GPI QME10 User manual

Portable
Fixed and Portable
Ultrasonic Flowmeter (UFM)
Owner’s Manual
SAVE THESE INSTRUCTIONS
TABLE OF CONTENTS
Key Aspects of QStar UFM.......................................... 3
Approvals/CE............................................................... 3
Measuring Principle..................................................... 3
QStar Fixed UFM and Components ............................ 4
QStar Portable UFM and Components........................ 8
Operating................................................................... 10
Getting Started .......................................................... 10
Preparing for Measurement....................................... 13
Measuring with UFM.................................................. 15
Setup Parameters...................................................... 15
Measuring Windows .................................................. 31
Calibration .................................................................44
System Settings......................................................... 44
Troubleshooting......................................................... 46
Software Update........................................................ 53
Fluid Properties ......................................................... 54
Specications ............................................................ 56
920222-0105/13
Fixed

2
QSTAR FIXED AND PORTABLE UFM OWNER’S MANUAL
Text identied with an exclamation mark contains important information that relates to the basic data
and operation of the device.
iText identied with the letter “i” contain supplementary and helpful information.
FIXED UFM PORTABLE UFM
Text contained within this box applies specically
to the QStar FIXED UFM. If you have a PORTABLE
UFM, skip this section and go to the text with no
border, or the text in the PORTABLE UFM box.
Text contained within this box applies specically
to the QStar PORTABLE UFM. For a FIXED
UFM, skip this section and go to the text with
no border, or the text in the FIXED UFM box.
FIXED UFM
PACKAGE INCLUDES:
• Transmitter
• Ultrasonic transducers
•Spacer bar for the ultrasonic transducers
(for types F10/F21)
•Stainless steel mounting belts
• Getting Started (“Quick-start”) manual
• USB drive with Owner’s Manual
• Ultrasonic coupling grease
Other ultrasonic transducers for smaller or larger pipe
dimensions, as well as clamp-on temperature sen-
sors, are available on separate order. Contact GPI at
www.GPImeters.net or toll-free [phone].
PORTABLE UFM
PACKAGE INCLUDES:
• Hard-shell case
• QStar Portable ow transmitter
• Plug-in power adapter, plus IEC appliance power
cable
• Transducer cables
• Ultrasonic transducers
• Spacer bar for the ultrasonic transducers
• Cable for the 4 mA to 20 mA analog output (Mini
DIN, alligator clips)
• Digital output cable for the relay/pulse output
(Mini DIN, alligator clips)
• USB cable
• Stainless steel mounting chains (up to 16 in.)
• Getting Started (“Quick-start”) manual
• USB drive with operating instructions
• Ultrasonic coupling grease
• Measuring tape
Other ultrasonic transducers for smaller
or larger pipe dimensions and clamp-on
temperature sensors, are available
on separate order. Contact GPI
at www.GPImeters.net or
toll-free [phone].
TEL: [phone] • 973-940-1684 • FAX: [phone] • www.GPImeters.com

3
KEY ASPECTS OF QSTAR UFM:
• Fixed or Portable system for measuring liquids in lled
piping systems.
• Uses the ultrasonic transit-time differential method.
• Heat measurement is included as standard application.
Clamp-on Fixed and Portable temperature sensors
are optional.
• Portable UFM can be operated in battery-powered
mode and on a power adapter for operation with 100%
duty cycle. Fixed UFM can be operated on a power
adapter.
• Supports measurements on piping with diameters
from 1/2" to 240" (depending on the sensor used).
• The uid to measure may have a temperature range
from -40° F to +300° F (depending on the transducer
used).
• You can save the measuring data to the internal
SD card, read the data via USB port and export this
data using Microsoft® ofce software such as Excel
(Portable UFM only).
• The device is equipped with an electrically isolated
relay output and two 4mA to 20mA current outputs
that can be operated in active and passive mode.
APPROVALS/CE
QStar UFM is compliant with the following
European Directives and Standards
Test Specications
DIN EN 55011 B (11/2007)
DIN EN 61000-4-2 (09/2008)
DIN EN 61000-4-3 (06/2008)
DIN EN 61000-4-4 (07/2005)
DIN EN 61000-4-5 (06/2007)
DIN EN 61000-4-6 (10/2008)
DIN EN 61000-4-8 (12/2001)
DIN EN 61000-4-11 (02/2005)
Test Requirements
DIN EN 61000-6-1 (10/2007)
DIN EN 61000-6-3 (09/2007)
ULTRASONIC MEASURING PRINCIPAL
FIGURE 1: Measuring Principle
TEL: [phone] • 973-940-1684 • FAX: [phone] • www.GPImeters.com

4
The UFM employs precise, ultrasonic transit-time dif-
ferential method. This method involves installation of
two ultrasonic transducers on the surface of the piping
and their interconnection with the electronic evaluation
system. The ultrasonic transducers operate in alternating
mode as transmitter and receiver with cyclic exchange of
ultrasonic signals. Measurements cover the transit times
of the upstream and downstream signals (t1, t2). The UFM
measures the transit-time differential of the ultrasonic
signals t1 and t2 that travel upstream and downstream.
These signals are accelerated (t1) or retarded (t2). The
difference that develops between both signal transit times
is proportional to ow velocity and is used in combination
with the piping geometry data for precise calculation of
the volumetric owrate.
FIXED UFM AND COMPONENTS
α
cos221
)12(
⋅⋅
−
=
TT
TT
Lv
Calculation of ow velocity [m/s]
π
α
⋅⋅
⋅⋅
−
=
4cos221
)12( 2 D
TT
TT
LQ
Calculation of owrate [m3/s]
The ow transmitter uses a sophisticated cross-correlation
to detect signals. This ensures a reliable detection of
signals even in case of harsh circumstances like gas
and/or particle load.
FIGURE 2: UFM – with Mounted Ultrasonic Transducers (Bottom)
and Flow Transmitters
The UFM consists of the ultrasonic transducers and the
ow transmitter that are mounted onto piping.
FLOW TRANSMITTER
FIGURE 3: Flow Transmitter
The ow transmitter processes the signals and makes
the measurement results available to the user.
ULTRASONIC TRANSDUCERS
The ultrasonic transducers are mounted onto the pip-
ing and transmit and receive the ultrasonic signals
that are used in the ow transmitter to calculate the
volumetric owrate.
Ultrasonic transducers:
QMF-F10 (1 MHz) for pipe diameters 1.25" to 16"
QMF-F21 (2 MHz) for pipe diameters 3/8" to 4"
Operating temperatures: -40° F to 300° F
FIGURE 4: Ultrasonic Transducers (F10/F21) typically
used with Spacer Bar (not shown)
Ultrasonic transducer:
QMF-F05 (0.5 MHz) for pipe diameters 8" to 240"
Operating temperatures: -40° F to 180° F
(300° F optional on request)
FIGURE 5: Ultrasonic Transducers (Type F05)
TEL: [phone] • 973-940-1684 • FAX: [phone] • www.GPImeters.com

5
MOUNTING MATERIAL AND
ACCESSORIES
Signal cables
Signal cables are a part of the ultrasonic transducers
and cannot be separated from transducers.
Spacer bar for transducer mounting
For transducers F10 and F21 (Transducer QMF-F05
is mounted on pipes using textile tape rather than
spacer bar).
FIGURE 6: Spacer bar
Metal Mounting Belt for Transducer
Mounting
FIGURE 7: Mounting Belt (Stainless Steel)
FIGURE 8: Transducers Mounted with Spacer Bar and
Mounting Belts
Coupling grease
Apply the ultrasonic coupling gel between the ultra-
sonic transducer and the piping in order to optimize
signal input.
QMF-PT100 Temperature sensors
The clamp-on temperature sensors collect tem-
perature data in heating and cooling circuits.
This data is then used to calculate heating and cooling
quantities.
FIGURE 9: Clamp-on temperature sensors, QMF-PT100
(optional)
FIGURE 10: QMF-PT100 (optional) Temperature Sensor
Mounted with Metal Belt
Interfaces of UFM
Open the cover to access the connecting terminals.
FIGURE 11: Front view of transmitter showing cover
Cover
Remove
Screws
FIXED UFM AND COMPONENTS (Continued)
TEL: [phone] • 973-940-1684 • FAX: [phone] • www.GPImeters.com

FIXED UFM AND COMPONENTS (Continued)
6
1 RS232/RS485 Interface boards
Digital Interface boards RS232 or RS485 are
available as an option to provide digital com-
munication via ASCI strings.
2 Input for temperature sensors
QMF-PT100 (3-wire)
The two temperature sensors (feed and return
pipe) can be connected in order to measure
heat/thermal output. The ow transmitter always
includes the capability for heat/thermal output
measurement. Note that (if required by customer)
the QMF-PT100 inputs can also be used to reset
the counters. If you use this reset function you
cannot measure heat/thermal output at same
time.
3 Relay output (potential-free)
This output is potential-free NO (normally open)
relay output. Use this output to establish an
alarm (for example, when exceeding a certain
ow speed).
4 Analog output 4-20mA (active)
The 4-20mA outputs can be used to submit
measurement data like ow, thermal output and
velocity to the Programmable Logic Controller
(PLC). These outputs are in active mode (supply
voltage provided internally by ow transmitter).
5 USB- Interface
Used for rmware updates. Standard USB (micro
USB)- cable required to connect to a PC.
+ - (DC)
UP1 DN1 UP2 DN2 RS232/ 485
QMF-
PT100
QMF-
PT100 Relay OUT2 OUT1 DO1 DO2 Reset Power
+ - - - - - + --
1 2 3 4 5 6 7
WW WW
6 Hardware Reset
Used to reset unit (for hang-ups).
7 Power Supply
Location for connecting the supply voltage. QStar
UFM is available as AC (90-240VAC) and DC
(18-36VDC) version.
CONNECTOR BOARD
FIGURE 12: Connecting Terminals
Always use the correct voltage for the UFM.
Improper supply voltage might seriously
damage the ow transmitter. Check the type
of power supply on the name plate (printed
on right side of enclosure of ow transmitter.
CAUTION
Wiring
The connection terminals are located under the lower
cover. Remove the two screws and plastic cover to
gain access to the connection terminals.
FIGURE 13: Accessing the Connection Terminals

FIXED UFM AND COMPONENTS (Continued)
7
iUse cables with 16-26AWG wires. Wires should
be stripped about .5 in. to allow proper contact
to terminals.
.5".015" - .030"
Put the stripped end of the related wire into the
related hole. Wires will be held by spring. It might
be helpful to use end sleeves or tin the wire ends.
FIGURE 14: Connection Terminals – Fasten Cables
Use a slotted screwdriver to unfasten wires, then press
middle part between the two holes as shown to loosen
the spring and remove the wires.
FIGURE 15: Connection Terminals - Unfasten Wires
AC TERMINAL BLOCK WIRING
PE NL1BLACK
US EUROPE
WHITE
GREEN
BROWN
BLUE
GREEN/YELLOW
Terminal Diagram
Terminals
Designation
UP1
Connection of upstream transducer
Red wire to be connected to +
Black wire to be connected to -
DN1
Connection of downstream transducer
Red wire to be connected to +
Black wire to be connected to -
UP2
Connection of upstream transducer
(path2)
Red wire to be connected to +
Black wire to be connected to -
DN2
Connection of downstream transducer
(path2)
Red wire to be connected to +
Black wire to be connected to -
RS485 Optional Interface board
QMF-
PT100
Connect temperature sensors
(measuring colder temperature) to left
QMF-PT100 terminal
WH = White wire from QMF-PT100
RD = Red wire from QMF-PT100
QMF-
PT100
Connect temperature sensors
(measuring warmer temperature) to
right QMF-PT100 terminal
WH = White wire from QMF-PT100
RD = Red wire from QMF-PT100
Relay Relay output, external voltage required
OUT1 Analog output1, 4…20mA, active, volt-
age provided internally
OUT2 Analog output2, 4…20mA, active, volt-
age provided internally
DO1 Digital output (Transistor), passive
mode, external voltage required.
DO2 Optional, Digital output 2
Power
Supply
Either DC (18-36VDC) or AC (90-
240VAC). Check order conrmation
or name plate on ow transmitter for
operating voltage.
• The 4-20mA outputs are set in active mode.
That means the required voltage is provided
by ow transmitter internally. DO NOT USE
additional external voltage.
• The digital output is set in passive mode and
requires external voltage to be operated.
• Relay is rated to max. 45V, 0.25mA. These
values must not be exceeded.
CAUTION

PORTABLE UFM AND COMPONENTS
8
PORTABLE FLOW TRANSMITTER
Your UFM consists of the ultrasonic transducers and
the ow transmitter that are mounted onto your piping.
The ow transmitter processes the signals and provides
the measurement results.
FIGURE 16: PORTABLE Flow Transmitter (Top) and
Mounted Ultrasonic Transducers (Bottom)
ULTRASONIC TRANSDUCERS
The ultrasonic transducers mount onto the piping to
transmit and receive the ultrasonic signals used in the
ow transmitter to calculate the volumetric owrate.
Ultrasonic transducer QMP-F21
(2 MHz), RED housing, for pipe
diameters from 0.5 to 4.0 inches.
Operating temperatures: -40° F to
300° F
Ultrasonic transducer QMP-F10
(1 MHz), BLUE housing. Pipe diam-
eters: 1.5 to 16 inches. Operating
temperatures: -40° F to 300° F
Ultrasonic transducer QMP-F05
(0.5 MHz), GREEN housing. For
pipe diameters from 8 to 240
inches. Operating temperatures:
-40° F to 176° F (300° F optional
on request)
MOUNTING MATERIAL AND
ACCESSORIES
Signal cables
Spacer bar for transducer mounting
For QMP-F10 and QMP-F21 (QMP-F05 is mounted
on pipes using textile tape rather than spacer bar).
FIGURE 17: Spacer bar
Chains for Transducer Mounting
FIGURE 18: Mounting Chain (Stainless Steel)
FIGURE 19: Transducer QMP-F05 (500 kHZ) for large
pipes – Mounting with textile tape.
Coupling grease
Apply the ultrasonic coupling gel between the ultrasonic
transducer and the piping to optimize signal input.

PORTABLE UFM AND COMPONENTS (Continued)
9
QMP-PT100 Temperature sensors
(Optional)
The clamp-on temperature sensors collect tem-
perature data in heating and cooling circuits.
Use this data to calculate heating and cooling quantities.
FIGURE 20: QMP-PT100 clamp-on temperature sensors
4-20mA analog output cable
The analog output cables can be used to connect an
external data logger or recorder to the ow transmit-
ter for the transmission of measured values such as
owrates, or thermal output.
Cable for Relay/Pulse
The relay connecting cable can be used to trigger
alerts. For example, when exceeding a certain owrate.
Power adapter 100-240V, 47-63Hz, 1A
The power adapter is normally used to charge the
battery. Your UFM supports permanent operation by
using the power adapter.
FIGURE 21: Back view of Portable UFM connections
1 Power Input
This jack is used to connect the plug-in power
adapter that is included with the UFM package.
2 USB Interface (Mini.USB Type B)
Enables access to the integrated SD memory
card from a PC. This card is used to store data
logging information and measurement data (LOG
les). Windows XP or later versions detect the
internal SD Card as mass storage medium. No
need to install additional drivers.
3 Hardware Reset
Use a small screwdriver (or paper clip) to
press the reset button.
4/5 BNC Inputs for Ultrasonic
Transducers
Jacks for the ultrasonic transducers.
6 Relay/Pulse Output (4-Pol Mini DIN)
Electrically isolated output with NO (normally
open) contact. This internal NO contact is open
unless an actuating signal is generated. Allows
user to assign alarm or threshold limit functions
to this output.
7 Input for Temperature Sensors
QMP-PT100 (6-Pole Mini DIN)
Receptacle for the optional temperature sen-
sors that enable the use of the internal heat
measurement function of the UFM.
8 4-20mA Analog Output
(5-Pol Mini DIN)
These outputs can be assigned variables such
as the owrate and return a current that is
proportional to the value of the variables. The
outputs operate in active (power provided by
ow transmitter) 2-wire mode.
Impulse OUT
Reset Down Up Relays/ T1/T2Analog OutUSBPower
QMP-001
1234 56
78

10
HOW TO NAVIGATE
Use the corresponding multifunctional buttons:
Arrow buttons for
navigation
ENTER Conrms entry
NEXT Conrms entries and opens the next window
BACK Returns to the previous window
+Increases the value
–Reduces the value
XYZ Activates a certain function (depending on
chosen menu)
No function
GETTING STARTED
BASIC SETTINGS, MAIN MENU,
NAVIGATION
Setting Language
1. Switch on the device. During the start sequence, press
the multifunctional button that is located next to the
“SETUP” eld.
SAFETY INSTRUCTIONS
• The ow transmitter cannot be operated outside the
temperature range from -4° F to 140° F.
• The ultrasonic transducers are sensitive to mechanical
stress such as impact and vibration.Always safeguard
the transducers against strong vibration or impact to
avoid damage or destruction.
• The plug-in power supply is suitable for in-door use
only.
• The plug-in power adapter or the power cable must
be replaced completely in the case of mechanical or
electrical damage.
• The ow transmitter is not approved for operation in
hazardous locations. The standard ultrasonic trans-
ducers are not approved for operation in hazardous
locations.
• The ultrasonic transducers may not be operated
outside their specied uid temperatures.
OPERATING
CONTROL BUTTONS
1. Turns on Portable transmitter. Fixed transmitter will
automatically start when connected to voltage supply.
2. Switches the backlight On and Off.
3. Multifunctional buttons: Use this button to select the
function that is displayed next to it on the screen.

11
2. Conrm the “SETUP LANG.” button
3. Use the arrows in the next window to select the dialog
language. Conrm entry with “Enter”. Exit the menu
with “SETUP.”
The language setting selects the language used
in the menus. The language in the elds next to
the multifunctional button remains unchanged.
CAUTION
Navigation in Main Menu “Flow 1”
The “Flow 1” measuring window is automatically opened
with a delay of a few seconds after turning on the power.
The “Flow 1” measuring window provides an overview
of all data that is necessary for ow and optional heat
measurements.
1. Select “Setup”
2. Select “COMPL Setup” when window appears.
You are now in the main menu. Select all necessary
functions of the device in this menu.
To return to the measuring window, proceed as follows:
Select “ESC” -> “MEAS” in the next window.
iTo accelerate access to the main menu after
power on, select the start sequence “SETUP.”
Select “COMPL SETUP” in the next window.
Setting the Time and Date
After selecting the dialog language, the setup menu opens.
1. Scroll the “System Setup” menu command using the
arrow keys.

APPLIES TO PORTABLE QSTAR
12
2. Select the “Time and Date” menu command
Time
Displays the current time (system time). The time stamp
that is derived from the system time will be applied to
the measurement data.
SD memory
Displays the free space on the internal SD memory
card of the device (standard is 2 GB).
Backup battery
Provides information about the status of the recharge-
able battery.
•Load: The device is powered using the power
adapter while the battery is charged. The empty
battery needs a charging time of approximately ve
hours.
•Full: The battery is in a charged state. The device
may be operated for approximately ve hours when
the display backlight is switched off or for approxi-
mately three hours when it is switched on.
Percentage display
Displays the charging state of the battery.
The times specied applies to a new battery. The factual
operating/load cycles may deviate from the specied
time values.
The status bar is located in the uppermost row of the display.
3. Enter the time as: Hour (hh): Minute (mm): Second (ss).
Enter the date as: Month (mm): Day (dd): Year (yy).

13
PREPARING FOR MEASUREMENT
The following section elaborates on essential aspects that must be taken into account for successful
owrate measurements.
STRAIGHT RUN REQUIREMENTS
The selection of the mounting location has a signicant impact on measurement quality. The
charge and discharge areas listed in the following table should be taken into account.
FIGURE 22: Straight run requirements

14
TRANSDUCER MOUNTING POSITIONS
Mounting Ultrasonic Transducers
The pipe must always be lled completely
at the mounting positions of the ultrasonic
transducers. It is not possible to take
measurements on partially lled pipe.
CAUTION
The ultrasonic transducer can be operated in any mount-
ing position. However, conforming with the mounting
positions shown below is mandatory. The drawing shows
the side view of the piping.
Mounting Ultrasonic Transducers On
Horizontal Pipe
FIGURE 23: Preferable mounting positions for ultrasonic
transducers (1)
On horizontal piping, mount the transducer with an offset
of about +/-45% to the horizontal plane. Otherwise, there
is a risk of the accumulation of bubbles in the upper sec-
tion and sedimentation in the lower section of the pipe.
FIGURE 24: Preferred mounting positions for ultrasonic
transducers (2)
UFM uses the cross section of the pipe to calculate
the ow. The cross section is calculated from the inner
diameter setup (user setting). If there is sedimentation
in the pipe, which decreases the real inner diameter, a
small amount of uncertainty may result. The same hap-
pens when the inner diameter is not known/estimated.
π
α
⋅⋅
⋅⋅
−
=
4cos221
)12( 2 D
TT
TT
LQ
iTo measure pipes with unknown wall thicknesses
a wall thickness gauge is avaiable from GPI. Ask
GPI Customer Service Representative for more
information or visit www.GPImeters.net.
Ultrasonic Transducers On Non-Planar
Surface
Never mount the transducers on non-planar surfaces such
as welding seams or deformations. Always try to remove
thick and uneven protective paint coating from the piping
area where the ultrasonic transducers will be mounted.
Mounting Ultrasonic Transducers
Following are the options for mounting the ultrasonic trans-
ducers. The V-mode is standard for most applications.
V-Mode
FIGURE 25: Mounting of transducers in V-mode
Transducer 1 Transducer 2
In the V-mode, both ultrasonic transducers are mounted
onto the same side of the pipe. This mode is the standard
for small and medium pipe dimensions. The ultrasonic
signals are reected from the pipe wall.

15
W-Mode
FIGURE 26: Mounting of Transducers in W-Mode
Transducer 1 Transducer 2
The W-mode is a special method for mounting the ultra-
sonic transducers. This method is usually employed on
very small pipes.
Z-Mode
FIGURE 27: Mounting of Transducers in Z-Mode
Transducer 1
Transducer 2
The Z-mode is a special method for mounting the ul-
trasonic transducers. The signal is transmitted across
a shorter distance with this installation method. Use for
measuring large-scale piping systems, or where the sys-
tem is lled with heavily contaminated or gas-loaded uid.
MEASURING WITH UFM
5 Steps to Flow Measurement:
• Select a suitable location for mounting the ultrasonic
transducers
• Setup the UFM pipe parameters
• Mount the ultrasonic transducers onto the piping
• Perform a zero calibration
• Start the ow measurement
SETUP PARAMETERS
Ths section denes the input of all data that is necessary
for ow measurement.
• “QUICK SETUP”: The Quick Setup guide offers step-
by-step instructions on the essential tasks required to
setup parameters.
• “COMPL SETUP”: The complete setup function
enables access to all options and expert settings.
WHAT NEEDS TO BE SETUP
• The pipe’s outer diameter or circumference.
• The wall thickness of the pipe. The material and thick-
ness of the pipe lining, if such lining exists.
• The pipe material
• The uid
•The type of ultrasonic transducers
•The mounting mode for the ultrasonic transducers
iUltrasonic measurement is based on the signal
transit time process. The ultrasonic signals
penetrate the piping and the uid. In order to
calculate the signal transit time, each uid, pip-
ing material and existing lining will be assigned a
sonic speed value, as well as the pipe diameter
or circumference value. The tabular database
species the sonic speed values for the materials
and uid. The sonic speed for materials not listed
in the tables must be entered manually. Tables
that list additional sonic speed parameters for
different materials are available in the back of
these operating instructions.
TEL: [phone] • 973-940-1684 • FAX: [phone] • www.GPImeters.com
TEL: [phone] • 973-940-1684 • FAX: [phone] • www.GPImeters.com

16
USING QUICK SETUP
Accessing the setup dialog:
After power on: Select “Setup” -> “Quick Setup” within the start sequence.
In the primary measuring window “Flow 1”: Select “Setup” -> “Quick “Setup.”
Enter the kinematic viscosity of the uid:
Specify whether to enter
the pipe circumference
or outer diameter.
Enter the outer diameter
Enter the pipe’s wall thickness
Enter the outside
circumference
1
2
START
i
Use a wall thickness
meter if wall thickness
is unknown, or
consult published
pipe standards.
OR

17
3
4
OR
OR5
Choose pipe material
Does the pipe have a lining YES/NO?
YES. Enter the thickness of the lining.
NO
Select the database,
or user input if a
material is not listed
in the database.
USING QUICK SETUP (CONTINUED)

18
5
Select the uid:
Choose lining material from
the database.
Enter speed of sound of
user-dened coating.
OR
OR
Enter the kinematic
viscosity of the
medium:
USING QUICK SETUP (CONTINUED)

19
6
7
Enter the thermal
capacity of the uid:
Enter the density
of the uid:
Select a suitable ultrasonic transducer:
Select a suitable mounting mode:
i
For information on suitable
transducers for specific
pipe dimensions, refer to
section “QStar UFM and
Components.”
i
For information on suitable
transducers for specific
pipe dimensions, refer to
section “QStar UFM and
Components.”
Output of the distance between the
ultrasonic transducers:
iThe distance between
transducers is specified in
inches and always measured
between the faces of
transducers 1 and 2. These
dimensions are not the same
for each mounting mode.
8
END
USING QUICK SETUP (CONTINUED)

APPLIES TO FIXED UFM
20
MOUNTING DISTANCE
The distance between the ultrasonic transducers is always
measured between their opposing surfaces in all mounting
modes. After setting up the measuring point, the ow trans-
mitter displays the distances that have to be set up using a
measuring tape. When using a spacer bar in the V-mode,
position the transducers conveniently using the spacer bar.
V-mode and W-mode
FIGURE 28: Mounting of ultrasonic transducers V-mode
V
t1t2
Ultrasonic Transducer
Mounting
Distance
FIGURE 29: V-Mode or W-Mode with Spacer Bar
FIGURE 30: V-Mode Mount with Fabric-Reinforced
Tensioning Tapes for Large Pipe Diameters
Installation at Z-Mode
FIGURE 31: Mounting of ultrasonic transducers (Z-mode)
Transducer 1
Transducer 2
Distance
FIGURE 32: Mounting of ultrasonic transducers in Z-mode
using mounting belts