Why we using 250ohm resistance during lab calibration and why not using in field in one plz define deeply???
Answer Posted / vibhash kumar(voith)
Because our maximum electronic components working in the range of 1 to 5 VDC.250 omhs is suitable for the both 1 to 5 V and 4 to 20 MA.through the omhs law.if we will take 4mA it will for 1vdc and 20 mA for 5 vdc( V= IR).we are not using in field because AI 250 mA already contains.so we have no need in field.
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
Specify for Cables - Flame Retardant and Fire Resistant?
please send the sample qustion paper for iocl written test ..
How would you choose differential range?
How process line mpm calculation is done?
Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection
Can anybody please let me know Orifice plate sizing calculation formula and step by step procedure
There are two chlorination tonners both are connected to two pressure swithes and the pressure switch is connected to SOV which operates the valve to changeover the tonner selection i.e if pressure one tonner goes low the other tonner should come in line if it is inautomatic selection design a circuit using relays ?
How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks
Using your own examples solve a problem involving normal table. (experimental method and analysis)
Explain the combusion chamber
in natural gas indirect water bath heater,how to prevent the problem of backfire from firetube during ignition...becoz of this backfire performance of wbh is going low.
all questions related to instrument technician in any offshore oil and gas company.
What is the difference between modbus,fieldbus & profibus
How you calibrate absolute pressure with the calibration range of 0 to 1000 0C Absolute. Please explain the procedure for calibration.
How ejector(or)evactor air pump is working in thermal power plant?