Safe to use while measuring temperatures near flammable gases or combustible dust, these probes have an explosionproof head that’s FM approved. They are stainless steel to resist corroding when immersed in liquids and gases. They can also be used with solids, such as molds and dies, because the stainless steel acts as a shield if they’re hit or bumped. Rated NEMA 4, these probes seal out dust and water from washdowns. A layer of magnesium oxide protects the wiring inside. To adjust the length of the probe for your application, slide the fitting up towards the probe head or down towards the tip. Once it’s in the right spot, tighten the fitting to compress it against the probe, securing it in place.

Pick the thermocouple type that best covers the temperature range you expect your liquid, gas, or solid to be. You should also make sure the thermocouple type you choose is compatible with the device you plan to connect it to. These probes are often used with temperature controllers, thermometers, and other temperature-reading devices. Remove the cap on the head to wire them to your device.

These thermocouples are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.

With an FM-approved explosionproof head, these probes are safe to use around flammable gases, vapors, and dust. The included stainless steel thermowell shields them against corrosion, shock, vibration, and impact as they measure the temperature of liquids and gases. By creating a barrier, the thermowell also lets you replace the probe sensor without stopping flow or draining your system. Rated NEMA 4, these probes seal out dust and water from washdowns. To protect the wiring inside, these probes have ceramic insulation. The NPT fitting that threads into the thermowell is welded on, so you can’t adjust the probe’s length.

Pick the thermocouple type that best covers the temperature range you expect your liquid or gas to be. You should also make sure the thermocouple type you choose is compatible with the device you plan to connect it to. They’re often used with temperature controllers, thermometers, and other temperature-reading devices. Remove the cap on the head to wire them to your device.

These thermocouples are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.

Safely measure the temperature of liquids and gases in places where flammable gases, vapors, dust, and fibers are present. The head of these transmitters is FM approved and CSA certified for use in hazardous areas. It’s also NEMA 4X and IP68 rated, so it stands up to wet and dusty environments and even brief submersion. These transmitters convert readings to analog signals and send them to devices such as remote displays and programmable logic controllers (PLCs).

To measure liquids, you’ll need to connect a thermowell or protective tube before immersing the probe in a tank or pipe. Otherwise, liquid will be sucked into the head through the fitting, which will damage the wiring. The probe can also be used to measure solids, such as molds and dies—it's made of stainless steel or nickel to shield against impacts. It also has a layer of magnesium oxide to protect the wiring inside the probe. For accurate readings, a spring inside the fitting pushes the probe tip forward, keeping it in constant contact with the surface you're measuring. The head has a removable cap for easy access to sensor connections.

These thermocouples are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.

For technical drawings and 3-D models, click on a part number.

Monitor the temperature of molten steel, furnaces, glass, and other hazardous surfaces without touching them. A built-in transmitter reads surface energy levels and converts them to analog and digital output values that can be read by a receiving device, such as a PLC. Because of this, you can use these transmitters for measuring and switching applications.

Adjust set points, emissivity range, and other settings on-site using the buttons on the transmitters. Connect transmitters to an IO-link controller (not included) to change settings remotely and alert you to errors on PLCs and human-machine interfaces.

Plug these transmitters into shielded M12 sockets since they're extremely prone to signal interference. These transmitters connect using two wires to send a 4-20mA current output and four wires to use the switching output and IO-link. Connect to pin 5 to utilize the test function to verify that the transmitter's signal processing is working correctly. To view transmitter wiring diagrams, select a part number and click Product Detail.

Their lenses resist scratches, which could cause transmitters to lose focus. All are IP-rated for protection against dust and low-pressure jets of water. Made of 303 stainless steel, these transmitters resist corrosion.

Transmitters can be used on all surfaces. For best results when measuring at an angle or working on round or uneven surfaces, use transmitters with laser sight.

Transmitters with a wavelength range of 0.78–1.06 microns are best for use with glass. Use transmitters with a wavelength range of 1–1.7 microns on metal, ceramics, and graphite. Transmitters with a wavelength range of 8–14 microns are useful for plastic, fabrics, food products, and other metal-free surfaces.

Add accessories to protect your infrared thermometer transmitter in hot or dirty environments. Air purges flush out dust, moisture, and other contaminants on transmitter lenses that can interfere with infrared radiation focus and cause inaccurate readings. Cooling jackets connect to a compressed air or water line to keep temperature transmitters from overheating. Protective covers prevent dirt buildup and excessive exposure to light, which can cause transmitters to lose focus. Insulating tubes prevent overheating by protecting thermometers against heat from mounting brackets or other surfaces.

For technical drawings and 3-D models, click on a part number.

These thermometers are rated for environments where hazardous material is present. They measure the temperature of surfaces without making contact and are often used to locate and diagnose problems in electrical, heating, and ventilation systems. Maximum working distance is the distance a one foot target can be reliably measured.

Thermometers with adjustable emissivity can be calibrated for more accurate readings of shiny surfaces than thermometers with fixed emissivity.

Hazardous location environmental ratings indicate whether manufacturers have included safety features in products to facilitate their safe use in a hazardous environment. Before selecting a product for a hazardous location, ensure it is rated for your environment. See About Hazardous Location Environmental Ratings.

Warning: These infrared thermometers are not intended for medical use. Use Non-Contact Forehead Thermometers for medical use.

Mount this thermometer on pipes in environments with flammable gases, combustible dust, and ignitable fibers. It is FM approved for Class I, Divisions 1 and 2, Groups B, C, and D; Class II, Divisions 1 and 2, Groups E, F, and G; and Class III, Divisions 1 and 2 hazardous locations. Enclosure meets NEMA 4X for indoor/outdoor use and resistance to corrosive fluids, splashing water, and dust. It requires a mounting bracket (sold separately).

For technical drawings and 3-D models, click on a part number.

Monitor the temperature of hazardous, sensitive, and hard-to-reach surfaces without touching them. IP or NEMA rated, these sensors are protected against dust and washdowns.

Sensors for nonmetal surfaces measure the temperature of plastics, fabrics, ceramics, and hot adhesives.

Sensors for metal surfaces measure the temperature of both solid metals, such as heating elements, and molten metals.

Sensors with a thermocouple output communicate with devices that read thermocouple signals, so they work as replacements for thermocouples with the same output type.

Sensors with a micro USB cord and terminal block connect to your computer. Use the downloadable software to change the measurement temperature range and the output scale.

Secure your sensor with a mounting bracket or mounting stud. Mounting brackets attach to flat surfaces. Mounting studs thread into holes.

Air purges flush dust, moisture, and other contaminants from the sensor lens to prevent inaccurate readings.

Place sensor in enclosures or different rooms than the rest of the thermostat to control temperature from outside the space. Use to regulate line-voltage HVAC systems where flammable gases, vapors, and dust are present. Thermostats are rated Class I, Divisions 1 and 2, Group D; and Class II, Divisions 1 and 2, Groups E, F, and G.