Answer / k.sreenivasan

Go to the field and check the local indication in the
transmitter.(normally it is in either engg. units or as
percentage)
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
periods.
Suppose local reading is ok,then check the DCS analog input
card for any fault condition and clear it.Normally this
situation is rare.

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.

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.

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).

Answer / satish

SEE THE FIRST ALRM CONDITION ON TRANSMITTER BECAUSE MOST
PROBABILITY IN PRIMERY ELEMENT PROBLE.

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

Answer / altamash

first check the TB in marshalling cabinet then check local display in transmitter and then DCS

Answer / srinivas

check wiring in i/o

Hi Frnds , If Suppose 1 Pair cable of 1.5 sq mm is used for Transmitter and instead of 1.5 sq mm if i used 0.5 sq mm cable will the resistance change will occur and does it affect our transmitter reading. plz mail ur answer to ntnkamble@gmail.com plz immediately mail ur reply

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