Greyline TTFM 6.1 User manual

www.greyline.com
USER'S GUIDE
Installation & Operation
Instructions
Transit Time Flow Meter
Model TTFM 6.1
Manual Series A.1.6

Note: This page has been left blank intentionally.

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TTFM 6.1 Transit Time Flow Meter
INDEX
CONNECTIONS ......................................................................................................................................4
KEYPAD SYSTEM..................................................................................................................................6
MENU SYSTEM......................................................................................................................................7
ICONS ......................................................................................................................................................8
MESSAGE ICON .....................................................................................................................................9
STATUS ...................................................................................................................................................9
PASSWORD...........................................................................................................................................11
MENU SELECTIONS............................................................................................................................ 11
UNITS/MODE........................................................................................................................................ 12
SET UP ................................................................................................................................................... 14
CALIBRATION .....................................................................................................................................17
RELAY PARAMETERS........................................................................................................................ 19
DATA LOGGING ..................................................................................................................................20
COMMUNICATION (OPTIONAL) ......................................................................................................22
SPECIAL FUNCTIONS......................................................................................................................... 24
TYPICAL SENSOR INSTALLATION.................................................................................................. 27
SENSOR MOUNTING........................................................................................................................... 30
2 OR 4 CROSS INSTALLATION OVERVIEW - TMK-B1 KIT.......................................................... 31
1 CROSS INSTALLATION OVERVIEW – TMK-B1 KIT................................................................... 35
2 OR 4 CROSS INSTALLATION OVERVIEW - TMK-B21 OR TMK-B22 KIT................................42
1 CROSS INSTALLATION OVERVIEW – TMK-B21 OR TMK-B22 KIT ........................................46
SENSOR MOUNTING/COUPLING RECOMMENDATIONS ............................................................ 53
ENCLOSURE INSTALLATION ........................................................................................................... 54
FIELD TROUBLESHOOTING..............................................................................................................55
COMMON QUESTIONS AND ANSWERS..........................................................................................58
APPLICATIONS HOTLINE.................................................................................................................. 60
PRODUCT RETURN PROCEDURE ....................................................................................................60
SPECIFICATIONS................................................................................................................................. 64
APPENDIX A - CONVERSION TABLE ..............................................................................................65
PIPE CHARTS........................................................................................................................................66
APPENDIX C – LIQUID SPEED OF SOUND...................................................................................... 71
APPENDIX D......................................................................................................................................... 78
IMPORTANT NOTE: This instrument is manufactured and calibrated to meet product specifications. Please read this
manual carefully before installation and operation. Any unauthorized repairs or modifications may result in a suspension of
the warranty. If this product is not used as specified by the manufacturer, protection may be impaired.
Available in Adobe Acrobat pdf format

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TTFM 6.1 Transit Time Flow Meter
CONNECTIONS:
POWER INPUT: The standard model requires AC power input between 100 to 240 VAC 50/60Hz
10VA. No adjustments are necessary for voltages within this range. Connect L (Live) N (Neutral) and
AC Ground.
Optional DC input model requires 9-32 VDC/10 Watts. Connect to + and - terminals.
Optional Thermostat and Heater modules are available rated for specifically 115 VAC or specifically
230 VAC.
IMPORTANT NOTE: To comply with electrical safety standards, AC power input and relay connection
wires must have conduit entry to the instrument enclosure. Installation requires a switch, overcurrent
fuse or circuit breaker in the building (in close proximity to the equipment) that is marked as the
disconnect switch.
Risk of electric shock. Loosen cover screw to access connections. Only qualified personnel
should access connections.
Note: Use of instrumentation over 40°C ambient requires special field wiring.
Note: Some models feature a user replaceable fuse. Fuse is 2 Amp 250V (T2AL250V), located on the
power supply.

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TTFM 6.1 Transit Time Flow Meter
100-240 VAC Meter CONNECTIONS

Page 6
TTFM 6.1 Transit Time Flow Meter
KEYPAD SYSTEM
The diagram on page 7 shows the TTFM 6.1 menu system. Arrows show the four directions to leave a
menu box. Pressing a corresponding keypad arrow will move to the next item in the direction shown.
Move the cursor (highlighted) under numerals and increase or decrease numerals with the and 
keys.
To store calibration values permanently (even through power interruptions), press the button.

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TTFM 6.1 Transit Time Flow Meter
MENU SYSTEM
--Messages----------
LData og Logging
dLog Use 0.00000%
Sensor Good
--24 hr log----------
Date Feb. 12/20  10
Total 50138 USG
34.82 USG/mAverage
52.20 USG/mMaximum
11:08:00Max Time
0.000 USG/mMinimum
9:15:00Min Time
--Menu--------------
Units / Mode 
Setup
Calibration
Relay Parameters
Data Logging
Communication
Special Functions
Simulation
Configuration
USG/m
Tot 20130 USG
Relays 1 2 3 4 5 6
0.00
*
* Menu only appears if "New Password" has been
changed from 0000 in "Special Functions" menu.
--Password----------
Password 0000
--Status------------
Velocity ft/s  0.00
Flow 0.00 USG/m
Min Flow 4.00 USG/m
Signal Strength 100%
Exp. SOS 4900 ft/s
Meas. SOS 4900 ft/s
--Data Logging-------
Log Site ID 01 
Mode Flow
File Format .LG2
Date 6 7Jun 2 /201
Time 12:28:41
Interval 30sec
Data Log Logging
--Relay Parameters--
Relay 1 
Function Flow
On 1000 USG
Off 0.000 USG
--Simulation--------
 Test Actual
Flow /m250USG
Flow4-20mA 5.60mA
Relays 1 2 3 4 5 6
--Configuration-----
Serial# 12345
Utility 1.25.0.16
1.Transit Time 38.1
CommBoard 1. .21 19
Relays 2
Analog Out 1
--Communication-----
Protocol Modbus
Address 001
BPS 9600
Parity Even
Stop Bits 1
--Special Functions-
Language English 
Analog Out 4-20mA
Backlight High
Reset Totalizer NO
Neg. Totals NO
Rev. Flow OFF
Capture Par NO
Capture WF NO
Restore Defaults NO
New Password 0000
-- -------
Setup------
r SE16B  Senso
Angle 37 °
Fluid Water
Temp Mode Fixed
Temp 77.0 F
Pipe PVC
OD 4.5000 in
Wall 0.2500 in
Lining None
Crossings 2
Zero Tare No
Sens Space 2.299in
Velocity 0.00 ft/s
Signal
Strength
100
%
--Calibration-------
Mode Flow 
20mA 500.00 USG/m
4mA 0.00 USG/m
LOS Time 10 sec
Min Flow
4.00 USG/m
Damping
Mode FIR
Percent 10%
Window 1.0 ft/s
Cal Constant 1.00
--Units/Mode--------
Mode Flow 
Linear in
Volume USG
Multiplier x1
Decimal 0s
Velocity ft/s
Flow USG/m
Decimal 2s
emperature
T F
optional features

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TTFM 6.1 Transit Time Flow Meter
ICONS
1.
1.
2.
2.
Message waiting. Press .from main page to view
Data logging .off
Data logging .on
1.
1.
2.
2.
3.
3.
4. USB file download .ing
File download completed.
Download Error.
TTFM Echo OK.
TTFM - , Empty Pipe .Low Signal / No Echo or high Aeration
TTFM - No Sensors Attached / Wrong Settings

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TTFM 6.1 Transit Time Flow Meter
MAIN DISPLAY
The Main Display shows the units selected from the Units/Mode menu, flow rate
or velocity rate being measured, totalizer, totalizer multiplier, and relay states. The
TTFM 6.1 will go to this display after start-up.
MESSAGE ICON
Press from the Main Display to view status of the data logger and
error/warning messages provided by the instrument. The Message Icon will
appear on the Main Display if error messages are being generated by the
instrument. Press to return to the Main Display.
STATUS
Press from the Main Display to view Status of the measurement. Press to
return to the Main Display.
Velocity Displays flow velocity in ft/s or m/s, selected in the
Units/Mode menu.
Flow Displays flow rate in units selected in the Units/Mode
menu. A list of flow rate units is provided in the
Units/Mode section of the manual.
Min Flow Displays a read-only value for the minimum flow cutoff,
in units which match the Flow selection. Measured flow
rates below the Min Flow will result in the displayed
flow rate on the LCD display to be 0.0. This parameter is
used to suppress electrical noise at zero flow conditions,
and it is typically set to the flow rate equivalent of 0.1
ft/sec in the programmed pipe size. The Min Flow can be
adjusted in the Calibration menu.
Signal Strength Displays magnitude of signal being received by the
ultrasonic sensors. 100% is the ideal signal strength.
Signal strengths less than 100% could indicate poor pipe
conditions (corrosion), highly aerated water, or
programmed setup parameters which don’t closely
match field conditions. Consideration should be made to
use 1-cross installation method in such cases, if not
already using it.
USG/m
Tot 20130 USG
Relays 1 2 3 4 5 6
0.00
--Status------------
Velocity ft/s0.00
Flow 0.00 USG/m
Min Flow 4.00 USG/m
Signal Strength 100%
Exp. SOS 4900 ft/s
Meas. SOS 4900 ft/s

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TTFM 6.1 Transit Time Flow Meter
Status (cont.)
Exp. SOS Displays the expected fluid speed of sound
measurement, in units that match the Velocity. The
expected speed of sound is based on the pipe, fluid, and
temperature selection in the Setup menu.
Meas. SOS Displays the measured fluid speed of sound, in units that
match Exp. SOS. The meter calculates this value based
on the time it takes for the signal to arrive from one
transducer to another. Large differences between
expected and measured speed of sound (> 10%) typically
indicate an error in the setup of the instrument. Verify
the following are correct in the Setup menu and with the
physical installation of the transducers:
- Pipe Material
- Pipe OD
- Pipe Wall Thickness
- Liner Type
- Liner Thickness
- Fluid Type
- Fluid Temperature
- Crossings
- Separation Distance
--Status------------
Velocity ft/s0.00
Flow 0.00 USG/m
Min Flow 4.00 USG/m
Signal Strength 100%
Exp. SOS 4900 ft/s
Meas. SOS 4900 ft/s