NR Series Sheathed Resistance Thermometers

Data_Sheet
The NR series sheathed resistance thermometers are the high performance resistance thermometers with high sensitivity, solidity, and durability required in a general industrial sensor. The thermometer is constructed by densely filling the gap between a protective tube and a resistance thermometer element with magnesium oxide.
The thermometer has excellent response. vibration resistance and impact resistance, and withstand long-term continuous operation in hot and unfavorable environment.

Features

  • Quick response
  • Excellent heat resistance and corrosion resistance
  • Excellent vibration resistance and impact resistance
  • Easy-to-use terminal head

Specifications

Element
Pt100, JPt100, 3-wire type
Class
JIS A, B
Measuring current
2mA, 1mA
Measuring temperature
-200 to 500°C
Protective tube material
SUS316
Protective tube outer diameter
Φ3.2mm, Φ4.8mm, Φ6.4mm, Φ8.0mm
Protective tube length
300 to 2000mm
Top shape
Closed type
Bending radius
More than 2 to 3 times of protective tube outer diameter (R 2D to 3D)
Disable bending part
100mm from top
Mounting metal
Impossible to mount metal within 70mm from top
Insulation material
High purity magnesium oxide (MgO)
2-element type protective tube diameter (Element diameter)
Φ3.2mm, Φ4.8mm, Φ6.4mm, Φ8.0mm

Response time (From 0°C to 100°C boiling water)

Protective tube outer diameters

Response

63.2%

90%

Φ3.2 mm

2.0 seconds

4.6 seconds

Φ4.8 mm

3.0 seconds

7.0 seconds

Φ6.4 mm

6.8 seconds

15.7 seconds

Φ8.0 mm

7.2 seconds

17.9 seconds

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