Answer / rajendra shaha

in general RtD and thermister is passive transducer and
thermocouple is active transducer

Answer / sanal sasidharan

RTD & Thermocouple are positive temp. Coefficeint and thermistor is negative temp . Coff..

Answer / krunal

rtd defines increase in resistance when temp. increase. rtd is positive temp. co-efficient. thermistor defines decrease in resistance when temp. increase. thermistor is negative temp. co-efficient. themocouple is measure temp. difference(t1-t2.

Answer / r.kannan

with t/c we can measure upto 1700deg. but with RTD 600
degree is accurable. in t/c only the tip is sensing point
wihre in RTD the average value will be taken.

Answer / elsayem

rtd use for low temperature
thermocpuple use for very high tempretue

If mVolts can drop by resistance of wire as compare to mA, then how thermocouple mV reaches in CCR as accurate value?

7 Answers  

If the average power during generation is zero, why do the analog meters have + and - ?

1 Answers   Siemens,

I am using Capacitive type level transmitter for measuring oil level in a closed tank (lub oil tank). The txs range is 1500mm, and they do hunt regularly (for about 45mm), can anybody tell what could be the reason??? or any other type level tx that could be used to avoid this?

1 Answers  

how to measure oxygen which methods are using?

0 Answers  

control modes

1 Answers   Vedanta,

In control valves (like feed water control valve) we will give 3 kg pressure and how it controls 110 kg of water pressure?

4 Answers   SSL,

what is axial shift n what is differential expansion in turbine? how many sensor probes r mounted for this n how it works?

2 Answers   Apple,

Where are use of pressure,level,flow switches?and what is input and output

3 Answers  

GWR radar transmitter working principle?

2 Answers   Tata Steel Limited,

generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

1 Answers  

What is CNC

1 Answers  

What is zone,loop/fire alarm system?

0 Answers   Emco,