Thermometers

Our range includes a wide selection of thermometer types suitable for professional and everyday use, including: Digital thermometers for fast and accurate readings, Infrared thermometers for non-contact surface measurement, Dial and liquid-in-glass thermometers for simple analogue monitoring & Specialist thermometers for catering, industrial and environmental applications.

Whether measuring the internal temperature of food, monitoring cold storage conditions or checking environmental conditions in workplaces, thermometers play a critical role in maintaining safety, quality and compliance.

116 products

Temperature Measurement for Professional and Everyday Use

Temperature measurement is one of the most common forms of monitoring used in science, industry and everyday life. Thermometers use different physical principles to measure temperature, such as thermal expansion, electrical resistance or infrared radiation depending on the design of the instrument.

For example, traditional liquid-in-glass thermometers measure temperature through the expansion of a liquid such as alcohol, while digital thermometers use electronic sensors such as thermistors to detect temperature changes.

In industrial and technical applications, thermometers may use sensors such as thermocouples, thermistors or resistance temperature detectors (RTDs) to provide highly accurate measurements across a wide range of temperatures.

Thermometers are used in many sectors including:

  • Food safety and catering temperature checks
  • Refrigeration and cold storage monitoring
  • Industrial process control
  • Laboratories and scientific testing
  • Healthcare and veterinary temperature measurement
  • Environmental and workplace monitoring

Thermometer Superstore offers a comprehensive selection of thermometers designed to provide reliable temperature measurement across professional, commercial and everyday applications.

Thermometers

What is a thermometer?

A thermometer is a device used to measure temperature, indicating how hot or cold an object, liquid or environment is. It contains a sensor that changes in response to temperature and converts that change into a readable value on a scale or digital display.

How do thermometers measure temperature?

Thermometers measure temperature by detecting physical changes that occur with heat. Different types use different principles, such as:

- Liquid expansion (mercury or alcohol thermometers)
- Electrical resistance changes (thermistors and RTDs)
- Voltage generation between metals (thermocouples)
- Infrared radiation detection (infrared thermometers)

These changes are converted into a temperature reading displayed on a scale or digital screen.

What are the main types of thermometers?

Common thermometer types include:

- Digital thermometers
- Infrared (non-contact) thermometers
- Dial or bimetal thermometers
- Liquid-in-glass thermometers
- Thermocouple thermometers
- Thermistor thermometers

Each type is designed for different temperature ranges and applications.

What is the difference between contact and non-contact thermometers?

Contact thermometers must touch the object or substance being measured, such as probe thermometers used in food safety.

Non-contact thermometers, such as infrared thermometers, measure temperature by detecting thermal radiation emitted from a surface, allowing temperature to be measured from a distance.

Why are thermometers important in food safety?

Thermometers help ensure food is cooked, stored and handled at safe temperatures. Monitoring temperature helps prevent the growth of harmful bacteria and supports compliance with food safety systems such as HACCP.