MIK-WZPK RTD Temperature sensors with mineral insulated resistance thermometers

MIK-WZPK RTD sensors is a mineral insulated resistance thermometers.Generally, electrical resistance of metal varies, depending on the temperature. Platinum in particular is more linear and has a larger temperature coefficient than most other metals. It is therefore, most suitable for temperature measurements. Platinum has excellent properties chemically and physically. Industrial high purity elements are readily obtained for long term use as a resistance element for temperature measurements. The characteristics are specified in JIS and other foreign standards; thus, it permits a highly accurate temperature measurement.


Sensor: Pt100 or Pt1000 or Cu50 etc

Temp.: -200℃ to +850℃

Output: 4-20mA / RTD 

Supply: DC12-40V

  • Advantages

Wide range of measurement

Due  to its very small outer diameter, this resistance thermometer sensor  can be inserted easily into any small measuring object. It is used over a  wide range of temperatures, from -200℃ to +500℃.

Ouick response

This  resistance thermometer sensor has a small heat capacity due to its small size and is highly sensitive to small changes in temperature and  has a quick response.

Simple installation

Its  flexible feature (bending radius more than double the sheath outer  diameter) makes for simple and on-the-spot installation into complex  configurations. The whole unit, except for the 70mm at the tip, can be  bent to fit.

Long life span

Contrary  to conventional resistance thermometer sensors which have a  deterioration of resistance value with age or open circuits, etc.,  resistance thermometer sensor lead wires and resistance elements are  insulated with chemically stable magnesium oxide, thus assuring a very long service life.

Excellent mechanical strength, and vibration resistance.

High performance is assured even under unfavorable conditions such as when used in vibrating installations, or in corrosive atmospheres.

Custom sheath outer diameters available

Sheath outer diameters are available, between 0.8 and 12 mm.

Custom long lengths available

Lengths are available up to 30 m maximum, depending on the outer diameter of the sheath.


  • Specification

pt1000 temperature sensor

temp sensor

Industrial temperature sensor

temp sensor application

Type of Resistance thermometer sensor

Nominal resistance value at℃ Class Measuring current R(100℃) / R(0℃)
Pt100 A Below 2mA 1.3851
1. R(100℃) is the resistance value of the sensing resistor at 100℃.
2. R(0℃)     is the resistance value of the sensing resistor at  0℃.


Standard Specifications of Resistance Thermometer Sensor

Sheath Conductor wire Sheath Approx
max length weight
OD(mm) WT(mm) Material Dia(mm) Resistance per wire Material (m) (g/m)
Φ2.0 0.25 SUS316 Φ0.25 Nickel 100 12
Φ3.0 0.47 Φ0.51 0.5 83 41
Φ5.0 0.72 Φ0.76 0.28 35 108
Φ6.0 0.93 Φ1.00 0.16 20 165
Φ8.0 1.16 Φ1.30 0.13 11.5 280
Φ9.0 1.25 Φ1.46 0.07 21 370
Φ12 1.8 Φ1.50 0.07 10.5 630
Φ3.0 0.38 Φ0.30 - 83 41
Φ5.0 0.72 Φ0.50 ≤0.65 35 108
Φ6.0 0.93 Φ0.72 ≤0.35 20 165
Φ8.0 1.16 Φ0.90 ≤0.25 11.5 280
Φ9.0 1.25 Φ1.00 ≤0.14 21 370
Φ12 1.8 Φ1.50 ≤0.07 10.5 630


Tolerance of RTDs to Temperature and Applicable Standard Table

  IEC 751 JIS C 1604
Class Tolerance (℃) Class Tolerance (℃)
Pt100 A ±(0.15 +0.002|t|) A ±(0.15 +0.002|t|)
( R(100℃)/R(0℃)=1.3851 B ±(0.3+0.005|t|) B ±(0.3+0.005|t|)
1.Tolerance is defined as the maximum allowable deviation from the temperature vs resistance reference table.
2. l t l=modulus of temperature in degrees Celsius without regard to sign.
3. Accuracy class 1/n(DIN) refers to 1/n tolerance of class B in IEC 751  

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