About Selecting Temperature Sensors
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Sanitary Thermocouple Probes for Liquids and Gases
Designed to measure temperature in dairy and food-processing applications, these probes are built to maintain sanitary standards. They have a sanitary quick-clamp connection that’s easy to disconnect for cleaning. IP65 and NEMA 4 rated, they seal out water from washdowns from top to bottom. The probes are polished stainless steel, so they're easy to clean and won't corrode from harsh cleaning chemicals or immersion in liquids or gases. The stainless steel also shields the sensor inside from impact, while magnesium oxide protects the wiring. Remove the cap on the head to wire the thermocouple to your application. The fitting 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.
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.
Probe | Conduit Connection | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Flange OD | Response Time, sec. | Max. Temp., °F | Accuracy | Overall Lg. | Probe Material | Sensor Type | Pipe Size  | Thread Type | Gender | Connection Type | Environmental Rating | Each | |
Type J | |||||||||||||||
For 1 1/2" Tube OD | |||||||||||||||
| 3" | 1/4" | 1.984" | 4.5 | 1400° | ±4° F between 32° to 533° F ±0.75% above 533° F | 10 1/2" | 316 Stainless Steel | Ungrounded | 3/4 | NPT | Female | Screw Terminal | IP65, NEMA 4 | 0000000 | 0000000 |
| 6" | 1/4" | 1.984" | 4.5 | 1400° | ±4° F between 32° to 533° F ±0.75% above 533° F | 13 1/2" | 316 Stainless Steel | Ungrounded | 3/4 | NPT | Female | Screw Terminal | IP65, NEMA 4 | 0000000 | 000000 |
| 12" | 1/4" | 1.984" | 4.5 | 1400° | ±4° F between 32° to 533° F ±0.75% above 533° F | 19 1/2" | 316 Stainless Steel | Ungrounded | 3/4 | NPT | Female | Screw Terminal | IP65, NEMA 4 | 0000000 | 000000 |
Type K | |||||||||||||||
For 1 1/2" Tube OD | |||||||||||||||
| 3" | 1/4" | 1.984" | 4.5 | 1650° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 10 1/2" | 316 Stainless Steel | Ungrounded | 3/4 | NPT | Female | Screw Terminal | IP65, NEMA 4 | 0000000 | 000000 |
| 6" | 1/4" | 1.984" | 4.5 | 1650° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 13 1/2" | 316 Stainless Steel | Ungrounded | 3/4 | NPT | Female | Screw Terminal | IP65, NEMA 4 | 0000000 | 000000 |
| 12" | 1/4" | 1.984" | 4.5 | 1650° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 19 1/2" | 316 Stainless Steel | Ungrounded | 3/4 | NPT | Female | Screw Terminal | IP65, NEMA 4 | 0000000 | 000000 |
Wireless Thermocouple Transmitters for Liquids and Gases
Monitor your system’s temperatures directly from your smart device. These battery-powered transmitters send real-time measurements to smartphones and tablets via Bluetooth, so you can easily confirm your processes are functioning properly. Good for route-based monitoring and preventative maintenance, they record measurements on your smart device and send alerts if equipment requires your attention. Use them to maintain a safe distance from your process or to stay out of a dirty environment. Install the app to set your parameters, choose how often you’d like to receive data, and monitor temperatures from up to 300 ft. away. Rated IP65, they’re protected against dust and washdowns.
Threaded-mount transmitters have probes to measure temperatures within pipes and tanks, producing more accurate readings than strap-mount transmitters.
Strap-mount transmitters can be installed almost anywhere with the included cable tie, so they’re good for equipment that might not have a threaded port available. However, because they mount externally, they are less accurate than threaded-mount transmitters.
Turn your transmitter into a portable monitoring system by adding a quick coupling (not included). This lets you make fast, temporary connections to various equipment in different locations.
For technical drawings and 3-D models, click on a part number.
Probe | Probe Connection | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp. Range, °F | Lg. | Dia. | Accuracy | Response Time, sec. | Pipe Size | Thread Size | Thread Type | Gender | Wireless Range, ft. | Ht. | Wd. | Batteries Included | Environmental Rating | Manufacturer (Series) | Each | |
Bluetooth Connection | ||||||||||||||||
Threaded Mount—17-4 Stainless Steel Probe | ||||||||||||||||
| -40° to 230° | 13/32" | 1/4" | ±3% | 1 | __ | 7/16"-20 | UNF | Male | 300 | 2 3/4" | 1 7/8" | Yes | IP65 | Parker (Sensonode Blue) | 0000000 | 0000000 |
| -40° to 230° | 13/32" | 1/4" | ±3% | 1 | 1/4 | __ | NPT | Male | 300 | 2 11/16" | 1 7/8" | Yes | IP65 | Parker (Sensonode Blue) | 0000000 | 000000 |
| -40° to 230° | 3 3/8" | 1/4" | ±3% | 1 | __ | 7/16"-20 | UNF | Male | 300 | 2 3/4" | 1 7/8" | Yes | IP65 | Parker (Sensonode Blue) | 0000000 | 000000 |
| -40° to 230° | 3 3/8" | 1/4" | ±3% | 1 | 1/4 | __ | NPT | Male | 300 | 2 11/16" | 1 7/8" | Yes | IP65 | Parker (Sensonode Blue) | 0000000 | 000000 |
Strap Mount | ||||||||||||||||
| -40° to 257° | __ | __ | ±5% | 1 | __ | __ | __ | __ | 300 | 2 5/16" | 2 7/16" | Yes | IP65 | Parker (Sensonode Blue) | 0000000 | 000000 |
Infrared Thermometer Transmitters
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.
Transmitters | Mounting Brackets | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wavelength Range, microns | Temperature Range | Resolution | Accuracy | Digital Display Type | Emissivity | Response Time, sec. | Length | Diameter | Housing Material | Output Type | Each | Each | ||
Bracket Mount with Scratch-Resistant Lens | ||||||||||||||
| 0.78 - 1.06 | 932° to 4532° F/500° to 2500° C | 1° F/1° C | ±0.3% | LED | 0.1 to 1.1 | 0.002 | 8 7/16" | 1 3/16" | 303 Stainless Steel | Digital/Analog | 00000000 | 000000000 | 00000000 | 000000 |
| 1 - 1.7 | 482° to 2912° F/250° to 1600° C | 1° F/1° C | ±0.5% | LED | 0.1 to 1.1 | 0.002 | 8 7/16" | 1 3/16" | 303 Stainless Steel | Digital/Analog | 00000000 | 00000000 | 00000000 | 00000 |
| 8 - 14 | 32° to 1831° F/0° to 1000° C | 1° F/0.5° C | ±1% | LED | 0.1 to 1.1 | 0.1 | 7 1/2" | 1 3/16" | 303 Stainless Steel | Digital/Analog | 00000000 | 00000000 | 00000000 | 00000 |
Bracket Mount with Scratch-Resistant Lens and Laser Sight | ||||||||||||||
| 1 - 1.7 | 482° to 2912° F/250° to 1600° C | 1° F/1° C | ±0.5% | LED | 0.1 to 1.1 | 0.002 | 9 7/16" | 1 3/16" | 303 Stainless Steel | Digital/Analog | 00000000 | 00000000 | 00000000 | 00000 |
| 8 - 14 | 32° to 1831° F/0° to 1000° C | 1° F/0.5° C | ±1% | LED | 0.1 to 1.1 | 0.1 | 8 1/8" | 1 3/16" | 303 Stainless Steel | Digital/Analog | 00000000 | 00000000 | 00000000 | 00000 |
Noncontact Infrared Temperature Sensors
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.
Sensors with a close focus lens hone in on small, precise areas. Use them to take the temperature of chips on circuit boards, the tips on soldering irons, and other small components.
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.
For technical drawings and 3-D models, click on a part number.
Sensor | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp. Measuring Range, °F | Min. Object Size Detected | Max. Sensing Distance | Wavelength, microns | Resolution | Accuracy | Response Time, sec. | Lg. | Dia. | Cable Lg., ft. | Input Voltage | For Panel Cutout Dia. | Thread Size | Includes | Environmental Rating | Each | |
0-5V DC, 0-10V DC, Thermocouple Type K Output Signal | ||||||||||||||||
Adjustable Emissivity (0.1-1.1) | ||||||||||||||||
| -40° to 1,886° | 0.03" | 1.57" | 8-14 | 15:1 | ±3° F below 200° F ±1.5% above 200° F | 0.025 | 3 1/2" | 1/2" | 3.25 | 5V DC-30V DC | 1/2" | M12 | 3-ft. Lg. Micro USB Cord with 5-Pin Terminal Block (with USB-A and USB-C Adapters), Close Focus Lens | IP65 | 0000000 | 0000000 |
| -40° to 1,886° | 0.24" | 2.6ft. | 8-14 | 15:1 | ±3° F below 200° F ±1.5% above 200° F | 0.025 | 3 1/2" | 1/2" | 3.25 | 5V DC-30V DC | 1/2" | M12 | 3-ft. Lg. Micro USB Cord with 5-Pin Terminal Block (with USB-A and USB-C Adapters) | IP65 | 0000000 | 000000 |
4-20 mA Output Signal | ||||||||||||||||
Adjustable Emissivity (0.1-1.1) | ||||||||||||||||
| -58° to 1,886° | 0.03" | 1.57" | 8-14 | 15:1 | ±2° F below 200° F ±1% above 200° F | 0.014 | 1 1/8" | 1/2" | 3.25 | 5V DC-30V DC | 1/2" | M12 | 3-ft. Lg. Micro USB Cord with 5-Pin Terminal Block (with USB-A and USB-C Adapters), Close Focus Lens | IP65, NEMA 4 | 0000000 | 000000 |
| -58° to 1,886° | 0.26" | 3.2ft. | 8-14 | 15:1 | ±2° F below 200° F ±1% above 200° F | 0.014 | 1 1/8" | 1/2" | 3.25 | 5V DC-30V DC | 1/2" | M12 | 3-ft. Lg. Micro USB Cord with 5-Pin Terminal Block (with USB-A and USB-C Adapters) | IP65, NEMA 4 | 0000000 | 000000 |
Thermocouple Type J Output Signal | ||||||||||||||||
Fixed Emissivity (0.95) | ||||||||||||||||
| 32° to 662° | 0.17" | 4ft. | 7-18 | 4:1 | ±6° F below 241° F ±5% between 241° F to 440° F Not Rated above 440° F | 0.35 | 3 1/2" | 3/4" | 3.25 | 12V DC-24V DC | 3/4" | 3/4"-16 | __ | IP65, NEMA 4 | 00000000 | 000000 |
| 86° to 932° | 0.17" | 4ft. | 7-18 | 4:1 | ±10° F below 212° F ±6° F between 212° to 300° F ±2% above 300° F | 0.35 | 3 1/2" | 3/4" | 3.25 | 12V DC-24V DC | 3/4" | 3/4"-16 | __ | IP65, NEMA 4 | 00000000 | 000000 |
Sensor | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp. Measuring Range, °F | Min. Object Size Detected | Max. Sensing Distance | Wavelength, microns | Resolution | Accuracy | Response Time, sec. | Lg. | Dia. | Cable Lg., ft. | Input Voltage | For Panel Cutout Dia. | Thread Size | Includes | Environmental Rating | Each | |
4-20 mA Output Signal | ||||||||||||||||
Adjustable Emissivity (0.1-1.1) | ||||||||||||||||
| 122° to 662° | 0.2" | 15.7" | 2.3 | 22:1 | ±(0.3% of Temperature Measured + 3.6° F) | 0.02 | 1 1/4" | 1/2" | 3.25 | 5V DC-30V DC | 1/2" | M12 | 3-ft. Lg. Micro USB Cord with 5-Pin Terminal Block (with USB-A and USB-C Adapters), Close Focus Lens | IP65, NEMA 4 | 0000000 | 0000000 |
| 122° to 662° | 0.26" | 3.6ft. | 2.3 | 22:1 | ±(0.3% of Temperature Measured + 3.6° F) | 0.02 | 1 1/4" | 1/2" | 3.25 | 5V DC-30V DC | 1/2" | M12 | 3-ft. Lg. Micro USB Cord with 5-Pin Terminal Block (with USB-A and USB-C Adapters) | IP65, NEMA 4 | 0000000 | 000000 |
Thread | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Sensor Dia. | Size | Pitch, mm | Lg. | Ht. | Wd. | Dp. | Material | Each | |
| 1/2" | M12 | 1 | 1/4" | 7/8" | 3/4" | 1/2" | 303 Stainless Steel | 0000000 | 000000 |
For Sensor Connection Thread | ||||
|---|---|---|---|---|
| Size | Pitch | Material | Each | |
| M12 | 1 mm | 303 Stainless Steel | 0000000 | 000000 |