BEAMEX MC5P - Temperature Sensors

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Calibration
Temperature Sensors
This procedure suits temperature sensors no matter if they are RTDs
or thermocouples. The sensor’s output signal is measured with
MC5P or it is keyed into MC5P. The reference temperature is either
measured with MC5P or it is entered or communicated (Input Method
Controlled/Meas) to MC5P. Automatic calibration requires the firm-
ware option for communicating with the calibration bath / dry block.
If you measure the reference temperature using MC5P, remember
the following conditions:
• If the sensor to be calibrated is a thermocouple, the reference
thermometer needs to be an RTD sensor.
• If the sensor to be calibrated is an RTD sensor, the reference
thermometer needs to be a thermocouple.
Required modules
• The ET module for measuring the sensor’s output signal and
possibly also for measuring the reference temperature.
Preparations
1. Connect the calibration bath / dry block
to MC5P’s AUX connector (if applicable)
using the communication cable pro-
vided with MC5P. Place the sensor of
the instrument (and the sensor of the
reference thermometer) into the calibra-
tion bath/dry block. Connect it/them to
suitable terminals in MC5P (RTD or
T/C). If the sensor is a thermocouple,
select one of the available reference
junction methods:
• The internal Reference Junction
module is in use.
• The reference junction is fixed to
0°C.
• The reference junction tempera-
ture is entered.
• The reference junction tempera-
ture is measured externally using
an RTD connected to the RTD ter-
minals.
See Part C for additional information
concerning the reference junction meth-
ods.
2. Test the connections in Basic Mode if
needed. To quickly configure the Basic
Mode’s windows, go to Calibration
Mode, select the instrument to be cali-
brated and the Function Key C/Cali-
brate but immediately return to Basic
Mode.
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Reference
thermometerSensor
+24V
V, ,
Open
CloseClose
T/C
WIRES
ONLY