Hotline / Zalo: 033 44 13586
Stay connected:

Crowcon Tetra 3 Multigas Detector with top display



The Crowcon Tetra 3 multigas monitor is a compact, robust and easy-to-use diffusion based detector. Single button operation, small size and clear top-mounted display make it a favourite in the market amongst those working in demanding industrial environments, such as those in the water, telecoms, food, brewing or hydrocarbons sectors.

Overview Crowcon Tetra 3

Gases include the most common four (carbon monoxide, methane, oxygen and hydrogen sulphide), but also an expanded range: ammonia, ozone, sulphur dioxide, H2 filtered CO (for steel plants) and IR carbon dioxide (for safe area use only).

  • Robust
    • Rugged and impact-resistant design provides extra shock and vibration protection – provides protection in the harshest environment
    • Water and dust resistant to IP65 and IP67
    • Can be submerged in water
  • Effective warning
    • 95dB audible alarm – ensures prompt evacuation from hazard zone
    • Vivid red/blue visual alarm
    • Vibrating alarm
  • Reliable
    • Proven sensor technology and software operation – covers you over an extended shift
    • Clear “calibration due” warning
    • Lithium-ion battery provides over 14 hours continuous operation from a single charge with no memory effects
  • User friendly
    • Single button operation for all functions – can be operated with gloved hands
    • Top mounted, backlit display of all gas readings, diagnostics and battery life – ‘at a glance’ operating status


Tetra 3 Specification

Size114 x 71 x 48mm (tapers to 20mm) (4.5 x 2.8 x 1.9ins)
Weight295g (10.4oz)
Alarms95dB multiple alarm sounds allow selection of distinctive tones for different alarm levels
Internal vibrating alarm
DisplayGraphic 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.
Normal display: Real time gas concentration levels
Display recall: Peak readings and TWA
Data loggingTimed: 50 hours at 1-minute data rate (>12,000 data logs of 4 channels)
Threshold: Starts after adjustable pre-set level
Event: >5,000 events
Event loggingAlarm, over range, calibration, bump, on/off, TWA, 1000 events
BatteryRechargeable Li-ion battery
Operating timeBased on four-gas instrument fitted with flammable sensor: A 5-hour charge from flat provides at least 12 hours of continuous use.A 12-hour charge provides at least 14 hours of continuous use
SamplingDiffusion or hand aspirator
Operating temperature-20°C to +55°C (-4°F to +131°F)
Storage-25°C to +65°C (-13°F to +149°F)
Humidity20 to 90% RH@ 40°C non-condensing
Ingress protectionIP65 and IP67
ApprovalsATEX II 2 G Ex ia d IIC T4 Gb (-20°C ≤ Ta ≤ +55°C)
IECEx Ex ia d IIC T4 Gb (-20°C ≤ Ta ≤ +55°C) BAS05.0059
CSA Class I Division 1 Groups A, B, C and D
Safety standardsEN60079-0, EN60079-11, EN60079-1
CSA22.2, 152
EN50270, EN50271, EN50104, EN45544, EN60079, IEC61508
PC InterfaceRS232 connection from interface module in charger
RS232/USB converter available
CalibrationCan be routinely calibrated using Portables PC software or Crowcon Checkbox IMH
ChargingSingle way drop-in charger with UK, EU or US plug or in-line 110V/220V supply
Single way drop-in charger with options as above including PC interface
5 way multi-charger with universal power supply
Vehicle adapter for in-vehicle charging
Universal charger for vehicle, wall and desk mounting with a multi-region plug (supplied with EU/UK/US/Australian inserts) and status indication

Gases and Ranges

Ranges and alarms vary by country and application; these can be configured as required. Each channel can have two instantaneous alarms. Toxic channels also have TWA alarms. Flammable gas calibration is available for methane, propane, butane, pentane, hydrogen and ethylene as standard.

GasRangeTypical Alarms
Flammable 0-100% LEL 20%
Oxygen 0-25%19/23.5%
Hydrogen sulphide (H2S) 0-100ppm 5ppm
Carbon monoxide (CO) 1-500ppm30ppm
Sulpher dioxide (SO2) 0-20ppm1ppm
Ozone (O3) 0-1ppm0.1ppm
Ammonia (NH3) 0-100ppm25ppm
*Carbon dioxide (CO2) 0-5%0.5ppm

* T3 is available in a safe area CO2 version offering 0-5% carbon dioxide measurement.

The CO2 sensor replaces the flammable option and can be supplied with oxygen and toxic sensors.




There are no reviews yet.

Be the first to review “Crowcon Tetra 3 Multigas Detector with top display”

You may also like…

Phone: 024 668 13586
Fax: +84 024 6675 4433
905 C6-K2, My Dinh 1, HN
Thibft kế web bởi