Temperature Indicators | 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

3,000° F or greater

Less than 250° C

250° C to 499° C

500° C to 999° C

1,000° C to 1,999° C

2,000° C or greater

Thermocouple Type

Display Type

Light Indicator

Mount Type

Measurement Unit

Cubic Meters per Hour

Feet per Minute

Gallons per Hour

Gallons per Minute

Inches of Mercury

Kilometers per Hour

Liters per Minute

Meters per Second

For Use With

Air Conditioners

Molex Micro-Fit 3.0

Hydraulic Fluid

Thermometer Type

Stem Length

Connection Location

Probe Length

Minimum Temperature

-250° F or less

-249° F to 0° F

1° F to 99° F

100° F to 249° F

250° F or greater

-100° C or less

-99° C to -50° C

-49° C to 0° C

1° C to 249° C

250° C or greater

Thermocouple Sensor Connection

Flat-Pin Mini Thermocouple Connector

Round-Pin Thermocouple Connector

Pipe Size

Probe Diameter

REACH

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

Dial Diameter

DFARS Specialty Metals

Adjustability

Housing Material

Stainless Steel

Thread Type

Stem Diameter

Graduations

Lens Material

Overall Height

How can we improve?

3,921 Products

Measuring and Inspecting

Thermometers

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

Temperature Crayons

Temperature Crayons

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

Temperature and Humidity Meters

Temperature and Humidity Meters

Simultaneously measure temperature and relative humidity

Temperature-Indicating Liquids

Temperature-Indicating Liquids

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

Temperature-Indicating Sheets

Temperature-Indicating Sheets

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

Thermal Cameras

Thermal Cameras

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

Humidity-Indicating Cards

Humidity-Indicating Cards

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

Humidity Meters

Humidity Meters

Measure relative humidity without complex calculations

Humidity-Indicating Plugs

Humidity-Indicating Plugs

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

Wristwatches

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

Electrical Resistance Meters

Electrical Resistance Meters

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

Data Recorders

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

Data Recorder Charts

Data Recorder Charts

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

Barometers

Measure atmospheric pressure changes

Vibration Monitors

Vibration Monitors

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

Light Meters

Measure light quality and intensity

Weather Stations

Weather Stations

Measure multiple weather conditions at the same time

Thickness Gauges

Thickness Gauges

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

Communication

Labels

Stick onto items to identify or convey information about them

Fluid Handling

RTDs

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

Thermocouples

Measure and transmit liquid, gas, and surface temperature

Thermocouple Transmitters

Thermocouple Transmitters

Check system temperatures from your smartphone or tablet

Thermocouple Connectors

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

Thermocouple Connector Adapters

Thermocouple Connector Adapters

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

Thermocouple Connector Covers

Thermocouple Connector Covers

Shield thermocouple connectors from dust and debris

Noncontact Temperature Sensors

Noncontact Temperature Sensors

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

Thermocouple and RTD Fittings

Thermocouple and RTD Fittings

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

Thermocouple and RTD Protection Tubes

Thermocouple and RTD Protection Tubes

Shield thermocouple and RTD probes in large, unpressurized tanks

Temperature and Humidity Transmitters

Temperature and Humidity Transmitters

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

Flow Transmitters

Flow Transmitters

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

Water Detector Sensors

Water Detector Sensors

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

Liquid-Level Gauges

Liquid-Level Gauges

Monitor fluid levels in containers

Electrical

Development Board Sensor Modules

Development Board Sensor Modules

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

Terminal Blocks

Terminal Blocks

Mate with terminals to complete circuits in control panels, motors, and small machines

Electrical Adapters

Electrical Adapters

Change electrical connectors to another type, size, or gender

Electrical Enclosure Inspection Windows

Electrical Enclosure Inspection Windows

View components without exposing them to dust and moisture

Fabricating and Machining

3D Printer Extruder Heating Elements

3D Printer Extruder Heating Elements

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

Temperature Sensors for 3D Printer Extruder Heating Elements

Temperature Sensors for 3D Printer Extruder Heating Elements

Measure heating block temperature and send it to printer controllers

Heating, Ventilation, and Air Conditioning

HVAC Flame Detectors

HVAC Flame Detectors

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

Thermostats

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

Safety Equipment

Heat Stress Monitors

Heat Stress Monitors

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

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)