Thermometers, Humidity Meters & Dataloggers

About Thermometers, Humidity Meters & Dataloggers

It's easier than ever to measure temperature thanks to fantastic innovations. Infrared, non-contact thermometers are rapidly becoming much more popular, while traditional thermal equipment, such as temperature probes, continue to be extremely useful.

If you require a solution for testing temperatures, we're extremely confident that you'll find the right product on this site. We stock everything, from the aforementioned infrared thermometers to data loggers that record temperatures without user input.

Those working in temperature-controlled environments will find great use in data-logging thermometers. These handy devices are user-programmable and often clip to surfaces to warn you of sudden spikes or drops in temperature by using audible or flashing LED alarms. They're an essential purchase for the food production industry where things have to be kept at the optimal temperature, and they're also perfect for extremely hot environments where sudden spikes in temperature could be hazardous for personnel.

Not everyone is working on the same budget, and that's why we're committed to bringing you the widest range of thermometers at the very best prices. We also stock only the best test equipment in the world from trusted suppliers such as Extech, Amprobe, and the industry-leading manufacturer Fluke, so you can rest assured that our products are extremely high quality.

Tester's range of humidity testers comes from industry-leading suppliers around the globe, providing excellent readings and testers that don't break the bank due to our low prices. We also stock a range of thermal accessories which are designed to complement many other forms of thermal equipment.

Popular Products

• Fluke 62 MAX Infrared Thermometer: Quick, accurate and reliable measurements of surface temperatures without direct contact. For even higher accuracy, a broader temperature range and several other additional advantages, consider the Fluke 62 MAX+.

• Extech TM100 Type K/J Single Input Thermometer: A portable and lightweight tester that can perform using a connected type K or J thermocouple. Includes a large backlit LCD screen, a built-in data hold function, and can also show MIN/MAX/AVG readings.

• ETI Thermapen One: These Thermapen One thermometers deliver an elegant combination of speed, accuracy, and convenience while delivering the capability of measuring temperatures over the range of -49.9 to 299.9 °C. Available in white, green, orange, black, grey, yellow, red, pink, purple, or blue.

• Comark PDT300 Pen-Style Pocket Food Digital Thermometer: A compact, lightweight, and pen-size thermometer that responds in under 6 seconds. Measures core food temperature from -50 to 150°C, is fully waterproof, has a data hold function, and is certified by the NSF.

• Testo 925 Single Channel Thermometer: This Single Channel Thermometer accepts both type J and K inputs, with a constant display of MAX/MIN values, and has a built-in audible alarm function with adjustable values. It is compatible with the Testo Smart App and includes a fast-reaction probe with an insulated cable.

• Beha-Amprobe TMD-50 Dual-Input Type K Thermocouple Thermometer: Records temperature levels from two points together! It can also switch between Celsius/Fahrenheit measurement modes and has automatic power off and MIN/MAX measurement modes. The large backlit LCD provides effortless readability of your measurements.

• TestSafe Medical Forehead and Body Temperature Infrared Thermometer: This non-contact IR thermometer complies with various medical standards. It has Surface and Body/Forehead modes to help identify a person's temperature, automatically saving the data to the device's memory. It also includes a user-settable alarm function with an audible alert and a configurable Temperature Difference function.

• TPI 306C Pocket Digital Penetration Thermometer: A low-cost, compact, and user-friendly tool with a 4.9-inch probe, measuring temperatures from -58 to 300°F (-50 to 150°C) in just 1.5 seconds, featuring an easy-to-read LCD, data hold, and auto-off function.

• Anton Magna Therm Magnetic Dial Thermometer: A small-size, analogue, magnetic needle-style thermometer suitable for radiators and pipes. Capable of recording temperatures between 0 to 120°C (32 to 250°F).

• Testo 810 Infrared/Air Temperature Thermometer: Effortlessly track differences caused by hot objects as the 810 automatically calculates air temperature while determining the difference between the two values. Tiny in size and capable of fitting in your pocket!

• Comark DRF1 Digital Refrigerator / Freezer Thermometer: Can tolerate temperatures down to -22°F to (-30°C) with an accuracy of ±1°C / 2°F. With its IP65 rating for dust and water resistance with NSF certification, the DRF1 offers exceptional value for reliable temperature monitoring in cold environments.

• Comark EOT1K Economy Oven Thermometer: Measures internal temperatures of glass door ovens, ensuring perfect baking, roasting, and broiling. With a temperature range of 50 to 300°C (100 to 600°F) and accuracy of ±1 division, it can stand or hang effortlessly in any oven.

• TM Electronics Compact Legionella Kit: These kits include an integral timer and a choice of K Type probes. They're ideal for water temperature testing to aid legionella prevention. Each kit provides a rubber boot for extra protection against damage. CLEGK1, CLEGK2, and CLEGK3 models are available.

• Digitron FM25 Wireless Digital Thermometer: Equipped with wireless technology and remote RF sensors, the FM25 can monitor and display food temperatures without opening the refrigerator door. The digital readout updates every eight minutes and alerts the user when limits have been present for over fifteen minutes.

• Fluke 971 Temperature Humidity Meter: Simultaneously measure air temperature and humidity! Includes a backlit screen, built-in memory (store up to 99 individual records), MIN/MAX/AVG functionality, and calculates dew point and wet bulb.

• Extech HT30 Heat Stress WBGT (Wet Bulb Globe Temperature) Meter: Determine how hot it feels when humidity levels combine with temperature, air movement and radiant heat levels. You can also monitor the effects of direct solar radiation upon an exposed surface with Black Globe Temperature (TG) mode.

• Protimeter Hygromaster 2 Thermo-Hygrometer: This instrument can record humidity and non-contact IR temperature readings, conduct psychrometric calculations, and log data. Two versions are available, one with a HygroStick and one with a QuickStick humidity sensor.

• FilesThruTheAir EL-USB-2-LCD Temperature/Relative Humidity Datalogger: Measures humidity from 0 to 100% and has a built-in high contrast LCD screen. It is protected against moisture to IP67 when the included protective cap is attached. A high-accuracy model is also available.

• Chauvin Arnoux CA1823 Datalogging Pt100 and Pt1000 Thermometer: AA single-input and simplistic data-logging digital thermometer. The device is compatible with the Pt100 and Pt1000 resistance probes. It stores up to 1 million individual records in the internal memory and has an exceptionally long battery life.

• Extech WTH600-E-KIT Wireless Weather Station: The station includes an indoor wireless base station and an outdoor wireless transmitter. It monitors indoor temperatures, humidity and external weather conditions. The kit features five integrated sensors and measures gusts and average wind speed in mph, m/s, km/h or knots.

• FilesThruTheAir EL-USB-VAC Vaccine Monitoring Temperature Data Logger: The data-logger monitors the internal temperatures of vaccines with a temperature range of -40 to +60°C (-40 to 140°F) and accuracy of ±0.1°C (±0.2°F). You can view measurements on the high-contrast LCD and cycle through the most recent, minimum and maximum temperature readings via the push button.

• ETI Type K Thermocouple Penetration Temperature Probe: The probes are terminated with an industry-standard type K thermocouple connector and constructed from high-quality stainless steel. They measure temperatures from -75 to 250°C and respond in less than 3 seconds. Available in two sizes and with either a straight or a coiled lead.

• Thermometer & Datalogger Accessories: We have a wide range of accessories to browse through.

FAQs

• How much data can my thermometer or data logger store before it needs resetting?
  It's essential to consult the manufacturer's specifications to determine how long your device can log data before it requires resetting or data transfer. The information is typically available in the product's datasheet or user manual, which outlines the exact storage limits and how often data needs to be offloaded.

• How accurate are humidity meters for long-term use in environments like museums or archives?
  High-end instruments generally have an accuracy of around ±3% to ±5% relative humidity (RH) when used in mid-range temperatures. Stable and controlled conditions accompanied by regular calibration play an integral contribution in sustaining accuracy.

• Can I use a meat thermometer for other purposes?
  Yes, a meat thermometer can be used for various cooking tasks beyond measuring meat temperatures. It is effective for checking the doneness of baked goods, such as bread or cakes, ensuring they reach the appropriate internal temperature. Additionally, it can be employed for candy-making to achieve precise sugar temperatures or for monitoring the temperature of liquids such as soups and sauces.

• What is the difference between a mercury thermometer and a digital one?
  Mercury thermometers consist of liquid mercury sealed in a glass tube, which expands and contracts with temperature fluctuations. The temperature is displayed on a marked scale. Digital thermometers employ electronic sensors to measure temperature, displaying the results on an LCD screen.

• How do I use a hygrometer to measure humidity?
  Place your hygrometer in a stable location away from direct sunlight and moisture sources, allowing it to acclimate for a few hours. Then read the humidity level displayed on the screen of a digital hygrometer or the dial of an analogue one. For consistent monitoring, check regularly at the same times, and calibrate the hygrometer as needed.

• What are the signs of high humidity in a house?
  Generally, condensation on windows and walls suggests moisture build-up and the presence of mould or mildew, often found in damp corners or hidden areas. A musty odour typically accompanies high humidity, indicating potential mould growth. You might also notice general dampness in the air, discomfort, and visible signs like peeling paint or wallpaper.

• Can humidity meters be used outdoors?
  Yes, they can be used outside but it's essential to choose the right type. Weatherproof models specifically designed for outdoor conditions are available and they often feature cases protecting against moisture and UV exposure.

• What is a datalogger and how does it work?
  It is an electronic instrument that records data over time. It typically consists of sensors to measure specific variables, a microprocessor to process the data, and memory to store the information.

• How do I retrieve data from a datalogger?
  Connect the instrument to your device using the appropriate method. Install any necessary software provided by the manufacturer and open the software. Follow the onscreen prompts to download the logged data and save it in a format like CSV or Excel.

• Can dataloggers be used in extreme temperatures?
  They can be used but their effectiveness depends on the model and its specifications. A lot of data loggers are built to function within a set temperature range, usually from -40°C to +85°C (-40°F to +185°F) or even wider for specialist applications. Always check the manufacturer's specifications for operating limits. Ensure your instrument is calibrated for the intended temperature range, look for features like waterproof or dustproof casings, and be mindful that battery performance may degrade in cold environments.