About Selecting Temperature Sensors
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Noncontact Liquid-Level Transmitters
Using high-frequency soundwaves, these transmitters measure the levels of corrosive, dirty, or sticky liquids without coming into contact with them. They’ll continuously send measurements, so you can monitor status and manage components in your system. Mount at the top of your tank. There should be no tank walls, agitators, or other objects in the path of the soundwaves.
Radar transmitters are best for liquids that are tricky to measure because they work even if there’s condensation, foam, or other difficult conditions. They also measure the level of liquids with solids and small solids. In addition to the traditional 4-20 mA output, these transmitters can also send measurements to your Android smartphone or tablet using Bluetooth. There’s an app you can use to set up your transmitter and calibrate it for your system.
IP68 rated transmitters seal out dust and water from temporary submersion.
For technical drawings and 3-D models, click on a part number.
Overall | Temp. Range, °F | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | For Liquid Level, ft. | Max. Pressure | Dia. | Lg. | Min. | Max. | Cable Lg., ft. | Input Voltage | Electrical Connection Type | Environmental Rating | Data Connection Type | Communication Protocol | Each | |
NPT Male Pipe Connection | ||||||||||||||
4-20mA Output Signal | ||||||||||||||
| 1 1/2 | 0-45 | 40 psi @ 70° F | 4" | 4 1/4" | -40° | 175° | 15 | 18-36V DC | Wire Leads | IP68 | Bluetooth | HART | 0000000 | 000000000 |
Fluke High-Accuracy Data-Logging Thermometers
Store up to 500 readings on these thermometers and determine temperature within ±0.75° F accuracy.
Thermometers with NIST certificate include a calibration certificate traceable to NIST that states the thermometer has passed a test for accuracy.
The optional type K probe (sold separately) connects to your thermometer to measure temperatures up to 537° C or 1000° F.
Probe | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Probe Inputs | Temperature Range | Resolution | Accuracy | Response Time, sec. | Cable Lg., ft. | Lg. | Dia. | Manufacturer Part No. | Specifications Met | Batteries Included | Each | |
Thermometers | ||||||||||||
For Use With Air, Gases, Solids, Surfaces | ||||||||||||
| 1 | -40° to 500° F/-40° to 260° C/233 to 533 K | 0.1/0.1/0.1 | ±0.75° F/±0.4° C | 2 | 3.25 | 3/16" | 1/16" | 53-2B | CE Marked, CSA Certified | Yes | 00000000 | 0000000 |
| 2 | -40° to 500° F/-40° to 260° C/233 to 533 K | 0.1/0.1/0.1 | ±0.75° F/±0.4° C | 2 | 3.25 | 3/16" | 1/16" | 54-2B | CE Marked, CSA Certified | Yes | 00000000 | 000000 |
Thermometers with NIST Certificate | ||||||||||||
For Use With Air, Gases, Solids, Surfaces | ||||||||||||
| 1 | -40° to 500° F/-40° to 260° C/233 to 533 K | 0.1/0.1/0.1 | ±0.75° F/±0.4° C | 2 | 3.25 | 3/16" | 1/16" | 53-2B | CE Marked, CSA Certified | Yes | 00000000 | 000000 |
| 2 | -40° to 500° F/-40° to 260° C/233 to 533 K | 0.1/0.1/0.1 | ±0.75° F/±0.4° C | 2 | 3.25 | 3/16" | 1/16" | 54-2B | CE Marked, CSA Certified | Yes | 00000000 | 00000000 |
| Optional Type K Probe (8 3/8" Lg.) | 00000000 | Each | 0000000 |
Fluke High-Accuracy Hand-Held Thermometers
Designed for laboratory applications, these thermometers determine temperature within ±0.75° F accuracy.
Thermometers with NIST certificate include a calibration certificate traceable to NIST that states the thermometer has passed a test for accuracy.
The optional type K probe (sold separately) connects to your thermometer to measure temperatures up to 537° C or 1000° F.
Probe | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Probe Inputs | Temperature Range | Resolution | Accuracy | Response Time, sec. | Cable Lg., ft. | Lg. | Dia. | Manufacturer Part No. | Specifications Met | Batteries Included | Each | |
Thermometers | ||||||||||||
For Use With Air, Gases, Solids, Surfaces | ||||||||||||
| 1 | -40° to 500° F/-40° to 260° C/233 to 533 K | 0.1/0.1/0.1 | ±0.75° F/±0.45° C | 2 | 3.25 | 3/16" | 1/16" | 51-2 | CE Marked, CSA Certified | Yes | 00000000 | 0000000 |
| 2 | -40° to 500° F/-40° to 260° C/233 to 533 K | 0.1/0.1/0.1 | ±0.75° F/±0.45° C | 2 | 3.25 | 3/16" | 1/16" | 52-2 | CE Marked, CSA Certified | Yes | 00000000 | 000000 |
Thermometers with NIST Certificate | ||||||||||||
For Use With Air, Gases, Solids, Surfaces | ||||||||||||
| 1 | -40° to 500° F/-40° to 260° C/233 to 533 K | 0.1/0.1/0.1 | ±0.75° F/±0.45° C | 2 | 3.25 | 3/16" | 1/16" | 51-2 | CE Marked, CSA Certified | Yes | 00000000 | 000000 |
| 2 | -40° to 500° F/-40° to 260° C/233 to 533 K | 0.1/0.1/0.1 | ±0.75° F/±0.45° C | 2 | 3.25 | 3/16" | 1/16" | 52-2 | CE Marked, CSA Certified | Yes | 00000000 | 000000 |
| Optional Type K Probe (8 3/8" Lg.) | 00000000 | Each | 0000000 |
Food and Beverage Hand-Held Thermometers
For use in food-processing applications, this thermometer meets NSF/ANSI standards and includes a thermocouple probe with a pointed tip to pierce dense meats and frozen foods. The housing meets IP07 for protection from temporary submersion.
Probe | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature Range | Resolution | Accuracy | No. of Probe Inputs | Response Time, sec. | Cable Lg., ft. | Lg. | Dia. | Environmental Rating | Specifications Met | Batteries Included | Each | |
For Use With Air, Beverage, Food, Liquids, Solids | ||||||||||||
| -100° to 500° F/-73° to 260° C | 0.1, 1/0.1, 1 | ±0.9° F/±0.5° C | 1 | 1 | 3 | 4" | 3/16" | IP07 | CE Marked, NSF/ANSI 2 | Yes | 00000000 | 0000000 |
| Stainless Steel Replacement Probe | 00000000 | Each | 0000000 |
Extended-Life Data-Logging Thermometers
For more accurate and consistent readings than thermometers with thermocouple probes and a longer service life, this thermometer has a resistance temperature detector (RTD) probe. It logs up to 2,000 time- and date-stamped readings and uploads data to a PC through the USB port.
To conserve battery life, use the optional power adapter (sold separately).
Probe | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature Range | Resolution | Accuracy | No. of Probe Inputs | Response Time, sec. | Cable Length, ft. | Lg. | Dia. | Specifications Met | Batteries Included | Each | |
For Use With Air, Gases, Liquids, Solids, Surfaces | |||||||||||
| -58° to 932° F/-50° to 500° C | 0.1/0.1 | ±0.1° F/±0.1° C | 1 | 10 | 5 | 4" | 3/16" | CE Marked | Yes | 00000000 | 000000000 |
Thermocouple Probes with Armored Cable for Solids
To monitor the internal temperature of soft solids in humid conditions and harsh environments, these thermocouple probes have an armored stainless steel cable that protects wiring from corrosion and damage.
Pointed-tip probes pierce dense solids more easily than round-tip probes.
Needle-tip probes minimize puncture damage when inserted into sensitive materials and small objects.
Probe | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature Range, ° F | Lg. | Dia. | Probe Style | Accuracy | Response Time, sec. | Cable Lg., ft. | Connection Type | Sensor Type | Cable Material | Max. Cable Temperature, ° F | Pin Lg. | Each | |
300 Series Stainless Steel Probe | |||||||||||||
Type J | |||||||||||||
| -175° to 500° | 12" | 1/8" | Round Tip | ±0.75% | 15 | 2.66 | Flat Pin | Ungrounded | Stainless Steel | 500° | 1/2" | 0000000 | 0000000 |
| -350° to 600° | 2" | 1/16" | Needle Tip | ±0.75% | 1 | 2.66 | Flat Pin | Grounded | Stainless Steel | 500° | 1/2" | 0000000 | 000000 |
Type K | |||||||||||||
| -175° to 500° | 12" | 1/8" | Round Tip | ±0.75% | 15 | 2.66 | Flat Pin | Ungrounded | Stainless Steel | 500° | 1/2" | 0000000 | 000000 |
| -450° to 600° | 2" | 1/16" | Needle Tip | ±0.75% | 1 | 2.66 | Flat Pin | Grounded | Stainless Steel | 500° | 1/2" | 0000000 | 000000 |
| -450° to 600° | 6" | 1/16" | Needle Tip | ±0.75% | 1 | 2.66 | Flat Pin | Grounded | Stainless Steel | 500° | 1/2" | 0000000 | 000000 |
| -450° to 1500° | 2" | 1/16" | Needle Tip | ±0.75% | 1 | 2.66 | Flat Pin | Grounded | Stainless Steel | 500° | 1/2" | 0000000 | 000000 |
316 Stainless Steel Probe | |||||||||||||
Type J | |||||||||||||
| -310° to 1400° | 11 1/2" | 1/4" | Pointed Tip | ±10° F | 10 | 5 | Flat Pin | Grounded | Stainless Steel | 900° | 1/2" | 000000000 | 000000 |
Type K | |||||||||||||
| -410° to 1650° | 11 1/2" | 1/4" | Pointed Tip | ±10° F | 10 | 5 | Flat Pin | Grounded | Stainless Steel | 900° | 1/2" | 000000000 | 000000 |
Thermocouple Probes for Solids
Pierce pliable plastics, rubber, and other soft solids to check the internal temperature.
Probe | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature Range, ° F | Lg. | Dia. | Accuracy | Response Time, sec. | Cable Lg., ft. | Connection Type | Sensor Type | Cable Material | Probe Style | Pin Lg. | Each | ||
304 Stainless Steel Probe | |||||||||||||
Type J | |||||||||||||
| 1 | 32° to 350° | 6" | 0.134" | ±0.4% | 2 | 5 | Flat Pin | Grounded | PVC Plastic | Pointed Tip | 1/2" | 000000000 | 0000000 |
Type K | |||||||||||||
| 1 | -40° to 500° | 4 1/2" | 1/8" | ±0.2% | 4 | 4 | Flat Pin | Grounded | Polyurethane | Pointed Tip | 1/2" | 00000000 | 00000 |
| 1 | -40° to 500° | 6" | 3/32" | ±0.2% | 2 | 4 | Flat Pin | Grounded | Polyurethane | Pointed Tip | 1/2" | 000000000 | 000000 |
| 3 | -165° to 400° | 36" | 5/16" | ±0.75% | 6 | 5 | Flat Pin | Grounded | Polyurethane | Pointed Tip | 1/2" | 0000000 | 000000 |
316 Stainless Steel Probe | |||||||||||||
Type J | |||||||||||||
| 2 | 32° to 350° | 4" | 1/16" | ±0.4% | 1 | 4 | Flat Pin | Grounded | PVC Plastic | Pointed Tip | 1/2" | 000000000 | 000000 |
Heavy Duty Thermocouple Probes for Solids
The armored stainless steel cable resists wear, abrasion, and corrosion in humid and harsh conditions. A bayonet connection securely holds the probe in place in high-vibration environments.
Note: When installing probes with wire leads, the red wire is negative.
Probe | Wire | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature Range, ° F | Lg. | Dia. | Accuracy | Response Time, sec. | Cable Lg., ft. | Connection Type | Sensor Type | Cable Material | Max. Cable Temperature, ° F | Lead Lg. | Gauge | Each | |
304 Stainless Steel Probe | |||||||||||||
Type J | |||||||||||||
| 32° to 1380° | 1/2" | 3/16" | ±0.75% | 2.5 | 4 | Wire Leads | Grounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 000000 |
| 32° to 1380° | 1/2" | 3/16" | ±0.75% | 2.5 | 6 | Wire Leads | Grounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 1380° | 1/2" | 3/16" | ±0.75% | 2.5 | 8 | Wire Leads | Grounded | Stainless Steel | 900° | 3" | 20 | 0000000 | 00000 |
| 32° to 1380° | 1/2" | 3/16" | ±0.75% | 2.5 | 10 | Wire Leads | Grounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 1380° | 1/2" | 3/16" | ±0.75% | Not Rated | 4 | Wire Leads | Ungrounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 1380° | 1/2" | 3/16" | ±0.75% | Not Rated | 6 | Wire Leads | Ungrounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 1380° | 1/2" | 3/16" | ±0.75% | Not Rated | 8 | Wire Leads | Ungrounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 1380° | 1/2" | 3/16" | ±0.75% | Not Rated | 10 | Wire Leads | Ungrounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
Type K | |||||||||||||
| 32° to 2280° | 1/2" | 3/16" | ±0.75% | 2.5 | 4 | Wire Leads | Grounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 2280° | 1/2" | 3/16" | ±0.75% | 2.5 | 6 | Wire Leads | Grounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 2280° | 1/2" | 3/16" | ±0.75% | 2.5 | 8 | Wire Leads | Grounded | Stainless Steel | 900° | 3" | 20 | 0000000 | 00000 |
| 32° to 2280° | 1/2" | 3/16" | ±0.75% | 2.5 | 10 | Wire Leads | Grounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 2280° | 1/2" | 3/16" | ±0.75% | Not Rated | 4 | Wire Leads | Ungrounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |
| 32° to 2280° | 1/2" | 3/16" | ±0.75% | Not Rated | 6 | Wire Leads | Ungrounded | Stainless Steel | 900° | 3" | 20 | 0000000 | 00000 |
| 32° to 2280° | 1/2" | 3/16" | ±0.75% | Not Rated | 10 | Wire Leads | Ungrounded | Stainless Steel | 900° | 3" | 20 | 00000000 | 00000 |