Unitrade Refrigerant Leak Detectors

This next-generation Refrigerant Leak Detector D TEK Select uses an innovative infrared absorption sensing cell that is extremely sensitive to all refrigerants. D-TE K Select maintains that sensitivity over time for consistent, accurate and reliable performance. The sensing cell lasts for approximately 800 hours. The Latest D TEK Select is also improvised with a charging status indicator, sensor failure indication, and NiMH (nickel metal hydride) batteries. All in an easy-to-use unit with the quality and durability How it Works At the heart of the D-TE K Select Refrigerant Leak Detector is an infrared absorption filtometer. It consists of a sampling cell with an infrared source (or emitter) at one end, an infrared energy detector at the other end, and an optical filter in between them. Like the visible light we see, infrared energy is part of the electromagnetic energy spectrum. Most materials absorb specific and known wavelengths of infrared energy. The particular wavelengths of energy absorbed by a material are known as its absorption spectra. All refrigerants have similar absorption spectra in the range of 7.5–14 micrometers. The infrared source (emitter) creates a high-intensity stream of energy incorporating all wavelengths in the infrared spectrum. The stream passes through the optical filter, which blocks all wavelengths except those that refrigerants absorb. The filtered infrared energy strikes the detector and causes it to heat up. When refrigerant is drawn through the sampling cell by the internal pump, some of the infrared energy is absorbed by the refrigerant. This causes a decrease in the amount of infrared energy reaching the detector and a corresponding drop in the detector’s temperature, which triggers the D-TE K Select to alarm. This whole process takes a fraction of a second. FEATURES AT A GLANCE

• 0.10 ozyear (3 ga)sensitivity
• Sensitive to all refrigerants, including R-22, R-134a, R-404a, R-410a, R-507 (AZ-50) and all CFCs, HCFCs and HFCs.
• 800-hour infrared cell life for low cost of ownership.
• Infrared cell does not weaken over time, so response remains consistent and accurate.
• Infrared cell cannot be overloaded or “poisoned” by exposure to large amounts of refrigerants.
• High-efficiency air sampling pump provides quick response and quick clearing (“zeroing”).
• On-board diagnostics indicate charging status and warn of low battery or infrared cell failure.
• N iMH power stick is environmentally friendly, won’t corrode, and provides greater charging capacity.
• Enhanced filter design for superior filtration and resistance to contaminants.
• Ability to run off AC power adapter.