Features
The RLS Refrigerant Leak Standards developed by VTI have been in use worldwide for over 10 years as the Standard for calibrating sniffer-type refrigerant leak detectors. These Leaks are available for all old and new Refrigerants and a wide range of leak rates from 0.01 to over 10 oz/yr. Also, each RLS has a 10:1 adjustable leak rate range (such as 0.1 to 1.0 oz/yr). VTI's calibrations of each of these Standards are Certified to be NIST-Traceable and A2LA Accredited, and indeed they form the basis of traceability for most of the manufacturers of refrigerant detectors in the world.
The RLS has a reservoir of liquid refrigerant that is interconnected with a valve to the vapor reservoir to provide a convenient, long time supply of vapor for the Leak. Depending on use patterns and QA requirements, these Leaks are typically sent to VTI for refill and recalibration after one to three years of use. Unlike the fragile glass capillaries sometimes used by other manufacturers, the RLS uses a crimped stainless-steel capillary leak element that is unbreakable.
To provide the adjustable leak-rate feature, the RLS is calibrated by VTI at 3 pressures yielding 3 leak rates, and an individualized graph of the pressure vs. leak-rate data is included in the calibration Certifications for the Leak Standard. Any specific rate within the adjustable range can be selected using this calibration curve and then adjusting the pressure in the vapor chamber to the value corresponding to that rate on the calibration graph.
The pressure in the vapor chamber is increased by (slowly) opening the valve connecting the two reservoirs, and is decreased by opening the exhaust valve on the vapor reservoir. The pressure gauge connected to the vapor reservoir is used in the calibration of the RLS, and subsequently in adjusting the pressure to the selected value to preserve the NIST-traceability of the leak rate when calibrating a leak detector.
Why choose the RLS Calibrator ?
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