why we use 24v dc in instrument rahter than 230vac????
Answer Posted / visakh ctjv
all loop powered transmitters are capable of
withstanding 10 t0 36v dc ...as per the process requirement
it will vary.. insome industries they are using 12v dc
also.. 24 vdc is used because as per ISA there are some
standards wich will match other process reqirement like
24vdc relays for digital control also wecan use 24dc to
energize tis relays
| Is This Answer Correct ? | 22 Yes | 7 No |
Post New Answer View All Answers
how many types of viberation transmitter and how to calibrate and where use of vibration transmitter
What is rang ability?
What is the diffrence between ff tx and non ff tx
in differential pressure transmitter,min&max pressure range for hp&lp
What is solenoid valve? Where it is used?
How u measure the massflow in orifice flow measurement techniques
how radio frequency level probes works with its controller ? what is its principle ? pls give me brief explanation?
What is feed factor and its Importance in cement industry? How we can solve feed factor?.
Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection
i hav applied for the post of engg. in iocl so please require the past test papers fro instrumentation engg please please help me and send me the papers or tell me the pattern and type of ques asked in examination......
1.can you use SCADA instead of DCS,DCS instead SCADA 2.Difference between DCS and PLC,can their role be reversed i.e. role interchange 3.Difference between RTU and PLC
How to Calibrate Radar Level Transmitter in Field
Regarding , there is an air cooler which control the fans(50% of AV FANS) by temperature in outlet , and the louver of Air cooler is controlled by HIC from control system , So if on Air cooler we will consider 2 individual I/P converter or positioner?
Hi i m B.E. In elect. & comm. I m workin in bio mass plant from 6 mnths as inst. Engg. but now i m in dept. Of operation as shift engg...which is best operation or inst. 4 me? M confusd..plz help and reply me..
key phaser where is use and work