Gas flow calibrator PM SERIES

leak

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. Gas: Supplied exclusively with high purity helium gas ideally suited for precision calibration of leak detectors Leak rate: 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 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 Product information is subject to change without notice. Product images may include options or accessories not included with the base model.