HMS P-Series (Low Heat-Shock)


HMS P-Series (Low Heat-Shock)

The HMS P-Series is a special design for low heat-shock behaviour. It is a single element thermopile sensors in small TO-46 package and are optimized for temperature measurements (e.g in-ear thermometers). Due to the stable measurements even in heat-shock situations the measurement speed can be increased without loosing accuracy. Like all our sensors, the HMS sensors support a fully modular concept. You can choose a thermopile sensor chip size and an infrared filter which is mounted from the outside to improve the measurement accuracy. Additionally, the sensor can be equipped with an optional thermistor providing temperature reference.

Features and Benefits

  • Special low heat-shock design
  • Fast and accurate measurements even in changing ambient temperatures
  • Small TO-46 package
  • 3 different thermopile sensor chips available
  • Large number of filter options
  • Integrated thermistor temperature reference



 HMS P11HMS P1c1HMS P21Unit
Element size0.6²0.76²1.2²mm²
Voltage response223063V mm² / W
Sensitivity776855V / W
Resistance RTP867584kOhm
TC of resistance RTP0.020.020.02% / K
Noise383537nV / Hz½
Detectivity0.84e81.0e81.4e8cm Hz½ / W
Time constant< 5810ms
Thermistor reference100100100kOhm
Temp. coeff. of thermistor394039403940K
Field of view878787degree
Operating temperature-20 .. 120-20 .. 120-20 .. 120°C
Storage temperature-40 .. 120-40 .. 120-40 .. 120°C


Heat Shock Response

Temperature Measurement Filters