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6 Commissioning, operation

WIKA Operating Instruction, Model Pascal 100 and Pascal 100/IS 27

6.3.3 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.

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Wika Pascal 100 Manuale Utente Pagina 27

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