PM Series Calibrated Gas Leaks
PM
The PM Series – Helium based – Gas Permeation Leak Calibrators 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.
SPECIFICATIONS
ORDERING INFORMATION
OUTLET FITTINGS
PM SERIES SPECIFICATIONS
| Gas |
Supplied exclusively with high purity helium gas ideally suited for precision calibration of leak detectors |
| Leak Rates |
Available in leak rates from 10-5 to 10-10 atm-cc/sec |
| Temperature |
The temperature coefficient is 4%/°C |
| Element |
Durable 7740 Pyrex glass element will not clog; Fused glass to kovar transition |
| Enclosure |
Leaks supplied with 300cc stainless steel cylinder with DOT-3E1800 rating offering a maximum life span |
| Certification |
Supplied with N.I.S.T. certificate at no additional charge |
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 OUTLET FITTINGS
922-011 1-1/8″ O.D. Tube Outlet
922-012 Conflat Flange, 2.75″
922-013 Mini Conflat Flange, 1.33″
922-014 1/4″ Cajon Male VCR
922-015 1/4″ Cajon Famale VCR
922-016 1/4″ Cajon Male VCO
922-017 1/4″ Cajon Female VCO
922-018 NW-16 ISO KF
922-019 Isolation Valve, all metal, bellows sealed
922-020 Isolation Valve, high pressure, required w/10-3 leaks
922-022 NW-25 ISO KF
922-026 NW-40 ISO KF
922-028 1/4″ OD Tube
922-033 NW-10 ISO KF
922-036 1/8″ Female to 1/4″ Male NPT
922-025 1/2″ Cajon Female VCR
922-027 1/2″ Cajon Male VCR
922-034 2″ OD Smooth Tube
922-035 3/4″ OD Smooth Tubebg
473-291-1001 Replacement Fill Valve
Product information is subject to change without notice. Product images may include options or accessories not included with the base model.
Vacuum Instruments Corporation is a pioneer in providing state-of-the-art leak detection solutions for diverse applications and industries. Our systems have ensured the safety and performance of countless products that we use in our daily lives from the cars we drive to the air conditioners in our houses, the pacemakers in our bodies, and the satellites we launch into space.
