GL400-UM-251-9370
5-9
5. INSPECTION AND CHECK PROCEDURES
5.2.3 RTD Accuracy
Preparation
As shown below, use leads to connect the target amps to the resistor box.
Wiring connection
AC adapter
Resistor Box
Connect to +, -, and b terminals of CH2.
Measurement procedure (
RTD accuracy)
(1) Load the condition settings file CondRTD.CND as described above.
(2) As shown in the figure above, connect the output of the resistor box to the GL450/400/350’s input
terminal.
(3) Use the resistor box to successively set the reference resistance for each range according to the table
below, then check that the level of measurement is within the rating.
Input resistor precision ratings
Temperature
Resistance value
Standard
0 ˚C
100 ohm
-0.5 ˚C to +0.5 ˚C
400 ˚C
247.09 ohm
399.3 ˚C to 400.7 ˚C
800 ˚C
375.51 ohm
799.2 ˚C to 800.8 ˚C
