Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / sam.r
Most RTD’s incorporate a third wire with resistance R3.
This configuration provides one connection to one end and
two to the other end of the sensor. Connected to an
instrument designed to accept 3-wire input, compensation is
achieved for lead resistance and temperature change in lead
resistance. This is the most commonly used configuration.
If three identical type wires are used and their lengths are
equal, then R1 = R2 = R3. By measuring the resistance
through leads 1, 2 and the resistance element, a total
system resistance is measured (R1 + R2 + RE ). If the
resistance is also measured through leads 2 and 3 (R2 + R3),
we obtain the resistance of just the lead wires, and since
all lead wire resistances are equal, subtracting this value
(R2 + R3) from the total system resistance (R1 + R2 + RE)
leaves us with just RE, and an accurate temperature
measurement has been made.
| Is This Answer Correct ? | 5 Yes | 1 No |
Post New Answer View All Answers
Why rdt and thermocouple both give different output .and one things more, how to generate ohm or mili volt plz mail me merajalam143545@yahoo.com
Why plc require in analog input 4-20amp & 0-10 volt?
How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer
Explain the working of an enraf level gauge.
ORP sensor working principle?
Explain Gas Turbine startup and shutdown sequences
Which language of programing is popular? how can i learn it ?
What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus
what is the PC interface and software for connection to ABB logic module “ LM011-CE18RAC “ ( for Programming ) ??
Draw a great bridge circuit.
where proximity sensor installed on tank in loading arm application
hii my name is sujith...i am preparing for HPVL GET 2010... so ,,,pls help me by send any previous questions or material to my site.....(Msujith_12@in.com) thank q
How we connect a instrument with ground, Give brief explanation with help of diagram?
Why humidity limit is 30 to 55 % for raw material storage?
why Fahrenheit unit of moistur analyzer transmitter
