CEM GD-3303 Refrigerant Leak Detector

Locate Refrigerant Leaks in HVAC and Cooling Systems

The CEM GD-3303 Refrigerant Leak Detector is designed to locate refrigerant gas leaks in air-conditioning, refrigeration and cooling systems. Its low-power semiconductor sensor detects a range of CFC, HCFC and HFC refrigerants, while the long flexible probe provides access around pipework, joints and components where leaks can be difficult to reach.

The GD-3303 provides 100 ppm sensitivity for R134a and R22, with an adjustable audible tick rate and visual indication to help technicians identify and pinpoint the source of a refrigerant leak.

100 ppm Sensitivity for R134a and R22

The semiconductor sensor provides a specified detection sensitivity of 100 ppm for R134a and R22. The detector can also respond to a range of other refrigerants used in refrigeration and air-conditioning systems.

Detect a Wide Range of Refrigerants

The GD-3303 is designed to detect CFC refrigerants and more recent HFC refrigerants and replacements. Manufacturer-listed examples include R22, R134a, R404A, R407C and R410A, together with a wider range of compatible refrigerants.

16-Inch Flexible Gooseneck Probe

A 16-inch flexible gooseneck probe makes it easier to position the sensor around pipe connections, refrigeration components and other confined or difficult-to-reach areas.

Adjustable Tick Rate Helps Pinpoint the Leak

The detection rate can be adjusted using the thumb-operated control. As the sensor approaches a refrigerant leak, the audible tick rate increases, helping the technician narrow down the location of the leak.

Compensate for Background Refrigerant Concentrations

The adjustable tick control can also be used to compensate for background refrigerant concentration, allowing the detector to continue searching for the source of a higher local concentration.

Audible and Visual Leak Indication

Leak detection is communicated through both audible and visual indications, allowing the operator to follow changes in refrigerant concentration while moving the probe around the suspected leak area.

Less Than Two-Second Response Time

The GD-3303 has a manufacturer-specified response time of less than two seconds under the stated test conditions, allowing the probe to be moved systematically around joints and components during leak inspection.

Designed for One-Handed Operation

The handheld body and thumb-operated adjustment control allow the detector to be operated with one hand while the flexible probe is positioned around the refrigeration or air-conditioning system.

Earphone Connection for Noisy Work Areas

An integrated earphone jack provides an additional option for monitoring the audible detection signal when working in environments where surrounding equipment noise can make the built-in alarm harder to hear.

Key Features

• Refrigerant leak detector for HVAC and refrigeration systems
• 100 ppm sensitivity for R134a and R22
• Low-power semiconductor sensor
• Detects a range of CFC, HCFC and HFC refrigerants
• 16-inch flexible gooseneck probe
• Adjustable tick rate for leak location
• Audible and visual leak indication
• Less than 2-second response time
• Approximately 1-minute warm-up time
• One-handed operation
• Earphone jack
• Continuous duty cycle
• Approx. 8 hours continuous battery operation

Technical Specifications

Model	CEM GD-3303
Product Type	Refrigerant Gas Leak Detector
Sensitivity	100 ppm R134a / R22
Sensor Type	Low-power semiconductor
Warm-Up Time	Approx. 1 minute
Response Time	Less than 2 seconds (up to 40% LEL)
Alarm	Visible and audible
Sensitivity Adjustment	Adjustable tick rate
Probe Length	16 in (approx. 40 cm)
Earphone Jack	Yes
Duty Cycle	Continuous
Power Supply	3 × C cell batteries
Battery Life	Approx. 8 hours continuous use
Dimensions	221 × 72 × 46 mm
Weight	498 g

Typical Applications

• HVAC servicing and maintenance
• Air-conditioning systems
• Commercial refrigeration
• Refrigerators and cooling equipment
• Industrial cooling systems
• Refrigerant pipework and joints
• Automotive air-conditioning servicing
• Preventive maintenance and fault finding

What’s Included?

• CEM GD-3303 Refrigerant Leak Detector
• Carrying Case
• 3 × C Cell Batteries
• Instruction Manual
• Test Report

Explore our complete range of gas leak detectors for HVAC, maintenance and industrial leak detection.