Fieldpiece JL3LC Job Link® Wireless Large Pipe Clamp Temperature Probe

Fieldpiece JL3LC — a professional wireless pipe clamp temperature probe for large-diameter pipes (3/4" to 4 1/8" OD), featuring patented Rapid Rail® sensor technology for fast, accurate readings sent directly to the Job Link® mobile app or Fieldpiece SMAN® digital manifolds.

Applications

• Suction and liquid line temperature measurement on large commercial air conditioning and refrigeration systems.
• Precise real-time superheat and subcooling determination.
• Diagnostics and service of large HVAC/R installations including VRF/VRV systems and industrial refrigeration.
• Quick heat-exchanger performance testing (evaporators and condensers).

Key features

• Rapid Rail® technology — patented sensor design closes the thermocouple circuit using the pipe itself as the conductor, delivering a stable, highly accurate temperature reading within seconds.
• Wide pipe size range — fits pipe OD from 3/4" to 4 1/8" (19.05 mm to 104.78 mm), making it ideal for commercial and industrial HVAC/R installations.
• Long wireless range — advanced radio communication transmits readings up to 305 m (1,000 ft) directly to a smartphone, tablet, or SMAN® manifold.
• Immune to external interference — ambient temperature, wind, and moisture on the pipe do not affect the reading, ensuring fully repeatable results.
• Ergonomics and convenience — one-hand clamp operation; strong spring holds the clamp firmly against the pipe without straps or hook-and-loop fasteners.

Technical data Parameter Value Model Fieldpiece JL3LC Sensor type Rapid Rail® thermocouple (NiCr / NiAl) Pipe size compatibility 3/4" to 4 1/8" OD (19.05 mm to 104.78 mm) Measurement range -46°C to 125°C (-50°F to 257°F) Accuracy ±0.6°C (±1.0°F) Response time Compensation and stabilization within seconds Wireless range Up to 305 m (1,000 ft) line-of-sight Power supply 2 × AAA batteries (included) Battery life Approx. 150 hours continuous (LED battery indicator) Weight Approx. 450 g Set contents

• Fieldpiece JL3LC Job Link® large pipe clamp probe
• Abrasive cloth for pipe surface preparation
• 2 × AAA alkaline batteries
• User manual