A digital thermometer is a scientific instrument designed to measure temperature with precision, using a probe to take the temperature and displaying a clear numerical reading, typically accurate to one decimal place, on an LCD screen. This high level of accuracy makes digital thermometers a popular choice, as they are generally more precise than traditional liquid-type glass thermometers.

RS offers an extensive range of high-quality digital instruments from leading brands including Fluke, Testo, Digitron, Hanna Instruments, Comark and of course RS PRO.

We also offer an excellent in-house calibration service if required. See here for more details about our calibration services

How does a digital thermometer work?

A digital thermometer uses internal sensors that produce resistance, voltage or current change when there is a change in temperature. There are 3 main types which are RTD, thermistor or thermocouple. The digital display shows the temperature reading in a clear and precise format, making it easy for users to interpret the results.

Digital thermometer types

Hand-Held thermometers are portable battery-operated devices with additional plugin probes. Probes can vary in type depending on the application. Popular probe types for handheld thermometers include insertion, surface or air probes.

Bench thermometers are used in laboratories and test stations. They are larger and more industrial than handheld units. Bench thermometers typically use thermocouple probes such as type K, J, N, R and T.

Panel and wall-mount thermometers are permanently fixed. They are used for continuous and low maintenance applications.

Fridge and freezer thermometers are used to indicate the temperature in industrial and commercial fridges and freezers. Temperature regulation must be monitored and maintained as a rise in temperature readings could spoil goods

Wireless Thermometers transmit the data to a receiver or a smart device without the need for a physical connection, using Bluetooth, Wi-Fi or radio frequency (RF)

What are the applications for Digital Thermometers?

• Food industry
• Hygiene testing
• Industrial Applications - Industrial Digital Thermometers
• Heating & ventilation
• Scientific research
• Medical testing
• General-purpose temperature monitoring

For more information please see our digital thermometers guide.