Temperature Indicators | McMaster-Carr

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System of Measurement

Maximum Temperature

1,000° F to 1,999.9° F

2,000° F to 2,999.9° F

Thermocouple Type

Mount Type

Measurement Unit

Cubic Meters per Hour

Millimeters of Mercury

Ohms

Pounds per Square Inch

Display Type

For Use With

Thermocouple Connection Heads

Probe Length

Stem Length

Thermometer Type

Connection Location

Pipe Size

Thermocouple Sensor Connection

Bluetooth

Flat-Pin Mini Thermocouple Connector

Round-Pin Thermocouple Connector

Material

Benzoic Acid Isoamyl Ester

Probe Diameter

Minimum Temperature

RoHS

Compliant with Exemptions

Dial Diameter

REACH

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Thread Type

Adjustability

Housing Material

Electrical Connection

2-Pin Pin-and-Housing Connector

Flat-Pin Mini Thermocouple Connector

Round-Pin Thermocouple Connector

Graduations

3,921 Products

Most Likely Products

Thermometers

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

504 products

Labels

Stick onto items to identify or convey information about them

106 products

Temperature Crayons

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

75 products

Temperature and Humidity Meters

Simultaneously measure temperature and relative humidity

13 products

All Results

Measuring and Inspecting

Thermometers

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

504 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

Temperature Crayons

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

75 products

Temperature and Humidity Meters

Simultaneously measure temperature and relative humidity

13 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

Humidity-Indicating Cards

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

9 products

Humidity Meters

Measure relative humidity without complex calculations

4 products

Thermal Cameras

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

7 products

Humidity-Indicating Plugs

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

6 products

Wristwatches

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

2 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

Electrical Resistance Meters

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

4 products

Vibration Monitors

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

7 products

Weather Stations

Measure multiple weather conditions at the same time

9 products

Light Meters

Measure light quality and intensity

2 products

Barometers

Measure atmospheric pressure changes

8 products

Thickness Gauges

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

6 products

Communication

Labels

Stick onto items to identify or convey information about them

106 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

155 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

RTDs

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

144 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

Temperature and Humidity Transmitters

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

3 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

22 products

Thermocouple and RTD Protection Tubes

Shield thermocouple and RTD probes in large, unpressurized tanks

16 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

Liquid-Level Gauges

Monitor fluid levels in containers

49 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

Electrical Enclosure Inspection Windows

View components without exposing them to dust and moisture

6 products

Power Adapters

NEMA connection adapters, outlet adapters, and outlet splitters

3 products

Fabricating and Machining

3D Printer Extruder Heating Elements

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

20 products

Temperature Sensors for 3D Printer Extruder Heating Elements

Measure heating block temperature and send it to printer controllers

2 products

Heating, Ventilation, and Air Conditioning

Thermostats

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

56 products

HVAC Flame Detectors

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

1 product

Safety Equipment

Heat Stress Monitors

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

9 products