Fieldpiece DRX3 Offers

The lightweight DRX3 helps you locate system leaks quickly with multiple visual and audio feedback indicators that change with leak intensity and is designed for performance and safety, complying with ATEX Zone 2 and Class I, division 2 hazardous location requirements.

Features

• Refrigerant families: HC, HFC, HCFC, CFC, HFO, blends, plus H₂/N₂ tracer gas (listed as 5% H₂ / 95% N₂ on the product specs)
• Combustible/heating gases: Natural gas, propane, butane, methane
• Safety class coverage for refrigerants: intended for A1, A2L, and A3 refrigerants
• Auto and manual zero modes
• High, medium and low sensitivity settings
• Flashing red LED at the probe tip (blink rate increases with concentration)
• Audible alarm changes with leak intensity
• Backlit LCD shows bar graph and numeric “relative leak size” from 0–99 (relative units, not a calibrated ppm reading)
• Single heated diode sensor is field-replaceable and has a typical life of about 300 hours (the tool tracks usage with a sensor-hours counter)
• Long-life, field-replaceable batteries
• Job Link^® System App connected

Applications

HVAC and Refrigeration

Air Conditioner Refrigerant Leak Detection

• Split systems, package units, VRF/VRV
• Evaporator coils, condenser coils, flare joints, service ports

Heat Pump Systems

• Checking indoor/outdoor coils and reversing valve connections

Commercial refrigeration equipment

• Reach-in refrigerators & freezers
• Walk-in coolers/freezers
• Ice machines
• Supermarket display cases

Automotive A/C Systems (where heated-diode sniffers are acceptable)

• Hose fittings, compressors, condensers, evaporator drains

New Installation Verification

• Checking all brazed joints and fittings after charging

Post-repair Leak Confirmation

• Verifying sealed joints before evacuation and recharging

Flammable/Low-GWP Refrigerant Systems (A2L & A3)

R-32 Systems (A2L)

• Mini-splits, residential heat pumps, light commercial units

R-1234yf Systems (A2L)

• Automotive and specialty cooling equipment

Hydrocarbon Refrigerant Systems (A3)

• R-290 (propane) refrigerators and freezers
• R-600a (isobutane) domestic and light commercial units
• Small sealed systems in food service and retail

Hydrogen/Nitrogen (5% H₂ / 95% N₂) Tracer Gas Systems

• Pressure testing refrigeration and HVAC piping before charging
• Locating very small leaks after installation or major repairs

Combustible Gas Detection (spot checking)

Natural Gas Line Leak Checks

• Pipe joints, valves, regulators, appliance hookups

Propane System Checks

• RV systems, food trucks, outdoor heaters, forklifts

Butane Leak Checks

• Catering equipment, portable appliances, lab equipment

Industrial and Facility Maintenance

Mechanical Rooms and Plant Inspections

• Periodic leak surveys around compressors, valves, and headers
• Preventive Maintenance Programs
• Finding small leaks early to reduce refrigerant loss and downtime

Commissioning of New Equipment

• Final inspection before system handover