Presys T-500PIR Technical Manual page 21

PRESYS
 Instruments
Input calibration for  is performed in two steps:
a) Application of mV signal:
For the calibration below, leave terminals RTD3 (+) and RTD4 (+) short-circuited.
mV Signal
V_OHM3
V_OHM4
b) Application of standard resistors:
Connect a decade box or standard resistors on terminals RTD1, RTD2, RTD3
and RTD4 (4-wire connection).
resistors
OHM3
OHM2
OHM1
The cold junction calibration (CJC) is performed measuring the mV (-) terminal
temperature. Store only the 1 st point.
Page 18
Terminals
RTD3(+) and mV(-)
RTD4(+) and mV(-)
1 st point
20.000 
100.000 
500.000 
Cold Junction
CJC
1 st point
90.000 mV 120.000 mV
90.000 mV 120.000 mV
2 nd point
50.000 
500.000 
2200.000 
1 st point
32.03 ºC
T-500PIR
2 nd point