FlexStream Gas Standards Generator

Product Announcement from Kin-Tek Laboratories Inc.

FlexStream Gas Standards Generator-Image

KIN-TEK's FlexStream™ automated gas standards generating instrument offers flexibility for creating precision gas mixtures. Mixtures are produced by diluting the emission from permeation tubes, or diffusion tubes, with an inert diluent, typically nitrogen or zero air. The FlexStream™ is ideally suited for creating trace concentration - ppm, ppb, and pptr - mixtures. The FlexStream™ is built around a microprocessor-based stand-alone Permeation Tube Unit. This unit provides a temperature-controlled permeation tube oven, front panel touch-screen interface and dilution mass flow control. The FlexStream™ is easily transportable and can integrate with other KIN-TEK gas mixing systems (contact the Factory). Mixtures containing up to 8 components are possible. The FlexStream™ can use all KIN-TEK Trace Source™ permeation and diffusion tubes.

Features include:

  • Complete, integrated, ready-to-use turnkey system
  • Automated operation with direct readout of concentration
  • Modes of Operation: standby, zero, span and purge
  • Touch-screen interface for local setup and manual control
  • Modbus connectivity for integration with existing systems
  • Designed for expandability
  • Flow path designed for maximum flexibility with minimum error
  • Flow path suitable for reactive gases - mixture contacts only glass, Teflon® and stainless steel (other materials available)
  • Accepts disposable permeation tubes, diffusion tubes, ultra-high rate liquid filled tubes, wafer tubes, and prefilled gas fed permeation tubes
  • Accepts up to 8 disposable tubes with maximum 6 inch length x 1/4 inch diameter (KIN-TEK HRT, SRT and EL tubes)
  • Accepts one of KIN-TEK refillable LFH, ULED and 57 Series tubes
  • High mass oven with electronic PID control
  • Temperature Control Range: 5 ºC above ambient from 20 to 150 ºC (heat only)
  • Temperature Setpoint Resolution: 0.01 ºC across control range
  • Temperature Display Resolution: 0.01 ºC on front panel touch screen
  • Standard Flow Range: 0.25-5.0 liter per minute
  • Optional Flow Ranges: 0.1-0.5, 0.1-1.0, 0.5-10.0 liter per minute
  • Flow Control over Calibrated Range: ≤ ±1.5 % of reading
  • Flow Change - 0 to Full Scale: < 10 sec (2 time constants)
  • Mode Change - Zero at 1 lpm to Span at 1 lpm: < 5 sec (2 time constants)
  • Output Concentration Range: below 1 ppb to over 1000 ppm depending on emission rate and dilution flow rate
  • Local Interface: color touch screen display with virtual keypad
  • Remote Interfaces: RS-232 and Ethernet
  • Communication Protocol: Modbus RTU
  • Room Operating Temperature Range: 0 to 50 °C (room temperature must be maintained at least 5 °C below permeation tube temperature and no higher than 50 °C)
  • Room Operating Humidity Range: 0 to 95% noncondensing
  • Storage Temperature Range: -40 to 60 °C
  • Storage Humidity Range: 0 to 95% noncondensing

  • Diluent Inlet Pressure: 50 psig regulated (customer-provided)
  • Span Gas Outlet Pressure Range: 0 to 20 psig

  • Power Requirements: Standard: 110 to 125 VAC, 60 Hz, 2 A
  • Power Requirements: Optional (specified at time of purchase): 220 to 250 VAC, 50 or 60 Hz, 1 A

  • Dimensions: 7.5 inch Width x 13.5 inch Height x 20 inch Depth (add 3.5 inch to Depth for front panel inlet filter clearance)
  • Weight: 30 lb

FlexStream™ benefits include:


  • Trace concentration mixtures for reactive compounds
  • Applicable to a wide range of compounds
  • PPM and PPB mixtures with single step dilution
  • Calibration even for some reactive mixtures
  • Dynamic blending - immediate use eliminates storage degradation
  • Simplifies complex mixture preparation
  • Concentrations traceable to NIST (through physical variables)


  • Simple operation
  • Automated calibrations


  • Save space - one unit replaces many gas cylinders
  • Reduce cost of multi-point calibration


  • Replaces high pressure gas mixture
  • User deals with only very small quantities of analyte compounds