PM Series Calibrated Permeation Leaks

The PM Series leaks utilize a durable 7740 Pyrex glass permeation leak element which permits diffusion of helium gas. Helium diffuses through the glass membrane at a constant rate determined by the membrane thickness and surface area. These leaks are highly resistant to clogging by nature of their design.

High Performance features

• Supplied exclusively with high purity helium gas Ideally suited for precision calibration of leak detectors

• Available in leak rates from 10^-5 to 10^-10 atm-cc/sec

• Temperature coefficient is 3.2%/°C

• Durable 7740 Pyrex glass element will not clog

• Leaks supplied with 300cc stainless steel cylinder with DOT-3E1800 rating offering maximum life span

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

• Fused glass to kovar transition

• Available with a wide variety of outlet fittings

Ordering Information for PM Series

Available in Helium only. All PM models are supplied with 1/2" OD smooth tube connection unless otherwise specified. Specify leak rate when ordering, as follows: P/N 923-X01 where X = Leak Rate Exponent and available Leak Rates are 10^-5, 10^-6, 10^-7, 10^-8, 10^-9, 10^-10

Example: PM No. 923-801 = 10^-8 range (helium) leak.


	PM Series Calibrated Permeation Leaks


		The PM Series leaks utilize a durable 7740 Pyrex glass permeation leak element which permits diffusion of helium gas. Helium diffuses through the glass membrane at a constant rate determined by the membrane thickness and surface area. These leaks are highly resistant to clogging by nature of their design. High Performance features • Supplied exclusively with high purity helium gas Ideally suited for precision calibration of leak detectors • Available in leak rates from 10^-5 to 10^-10 atm-cc/sec • Temperature coefficient is 3.2%/°C • Durable 7740 Pyrex glass element will not clog • Leaks supplied with 300cc stainless steel cylinder with DOT-3E1800 rating offering maximum life span • Supplied with N.I.S.T. certificate at no additional charge • Fused glass to kovar transition • Available with a wide variety of outlet fittings Ordering Information for PM Series Available in Helium only. All PM models are supplied with 1/2" OD smooth tube connection unless otherwise specified. Specify leak rate when ordering, as follows: P/N 923-X01 where X = Leak Rate Exponent and available Leak Rates are 10^-5, 10^-6, 10^-7, 10^-8, 10^-9, 10^-10 Example: PM No. 923-801 = 10^-8 range (helium) leak.








Information Request Form Calibrated Gas Leaks