Crowcon Tetra 3: Portable Multi Gas Monitor

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