For fridgies who want clean data without the muck-around, the Fieldpiece JL3KH6 Job Link™ Charge & Air Test Kit gives you a full system snapshot from the condensing unit to the air handler in one hit. Live readings to your phone, long-range Bluetooth, and Rapid Rail™ clamp accuracy — it’s a solid upgrade for faster, smarter service.
Key Features & Trade Benefits
- Serious wireless range — up to ~300 m line-of-sight; expect ~100–350 ft around buildings. Less back-and-forth, more fixing.
- Rapid Rail™ pipe clamps (JL3PC) — stabilise in about 3 seconds with ±0.6 °C (±1 °F) accuracy for tight superheat/subcool targets. Fewer re-flares, fewer call-backs.
- Pressure probes (JL3PR) — angled 1/4″ fitting, accurate at any elevation, and A2L-compatible for modern refrigerants.
- Flex psychrometers (JL3RH) — fast DB/WB/RH/DP readings for airflow tuning and charge verification.
- Job Link™ App logging — capture, graph, and share results straight from site — perfect for handover reports and warranty proofs.
- Rugged, site-ready build — weather/impact-resistant probes and a padded case built for Aussie conditions.
Why This Product Matters
Real job: In Western Sydney on a 38 °C arvo, a tech set clamps and psychrometers, then checked TXV behaviour from the outdoor pad while Job Link graphed SH/SC and return air %RH. Found a lazy evaporator fan curve, not a charge issue — too easy. If you’re comparing options, browse our Fieldpiece tools collection for compatible instruments and accessories.
Pro Tip
Zero your pressure probes at ambient before hooking up, then place psychrometers past the coil face (not right on the grille) to avoid stratification. Log 10–15 minutes of data to catch hunting TXVs — fair dinkum time-saver.
Compatibility & System Info
- Works with: Split systems, ducted, VRF/VRV, and refrigeration circuits across common gases including R32 (A2L), R410A, R22, R134a (measurement tools only; follow safe work practices).
- App/Platform: Fieldpiece Job Link™ (iOS/Android), BLE 4.0+ devices; integrates with SM380V/SM480V manifolds.
What’s Included
- 2 × JL3PR Pressure Probes (discharge/suction)
- 2 × JL3PC Rapid Rail™ Pipe Clamp Probes
- 2 × JL3RH Flex Psychrometer Probes
- Quick-access padded carry case
- 12 × AAA batteries (2 per probe)
Specifications (Quick Reference)
| Wireless range | Up to ~300 m (LoS); typical jobsites ~100–350 ft |
| Pipe clamp (JL3PC) | OD 1/4″–1 3/8″ (6.4–34.9 mm); –46 °C to 125 °C; ±0.6 °C; Rapid Rail™ |
| Pressure (JL3PR) | –29″Hg to 580 psig (–74 cmHg to 4000 kPa); angled 1/4″ fitting |
| Psychrometer (JL3RH) | 0–100 %RH; ±2.5 %RH (10–90 %RH); temp –20 °C to 60 °C |
| App | Job Link™ (live view, logging & share) |
| Ingress | Water/impact-resistant designs (per probe) |
Specs summarised from Fieldpiece official pages and manuals.
Warranty & Returns
Backed by manufacturer warranty (12 months typical). Keep your invoice and a copy of your Job Link report for quick assessments. For returns, follow our standard Shipping & Returns process.
FAQs
Q: Is the Bluetooth range really that long?
A: Fieldpiece lists up to ~300 m line-of-sight. Around walls and plant, ~100–350 ft is typical — still plenty to stay at the condenser while watching indoor air data.
Q: Can I use this on R32 systems?
A: Yes — the probes are measurement tools and are A2L-compatible. Always follow Safe Work and AS/NZS procedures when working with A2L refrigerants.
Q: Does it integrate with my Fieldpiece manifold?
A: Yes — pairs with SM380V/SM480V for on-manifold viewing, plus full logging in Job Link™.
Q: Do I need Wi-Fi?
A: No — the probes connect via Bluetooth directly to your device and the Job Link™ app.
Related Products
- Need to see evacuation progress on your phone? Add the MG44 wireless micron gauge — it talks to Job Link for clean evacuation graphs.
- Balancing airflow or checking gas pressure? The JL3KM2 manometer kit drops hoses and reads from the right spots.
- Want on-manifold numbers and logs? Pair it with the SM480V wireless manifold for tightness tests and week-long logging.