..............................................................................................1-7
1.8. STANDARD CONFIGURATION AND OPTIONS ....................................................1-8
1.9 TECHNICAL SPECIFICATIONS.................................................................................1-9
CHAPTER 2:
SYSTEM COMPONENTS................................................................. 2-1
2.1 BREAKOUT BOX COMPONENTS..............................................................................2-1
2.1.1 BATTERY CHARGER/AC ADAPTER...................................................................................................2-2
2.1.2 PRINTER ..................................................................................................................................................2-2
2.2 SLIDE TRACK.................................................................................................................2-3
2.3 CURRENT LOOP WIRING AND CURRENT LOOP POWERING OPTION........2-4

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CHAPTER 3:
CONFIGURING AND OPERATING THE FLOWMETER 3-1
3.1 KEYPAD AND DISPLAY...............................................................................................3-2
3.1.1 KEYPAD AND DISPLAY COMPONENTS............................................................................................3-2
3.1.2 DISPLAY CONTRAST AND BACKLIGHT...........................................................................................3-3
3.2 DIRECT MENU ACCESS...............................................................................................3-3
3.3 ACCESSING THE MENUS BY SCROLLING ............................................................3-5
3.3.1 SCROLLING THROUGH THE MAIN MENU AND SUB-MENUS......................................................3-5
3.3.2 SCROLLING THROUGH PRIMARY DISPLAYS, SETUP MENUS,
AND DIAGNOSTIC MENUS ..................................................................................................................3-6
3.4 ENTERING DATA IN THE SETUP MENUS..............................................................3-6
3.5 QUICK SETUP.................................................................................................................3-7
3.6 PRIMARY DISPLAYS, SETUP MENUS, AND DIAGNOSTIC MENUS.................3-8
3.6.1 PRIMARY DISPLAYS.............................................................................................................................3-8
3.6.2 PIPE SETUP MENUS...............................................................................................................................3-9
3.6.3 LINER SETUP MENUS .........................................................................................................................3-11
3.6.4 FLUID SETUP MENUS .........................................................................................................................3-13
3.6.5 TRANSDUCER SETUP MENUS...........................................................................................................3-14
3.6.6 FLOW SETUP MENUS..........................................................................................................................3-15
3.6.7 TOTALIZER SETUP MENUS...............................................................................................................3-18
3.6.8 OPTIONS SETUP MENUS....................................................................................................................3-21
3.6.9 CALIBRATION SETUP MENUS..........................................................................................................3-25
3.6.10 CURRENT LOOP SETUP MENUS.....................................................................................................3-27
3.6.11 ALARMS SETUP MENUS ..................................................................................................................3-28
3.6.12 DATA LOG SETUP MENUS...............................................................................................................3-30
3.6.13 DIAGNOSTICS DISPLAY MENUS....................................................................................................3-33
3.6.14 PRINT SETUP AND PRINT COMMANDS........................................................................................3-34
3.7 MASTER ERASE FUNCTION AND
EMERGENCY OVERRIDE PASSWORDS...............................................................3-37
3.7.1 EMERGENCY OVERRIDE PASSWORDS...........................................................................................3-37
3.7.2 MASTER ERASE FUNCTION ..............................................................................................................3-37
CHAPTER 4:
INSTALLING THE TRANSDUCERS.................................... 4-1
4.1 MEASUREMENT SITE SELECTION..........................................................................4-1
4.2 SPACING AND MOUNTING THE TRANSDUCERS................................................4-3
4.2.1 USING THE SLIDE TRACK....................................................................................................................4-4
4.3 ALIGNING THE TRANSDUCERS...............................................................................4-5

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4.4 TRANSDUCER MOUNTING METHODS...................................................................4-6
4.4.1 V METHOD..............................................................................................................................................4-6
4.4.2 W METHOD .............................................................................................................................................4-7
4.4.3 Z METHOD...............................................................................................................................................4-8
4.5 HIGH TEMPERATURE TRANSDUCER BLOCKS.................................................4-14
4.6 SONIC COUPLING COMPOUND..............................................................................4-14
4.7 NYLON (CLOTH) TIE-DOWN STRAPS...................................................................4-15
CHAPTER 5:
CALIBRATION ......................................................................... 5-1
5.1 ZERO SET CALIBRATION...........................................................................................5-1
5.1.1 PRELIMINARY STEPS FOR ZERO SET CALIBRATIONS.................................................................5-2
5.1.2 ZERO FLOW SET METHOD ..................................................................................................................5-2
5.1.3 MANUAL ZERO SET..............................................................................................................................5-2
5.2 SCALE FACTOR CALIBRATION...............................................................................5-3
5.2.1 SCALE FACTOR PRECAUTIONS .........................................................................................................5-4
5.2.2 CHANGING THE SCALE FACTOR.......................................................................................................5-4
CHAPTER 6:
CONFIGURING THE CURRENT LOOP.............................. 6-1
CHAPTER 7:
SERVICE SUPPORT AND WARRANTY.............................. 7-1
7.1 RESOLVING THE PROBLEM .....................................................................................7-1
7.2 LOCAL REPRESENTATIVE SUPPORT.....................................................................7-1
7.3 CONTACTING POLYSONICS BY PHONE................................................................7-1
7.4 FACTORY SERVICE......................................................................................................7-2
7.5 FIELD SERVICE.............................................................................................................7-2
7.6 WARRANTY ....................................................................................................................7-3

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APPENDIX A:
POLYLINK FLOWMETER DATA LINK UTILITY...........A-1
A.1 HARDWARE REQUIREMENTS................................................................................ A-2
A.1.1 PLANTCOM AND PLANTCOM PLUS................................................................................................A-2
A.2 INSTALLING AND RUNNING POLYLINK............................................................. A-3
A.2.1 RUNNING POLYLINK FROM AN IBM-COMPATIBLE PC..............................................................A-3
A.2.2 RUNNING POLYLINK FROM A DDF3088.........................................................................................A-6
A.3 REMOTE MONITORING AND CONFIGURING (VT100 MODE) ....................... A-8
A.3.1 DIAGNOSTIC DISPLAY MODE...........................................................................................................A-8
A.4 RS232 SETUP............................................................................................................... A-10
A.5 DATA LOGGER ..........................................................................................................A-11
A.5.1 TRANSFERRING A DATA LOG FILE...............................................................................................A-12
A.5.2 VIEWING A DATA LOG FILE IN STRIP CHART FORMAT ..........................................................A-12
A.5.3 DELETING A DATA LOG FILE.........................................................................................................A-13
A.6 UPLOADING SOFTWARE ON THE DDF4088 AND DDF4488 ...........................A-13
A.6.1 UPGRADING THE FLOWMETER SOFTWARE WITH POLYLINK...............................................A-14
A.6.2 INITIAL UPGRADES OF THE DDF4088 (NON-POLYLINK UPGRADE)......................................A-17
A.6.3 ENTERING THE SERIAL NUMBER FOR DDF4088 UPGRADES ..................................................A-22
A.7 GRAPHICAL SIGNAL ANALYSIS FOR THE DDF4088 AND DDF4488 ........... A-22
APPENDIX B:
PIPE SCHEDULES....................................................................B-1
APPENDIX C:
RELATIONSHIP BETWEEN SPECIFIC GRAVITY, VISCOSITY,
AND SOUNDVELOCITY FOR PETROLEUM PRODUCTS ...C-1
APPENDIX D:
FLUID SOUND VELOCITIES
AND KINEMATIC VISCOSITIES ........................................D-1
APPENDIX E:
GLOSSARY................................................................................E-1

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APPENDIX F:
CONFIGURING THE DCT SERIES FLOWMETER
WITH TimeGATE ™..................................................................F-1
F.1 THE TimeGATE ™ENVIRONMENT...........................................................................F-1
F.1.1 DEFINITIONS......................................................................................................................................... F-1
F.1.2 MOUSE OPERATION ............................................................................................................................ F-4
F.1.3 KEYBOARD OPERATION .................................................................................................................... F-4
F.2 INSTALLING TimeGATE ™..........................................................................................F-4
F.3 RUNNING TimeGATE ™................................................................................................F-5
F.4 CONFIGURING THE FLOWMETER.........................................................................F-6
F.4.1 PIPE OPTION GROUP............................................................................................................................ F-9
F.4.2 LINER OPTION GROUP...................................................................................................................... F-11
F.4.3 FLUID OPTION GROUP...................................................................................................................... F-13
F.4.4 TRANSDUCER OPTION GROUP ....................................................................................................... F-14
F.4.5 CALIBRATION OPTION GROUP....................................................................................................... F-15
F.4.6 FLOW OPTION GROUP....................................................................................................................... F-19
F.4.7 TOTALIZER OPTION GROUP............................................................................................................ F-22
F.4.8 4-20 mA CURRENT LOOP OPTION GROUP.................................................................................... F-24
F.4.9 RELAYS OPTION GROUP .................................................................................................................. F-27
F.4.10 OPTIONS GROUP............................................................................................................................... F-29
F.4.11 DISPLAY OPTION GROUP............................................................................................................... F-30
F.5 VIEWING THE FLOW DATA IN THE GRAPH TAB ............................................F-31
F.6 RS232 COMMUNICATIONS ......................................................................................F-34
F.6.1 WHEN TimeGATE™CANNOT CONNECT ...................................................................................... F-34
F.6.2 CHANGING THE BAUD RATE ON THE FLOWMETER ................................................................. F-35
F.6.3 RUNNING TimeGATE™IN AN OFFLINE SESSION....................................................................... F-36
F.6.4 COMMUNICATIONS TEST MESSAGE............................................................................................. F-36
F.7 MANUFACTURING DATA.........................................................................................F-37
F.8 MASTER ERASE FUNCTION....................................................................................F-38
F.9 UPGRADING THE FLOWMETER SOFTWARE....................................................F-40

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PRODUCT OVERVIEW
1.1 Introduction
The DCT-7088 Digital Correlation Transit Time Flowmeter is a member of the Polysonics
series of Tyme Flyte ultrasonic instruments. This microprocessor-based instrument is used
to measure the flow of clean, homogeneous liquids (liquids without large concentrations of
suspended particles or gasses such as air bubbles.) The flowmeter is non-invasive, which
means that it measures flow from outside the pipe. Its transducers can be mounted to a pipe
within a matter of minutes, and flow measurements may be made without stopping the
flow or physically contacting it in any way.
The flowmeter is configured using an integrated keypad and display for entering variables
such as pipe size, material, wall thickness, and fluid type (Chapter 3). The flowmeter
displays the flow rate and the totalized volume is either English or metric engineering
units. In addition, it can be remotely configured and monitored via the RS232 interface
mode using the PolyLink flowmeter data link utility (Appendix A). Alternatively, the
flowmeter can be configured and the signal can be graphically analyzed in a Microsoft
Windows®environment using the Polysonics TimeGATE ™utility (Appendix F).
1.2 Theory of Operation
Sound waves travel in fluids at a specific velocity depending on the type of fluid. If the
fluid is moving, the sound wave travels at a velocity equal to the sum of the speed of sound
in the fluid and the velocity of the fluid itself. A sound wave traveling in the same
direction as the fluid flow (downstream) will arrive sooner than a sound wave traveling
against the flow (upstream). The DCT-7088 transit time flowmeter operates by measuring
the difference in time required for sound waves to travel between externally mounted
downstream and upstream transducers (Figure 1-1). Based on the transit time of the two
sound waves, the flowmeter calculates the average fluid velocity.
Several variables must be taken into consideration, however. The overall velocity of the
fluid is actually made up of many individual local velocities that vary according to their
distance from the pipe wall. The velocities in the center of the pipe are higher than the
velocities near the pipe wall. The combination of these individual velocities for a specific
type of fluid within a specific pipe yield a velocity distribution known as the flow profile
(Figure 1-2). By properly configuring the flowmeter, the effects of the flow profile are
taken into consideration when calculating the mean fluid velocity. The flowmeter then
multiplies this velocity by the pipe’s cross-sectional area to obtain volumetric flow.

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Figure 1-1 Typical Transit Time System
Figure 1-2 Flow Profiles

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1.3 Transit Time Accuracy
Non-invasive ultrasonic measurements are subject to a variety of effects that can influence
measurement accuracy. All ultrasonic instruments are velocity measuring devices and only
infer volumetric flow from the operator entered parameter of pipe inside diameter (ID). As
this value is squared to get cross-sectional area, a 1% error yields a 2% error in volumetric
flow. In practice, commercially fabricated pipe seldom has ID consistency much tighter
than 1% and, unless the pipe to be measured has been miked recently, this uncertainty is
not reducible through instrument calibration.
The more sophisticated transit time flowmeters incorporate flow profile corrections to
compensate for the pipe's cross-sectional velocity profile with changing Reynolds number.
This requires, however, that the roughness of the inside of the pipe to be measured is
known. The instrument may well infer a roughness if none is entered by the operator, but
that is only a guess based on the characteristics of new pipe. Pipes can, of course,
accumulate deposits which may not only reduce the ID, but affect the roughness as well.
Errors on the order of 2% as a result of this phenomenon are not uncommon.
While other factors may influence instrument accuracy to a lesser extent, the issues
described above are the major elements of the pipe dependency of absolute instrument
accuracy. While calibration on a reference flow loop under known conditions is a useful
exercise to determine the accuracy potential of an instrument, it is not a guarantee of
absolute accuracy on different pipes under field conditions.
1.4 Operating the Flowmeter
The flowmeter must be configured and the transducers must be properly spaced and
installed in order for the flowmeter to detect ultrasonic signals and measure flow. The
flowmeter can be quickly set up for operation by following the minimal steps listed in the
Quick Setup procedure (Section 3.5). The flowmeter should also be calibrated for the
specific site if accuracy at very low flow rates is important (Chapter 5).
1.4.1 RS232 PORT
The flowmeter can be configured and monitored locally with the integrated keypad and
display or remotely through the RS232 port. RS232 communications with the flowmeter
requires an IBM-compatible PC and the PolyLink or TimeGATE ™flowmeter utilities. In
addition to remote monitoring and configuring functions, PolyLink allows data log files to
be transferred to the PC. These files can then be imported into a word processor, a
spreadsheet, or simply printed out. Refer to Appendix A for more information on PolyLink
and to Appendix F for more information on TimeGATE ™.

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1.5 Power
The DCT-7088 is a DC powered instrument that normally operates from an internal 12 volt
battery supplied with the unit. It may also be powered by one of the following sources
which connect to the 12-15 volt DC input on the breakout box:
!Battery charger/AC adapter (converts a 90 to 264 volt AC, 50/60 Hertz, 15 watt input
to a 15 volt DC output)
!Automobile cigarette lighter adapter (provides a 12 volt DC output from an automobile
cigarette lighter jack)
If the battery charger/AC adapter is connected, it simultaneously powers the flowmeter and
recharges (or maintains the charge) on the internal battery. The battery charges at a slower
rate when the battery charger/AC adapter is used to both power the unit and charge the
battery.
For more information on the breakout box, refer to Section 2.1.
1.5.1 FUSES
The design of the flowmeter includes the following 3-ampere fuses:
!One located on the front panel of the flowmeter in the upper right corner
(Figure 1-3) to protect against overcurrent or short circuits from the internal battery
!One located in the breakout box to protect against overcurrent from the output of the
battery charger/AC adapter
The fuse inside the breakout box is accessible by removing the four screws securing its
cover. Power should be disconnected prior to replacing any fuse.

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Figure 1-3 External Features of the DCT-7088

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1.6 External Features
The following is a description of the external features of the DCT-7088 (Figure 1-3):
Printer Port
The printer port provides an output for the optional external thermal printer for printing
flow data, diagnostic messages, etc. The printer port connects to a special printer cable
which has a 3-pin round connector on the flowmeter end and a DB9 connector on the
printer end. For more information on the printer, refer to Section 2.1.2.
ON/OFF Keys
The flowmeter is turned on or off by pressing these keys.
Battery Low Light
If the flowmeter is not connected to the battery charger/AC adapter, the red Battery Low
light comes on after approximately 7 or 14 hours of operation depending upon the size of
the internal battery. To protect the battery from excessive discharging, the flowmeter
automatically shuts down after approximately one additional hour. The battery must then
be recharged.
Charging Light
The yellow Charging light indicates when the battery is charging. (The flowmeter must be
connected to the battery charger/AC Adapter.) The battery charges at a slower rate when
the flowmeter is in operation. The battery cannot be overcharged.
Instrument On Light
The green Instrument On light comes on whenever the flowmeter is on (after the ON key is
pressed).
Fuse
The 3 ampere, 250 volt fuse located on the front panel protects the flowmeter from battery
overcurrent and short circuits. Another fuse with the same rating is located in the breakout
box (Section 1.5.1).

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Display
The display is a 40-character liquid crystal display (LCD). All messages, menu data, and
alarms are shown on the display. It is readable in direct sunlight and has a backlight for
viewing in low-light conditions. In addition, the contrast is adjustable. The backlight
remains on for approximately 2 minutes after the last key is pressed, then turns off to
conserve battery power. Refer to Section 3.1 for more information on the display.
Keypad
The flowmeter has a pressure-sensitive membrane keypad, which is used to access menus,
enter configuration parameters, and control the functions of the flowmeter. Refer to
Section 3.1 for more information on the keypad.
Downstream Transducer Connector and Upstream Transducer Connector
There are two BNC connectors located on the right side of the flowmeter that connect to
the upstream and downstream transducer cables. When viewing the case in the normal
opened position (Figure 1-3), the upstream connector is in the upper position and the
downstream connector is beneath it.
Breakout Box Interface Connector
The breakout box interface connector connects the flowmeter to the breakout box. The
breakout box provides a variety of functions including connecting DC voltage from the
battery charger/AC adapter to the flowmeter to charge the battery. Refer to Section 2.1 for
more information on the breakout box functions.
1.7 Software Upgrades
The flowmeter can be upgraded in the field by downloading new software into its FLASH
memory (Appendices A and F). The software version number that is installed in the
flowmeter is displayed in Menu 94. Contact the local Polysonics representative or the
factory to determine the current version available. Software updates are provided either by
notification from the factory or at the request of the user.

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1.8. Standard Configuration and Options
The standard configuration and options for the DCT-7088 flowmeter are designated by the
model code numbers listed in Table 1-1. For example, the model code DCT7088 1 B 16A
describes a flowmeter with the following options:
!8-hour battery
!Windows 95®version of the TimeGATE ™configuration and analysis program
!16 feet of transducer cable
Table 1-1
DCT-7088 Flowmeter Standard Configuration and Options
Description Model Code Number
Portable Digital Correlation Transit Time Flowmeter 1DCT-7088
TimeGATE ™Configuration and Analysis Program 1
!Windows®3.11 version 2
!Windows 95®version
A
B
Battery Duration
!8 hours 1
!16 hours 1
2
Transducer Cable Length
!16 ft (5 m) 1
!Additional cable length 316A
XXXA
Additional Options
!Ultrasonic Thickness Gauge (UTG), English units
!Ultrasonic Thickness Gauge (UTG), Metric units
!Thermal printer kit
!High temperature transducer block 4
0704/0188
0704/0187
22334-0001
20739-0001
1Standard items.
2The Windows®3.11 version of TimeGATE ™is compatibles with Windows®versions 3.1 and higher.
3Additional cable is available in increments of 10 feet to a maximum length of 1,000 feet.
4High temperature transducer blocks allow transducer mounting with pipe skin temperatures of
-40 to +470°F (-40 to +243°C).

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1.9 Technical Specifications
Table 1-2 lists the physical, performance, and functional specifications of the DCT-7088:
Table 1-2
DCT-7088 Flowmeter Specifications
Performance specifications 1
Flow range ±0 to 50 FPS (±0 to 15 MPS).
Accuracy ±0.5% of velocity or ±0.05 FPS (0.0152 MPS), typical on a calibrated
system/digital output
Sensitivity 0.001 FPS (0.3 mm per sec) at any flow rate including zero.
Linearity 0.1% of scale, digital output
Pipe size 1 to 200 in (25 mm to 5 m).
Fluid Homogeneous liquids without gas bubbles.
Functional specifications
Outputs !4 to 20 mA (into 1,000 ohms), 12 bit, isolated.
!RS232 serial interface.
Power supply Built-in lead acid gel battery, providing:
!8 hours continuous operation (standard).
!16 hours continuous operation (optional).
Keypad 19-key with tactile action.
Display 40-character, 2-line, alphanumeric, backlit LCD.
Screens include present and total flow, velocity, signal strength, and
delta T.
Data logger "65,000 data points, time stamped.
Programmable in 1-second intervals.
Temperature 2Instrument: -5 to +140°F (-20 to +60°C).
Transducers: !-40 to +300°F (-40 to +150°C), standard.
!-40 to +470°F (-40 to +243°C, when using optional high-
temperature transducer blocks.
Physical specifications
Transmitter NEMA 6 (IP67), waterproof against accidental immersion and splashproof
with lid open.
Transducers Encapsulated design.
Standard cable length: 16 ft (5 m).
Transmitter weight Approximately 11 lbs (4.9 kg) with standard 8-hour battery.
Approximately 15 lbs (6.8 kg) with optional 16-hour battery.
1Performance specifications are established under reference conditions.
2Consult factory for higher operating temperatures than those listed.

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SYSTEM COMPONENTS
2.1 Breakout Box Components
The breakout box components are illustrated in Figure 2-1. The breakout box connects the
flowmeter through the 7-pin circular breakout box connector . The breakout box
provides an interface for the following connections:
!15 volt DC power input from the battery charger/AC adapter (Section 1.5)
!6 volt DC output cable for charging the printer battery (Section 2.1.2)
!RS232 serial port for transferring data log files, for providing connection to a remote
terminal, and for other computer applications (Appendices A and F)
!4-20 milliampere current loop output terminals (Chapter 6)

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Figure 2-1 Breakout Box Components

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2.1.1 BATTERY CHARGER/AC ADAPTER
The battery charger/AC adapter has a removable AC power cable and converts 110-250
volt AC to 15 volts DC. The DC power output cable connects to the breakout box at the
DC input connector .
When connected to the breakout box, the battery charger/AC adapter performs the
following functions:
!Charges the flowmeter battery through the 7-pin circular connector
!Provides immediate power to operate the unit if the battery is discharged
!Provides voltage to charge/power the printer as required
!Provides the driving voltage for the 4 to 20 mA current output if configured to drive the
loop.
2.1.2 PRINTER
An optional external thermal printer is available for use with the flowmeter for printing
flow data, diagnostic messages, etc. For complete printer operating instructions, refer to
the instruction manual supplied with the printer.
Charging the Printer Battery
The printer battery is charged by connecting the printer to the printer power cable on the
breakout box (when the battery charger/AC adapter is connected).
CAUTION:
Note the following precautions:
!The printer battery charge time for a fully discharged battery is 15
hours. To avoid damage to the battery, do not charge for more than
24 hours.
!Do not connect the battery charger/ac adapter directly to the printer
to charge the printer battery. The voltage and polarity output of the
charger do not match the required input of the printer. If they are
directly connected, the printer battery can explode or the printer can
be seriously damaged.
Printing Procedure
To print from the flowmeter:
1. Connect the printer cable from the serial port on the printer to the printer port on the
upper left of the flowmeter’s control panel (Figure 1-3).
NOTE: The printer port on the panel is covered with a protective metal cap.)
2. Follow the procedures for using the print menus in Section 3.6.14.

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2.2 Slide Track
The transducer slide track (Figure 2-2) comes standard with the DCT-7088. In many
applications, the slide track allows the user to accurately space the transducers before
mounting them as a single assembly on the pipe. Refer to Section 4.2.1 for procedures and
limitations related to the slide track.
Figure 2-2 Slide Track