1. prepare the instruments needed in calibrating temp.
transmitter.
2. loosening the resistance input of the transmitter, and
connect it to a resistance box.
3. loosening the output side of the transmitter, connect the
ammeter series with the supply of 24 volts dc.
4. supply it with the resistance of 0% or 100 Ohm until
100%.
5. the next is the zeroing. supply the input with 100 ohm
resistance. adjust the adjustment of the zero side by
twisting slowly to the left to have an output of 4 Ma.
6. span- supply the transmitter with 100% depends on the
value of high temperature of the RTD value. and adjust it
to 20mA.
7. repeat it up to 5 times.
then supply is again with 100 Ohm, must have an output of
4mA until 100%.
record it
0% must have an output of 4mA, 25% 8mA, 50% 12mA, 75%
16Ma, and 20mA for 100%.