Crowcon Tetra Personal Multigas Monitor with optional internal pump

Part no.

Crowcon-Tetra

The Crowcon Tetra is a flexible Multigas Monitor for the detection of flammable gases, oxygen and a wide range of different toxic gases.

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Crowcon Tetra Multi-Gas Monitor

The Crowcon Tetra is a compact and highly flexible portable multi-gas detector designed for personal safety monitoring in industrial environments. Capable of detecting up to four gases simultaneously, the Tetra is widely used in the utilities, chemical processing, oil & gas, and hydrocarbon industries. Its intrinsically safe design and compliance with IEC 61508-3 make it suitable for operation in hazardous areas where reliable gas monitoring is critical.

Key Features

Simultaneous monitoring of up to four gases
Detects:
- Flammable gases
- Oxygen (O₂)
- Toxic gases
- Carbon dioxide (CO₂) with optional infrared sensor
Available with:
- Rechargeable battery pack
- Disposable battery pack
Intrinsically safe for hazardous area operation
Embedded software designed to IEC 61508-3 requirements
Digital interchangeable i-module sensor technology
Loud 94 dBA audible alarm
Selectable alarm tones
Dual-colour red and blue visual alarm
Integrated vibrating alarm as standard
Simultaneous four-gas display
Automatic display backlight
Peak gas reading mode
TWA (Time-Weighted Average) recall
Data and event logging
Simple infrared PC communication interface
Rugged construction with IP65 ingress protection

Typical Applications

Utilities

Water treatment plants
Wastewater treatment facilities
Utility service tunnels
Metering stations

Oil & Gas

Refineries
Offshore platforms
Pipeline maintenance
Tank farms
Fuel storage facilities

Chemical Processing

Production plants
Tank loading operations
Chemical storage areas
Process monitoring

Confined Space Entry

Tanks
Vessels
Pits
Chambers
Sewers

Industrial Maintenance

Hot work permits
Shutdown activities
Plant inspections
Safety monitoring

Technical Specifications

Specification	Details
Product	Crowcon Tetra
Type	Portable Multi-Gas Monitor
Gas Capacity	Up to 4 Gases
Sensor Technology	Digital Interchangeable i-Module Sensors
Flammable Gas Detection	Yes
Oxygen Detection	Yes
Toxic Gas Detection	Yes
Optional CO₂ Detection	Infrared Sensor Version
Audible Alarm	94 dBA
Visual Alarm	Dual Colour Red / Blue LEDs
Vibrating Alarm	Standard
Display	Simultaneous 4-Gas Display
Backlight	Automatic
Peak Reading Mode	Yes
TWA Recall	Yes
Data Logging	Yes
Event Logging	Yes
PC Interface	Infrared (IR)
Ingress Protection	IP65
Safety Approval	Intrinsically Safe
Battery Options	Rechargeable or Disposable

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