PDQ400 Fast Response Pocket Digital Thermometer


Waterproof Pocket Digital Thermometer

The PDQ400 Waterproof Pocket Digital Thermometer with Thin Tip Probe is compact and slim and has a thin probe tip for fast response. The 1.5mm probe is ideal when chefs check the temperature of thin foods like burgers. The PDQ400 Thermometer is waterproof so ideal for use in busy, steamy kitchens and can also be used to check commercial dishwasher cycles.

There is also a handy data hold feature on this Pocket Digital Thermometer which enables the user to temporarily hold the digital reading on the screen while they note a measurement.

The PQ400 Waterproof Pocket Digital Thermometer has a protective case for safe storage and transportation.


  • °C or °F
  • Accuracy ±0.5ºC / ±1ºF
  • Waterproof
  • Thin tip probe
  • Response in under 6 seconds
  • Extended range -20º to +200ºC / -4º to +400ºF
  • Auto power off
  • Maximum temperature hold
  • Slim profile fits flat in pocket
  • Data hold to freeze a reading
  • Withstands constant use in wet or humid conditions
  • Five year limited warranty
  • Field Calibratable
  • NSF
  • BioCote® anti-microbial protection



Field Calibration Procedures

Follow the instructions below to check the calibration of your PDQ400 Waterproof Pocket Digital Thermometer

  1. The thermometer is only calibratable in slush ice solution (60% crushed ice and 40% tap water) or a water bath.  Do not attempt to calibrate in any other manner.
  2. Immerse the stem of the thermometer to at least half length in the slush ice solution.
  3. Wait for the reading to become stable (usually ±1° of 0°C / ±2° of +32°F).
  4. Press and hold the CAL button for 8 seconds to begin calibration.
  5. CAL will be displayed for two seconds and calibrate at 0°C / +32°F is completed.
  6. Remove the thermometer from the ice water and continue to take measurements.

Note: CAL will be displayed any time the CAL key is pressed for 7 seconds, but the thermometer will not be re-calibrated unless the top is inserted in ice.

Download Literature

    PDQ400 Pocket Digital Thermometer

Technical Specifications

Temperature Measurement Range-20°C to +200°C / -4°F to +400°F
Accuracy±0.5°C / 1°F
Sampling Time1.5 seconds
ResponseUnder 6 seconds
Probe Tip Diameter1.5mm
Battery Type1.5 V Button Cell battery (LR44)
WarrantyLimited 5yr warranty

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