Crowcon Tetra 3: Portable Multi Gas Monitor
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Crowcon Tetra 3: Portable Multi Gas Monitor

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Product Overview
  • Personal monitor for oxygen, toxic and flammable gases
  • Simple one button operation can be easily used even with a gloved hand
  • Intrinsically safe
  • Water and dust resistant IP67
  • Rugged and impact resistant design provides extra shock and vibration protection
  • Large, easy to read backlit display
  • Audible, visual and vibrating alarm
  • 30 day count down - calibration due date
  • Li-ion battery (included) gives > 16 hours operation
  • Complete with charging unit
  • Dimensions (HxWxD):112x72x49mm (depth tapers to 20mm)
  • Weight: 270g
  • 2 year warranty
  • Download the Datasheet
  • Comples with EN50270, EN 50271, IEC61508 & EN61779
  • Available in 5 sensor options to detect multiple gases including:
Gas Range Alarm
CH4 (Methane) 0-100% LEL 20%LEL
CO (Carbon Monoxide) 0-25% 19/23.5%
H2S (Hydrogen Sulphide) 0-50ppm 5ppm
02 (Oxygen) 0-500ppm 30ppm
 
 
There is a lead time of 7 days on these units as they are made to order to optimize calibration
Additional Information
The Crowcon Tetra 3 personal gas monitor is based on the tried and tested Tetra instruments. Using proven sensor technology and software the Tetra 3 is able to combine reliable performance with simple operation and rugged design.

Performance

  • Simple indications of operating status can be viewed at a glance
  • 30 day countdown warning of calibration due date
  • Li-ion rechargeable battery gives >16 hours operation
  • True single button operation - the most user friendly range available
  • Easy to read backlit graphic display for gas readings and diagnostics

Robust

  • Tough plastic construction to resist even the toughest shock and vibration
  • Overmolded rubber for added protection
  • Water and dust resistant IP67

Alarms

  • 95 dBA audible alarm
  • Piercingly bright dual red/blue visual alarm
  • Internal vibrating alarm
  • Two levels of instantaneous alarms
  • Time weighted average alarm for 8 hours and 15 minute averages

Technical Specification
Weight 270g
Dimensions (HxWxD): 112x72x49mm (depth tapers to 20mm)
Typical Response Times

Flamable - 20s
Toxic Gas - 30s
Oxygen - 10s

Audible alarm 95dBa: Multiple alarm sounds allow a selection of distinctive tones for different alarms
Visual alarm Dual colour red/blue flashing LEDs
Vibrating alarm Internal vibrating alarm
Display Graphical backlit LCD display with symbols for battery (with proportional indication of remaining operation time), helthy operation or fault warning, calibration due (within 30 day of calibration) and service required.
Display Mode Normal display for real time gas concentration levels
Display recall for peak readings
Battery Li-ion (Lithium-ion) rechargable battery
Operating time Based on the 4 gas unit > 16 hours
Operating temp. range -20?C to +55?C
Humidity 0-99% RH
Ingress Protection IP67
Safety Standards EN50014
EN50020
EN50018
94/9/EC

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