Heat Sensors | McMaster-Carr

Filter by

Maximum Temperature

Less than 500° F

500° F to 999.9° F

1,000° F to 1,999.9° F

2,000° F to 2,999.9° F

Thermocouple Type

Mount Type

Probe Length

Thermocouple Sensor Connection

Bluetooth

Flat-Pin Mini Thermocouple Connector

Round-Pin Thermocouple Connector

For Use With

Thermocouple Connection Heads

Thermometer Type

Measurement Unit

Probe Diameter

Display Type

Minimum Temperature

REACH

RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Stem Length

Connection Location

Pipe Size

Dial Diameter

Housing Material

Thread Type

Adjustability

Cable Length

Graduations

Stem Diameter

Maximum Pressure @ Temperature

4,188 Products

Most Likely Products

Heat Detectors

Signal your control panel when the temperature rises above a set level

4 products

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

511 products

Thermocouples

Measure and transmit liquid, gas, and surface temperature

719 products

Noncontact Temperature Sensors

Monitor the temperature of hazardous, sensitive, and hard-to-reach materials without touching them

22 products

Fusible Link Switches

Use as a safety switch to shut off hydraulic equipment and other machinery when the link melts

5 products

HVAC Flame Detectors

Replace flame detectors in HVAC equipment such as furnaces, ovens, water heaters, and boilers

1 product

All Results

Safety Equipment

Heat Detectors

Signal your control panel when the temperature rises above a set level

4 products

Heat Stress Monitors

Measure temperature, humidity, and radiant heat to keep people safe from heat-related hazards

4 products

Measuring and Inspecting

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

511 products

Thermal Cameras

Detect hot spots, leaks, moisture problems, and construction defects invisible to the eye

6 products

Temperature-Indicating Sheets

Stick to surfaces and the color changes as the temperature rises and falls

8 products

Temperature Crayons

Less messy than liquids, draw marks that melt as surfaces reach a specific temperature

75 products

Humidity Meters

Measure relative humidity without complex calculations

4 products

Temperature-Indicating Liquids

Brush onto surfaces and markings melt when they reach a specific temperature

21 products

Combustion Analyzers

Measure boiler and furnace combustion efficiency

1 product

Humidity-Indicating Cards

Check humidity levels of moisture-sensitive inventory and equipment at a glance

9 products

Temperature and Humidity Meters

Simultaneously measure temperature and relative humidity

13 products

Humidity-Indicating Plugs

Monitor humidity in sealed containers without opening them, protecting the inside from contamination

6 products

Test Lead Sensors

Adapt Fluke multimeters to take temperature readings, so you don't need a separate meter

2 products

Electrical Resistance Meters

Prevent damage to electronics by checking that surfaces won't discharge static electricity

4 products

Multimeters

Take current, voltage, resistance, and other electrical measurements

39 products

Oscilloscope/Multimeters

Perform electrical tests, record data, and view a graph of electrical waveforms

4 products

Monoculars

Magnify still objects from far away to view features you couldn't see with the naked eye

1 product

Vibration Monitors

Mount to your machine to continuously monitor vibration and ensure it stays within the proper range

5 products

Light Meters

Measure light quality and intensity

2 products

Wristwatches

Display the time, date, and smart functions on your wrist and keep your hands free

2 products

Barometers

Measure atmospheric pressure changes

8 products

Weather Stations

Measure multiple weather conditions at the same time

3 products

Data Recorders

Log temperature, humidity, or pressure levels to track changes and troubleshoot your system

56 products

Airflow Meters

Measure airflow in duct, air filters, exhaust hoods, and other air applications

18 products

Data Recorder Charts

Place in temperature and humidity data recorders to document readings over time

16 products

Fluid Handling

Thermocouples

Measure and transmit liquid, gas, and surface temperature

719 products

Thermocouple Transmitters

Check system temperatures from your smartphone or tablet

9 products

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

145 products

Thermocouple Connector Adapters

Convert round-pin male connectors to flat-pin male connectors

10 products

Thermocouple Connector Covers

Shield thermocouple connectors from dust and debris

1 product

Noncontact Temperature Sensors

Monitor the temperature of hazardous, sensitive, and hard-to-reach materials without touching them

22 products

Temperature Switches

Turn heating equipment on or off at a specified temperature

137 products

Temperature and Humidity Transmitters

Regulate heating and cooling by sending temperature and humidity levels to PLCs and controllers

3 products

Thermocouple and RTD Protection Tubes

Shield thermocouple and RTD probes in large, unpressurized tanks

16 products

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

134 products

RTD Transmitters

Send temperature readings from RTD probes in containers, tanks, and pipes to switches and PLCs

10 products

RTD Connectors

Attach plug-in connectors to RTD probes with wire leads

2 products

Thermowells

Prevent damage to thermometers and temperature probes in pressurized tanks and pipelines

115 products

Thermocouple and RTD Fittings

Alter probe immersion depth or adapt unthreaded connections for use with threaded tanks and heads

50 products

Pressure Gauges

Measure pressure in pumps, filters, regulators, and process lines

5 products

Water Detector Sensors

Place near tanks, sump pumps, and pipe lines to alert you to water leaks

1 product

Pressure and Vacuum Gauges

Measure pressure and vacuum in air and fluid lines, pumps, and refrigeration systems

2 products

Electrical

Fusible Link Switches

Use as a safety switch to shut off hydraulic equipment and other machinery when the link melts

5 products

Development Board Sensor Modules

Transform your development board into everything from an airflow monitor to a motion detector

4 products

Light Switch Sensors

Automatically turn lights on and off when you enter and exit rooms

48 products

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

31 products

Heating, Ventilation, and Air Conditioning

HVAC Flame Detectors

Replace flame detectors in HVAC equipment such as furnaces, ovens, water heaters, and boilers

1 product

Fabricating and Machining

3D Printer Extruder Heating Elements

Replace your entire heating element, or switch it out to print at higher speeds or temperatures

13 products

Temperature Sensors for 3D Printer Extruder Heating Elements

Measure heating block temperature and send it to printer controllers

2 products

Communication

Labels

Stick onto items to identify or convey information about them

106 products