Portable Helium Leak Detector
The TG Expert is a rugged, handheld helium leak detector built for HVAC, refrigeration, industrial, and cryogenic service work. Catharometer-based sensing finds micro-leaks soap bubbles and electronic sniffers miss — in one instrument that reads seven gases.
Why choose a portable helium leak detector
Helium tracer gas testing is one of the fastest, most sensitive ways to find leaks that other methods miss. A portable unit puts that sensitivity directly in the field.
Find micro-leaks in seconds
Locate leaks that soap bubbles and electronic sniffers can’t reach, without tearing down the system.
Test hard-to-reach piping
Check sealed assemblies and buried runs without disassembly, cutting diagnostic time significantly.
Verify before commissioning
Confirm repairs and new installs are leak-tight before a system goes back into service.
Cut gas and product loss
Reduce refrigerant, helium, and process-gas loss caused by leaks that go undetected for months.
Built for the field, not just the lab
The TG Expert portable helium leak detector is trusted across industrial, HVAC, scientific, and cryogenic service work.
Industrial & manufacturing
- Pressure vessel leak testing
- Process piping integrity
- Production-line quality control
HVAC & refrigeration
- Refrigeration system leak detection
- Supermarket rack systems
- Chillers and heat exchangers
Vacuum & scientific
- Vacuum chamber leak testing
- Research laboratories
- Semiconductor & cleanroom environments
Cryogenic systems
- Liquid helium cooling circuit testing
- Cryogenic line & fitting checks
- Scheduled cryogenic-equipment service
Gas & energy
- Pipeline leak detection
- Gas storage systems
- Hydrogen tracer gas testing
Technical specifications
| Detection method | Thermal conductivity (catharometer) |
|---|---|
| Detectable gases | He, Ar, H₂, CO₂, SF₆, O₂, N₂ |
| Sensitivity (helium) | 1 × 10⁻⁵ cc/s |
| Sensitivity (argon) | 5 × 10⁻⁵ cc/s |
| Sensitivity modes | High / Medium / Low |
| Display | LED bar graph + audible alarm |
| Battery life | 6–8 hours |
| Charging time | ~12 hours |
| Calibration | Helium / argon (selectable) |
What’s included
- TG Expert portable helium leak detector
- Rechargeable battery system
- AC charger
- Rugged transport case
- User manual
For HVAC systems manufacturing & testing
Move beyond bubble testing on the production line, and pinpoint leaks fast when coils fail QC and need rework.
On the production line
- Replace bubble testing with faster, more sensitive helium leak testing
- Screen units in seconds instead of dunk-tanking or brushing every joint
- Catch leaks before coils and assemblies leave the line
- Keep throughput up without sacrificing detection sensitivity
Coil rework & QC follow-up
- Locate leaks flagged during QC testing on HVAC coils
- Pinpoint the exact leak location for targeted repair, not guesswork
- Verify rework before the unit goes back through final test
- Reduce scrapped coils and repeat QC failures
For HVAC service
Diagnose refrigerant leaks on service calls faster, and back up every repair with proof it’s actually leak-tight.
On the service call
- Pinpoint refrigerant leaks in condensers, evaporators, and coils without guesswork
- Check fittings, brazed joints, and valves other methods can miss
- Cut diagnostic time on no-cool and low-charge calls
- Work on rooftop units, split systems, and chillers in the field
After the repair
- Verify a repair is leak-tight before recharging the system
- Document leak-free results for the customer or job file
- Avoid callbacks from leaks that weren’t fully sealed
- Test new equipment installs before startup
For EV battery manufacturing & testing
Confirm pack and module enclosures are sealed before they leave the line, and catch coolant-loop leaks that put thermal safety at risk.
On the production line
- Leak test battery pack and module enclosures before final seal
- Verify weld, gasket, and adhesive seams on cell-to-pack assemblies
- Screen thermal management coolant plates and loops for leaks
- Support inline testing without slowing takt time
Quality & safety verification
- Confirm enclosures meet IP67/IP68 ingress protection targets
- Catch leaks before moisture ingress causes cell shorts or corrosion
- Flag coolant leaks that risk thermal runaway before packs ship
- Pinpoint exact leak location for rework, not full-pack rejection
For supermarkets & refrigeration contractors
Find refrigerant leaks faster, stay compliant, and reduce losses across rack systems and walk-in equipment.
The challenge in supermarket refrigeration
- Miles of piping in rack systems
- Micro-leaks that are hard to find
- Expensive refrigerant losses
- Risk of EPA violations
Ideal refrigeration applications
- Supermarket rack systems
- Walk-in freezers & coolers
- Heat exchangers
- Condensers & evaporators
- CO₂ and HFC systems
The TG Expert advantage
- Locate leaks faster than soap bubbles or electronic sniffers
- Detect leaks in hard-to-reach piping
- Perform commissioning leak tests on new installs
- Verify repairs with confidence
Real cost savings
- Reduced refrigerant loss, thousands per store, per year
- Minimized system downtime
- Avoided compliance penalties
- Improved system efficiency
Frequently asked questions
What is a portable helium leak detector used for?+
A portable helium leak detector locates small or hard-to-find leaks in sealed systems — HVAC/refrigeration lines, vacuum chambers, pressure vessels, and cryogenic equipment — by tracing helium or another tracer gas as it escapes.
How sensitive is the TG Expert helium leak detector?+
The TG Expert detects helium leaks as small as 1 × 10⁻⁵ cc/s and argon leaks as small as 5 × 10⁻⁵ cc/s, suitable for critical, high-precision applications.
What gases can the TG Expert detect besides helium?+
In addition to helium, the TG Expert detects argon, hydrogen, CO₂, SF₆, oxygen, and nitrogen — making it a multi-gas leak detection tool.
How long does the battery last?+
The TG Expert runs for 6–8 hours on a full charge, with a charging time of approximately 12 hours.
Is this leak detector suitable for supermarket refrigeration systems?+
Yes. The TG Expert is widely used by refrigeration contractors to locate micro-leaks in rack systems, walk-in coolers, and heat exchangers, helping stores reduce refrigerant loss and stay compliant with EPA regulations.
Ready to find leaks faster?
Request pricing on the TG Expert portable helium leak detector for your team.