Wise R Series - Wiring; Extension & Compensation Wire; Thermocouple(Tc); Resistance Thermometer Detector(RTD)

15
C-QIM-2731-T01_EN_Rev.2
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6. Wiring
6.1 Extension & compensation wire
This type of cable used for temperature measurement. A wire of the same material (extension) as the
thermocouple(TC) or a material having thermoelectric power characteristics as the thermocouple(TC)
is extended to the terminal of the instrument. A compensation wire provides the same temperature
compensation effect as an extension of the thermocouple(TC). Depending on the use environment
and conditions, different insulation and sheathing materials may be used, including low-temperature,
high-temperature, humidity-resistant, oil-resistant, and flex-resistant materials.
6.1.1 Thermocouple(TC)
 The wire is made of the same material as the thermocouple(TC), and indicates the same
temperature measurement as the thermocouple(TC).
 Temperature is measured using the change in voltage (㎶) according to temperature changes.
Therefore, sufficient consideration must be given to voltage drop when selecting the unit.
6.1.2 Resistance thermometer detector(RTD)
 Temperature is measured using the change in resistance (Ω) according to temperature.
 Resistance thermometer detector (RTD) cables are selected as 3-wire or 4-wire, and one end of
the shielding wire must be grounded.
Type
Conductor
Insulator
Shielding
Thermocouple (TC)
By thermocouple
type
Glass braiding
Tinned braided wire
Teflon
Teflon
Vinyl (PVC)
Vinyl (PVC)
Resistance
thermometer detector
(RTD)
Tinned copper wire
Glass braiding
Tinned braided wire
Teflon
Tinned braided wire
Vinyl (PVC)
Vinyl (PVC)
1) Extension & compensation wire having specs appropriate for measuring temperature sensor
signals must be selected and used.
2) Voltage flow must be given consideration when deciding cable thickness.