FRP4 Fast Response Stud Temperature Sensor

The standard FRP4 probe assembly consists of a fast-response NTC thermistor (or PRTD element) mounted inside an M5 stud manufactured from either brass or PPS material.  The sensing element is mounted inside the threaded portion to maximise the speed of response to temperature change.

The FRP4 sensor can be supplied with various NTCs to suit your application.  From simple 3% tolerance thermistors to interchangeable RT-curve matched NTCs, we can supply a wide variety of sensing elements in this form factor.  In addition PRTDs including Pt100 and Pt1000 platinum elements can also be supplied in this form.

Various lead-wires and connector options can also help to customise this sensor for your particular application.  Call us to discuss the various options.



  • Coffee machines
  • Bearing housings
  • Heated blocks/platens
  • Hot water heater systems



  • Fast response design (Tc ≤ 3s)
  • Accuracy ±3% (or better)
  • Interchangeable NTCs or RTDs
  • Operating range up to -50°C /+180°C
ATC Semitec FRP4 - Fast Response Threaded Stud Temperature Sensor