Digital Leak Detector senses EPA-approved refrigerants.

Press Release Summary:

Used to inspect and maintain mobile and stationary air conditioners, refrigerators, chillers, and heat pumps, RLD400 detects HFC, HFO, HC, HCFC, and CFC refrigerant gases, including such blends as R-22 and R-1234yf approved under EPA SNAP. Lifespan of proprietary semiconductor sensor is 300+ hr of operation (10 years normal use), and sensitivities include 0.05 oz/year (R-134a) and 0.025 oz/year (R-22). Other features include 3 sensitivity levels and triple-redundant leak indication.

Original Press Release:

Made in America Digital Refrigerant Leak Detector Senses Even Newest EPA-Approved Refrigerants

Proprietary Semiconductor Sensor Lifespan Greater than 300 Hours/10 Years Normal Use

(New York, NY)  HVACR technicians and contractors—not to mention plant and facility maintenance managers, mechanics, automotive and aviation technicians, and others—will appreciate the advanced detecting power and affordability of the new Digital Refrigerant Leak Detector (RLD400) from General Tools & Instruments (General®). With its proprietary semiconductor sensor, the RLD400 is built to detect all commercially available HFC, HFO, HC, HCFC and CFC refrigerant gases, including many new ozone layer-friendly blends, such as R-22 and R-1234yf, approved under the EPA’s Significant New Alternatives Policy (SNAP).

This Made in America instrument is ideal for inspecting and maintaining mobile and stationary air conditioners, refrigerators, chillers and heat pumps. It meets SAE J2791 and J2913 standards and European standard EN14624. The RLD400 effectively pinpoints leaks, providing these benefits:

• Prevents compressor, evaporator and condenser damage caused by air and moisture entering a system

• Saves money by precluding repeated system recharges and inefficient cooling operation

• Helps large system operators meet U.S. Clean Air Act leak repair timetable standards

• Inhibits further depletion of the ozone layer

Among the RLD400’s best-in-class features are the lifespan of its proprietary semiconductor sensor—more than 300 hours of operation or 10 years normal use—and sensitivities of 0.05 oz./year (1.4 g/year) to R-134a and 0.025 oz./year (0.7g/year) to R-22. A true mechanical pump draws in samples, which increases sensitivity. Three sensitivity levels let users choose the right level for specific environments. Triple-redundant leak indication—a loud, fast beep; a bright flashing LED; and a relative digital leak size readout—make it easy to identify and characterize leaks in any setting. The RLD400’s automatic calibration and reset ensures accurate leak readings not distorted by ambient levels. In addition, a leak test vial containing a refrigerant sample allows users to easily confirm the instrument is operating correctly. And with its durable construction and padded hard plastic carrying case, the RLD400 is built to survive punishing tasks and harsh environments.

See General’s new Digital Refrigerant Leak Detector (RLD400) at Booth 816 at AHR 2013, January 28-30, 2013 at the Dallas Convention Center.

The instrument will be on display and available for order.

About General Tools & Instruments

Celebrating 90 years of product innovation from its New York City headquarters, General Tools & Instruments remains the market leader in precision specialty hand tools. Recent product advancements and corporate acquisitions have expanded General’s line to include over 1,500 precision tools and hand-held instruments. This vast array of products is widely used by contractors, professionals, technicians, DIYers and hobbyists in a broad range of industries. To learn more about General Tools & Instruments and its products, visit or call Customer Support at 1-800-697-8665.


For additional product information and photographs, contact Sue Minichiello, Senior PR Associate, SpaceAge Media Consultants, 617-783-2700, or Peter Harper, VP Strategic Marketing, General Tools & Instruments, 212-431-6100 x267,

Attn. Publishers: Please send all sales leads to Peter Harper, VP Strategic Marketing, General Tools & Instruments ∙ 80 White Street ∙ New York, NY 10013-3567 ∙ USA; Phone: 212-431-6100 x267; Fax: 212-431-6499; Email:


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