Manufacturer: 3M
Part Number: QUESTEMP°II
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The QUESTemp° II personal heat stress indicator monitors an individual’s body temperature for indications of the onset of heat stress. It warns the user when their personal body temperature has risen above the "safe" level and that action should be taken to allow the body to cool.

The QUESTemp° II heat monitor is a belt or pocket worn device with a thin, flexible cable leading up to a small earmold containing the sensor and a small speaker. An E.A.R.® foam earplug slides over the sensor providing a comfortable vehicle for inserting and maintaining the sensor. The speaker and earmold remain just outside of the ear to completely avoid any possible damage or injury to the ear canal.

Output recorded data directly to a serial printer or download to DMS software, the system solution for storage, retrieval, analysis, reporting, and charting of all your heat stress monitoring data.

Key Features

  • Belt worn personal heat stress monitor
  • Monitors core body temperature

DMS Compatible

  • Yes


  • Thermistor temperature sensor


  • RS232 serial computer/printer interface


  • Summary and time history

Datalogging Intervals

  • Fixed at 10 seconds


  • Aluminum


  • 5.1 x 2.5 x 1" (64 x 130 x 25 mm)


  • 10 oz (283 g)

Available Measurements

  • Celsius and fahrenheit scales
  • Temperature

Intrinsic Safety:

  • UL/CSA Standards for Class i, Groups A, B,C & D; Groups E, F & G; Class. Temperature Code T3
  • European Standards for EEX ia IIC, T3

Electromagnetic Conformance

  • CE Mark

Power Source

  • 9V disposable batteries (60 Hrs.)
  • Measurement parameters

Temperature Range

  • 32o to 40o C (90o to 104o F)