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 |
Post New Answer View All Answers
what is interface level and how it is calibrate?
why we r opening HOT BYPASS valve during startup of a compressor?
What is difference between differential pressure & delta pressure?
why we use cascade control and feed foreword control in 3 element control of boiler drum ?what is feed forward and cascade control system ?
What are the error values can accepted in flow transmitter calibration?could u give any formula for this?
Explain the mechanism behind the turbine meter.
describe flow nozzel principle?
What is eddy current? Describe the operating principle of proximity probe.
Any one can help me to identified, how can we interchange the device in FF
How to control flow variations in magnetic flow maters..... When i will provide proper earthing?
What is Erosion in a control valve?
few questions on RS 232,1 question on relationship of impedance and turns ratio, many questions on flowmeters
State four different types of flow measurement, for gas flow measurement MMSCFD is the common unit expand the unit and specify significance of word S in the unit.
Can Any body tell me how to check Modbus Settings in ER300N L&T trivector meter?
Specify for Cables - Flame Retardant and Fire Resistant?