Exploring The Industrial Digital Probe Thermometer

Digital thermometers are small, but extremely versatile pieces of industrial equipment used for accurate and stable temperature measurements. They are also described as temperature-sensing instruments that feature exceptional portability, permanent probe and convenient digital display.

The high versatility level of the digital probe thermometer comes from its wide range of applications. Thus, this special tech tool can be frequently seen in many industries, but mostly in the food industry for measuring food storage temperature, verifying cooking and storage temperature, validating the temperature of an incoming food product, measuring food reheating temperatures and confirming hot/cold holding cabinet temperatures.

Several criteria play a role in the selection of the right digital probe thermometer, including type, output options, display options and operating environment. When it comes to type, the digital probe thermometer falls under three main categories:

  • Resistance Temperature Detector – Commonly made out of platinum, the resistance temperature detector features wire winding (or other thin film serpentine) that exhibits changes in resistance with different changes in the temperature. The RTD's components are normally enclosed in a sheath of metal and surrounded by an insulator.
  • Thermocouple – The thermocouple probes are known to be extremely accurate and highly sensitive to even smallest temperature changes, as they have a quick response to the environment. Thermocouples feature a pair of dissimilar metal wires or metal alloys welded together. One of the greatest advantages of this model of digital probe thermometer is its well-suitability for automated measurements – both durable and inexpensive.
  • Thermistor – It is known as the most sensitive temperature sensor available on today's market. In fact, this is a semiconductor device that provides electrical resistance proportional to the temperature. The thermistor is further divided as: Negative Temperature Coefficient (NTC) thermistor and Positive Temperature Coefficient (PTC) thermistor.

Latest editions of digital probe thermometers come in high-end designs and specialty features, such as:

  • Recording of minimum/maximum values;
  • Ability to perform statistical and math functions;
  • Data collection or datalogger capabilities;
  • Self-test or diagnostic capabilities;
  • Internal timers and counters;
  • Battery-powered

As the need for digital probe thermometers is progressively increasing, we can see this functional small tech device used in other areas, like medicine (laboratories), metherology and of course, households.