About Selecting Temperature Sensors
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Thermocouple Probes with Armored Cable for Liquids and Gases
To prevent wear and corrosion, an armored stainless steel cable protects the wiring that connects these probes to your temperature-monitoring device. The probes themselves are also made of stainless steel, so you don't have to worry about corrosion when you're measuring the temperature of liquids and gases. They’re also safe to use with solids, such as molds and dies, because the stainless steel acts as a shield if they’re hit or bumped. If space is tight, you can bend them up to 90°. They have a protective layer of magnesium oxide to keep the wiring inside the probe from kinking if they’re bent.
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 thermocouples are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.
Probes with wire leads offer more flexibility than probes with connectors already attached because you can either wire them to a terminal block or add your own connector. For installation, note that the red wire is negative.
For technical drawings and 3-D models, click on a part number.
Probe | Cable | Wire | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Response Time, sec. | Max. Temperature, ° F | Accuracy | Probe Material | Sensor Type | Lg., ft. | Material | Max. Temp., ° F | Lead Lg. | Gauge | Each | |
Type J | |||||||||||||
Wire Leads | |||||||||||||
| 9" | 1/8" | 0.6 | 970° | ±4° F between 32° to 533° F ±0.75% above 533° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 24 | 000000000 | 000000 |
| 9" | 3/16" | 0.9 | 1150° | ±4° F between 32° to 533° F ±0.75% above 533° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 22 | 000000000 | 00000 |
| 9" | 1/4" | 1.3 | 1330° | ±4° F between 32° to 533° F ±0.75% above 533° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 20 | 000000000 | 00000 |
Type K | |||||||||||||
Wire Leads | |||||||||||||
| 9" | 1/8" | 0.6 | 1700° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 24 | 000000000 | 00000 |
| 9" | 3/16" | 0.9 | 1700° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 22 | 000000000 | 00000 |
| 9" | 1/4" | 1.3 | 1700° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 20 | 000000000 | 00000 |
Type T | |||||||||||||
Wire Leads | |||||||||||||
| 9" | 1/8" | 0.6 | 700° | Not Rated below 32° F ±1.8° F between 32° to 240° F ±0.75% above 240° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 24 | 000000000 | 00000 |
| 9" | 3/16" | 0.9 | 700° | Not Rated below 32° F ±1.8° F between 32° to 240° F ±0.75% above 240° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 22 | 000000000 | 00000 |
| 9" | 1/4" | 1.3 | 700° | Not Rated below 32° F ±1.8° F between 32° to 240° F ±0.75% above 240° F | 316 Stainless Steel | Grounded | 3 | Stainless Steel | 900° | 2" | 20 | 000000000 | 00000 |
Threaded Thermocouple Probes for Liquids and Gases
For easy installation in thermowells, tanks, pipes, and other closed vessels, these probes have a male NPT fitting. They’re stainless steel, so they won’t corrode as they measure the temperature of liquids and gases. The stainless steel acts as a shield if they’re hit or bumped, so they’re also safe to use with solids, such as molds and dies. 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 in. 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.
These probes are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.
Probes with wire leads can be wired to a terminal block or attached to a thermocouple connector. For installation, note that the red wire is negative.
For technical drawings and 3-D models, click on a part number.
Probe | Cable | Wire | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Response Time, sec. | Max. Temp., °F | Accuracy | Probe Material | Probe Insulation | Sensor Type | Lg., ft. | Material | Max. Temp., °F | Lead Lg. | Gauge | Each | |
Type J | ||||||||||||||
1/8 NPT Male Probe Connection | ||||||||||||||
| 9" | 1/8" | 0.5 | 700° | ±4° F between 32° to 533° F ±0.75% above 533° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 1/2" | 24 | 00000000 | 000000 |
| 9" | 3/16" | 1 | 700° | ±4° F between 32° to 533° F ±0.75% above 533° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 1/2" | 24 | 00000000 | 00000 |
1/2 NPT Male Probe Connection | ||||||||||||||
| 9" | 1/8" | 0.5 | 700° | ±4° F between 32° to 533° F ±0.75% above 533° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 1/2" | 24 | 00000000 | 00000 |
| 9" | 3/16" | 1 | 700° | ±4° F between 32° to 533° F ±0.75% above 533° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 3" | 24 | 0000000 | 00000 |
Type K | ||||||||||||||
1/8 NPT Male Probe Connection | ||||||||||||||
| 9" | 1/8" | 0.5 | 900° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 1/2" | 24 | 00000000 | 00000 |
| 9" | 3/16" | 1 | 900° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 1/2" | 24 | 00000000 | 00000 |
1/2 NPT Male Probe Connection | ||||||||||||||
| 9" | 1/8" | 0.5 | 900° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 1/2" | 24 | 00000000 | 00000 |
| 9" | 3/16" | 1 | 900° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 3" | 24 | 0000000 | 00000 |
Type T | ||||||||||||||
1/8 NPT Male Probe Connection | ||||||||||||||
| 9" | 3/16" | 1 | 400° | Not Rated below 32° F ±1.8° F between 32° to 240° F ±0.75% above 240° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 1/2" | 24 | 00000000 | 00000 |
1/2 NPT Male Probe Connection | ||||||||||||||
| 9" | 3/16" | 1 | 400° | Not Rated below 32° F ±1.8° F between 32° to 240° F ±0.75% above 240° F | 304 Stainless Steel | Noninsulated | Grounded | 4 | Fiberglass | 900° | 3" | 24 | 0000000 | 00000 |
Threaded Thermocouple Probe Transmitters for Liquids and Gases
Send temperature readings from tanks, containers, and pipes to devices such as remote displays and programmable logic controllers (PLCs) without the need for a separate thermocouple transmitter. These transmitters convert temperature to 4-20mA analog signals and connect using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices. Rated IP68 and NEMA 4X, the aluminum head protects against dust, washdowns, and corrosion. It has a removable cap for easy access to sensor connections.
Made of either stainless steel or nickel, the probe resists corroding in liquids and gases. It’s also safe to use with solids, such as molds and dies, because the metal acts as a shield if it’s hit or bumped. For accurate readings, a spring inside the fitting makes sure the tip stays in constant contact with a thermowell, protective sleeve, or the surface you’re measuring. You can also bend the probe up to 90° if space is tight. A protective layer of magnesium oxide keeps the wiring inside the probe from kinking when bent.
These transmitters 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 | Probe Connection | Conduit Connection | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Response Time, sec. | Temp. Range, °F | Accuracy | O'all Lg. | Sensor Type | Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Output Current | Voltage Range | Environmental Rating | Each | |
Type J | |||||||||||||||||
316 Stainless Steel Probe | |||||||||||||||||
| 9" | 1/4" | 5 | 0° to 200° | ±4° F between 32° to 200° F | 14" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4-20mA | 8V DC-32V DC | IP68, NEMA 4X | 0000000 | 0000000 |
| 9" | 1/4" | 5 | 0° to 300° | ±4° F between 32° to 300° F | 14" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4-20mA | 8V DC-32V DC | IP68, NEMA 4X | 0000000 | 000000 |
| 9" | 1/4" | 5 | 0° to 500° | ±4° F between 32° to 500° F | 14" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4-20mA | 8V DC-32V DC | IP68, NEMA 4X | 0000000 | 000000 |
| 9" | 1/4" | 5 | 0° to 1000° | ±4° F between 32° to 533° F ±0.75% above 533° F | 14" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4-20mA | 8V DC-32V DC | IP68, NEMA 4X | 0000000 | 000000 |
Type K | |||||||||||||||||
Nickel Probe | |||||||||||||||||
| 9" | 1/4" | 5 | 0° to 2150° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 14" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4-20mA | 8V DC-32V DC | IP68, NEMA 4X | 0000000 | 000000 |
316 Stainless Steel Probe | |||||||||||||||||
| 9" | 1/4" | 5 | 0° to 500° | Not Rated below 32° F ±4° F between 32° to 500° F | 14" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4-20mA | 8V DC-32V DC | IP68, NEMA 4X | 0000000 | 000000 |
Type T | |||||||||||||||||
316 Stainless Steel Probe | |||||||||||||||||
| 9" | 1/4" | 5 | -328° to 100° | Not Rated below 32° F ±1.8° F between 32° to 100° F | 14" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4-20mA | 8V DC-32V DC | IP68, NEMA 4X | 0000000 | 000000 |
Hazardous Location Threaded Thermocouple
Probe Transmitters for Liquids and Gases
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.
Probe | Probe Connection | Conduit Connection | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Response Time, sec. | Temp. Range, °F | Accuracy | Overall Lg. | Sensor Type | Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Output Current Range | Voltage Range | Environmental Rating | Each | |
Type J | |||||||||||||||||
316 Stainless Steel Probe | |||||||||||||||||
| 9" | 1/4" | 5 | 0° to 500° | Not Rated below 32° F ±4° F between 32° to 500° F | 14 5/8" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4mA-20mA | 8V DC-35V DC | IP68, NEC Class I Divisions 1, 2 Groups B, C, D, NEC Class II Divisions 1, 2 Groups E, F, G, NEC Class III Divisions 1, 2, NEMA 4X | 00000000 | 0000000 |
Type K | |||||||||||||||||
Nickel Probe | |||||||||||||||||
| 9" | 1/4" | 5 | 0° to 2150° | Not Rated below 32° F ±4° F between 32° to 533° F ±0.75% above 533° F | 14 5/8" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4mA-20mA | 8V DC-35V DC | IP68, NEC Class I Divisions 1, 2 Groups B, C, D, NEC Class II Divisions 1, 2 Groups E, F, G, NEC Class III Divisions 1, 2, NEMA 4X | 00000000 | 000000 |
Type T | |||||||||||||||||
316 Stainless Steel Probe | |||||||||||||||||
| 9" | 1/4" | 5 | -328° to 100° | Not Rated below 32° F ±1.8° F between 32° to 100° F | 14 5/8" | Ungrounded | 1/2 | NPT | Male | 3/4 | NPT | Female | 4mA-20mA | 8V DC-35V DC | IP68, NEC Class I Divisions 1, 2 Groups B, C, D, NEC Class II Divisions 1, 2 Groups E, F, G, NEC Class III Divisions 1, 2, NEMA 4X | 00000000 | 000000 |