Symptoms: Flow readout is opposite of the flow direction.
Possible Causes Recommended Action
• Integral mount transmitter
is mounted in reverse flow
direction so display is properly
oriented
• Up and down transducers
wiring reversedFlow direction
parameter is reversed
• Change the transducer flow direction parameter (Basic Menu > FLO DIR).
• Rewire the up and down transducers to the transmitter.
Symptoms: (Energy Models only) Energy reading appears to be incorrect.
Possible Causes Recommended Action
• Incorrect flow readings
• Incorrect temperature reading
Energy is directly calculated from the volumetric flow and temperature difference.
• Verify flow readings are within expected range:
◊ If in PROGRAM mode, press MENU to return to the RUN mode.
• Verify temperatures readings are within expected range:
◊ Service Menu (SER) TEMP 1, TEMP 2 and TEMP DIFF
Refer to symptoms for incorrect flow and temperature readings.
Symptoms: (Energy Models only) Energy reading is opposite of the flow direction.
Possible Causes Recommended Action
• Flow reading is opposite the flow
direction
• RTDs mounted in reverse order
• Verify the flow reading is correct. If not, refer to symptom “Flow reading is opposite of the flow
direction”.
• If flow reading is correct, then verify RTD readings.
◊ Refer to symptom “Temperature (RTD) reading appears to be incorrect”.
◊ Swap the RTDs mounting locations.
◊ In Rev S or later, change the RTD position parameter from NORMAL to SWAPPED: Basic
Menu (BSC) > RTD POS.
Symptoms: (Energy Models only) Temperature (RTD) reading appears to be incorrect.
Possible Causes Recommended Action
• Incorrect wiring
• Cable issue
• RTD not functioning
• RTD needs recalibration
Refer to Heat Flow for Energy Models Only section for details on proper mounting and wiring.
• Check that the RTDs are properly wired to transmitter (pins RTD1 A and B, RTD2 A and B).
• For surface mount RTDs, verify that RTDs are installed on a well-insulated pipe. Ensure that the
surface mounted RTDs have good thermal contact by verifying surface is bare metal and heat
sink compound is used.
• Verify that the fluid temperature is within range of the RTD specifications.
• At the transmitter, disconnect the RTD wiring. Measure the resistance between pin #6 and pins
#2/4, and between #5 and pins #1/3. The resistance should be 843… 2297 ohms depending
on the fluid temperature. The resistance between pins #2 and #4, and #1 and #3 should be less
than 5 ohms.
◊ If the measurements are significantly out of range or there appears to be an open or short
in the cable, replace the RTD.
◊ If the RTD appears to be functional, it may need to be recalibrated. See “In-Field Calibration
of RTD Temperature Sensors” on page92.
Symptoms: Current, frequency or pulse outputs do not match the readings.
Possible Causes Recommended Action
• Incorrect parameter settings
• Wiring or control system
configuration issues
Verify that the parameters for the output are set properly.
• 4…20 mA: refer to FL 4MA and FL 20MA in the Channel 1 menu
• Frequency output (Flow-only meter): refer to MAX RATE in the Basic Menu (BSC)
• Totalizing pulse: refer to TOT MULT and TOTL E in the Basic Menu (BSC) for proper configuration.
The pulse output is limited to one pulse per second. For frequency or pulse outputs, verify the
proper switch settings, ground reference, voltage source and load compatible with the control
system. Refer to Inputs/Outputs for proper wiring.
Troubleshooting
Page 90 May 2016TTM-UM-00136-EN-06
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