i am working in thermal power plant .
if temperature transmitter is not showing reading in dcs
then how can we rectify the problem?
Answers were Sorted based on User's Feedback
Answer / k.sreenivasan
Go to the field and check the local indication in the
transmitter.(normally it is in either engg. units or as
If it is zero ,then the problem is in the sensor or
terminal connection, because most of the current generation
transmitters are highly accurate and have longer stability
Suppose local reading is ok,then check the DCS analog input
card for any fault condition and clear it.Normally this
situation is rare.
|Is This Answer Correct ?||24 Yes||1 No|
Answer / s. kanniyappan
Check the Sensor properly. if it is ok, then
1)check continuity between the sensor cables
2)tight the cables properly
3)check the transmitter supply (24vdc)
if it is not ok, then check the DCS analog i/p cord.
|Is This Answer Correct ?||14 Yes||0 No|
Answer / k.manikanta naidu
check the millivolts output of thermocouple.then multiply
with the standard values depends on the type of
thermocouple.if the value is ok,check the temparature
trnsmitter,then check the mA o/p of TT.
|Is This Answer Correct ?||8 Yes||0 No|
Answer / g kiran kumar
1. Check the wiring at all terminal blocks at field, at
control panel and at PLC for any loose connection.
2. Check the Transmitter supply.
3. Measure the output from Transmitter.
4. Check cable continuity.
5. Finally check the configuration of TAG in the DCS (may
be someone deleated accidently).
|Is This Answer Correct ?||6 Yes||0 No|
Answer / satish
SEE THE FIRST ALRM CONDITION ON TRANSMITTER BECAUSE MOST
PROBABILITY IN PRIMERY ELEMENT PROBLE.
|Is This Answer Correct ?||6 Yes||3 No|
Answer / pradeep kumar
check the tt reading once again check the main cable (from
element resistance or mv)and also check the branch
cable(from dcs 24 v)its available the problem in dcs side
check the analog modules
|Is This Answer Correct ?||1 Yes||0 No|
Answer / srinivas
check wiring in i/o
|Is This Answer Correct ?||1 Yes||5 No|
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