Temperature Sensors - BEAMEX MC5-IS User Manual

Temperature Sensors

Required modules
Preparations
1. Place the sensor of the instrument (and
the sensor of the reference thermom-
eter) into the calibration bath/dry block.
Connect it/them to suitable terminals in
MC5-IS (RTD or T/C). If the sensor is a
thermocouple, select one of the avail-
able 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.
112
Calibration
This procedure suits temperature sensors no matter if they are RTDs
or thermocouples. The sensor's output signal is measured with MC5-
IS or it is keyed into MC5-IS. The reference temperature is either
measured with MC5-IS or it is keyed into MC5-IS.
If you measure the reference temperature using MC5-IS, remem-
ber 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.
•
The ET module for measuring the sensor's output signal and
possibly also for measuring the reference temperature.
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
brate
but immediately return to Basic
Mode.
Reference
thermometer
Sensor
T/C INT. RJ
T/C, Low V R, RTD
T/C
WIRES
ONLY
meas/sim
SENSOR MEASURE & SIMULATE
06.10.2000 11:06
Input
Desired Input Value 25.00
Output
Error
1.00
II 1 G
+
EEx ia IIC T4
(Tamb = 50°C)
VTT 02 ATEX 003 X
0
Ex ia IIC T4
(Tamb = 50°C)
VTT No. Ex-02.011 X
-
0%
INPUT
Ui: 30 V
Pause
Ii: 215 mA
P i: 1 W
M U L T I F U N
C
/
4 w meas HART ® I
meas/sink
V, I ,
sink
V, , Com
3 w meas
Uo: 16 V
Io: 24 mA
Po: 145 mW
OUTPUT MEASURE
ET E Low V
?
TC Temperature [ET:Control]
K NiCr/NiAl
25.01
°C (ITS90)
RTD Temperature [ET: Meas]
Pt100 α385
24.94
°C (ITS90)
-0.06 % of span
50% 100%
Accept
Readings
C T I O N C A L I B R A T O R
Cali-