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Fieldpiece JL3PC Job Link System Premium Pipe Clamp Probe

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The Fieldpiece JL3PC is a pipe clamp temperature probe that has a needle nose and Rapid Rail Sensor Technology to quickly and accurately send pipe temperature measurements to the Job Link app. Also, the Fieldpiece JL3PC temperature probe is part of Fieldpiece’s Job Link System that allows you to directly send pipe temperature measurements to the SM380V or SM480V wireless refrigerant manifolds or to the Job Link app on your mobile device up to 1000 feet (305 meters) away. There is no JL2 transmitter required for either application.

The Rapid Rail sensor on the JL3PC uses the pipe itself to complete the thermocouple circuit resulting in accurate measurements that stabilize in 3 seconds and are not affected by ambient air. However, because the pipe is the thermocouple junction, you need enough contact for conductivity.
If you don’t get a measurement, there’s something on the pipe that’s blocking the electrical circuit. If that is the case, you can slightly rotate the temperature clamp back and forth around the pipe to cut through contaminants or perhaps you can sand the pipe a bit. The clamp can sit on an angle or on a bend without loss in performance.
The Fieldpiece temperature probe has a beeper and an LED to indicate whether or not the circuit is closed and a temperature is being measured.


  • (1) Job Link Premium Pipe Clamp Probe
  • (2) AAA Batteries
  • (1) Emery Cloth for Cleaning Pipes
  • (1) Operator’s Manual
  • (1) 1 Year Limited Warranty


  • Fieldpiece Psychrometer JL3RH Flex Probe
  • LED and beep indicate accurate connection
  • Ambient air conditions do not affect measurements
  • Narrow jaw connects in tight spaces
  • Water resistant


Fieldpiece Psychrometer JL3RH Flex Probe
Minimum Device Requirement : BLE 4.0 devices running iOS® 7.0 or Android™ 5.0 (Latest compatibility at
Pipe Contact Surface Compatibility : Electrically conductive
Pipe Size Compatibility : 1/4″ to 1 3/8″ (6.4mm to 34.9mm) OD
Sensor Type : Rapid Rail™ thermocouple (nickel chromium / nickel aluminum)
Measurement Feedback : Beeper and LED
Measurement Range : -50°F to 257°F (-46°C to 125°C)
Stabilization Time : 3 seconds typical
Accuracy : ±1.0°F (±0.6°C)*
Battery Type : 2 x AAA, NEDA 24A, IEC LR03
Battery Life : 150 hours typical alkaline – LED blinks red when battery replacement is needed
Auto Power Off : 2 hours (APO can be disabled)
Wireless Range : 1000 feet (305 meters) line of sight. Obstructions affect distance
Radio Frequency : 2.4 GHz
Operating Environment : 32°F to 122°F (0°C to 50°C) at <75% RH
Storage Temperature : -4°F to 140°F (-20°C to 60°C), 0 to 80% RH (with batteries removed)
Temperature Coefficient : 0.1 x (specified accuracy) per 1.8°F (32°F to 64°F, 82°F to 122°F), per 1°C (0°C to 18°C, 28°C to 50°C)
Weight : 0.33 lbs (150 g)
Water Resistant : Designed to IP55