Temperature Sensors | McMaster-Carr

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Mount Type

System of Measurement

Maximum Temperature

1,000° F to 1,999.9° F

2,000° F to 2,999.9° F

Probe Length

For Use With

Thermocouple Connection Heads

Thermocouple Type

Material

Alnico

Aluminum

Benzoic Acid Isoamyl Ester

Probe Diameter

Pipe Size

Electrical Connection

2-Pin Pin-and-Housing Connector

Flat-Pin Mini Thermocouple Connector

M12

Qwiic

Round-Pin Thermocouple Connector

Thermocouple Sensor Connection

Bluetooth

Flat-Pin Mini Thermocouple Connector

Round-Pin Thermocouple Connector

Thread Type

Minimum Temperature

Thermometer Type

Display Type

Probe Material

Measurement Unit

Cubic Meters per Hour

Pounds per Square Inch

Relative Humidity

Standard Cubic Feet per Minute

Cable Length

Probe Connection Pipe Size

1/8

1/4

1/2

Number of Wires

RTD Probe Resistance

100 ohm

1,000 ohm

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

2,564 Products

Fluid Handling

RTDs

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

144 products

Thermocouples

Measure and transmit liquid, gas, and surface temperature

720 products

Thermocouple and RTD Fittings

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

50 products

Noncontact Temperature Sensors

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

21 products

Thermowells

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

115 products

Temperature Switches

Turn heating equipment on or off at a specified temperature

139 products

Temperature and Humidity Transmitters

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

3 products

RTD Transmitters

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

10 products

Temperature Controllers

Precisely regulate process temperatures; more accurate than temperature switches

95 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

155 products

Thermocouple and RTD Protection Tubes

Shield thermocouple and RTD probes in large, unpressurized tanks

16 products

Thermocouple Connector Covers

Shield thermocouple connectors from dust and debris

1 product

RTD Connectors

Attach plug-in connectors to RTD probes with wire leads

2 products

Thermocouple Connector Adapters

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

10 products

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

19 products

Water Detectors

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

2 products

Pressure Gauges

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

5 products

Flow Switches

Turn equipment on or off when flow rate reaches a set point

12 products

Measuring and Inspecting

Thermometers

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

517 products

Temperature and Humidity Meters

Simultaneously measure temperature and relative humidity

13 products

Temperature Crayons

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

75 products

Thermal Cameras

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

5 products

Temperature-Indicating Liquids

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

22 products

Temperature-Indicating Sheets

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

8 products

Thermometer Cooling Jackets

Connect to a compressed air or water line to keep infrared thermometer transmitters from overheating

1 product

Thermometer Air Purges

Blow dust and moisture off infrared thermometer transmitter lenses

1 product

Thermometer Insulating Tubes

Prevent infrared thermometer transmitters from overheating by shielding them from hot surfaces

1 product

Thermometer Covers

Prevent dirt buildup on infrared thermometer transmitters

1 product

Humidity Meters

Measure relative humidity without complex calculations

4 products

Humidity-Indicating Cards

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

9 products

Humidity-Indicating Plugs

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

6 products

Data Recorders

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

56 products

Data Recorder Charts

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

16 products

Barometers

Measure atmospheric pressure changes

6 products

Test Lead Sensors

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

2 products

Weather Stations

Measure multiple weather conditions at the same time

9 products

Thickness Gauges

Move the thumb lever to quickly check the thickness of flat stock, pipe, or tubing

6 products

Airflow Meters

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

21 products

Vibration Monitors

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

3 products

Chemistry Meters

Take water-chemistry measurements more precisely than test strips and swabs

9 products

Light Meters

Measure light quality and intensity

2 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

Thermostats

Connect to heaters, fans, and air conditioners to control the temperature

72 products

Temperature-Controlled Outlet Adapters

Automatically turn heating and cooling devices on and off as temperatures rise and fall

3 products

Fabricating and Machining

Temperature Sensors for 3D Printer Extruder Heating Elements

Measure heating block temperature and send it to printer controllers

4 products

Communication

Labels

Stick onto items to identify or convey information about them

106 products

Electrical Power, Networking, and Controlling

Development Board Sensor Modules

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

4 products

Terminal Blocks

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

31 products

Safety Equipment

Heat Stress Monitors

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

9 products