Screw-in sensors

Screw-in sensors are used to protect electrical machines against thermal overload. KRIWAN screw-in sensors with the same or different nominal response temperatures can also be connected in series. This makes it possible to monitor different limit temperatures at low cost. KRIWAN screw-in sensors are characterized by a very steep R/T characteristic. The design is optimized for low thermal inertia.

100% testing - every sensor is tested

Reliable protection against thermal overload and overheating

Technical features

Compare the different KRIWAN screw-in sensors.


Max. Operating voltage Umax 30 V
Nominal response temperature Von 60 °C -160 °C
Tolerance from  ϑNAT ±5 K
Cold resistanceR25 ≤100 Ω
Insulation test Ueff = 1500 V
Permissible ambient temperature TA -25...+180 °C
Sheath insulation SiHF
Core insulation FEP
Operating pressure 150 bar
Tightening torque 15Nm
Housing material V2A Stainless steel
Max. Operating current Imax 1mA
TK Temperature coefficient 0,385 %/K
Sensor resistance at 0 °C 1000 Ω
Insulation test Ueff = 1500 V ~
Measuring range -25°C…+155°C
Sheath insulation SiHF
Core insulation FEP
Operating pressure 150 with Teflon insulation
Tightening torque 15 Nm
Housing material V2A stainless steel
Electrical tolerance EN 60751 Class B
Max. Operating voltage Umax 10V DC
Resistance R25 10000 Ω
B-Value B25/100 3981K
Measurement range -50°C bis 150°C
Tolerance Delta T: ± 1,0 K in the entire defined area
Delta R: Accuracy class ± 0,1 %
Thermal response time
(IEC 751, DIN EN 60751)
τ < 30 s of 90% of the temperature jump
High-voltage strength 1,5kV

Possible connection threads

To ensure that the KRIWAN single-screw sensor also fits into your application, KRIWAN offers you a variety of connection threads!

  • M5
  • G1/4"
  • G1/8"
  • NPTF 1/8"

Download documentation screw-in sensors

Together we will find the right screw-in sensor for your application!


Application Sheet

Screw-in sensors for industry 4.0

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Selection Guide

Selection Guide Screw-in sensors

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