WIKA Pascal ET - Manual (Page 25)

6 Commissioning, operation
WIKA Operating Instruction, Model Pascal ET and Pascal ET/IS 25
GB
6.2.3 Thermoresistance measurements
The electrical module measures signals from thermoresistance and shows it in different
engineering units (°C, °F, K).
Thermoresistance types, measuring range and related resolutions are given in the following table:
Type Range/°C Resolution/°C
Max
Pt100 (385) - 200…850 0,1
- 200…850 0,01
Pt100 (3916) - 200…850 0,1
- 200…850 0,01
Pt100 (3926) - 200…850 0,1
- 200…850 0,01
Pt100 (3902) - 200…650 0,1
- 200…650 0,01
Pt100 (3923) - 200…600 0,1
- 200…600 0,01
Pt100 JIS (3916) - 200…600 0,1
- 200…600 0,01
Pt200 (385) - 200…850 0,1
- 200…850 0,01
Pt500 (385) - 200…850 0,1
- 200…530 0,01
Pt1000 (385) - 200…850 0,1
- 200…850 0,01
Pt1000 (3916) - 200…850 0,1
- 200…850 0,01
Ni100 (617) - 60…180 0,1
- 60…180 0,01
Ni120 (672) 0…150 0,1
0…150 0,01
Cu10 (42) - 70…150 0,1
- 70…150 0,01
Cu100 - 180…150 0,1
- 180…150 0,01
Table 3 - Thermoresistance measurements table
It is possible to connect the thermoresistance according to the type of measurement: 2 wires, 3
wires and 4 wires. The two wires measurement is performed without any compensation of the
connecting cables resistances; in this case the connection is among the two central (COM -
Ω)
pins. In the case of three wires connection the pin identified with the writing 3W must also be used.
While for the four wires measurement, the most accurate of the above, is performed by using all
four pins.