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  K n o w z ™

Knowz
  K n o w z ™

Combustible gas / Ammonia / CFC detector with optional relay ("DRC" - dry relay contacts).


   $48 - $125 - Combustibles (0-80% LEL)

 $165 - $242 - Ammonia (0-300 ppm)

 $76 - $153 - R-21/22/113/134a (0-3000 ppm)

 
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  PRODUCT DETAILS

Full details including operational description, user instructions, specifications, ordering options, and mechanical disagrams are available in the product datasheet (see Product Links).

Alarm Level

  • Specify alarm level for factory calibration
  • Alarm level from 10-80% of reading range
  • Level is field-adjustable by user via trimpot


  • State Indications

  • Normal and alarm state indication
  • Red LED steady=normal, blinking=alarm
  • Optional beeper for alarm indication
  • Optional relay for alarm/power fail indication


  • Environmental Requirements

  • Diffusion sampling
  • 10% minimum atmospheric oxygen
  • 10% to 95% R.H. (non-condensing) oper.
  • 0.8 to 1.2 Atmosphere operating pressure


  • Relay Types

  • SPST - NO or NC contacts (2)
  • SPDT - NO and NC contacts (3)
  • Auto-resetting operation - all types
  • Latching (manual reset) - SPDT types
  • Choose SPST-NC for power fail detection

  •   Calibration

  • All devices factory calibrated
  • Span trimpot for field calibration
  • Do not use dessicated (0% R.H.) cal gas
  • Six month recalib. schedule recommended
  • Periodic factory recertification avail.


  • Incompatible Uses

  • Not for use in anaerobic environments
  • No dusty or corrosive environments
  • No condensing moisture
  • Not for use with dessicated calibration gas
  • No butane gas bump-testing
  • Adversely affected by silicone vapors
  • Very high gas levels may damage sensor


  • Mechanical

  • Open-frame circuit size: 61 x 48 x 26 mm
  • No-flange enclosure size: 74 x 56 x 26 mm
  • Flanged enclosure size: 74 x 82 x 26 mm
  • Open-frame weight: 30 g
  • Enclosed weight: 50 g


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