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Hanna Instruments Canada
Customer Support: (800) 842-6629

Infrared Thermometer for the Food Industry - HI99550

The HI99550 is an infrared thermometer designed to measure surface temperatures for the food industry. With a quick, one-second response time and battery life indicator, this thermometer is an ideal solution for non-intrusive infrared measurements.

  • ±2% (of reading) or ±2°C Accuracy
  • One-second Response Time
  • Battery life indicator


The HI99550 Infrared Thermometer is a durable meter that can be used throughout the food industry. The HI99550 offers features such as a quick, one-second response time, battery life indicator, and is designed with a wrist-strap and ergonomic shape for greater ease of use.

The non-intrusive nature of the HI99550 is particularly attractive in the food industry since it translates itself into substantial savings by leaving products intact, especially those sealed or pre-wrapped. This type of non-intrusive measurement is also useful when the surface temperature is high, for difficult-to-reach places, or hygiene requirements must be followed. 

Taking the temperature of an object is easy with the HI99550; simply aim the sensor in the direction of the object, press the “ON/OFF” button pressed for a few seconds until the reading stabilizes.The measured value will be immediately displayed on the LCD.

Features at-a-glance

℃ Readout – Measurements are displayed in degrees Celsius on the clear, easy to read LCD display.

Optic Coefficient – The optic coefficient is the distance between the sensor and the measured object is an important factor in infrared measurement. With a 3:1 relationship between the distance and object area, the HI99550 can measure an area with a diameter that is one third of the distance between the sensor and the object.

Fixed Emissivity – Emissivity is the ratio of infrared radiation emitted by an object to that emitted by a perfect black body at the same temperature. The HI99550 was designed to measure the temperature of objects with an emissivity of 0.95, which is characteristic of most objects and surfaces being measured.

Low Battery Indicator – When the battery level is below 10%, a warning symbol will blink to indicate low battery condition.

Additional information

Weight 0.38 kg


Temperature Accuracy

±2% of reading or ±2°C

Temperature Range

-10 to 300°C


SKU HI99550-00
Name Infrared Thermometer for the Food Industry – HI99550
Temperature Range -10 to 300°C
Temperature Resolution 1°C
Temperature Accuracy ±2% of reading or ±2°C
Battery Type/Life 9V / approximately 150 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH max 95%
Dimensions 143 x 80 x 38 mm (5.6 x 3.2 x 1.5”)
Weight 320 g (11.3 oz)


Infrared Thermometer for the Food Industry – HI99550