Tetra 3 Multi Gas Detector from Crowcon Detection Instruments

The Tetra 3 multi gas detector is proven to serve the needs of today's most arduous industrial environments. It is designed with the user in mind, the top mount display, full function data and event logs, audible, visual and vibrating alarms delivery top end performance in a small and lightweight package.

Reliable

Proven sensor technology and software operation
Simple indications of operating status can be viewed at a glance
30 day countdown warning of calibration due date

Performance

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 to IP65 and IP 67

Alarms

95 dBA audible alarm
Piercingly bright dual red/blue visual alarm
Internal vibrating alarm
Time weighted average alarm for 8 hours and 15 minute averages

Instrument Specifications

Audible Alarms	95 dBA, multiple alarm sounds allow selection of distinctive tones for different alarm levels
Visual Alarms	Dual color red/blue flashing LED pair in gas hazard
Vibrating Alarm	Internal
Display	Graphic LCD with backlight, giving simultaneous display for all gas channels. Graphic symbols for battery (with proportional indication of remaining operation time), healthy operation or fault warning. Start up indication when calibration is due, overdue or service required.
Display Mode	Normal display for continuous real time gas concentration levels, display recall for Peak readings and TWA
Datalogging, Optional	Timed datalogging: 50 hours at 1 minute intervals data rate, 3,000 records, threshold logging starts after adjustable preset level, event logging > 1500 events
Battery Type	Rechargeable Li-Ion battery
Operating Time	Rechargeable: 16 hours minimum
Sampling	Diffusion of hand aspirator
Temperature Range	-4 to 131°F
Humidity	20-90% RH
PC Interface	RS232 connection from interface module in charger, RS232/USB converter available
Accessories	Tetra 3 is supplied with an integral alligator clip
Approvals	Class I, Div I, Groups A, B, C, D, pending, ATEX II2G EEx iad IIC T4 BASEEFA 03ATEX0193
Ingress Protection	IP 65 or IP 67
Weight	10.4 ounces
Dimensions	Rechargeable: 4.5" x 2.8" x 1.9"

Sensor Specifications

Gas	Range	Alarm
Carbon Monoxide	0-500 ppm	30 ppm
Combustible	0-100% LEL	20% LEL
Hydrogen Sulfide	0-100 ppm	5 ppm
Oxygen	0-25% Vol	19.5% (low), 23.5% (high)
Sulfur Dioxide	0-20 ppm	1 ppm
Ozone	0-1 ppm	0.1 ppm
Ammonia	0-100 ppm	25 ppm
Carbon Dioxide*	0-5%	0.5%

*The Tetra 3 is available in a safe area Carbon Dioxide version offering 0-5% CO2 measurement. The CO2 sensor replaces the flammable option and can be supplied with oxygen and toxic sensors.

Other ranges and alarm levels are available on request. Each gas channel can have two instantaneous alarm levels set, Toxic channels also have Time Weighted Average alarms. Flammable gas calibration is available for methane, propane, butane, pentane, hydrogen and ethylene as standard.

Ordering Information

The Tetra 3 multi gas detector is supplied with an integral belt/pocket clip. For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email sales@afcintl.com

Downloads

Tetra 3 gas detection instrument literature

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