The 491Flex™ System is a manually operated, expandable, full capability permeation tube system for generating precision calibration gas mixtures.  The 491Flex™ is ideally suited for creating trace concentration – ppm, ppb, and pptr – mixtures.  The system uses KIN-TEK Trace Source™ disposable, refillable and diffusion permeation tubes for over 550 Supported Chemicals.The 491Flex™ Gas Standard Generator System is composed of one or more modules, depending on application requirements.

 The 491Flex™ Gas Standard Generator System provides:

· Permeation tube oven with wide temperature range controlled to 0.1 °C

· Primary dilution mass flow rate

· Standby, zero and span modes

· Single-oven module can create mixtures with up to 8 components

· Expandable (limited)

 491Flex™ features:

ü Complete, integrated, ready-to-use turnkey system

ü Manually operated via front panel controls

ü Direct readout of oven temperature and mass flow rate

ü Modes of Operation: standby, zero and span

ü Designed for limited expandability

ü Flow path designed for maximum flexibility with minimum error

ü Flow path suitable for reactive gases – mixture contacts only glass, Teflon® and stainless steel (other materials available)

ü Optional component flow path materials available (sulfinert-coated, all stainless, etc.)

ü Accepts disposable permeation tubes, diffusion tubes, ultra-high rate liquid filled tubes, wafer tubes, and prefilled gas fed permeation tubes

ü Accepts up to 8 disposable tubes per oven with maximum 6 inch length x 1/4 inch diameter (KIN-TEK HRT, SRT and EL tubes)

ü Accepts one of KIN-TEK refillable LFH, and 57 Series tubes per oven