HOW TO CHECK THERMOCOUPLE AND RTD & WHAT IS THE DIFFERENCE
BETWEEN THERMOCOUPLE AND RTD
Answer Posted / yadav manoj
Thermocouple is basically couple of two dissimilar matel
wire which generate certain emf on puting the couple end in
higher temperature source.As emf is generated then it can
measure in terms of mV.Phisically we can check the T/c by
checking it two wires, they will be of different
material/metal alloy.
RTD is resistance temperature detector works on the basis
of resistance changes when temperature changes. Physically
they can be identified by wire exposed to make
connection.In normally everyone uses three wire RTD, in
which 2 wires are of same insulation colour and resistance
between them will be nearly 2-3 Ohms. The resistance b/w
third wire and any of those wire will be 119.5 Ohms at room
temperature.RTD never generate emf hence we can't measure
any mV b/w any of wire of RTD.
| Is This Answer Correct ? | 91 Yes | 7 No |
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