i am working in thermal power plant .
if temperature transmitter is not showing reading in dcs
then how can we rectify the problem?

Answer Posted / 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.

Is This Answer Correct ?    24 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Instrument QA/Qc what is the project quality plan?conduit inspection RFI. which documents attache with package?

10390


why we are using drum level control valve air to close?

1591


what are the definitions of input, output, command & signal according to instruments controlled by PLC using DCS System?

1620


Define the terms Accuracy, precission, Spam, process tolerance while doing calibration of an instrument? Explaini with an example?

1552


Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...

1888






the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove

1122


What are different types of valves?

670


how to calibrate mass flow meter (Coriolis)? Example calibration range: 0 to 2500 kg/hr line size 3" fluid: Etheline glycol (MEG)

2242


anybody having Qatar Petroleum questions for instrument Technician offshore ....please send me

5539


May I have a brief note above the voltage barriers? Whats is the purpose? Please mail me if you've operational details, mail id: rajkumar.diice@gmail.com

1595


1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling

1947


Hook up resistance decade box to temp.transmitter.

1713


selection criteria of control valve? and selection criteria of actuator explain in brief?

3642


how to measure draft pressure in transmitter pl. give its single line digram

1514


why we are using digital signals for I/O & how to measure this signals is getting or not ?

1528