Metal Orifice Leak Calibrators MD-490S Similar Halogen Sniffing Applications – EMOT Series

Metal Orifice Leak Calibrators

Ideal for calibrating VIC’s TurboTest™ MD-290S, MD-390S, MD-490S and halogen sniffing instruments.

These leaks are specifically designed for atmospheric sniffing applications. The leak standard features a metal orifice with zero dead space volume between leak element and outlet fitting. This allows for direct reading of leak rates in atmospheric conditions. Leaks are available in helium, SF6, and most refrigerant gases.

High Performance features

Construction providing direct reading of leak rates in atmosphere. Specifically designed for atmospheric sniffing.



Non-breakable stainless steel leak element



Low temperature coefficients


Leak Rate

Wide range of leak rates available, 10-1 to 10-6 atm-cc/sec



Supplied with 300cc stainless steel cylinder with DOT3E1800 rating offering maximum life span



Supplied with N.I.S.T. certificate at no additional charge


Outlet Fitting

Unique outlet fitting filter protects orifice from clogging


Ordering Information for EMOT Series

Specify leak rate when ordering VIC Part No. 921-XYY, where X = Leak Rate Exponent, YY = Gas Code and available Leak Rates are 10-1, 10-2, 10-3, 10-4, 10-5, 10-6

Example: EMOT No. 922-621 = 10-6 Range R-134A Leak

All leaks filled with high purity gases. Gases available include: R-12, R-22, R-23, R-134A, Helium, and SF6. (Gas ordering codes below in boldface.) Other gases and specific leak rate values available upon request.

01     Helium
09     R-12
10     R-22
11     R-23
18     SF6
19     Xenon
21     R-134A