Digital Thermometers & Humidity Meters | SL

Temperature & Humidity

Choose digital thermometers, infrared thermometers and humidity meters for production checks, maintenance, laboratory work and indoor environmental measurements. SL Measurement offers Anritsu and Sato instruments with different probe arrangements, displays and recording functions.

Start with the measurement task: surface temperature, internal temperature or the temperature and relative humidity of the surrounding air.

Digital thermometers for contact measurement

A contact thermometer uses a compatible probe to measure the target. The Anritsu HR series handheld digital thermometer offers Type K or Type E thermocouple models, with different display and memory functions.

Select the probe alongside the instrument. Surface shape, insertion depth and access affect which sensing arrangement is suitable. Confirm the thermocouple type and connector before reusing an existing probe.

Browse our temperature probes for surface, immersion and other contact measurement tasks. Check whether the selected thermometer includes a probe or requires one to be ordered separately.

Infrared thermometers for surface checks

An infrared thermometer measures surface temperature without touching the target. The Sato SK-8950 infrared thermometer includes adjustable emissivity and a circular laser marker to assist positioning.

Check the measurement distance, target size and surface material before selecting an instrument. Infrared readings represent the surface; use a suitable insertion probe when the temperature inside a material is required.

Humidity meters and thermohygrometers

A thermohygrometer measures air temperature and relative humidity together. These instruments support routine checks in rooms, storage areas and workspaces where both readings matter.

The Sato Highest II temperature and humidity meter combines a humidity dial with a digital temperature display. When comparing instruments, consider the measuring range, readability, sensor location and whether minimum/maximum readings or alarms are needed.

Which functions do you need?

  • Routine spot checks: A clear display and a probe suited to the target.
  • Inspection records: Stored readings or a printing thermometer, depending on how results are documented.
  • Wet working conditions: An appropriate protection rating for the instrument, probe and connection.
  • Room temperature and humidity: A thermohygrometer with suitable range, accuracy and display visibility.
  • Continuous measurement history: A data logger or monitoring system selected for the recording interval and duration.

For ongoing records or connection to a control system, explore our temperature and humidity recorders, data loggers and transmitters.

Help choosing a thermometer or humidity meter

Tell us what you need to measure, the expected range and the accuracy required. For temperature measurements, describe the target material and how the probe will reach it. For humidity measurements, include the installation location and expected air conditions.

If replacing an instrument, send the full model code and existing probe reference. Include any requirements for memory, alarms, printed records or calibration documentation.

Contact SL Measurement for selection assistance, pricing and availability.

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Measure stationary surface temperatures with Anritsu A Series contact probes. Select the head size, guard and shaft arrangement to suit the measurement point and operating temperature.

  • Head diameters: 27 mm, 15 mm or 12 mm.
  • Temperature range: From -50°C, with upper limits of 200 to 800°C depending on construction.
  • Thermocouple: Type K or Type E.
  • Configuration: Multiple shaft shapes, lengths, cable and connector options.

Need help maintaining surface contact as the holding angle changes? Compare the Anritsu AX Series flexible-head surface probe.

The Anritsu ACS II series provides controlled temperature sources for calibrating and checking contact temperature probes. Choose a dedicated surface calibrator, an internal probe calibrator or a combined system to suit your measurement work.

  • Surface calibration: ACS II-1000 to 300°C and ACS II-2000 to 500°C.
  • Internal probe calibration: ACS II-3000 to 500°C.
  • Combined capability: ACS II-4000 for surface and internal probes to 500°C.

The Anritsu AM-9000 series temperature datalogger records measurements across 6 or 12 channels, with fixed thermocouple and multi-input models available. Store readings in internal memory and transfer them to a PC through USB using optional AMS-950 analysis software.

  • Choose your configuration: AM-9000, AM-9100, AM-9200 or AM-9300.
  • Recording capacity: 120,000 readings.
  • Power options: AA batteries or an optional AC adapter.

AMS-950 software is sold separately.

The Anritsu AP-400 and AP-450 printing thermometers produce temperature records directly at the measurement point. Use manual printing for inspection rounds or interval printing to follow temperature changes.

  • Built-in printer: Print readings with time information.
  • Memory: Store up to 100 readings for batch printing.
  • Model choice: AP-400 with ASP connector or AP-450 with ANP connector.
  • Probe selection: Match the fixed thermocouple type and connector; probes are sold separately.

The Anritsu AR-6500 series combines non-contact infrared measurement with a Type K contact thermometer input. Use a compatible contact probe as a reference for automatic emissivity setting.

  • Temperature options: -50 to 500°C or 0 to 1200°C, depending on model.
  • Small measurement area: Defined optics for checking individual surface targets.
  • Output options: AR-6501 versions provide a 1 mV/°C analog output.
  • Contact probes: Selected separately to suit the application.

Anritsu AX Series surface temperature probes with a flexible contact-support head for stable measurement on stationary surfaces.

  • Temperature range: Up to -50°C to 800°C depending on head construction.
  • Flexible head: ±4° movement for improved surface contact.
  • Thermocouple: Type K or Type E.
  • Configuration: Select head size, guard, pipe shape, length, cable and connector.

Anritsu BC Series needle probes for measuring the internal temperature of food, liquids and semi-solid materials.

  • Waterproof: IPX5 construction for washing under running water.
  • Temperature range: Up to -200°C to 300°C depending on model.
  • Thermocouple: Type K or Type E.
  • Configuration: Select probe diameter, length, coating, cable and connector.

Anritsu BR Series flexible low-temperature probes for measuring air, liquids and semi-solid materials in cold and controlled environments.

  • Temperature range: -100°C to 200°C.
  • Thermocouple: Type K or Type E.
  • Response time: Approx. 1.5 seconds.
  • Configuration: Select thermocouple length, tape length, cable and connector.

Measure the internal temperature of liquids and semi-solid materials with Anritsu BS Series temperature probes. Choose a fine sleeve-type probe or a grip-type assembly according to the measurement depth, access and handling requirements.

  • Thermocouple: Type K or Type E.
  • Probe diameter: 0.9–5.0 mm, depending on model and coating.
  • Temperature range: -200°C to 200°C, 300°C or 500°C, depending on construction.
  • Configuration: Select probe length, fluororesin coating, cable and connector.

Measure temperature inside semi-solid materials with Anritsu BT Series needle temperature probes. Choose the needle diameter, length and tip shape to suit the measurement depth and material being tested.

  • Thermocouple: Type K or Type E.
  • Temperature range: -200°C to 210°C, 300°C or 500°C, depending on model.
  • Needle options: Fixed or replaceable construction, with cut or sharp tips.
  • Spare parts: BTN replacement needles for compatible BT-3 to BT-8 models.

Measure small stationary surfaces with Anritsu CS Series micro surface temperature probes. Choose the sensing head, shaft arrangement and connector to suit the measurement point and your thermometer.

  • Head sizes: 3 mm, 4.2 mm or 6 mm diameter, and 2 × 10 mm rectangular options.
  • Temperature range: -50 to 400°C, or -50 to 600°C for CS-7 models.
  • Thermocouple: Type K or Type E.
  • Configuration: Straight or angled shaft, with grip and gripless options.

The Anritsu FL Series fiber optic thermometers measure temperature in microwave, high-frequency and high-voltage environments where conventional electrical sensors can be difficult to use.

  • Model options: FL-2000 with one channel or FL-2400 with four channels.
  • Probe selection: Dedicated fiber optic probes for different temperatures, materials and operating conditions.
  • Integration: Analog temperature output and RS-232C communication.
  • Configuration: Temperature probes are selected separately and are not included with the instrument.

The Anritsu HD series handheld digital thermometers are discontinued and have been replaced by the Anritsu HR series .

For a replacement, match the instrument to your thermocouple type, probe connector and measurement requirements.

  • Existing instrument: Provide the complete HD model number, including the E or K suffix.
  • Probe connection: Confirm ASP or ANP connector type.
  • Required functions: Specify memory, alarm, output or water-resistance requirements.

The Anritsu HR series handheld digital thermometer offers Type K or Type E thermocouple models for contact temperature measurement. Choose from basic, standard, LED-display and memory versions, then match the instrument with a probe suited to your application.

  • Model choices: HR-1100/1150 through HR-1750.
  • Probe connections: ASP or ANP, depending on model.
  • Application options: Selected models offer IPX5-equivalent water resistance; HR-1500/1550 models provide memory recording.

Temperature probes are sold separately.

Attach an Anritsu MG Series magnetic temperature probe to a suitable stationary metal surface for contact temperature measurement. Built-in magnets hold the sensing head in position, reducing the need to maintain pressure by hand.

  • Surface: Stationary, magnetically receptive metal.
  • Temperature range: -50°C to 250°C or 400°C, depending on model.
  • Thermocouple: Type K or Type E.
  • Head options: Rectangular 27 × 32 mm, circular 14 mm or compact 8 mm configurations.

Anritsu ST and STN Series flexible flat-leaf temperature probes for surface attachment, narrow spaces and temperature distribution measurement.

  • Temperature range: Up to -50°C to 400°C depending on coating and tape length.
  • Thermocouple: Type K or Type E.
  • Construction: Standard or narrow tape with sharp or flat tip.
  • STN Series: Replaceable tape-type sensing elements.

Anritsu SX Series high-accuracy surface temperature probes with a flexible contact-support head for stable measurement on stationary surfaces.

  • Temperature range: -50°C to 300°C or -50°C to 800°C.
  • Flexible head: ±4° movement for improved surface contact.
  • Response: 1 second to 99% response.
  • Thermocouple: Type K or Type E.

Measure moving and rotating surface temperatures with Anritsu U and UX Series contact probes. Select the head, guard or wheel arrangement to suit the surface profile, temperature and operating conditions.

  • U series: Moving-surface probes with multiple head and mounting configurations.
  • UX series: Contact-support head that helps maintain contact during measurement.
  • Thermocouple: Type K or Type E.
  • Temperature: -50°C to 200°C or 250°C, depending on construction.

Anritsu UX Series flexible-head temperature probes for measuring moving and rotating surfaces with stable contact during measurement.

  • Temperature range: Up to -50°C to 250°C depending on configuration.
  • Surface speed: Up to 24 km/h or 36 km/h depending on head size.
  • Thermocouple: Type K or Type E.
  • Head movement: 360° movement with contact-support function.

The Anritsu WE Series measures stationary surface temperatures using a self-supporting probe placed on the measurement target. Select the probe configuration to suit the surface, temperature and connected thermometer.

  • Contact measurement: Sensing element rests against the target surface.
  • Self-supporting design: For suitable surfaces where the probe can remain stable during measurement.
  • Configuration: Confirm the complete model code, thermocouple type, cable and connector.

Dickson circular chart recorders provide a paper record of temperature, humidity, pressure or external transmitter signals, depending on the model. Select the recorder by measurement type, chart size, recording period and installation requirements.

  • Temperature and humidity: KT8 and TH8 models for temperature-only or combined temperature and relative humidity recording.
  • Pressure: PW4 and PW8 families with 4-inch or 8-inch circular charts.
  • Universal input: Legacy ET855 recorder information for existing voltage and current signal installations.
  • Replacing an older recorder? Refer to the model comparison below before ordering a replacement or consumables.

Dickson OCEAView™ brings wireless environmental monitoring, alarm notifications and traceable records into one platform. Monitor temperature, humidity and other critical parameters using compatible data loggers and sensors for refrigerators, freezers, laboratories, pharmaceutical storage and cold rooms.

  • Connected monitoring: LoRaWAN and Bluetooth logger options for fixed equipment and mobile applications.
  • Actionable alerts: Email, SMS and voice notification options for excursions and technical alarms.
  • Traceable records: Audit trails, measurement history and reporting tools.
  • Deployment choice: Cloud or on-premises software.

The Dickson TWP touchscreen data logger displays readings and measurement history on an 8-inch colour screen. Configure it for temperature, humidity or differential pressure monitoring using compatible replaceable sensors.

  • Local monitoring: Touchscreen display with audible and visual alarms.
  • Data access: USB download and Wi-Fi/Ethernet connectivity.
  • Remote monitoring: DicksonOne cloud access and notification features require the appropriate subscription.

The EDL CRYO-CAL-2 cryostat provides a low-temperature environment for comparison calibration of temperature sensors. Liquid nitrogen supplies the cooling, with a standard block accommodating up to four sensors.

  • Temperature range: -196 to 0°C.
  • Cooling: Liquid nitrogen, without a compressor refrigeration system.
  • Sensor arrangement: Four wells with tubes and spacer options.
  • Current manufacturer designation: CRYO-CAL-2-LI; confirm configuration when ordering.

EDL SBB Single Black Body infrared calibrators for checking handheld and installed IR thermometers and pyrometers.

  • Models: SBB-1, SBB-2 and SBB-3.
  • Temperature coverage: -30°C to 650°C across the series.
  • Target: 2" diameter black body with 0.986 emissivity.
  • Use: Laboratory, quality control and field calibration of infrared instruments.

EDL Ultra Bath stirred liquid temperature calibrators for stable comparison calibration of thermometers and temperature probes.

  • Models: UB-4010, UB-1020 and UB-2050.
  • Temperature coverage: -40°C to 550°C across the series.
  • Bath capacity: 42 litres with an 18" deep tank.
  • Suitable for: RTDs, PRTs, SPRTs, thermometers and insertion temperature probes.

The Evikon E2218-DM duct humidity and temperature transmitter measures air conditions inside ventilation ducts and provides calculated dew point and absolute humidity values.

  • Duct installation: 200 mm insertion probe.
  • Analog signals: Two configurable outputs, selectable as 4–20 mA or 0–10 V.
  • Digital communication: RS485 Modbus RTU.
  • Protection: IP65-rated transmitter enclosure.

The Evikon E2244 humidity and temperature transmitter measures relative humidity and air temperature for connection to controllers, monitoring instruments and building management systems.

  • Measurements: Relative humidity and temperature in air and non-aggressive gases.
  • Analog outputs: 2 × 4–20 mA and 2 × 0–10 V.
  • Construction: IP65-rated enclosure.
  • Mounting: E2244 wall-mount and E2244-DM duct-mount versions.

The Isuzu TH27R (TH-27R) thermohygrograph is discontinued. For a replacement temperature and humidity chart recorder, choose the Sato NSII-Q (Sigma II).

  • Replacement options: Sato 7210-00 or 7211-00, depending on the temperature range required.
  • Paper recording: Records temperature and relative humidity on a rotating chart.
  • Before ordering: Confirm the recording period and matching chart paper.

View the Sato NSII-Q replacement

Monnit ALTA Soil Moisture Sensor measures soil moisture tension & soil temperature within the soil. It uses a resistive granular matrix element to accurately measure the matric water potential (soil moisture tension) in the soil and a thermistor based temperature element to measure temperature.

- Safe to use in both hot & freezing temperatures
- Reports matric potential (soil water tension) 
- Moisture readings in centibar & kPa
- 0 to 240 centibar (kPA)
- Will not dissolve in soil
- Internally compensated for commonly found salinity levels
- Easy to install and use compared to traditional tensiometers
- Stainless steel electrodes
- No maintenance required
- Temperature readings in C/F.
- 5 ft removable lead 



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Monnit ALTA® Wireless Thermocouple Sensors leverage Monnit’s award-winning remote monitoring platform to remotely monitor high-temperature applications, such as commercial ovens, kilns, and chimneys. Users benefit from a wireless data transmission range of 1,200+ ft, bank-grade security, and a temperature range of up to 400°C (752°F).

Monnit’s thermocouple is user-programmed to sleep for a specified interval, awake, capture analog data, and then convert this measurement into a temperature. If the sensor captures temperatures outside of user-specified thresholds, an alert is sent via text, email, or call. Monnit’s hardwired thermocouples feature a needle-style probe at the end of a 6’ lead (a K-Type Quick Connect Thermocouple is also available).



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Anritsu MW series probes are ideal for measuring the temperatures at the surface of moving wires. Specific components may be combined to customize products for the needs of a customer's specific application.

Palmer Wahl pressure and temperature chart recorders provide a paper record of measurements over time. Choose an 8-inch or 12-inch recorder with an aluminium or Pelican® case, configured for pressure, temperature or combined recording.

  • Recording options: Up to three pens, depending on configuration.
  • Chart drives: Battery-operated, with spring-wound and electric options available.
  • Installation: Portable and fixed-mount configurations.

The Sato Highest II 7542-00 temperature and humidity meter combines a humidity dial with a digital temperature display for straightforward checks of indoor conditions.

  • Humidity measurement: Human hair sensor, covering 20 to 100% RH.
  • Temperature measurement: Thermistor sensor, covering 0 to 50°C.
  • Wall mounting: Bracket supplied for installation.
  • Simple power supply: Digital thermometer operates on one AA battery.

Sato Mini-Cube 7008-00 compact thermohygrograph for continuous 7-day recording of temperature and relative humidity.

  • Temperature range: -15°C to 40°C.
  • Humidity range: 5 to 100%RH.
  • Recording: 7-day circular chart.
  • Supply: One AA battery with 55 charts included.

The Sato NSII-Q Sigma II thermohygrograph records temperature and relative humidity together on a rotating paper chart. Its quartz-driven mechanism provides a visible measurement history for routine environmental checks.

  • 7210-00: temperature range -15 to 40°C.
  • 7211-00: temperature range -10 to 50°C.
  • Humidity: 0 to 100% RH, non-condensing.
  • Recording periods: selectable 1, 7 or 32 days.

The Sato PC-5410TRH digital thermohygrometer displays indoor temperature and relative humidity on a large screen, with maximum and minimum readings visible alongside current measurements.

  • Measurement: 0.0 to 50.0°C and 20.0 to 95.0% RH.
  • Alarms: Adjustable upper and lower limits with buzzer and LED indication.
  • Installation: Wall mounting or desktop placement.
  • Replacement model: PC-5410TRH replaces the discontinued PC-5400TRH.

The Sato SK-1260 digital thermometer combines portable temperature measurement with stored readings and high/low alarms. Dedicated Type K thermocouple and thermistor probes support different measurement tasks.

  • Splash-resistant: IPX4 protection for everyday handling around wet work areas.
  • Memory: Store up to 180 readings manually or 120 readings automatically.
  • Temperature alarms: Set upper and lower limits for audible notification.
  • Standard probe set: Supplied with the SK-S100K Type K probe; other probes are optional.

The Sato SK-170GT WBGT heat stress monitor measures air temperature, humidity and globe temperature to calculate the Wet Bulb Globe Temperature index. Its portable design supports heat condition checks at workplaces, construction sites and sports facilities.

  • Black globe sensor: accounts for radiant heat in the measurement.
  • Indoor and outdoor modes: selectable WBGT calculation settings.
  • Practical monitoring functions: adjustable WBGT alarm, MAX/MIN readings and display hold.

The Sato SK-270WP-K waterproof digital thermometer replaces the SK-250WP for routine temperature checks in food preparation, production and laboratory work.

  • Standard probe included: S270WP-01, measuring from -40 to 250°C.
  • IP67 protection: Dustproof and waterproof body when the probe is correctly connected.
  • Simple operation: Display hold and automatic power-off.
  • Probe selection: Dedicated S270WP probes for different measurement tasks.

Check surface temperatures without contact using the Sato SK-8950 infrared thermometer. Its circular laser marker helps position the measurement, while IP54 protection supports handling with wet hands.

  • Wide measuring range: -60 to 550°C with 0.1°C resolution.
  • Adjustable emissivity: 0.10 to 1.00 for different surface materials.
  • Practical inspection functions: MAX, MIN, average, temperature difference and high/low alarms.

The Sato SK-L200THIIα temperature and humidity datalogger is discontinued and has been replaced by the Sato SK-L750 series. For recording both temperature and relative humidity, select the SK-L754 with a suitable probe.

  • Existing equipment: Also identified as SK-L200THIIa or SK-L200THII alpha.
  • Temperature and humidity replacement: SK-L754.
  • Temperature-only alternative: SK-L751.
  • Probe selection: Specify the required measurement range and sensor position when replacing your logger.

Monitor four measurement points with the Sato SK-L400T 4-channel temperature data logger. Connect Type K thermocouple probes, view all four readings together and record temperature data to an SD card.

  • Four-channel display: Compare temperatures on one backlit LCD.
  • Flexible recording: Select logging intervals from 1 second to 90 minutes.
  • Channel alarms: Set individual upper and lower temperature limits.
  • Probe selection: Thermocouple probes are purchased separately.