Crowcon Tetra 3, 4-gases portable gas detector

Crowcon Tetra 3 4-Gas detector is the above display type, explosive gas measurement option, O2, CO, H2S, SO2, O3, NH3 and CO2

The Crowcon Tetra 3 multi-gas monitor is a multi-gas detector that is compact, durable and easily detects diffused gases in the air. It has a single control button, compact size, clear screen, upper screen design that makes it easy to use during work when wearing it in front of the chest or belt. The machine is suitable for water, telecommunications, food, beverage and other gas monitoring areas.

Despite its compact size Tetra: 3 is extremely solid and waterproof.

Refer to the popular 4-gas detector models available on the market

FEATURES 4 TYPES OF CROWCON TETRA 3 GAS DETECTOR

• Detects 4 gases simultaneously, compact and light
• Infrared sensor options can be selected for CO2 measurement
• 1 single-use button, easy to use even when wearing gloves
• Sturdy structure, anti-slip inert, shockproof, anti-vibration
• Stable Lithium-ion battery, allowing up to 16 hours of continuous use after each battery charge (unaffected memory)
• Waterproof and dustproof, it is possible to dip the whole machine into the water.
• Fast alarm with 95 dBa siren, 2-color visual bright display and vibration alarm
• Easy-to-read screen, built-in backlight, with battery capacity indicator function

The Tetra 3 Crowcon gas detector detects 4 standard gases for gases (carbon monoxide, methane, oxygen and hydrogen sulphide), which can be expanded to gases: ammonia, ozone, sulphur dioxide, H2 filtered CO (for steel mills) and IR carbon dioxide (for safe area use only).

TETRA 3 SPECIFICATION

Size	114 x 71 x 48mm (tapers to 20mm) (4.5 x 2.8 x 1.9ins)
Weight	295g (10.4oz)
Alarms	95dB multiple alarm sounds allow selection of distinctive tones for different alarm levels Internal vibrating alarm
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. Normal display: Real time gas concentration levels Display recall: Peak readings and TWA
Data logging	Timed: 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 logging	Alarm, over range, calibration, bump, on/off, TWA, 1000 events
Battery	Rechargeable Li-ion battery
Operating time	Based 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
Sampling	Diffusion 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)
Humidity	20 to 90% RH@ 40°C non-condensing
Ingress protection	IP65 and IP67
Approvals	ATEX II 2 G Ex ia d IIC T4 Gb (-20°C ≤ Ta ≤ +55°C) BASEEFA05ATEX0187 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 standards	EN60079-0, EN60079-11, EN60079-1 CSA22.2, 152 EN50270, EN50271, EN50104, EN45544, EN60079, IEC61508
PC Interface	RS232 connection from interface module in charger RS232/USB converter available
Calibration	Can be routinely calibrated using Portables PC software or Crowcon Checkbox IMH
Charging	Single 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.

Gas	Range	Typical Alarms
Flammable	0-100% LEL	20
Oxygen	0-25%	19/23.5%
Hydrogen sulphide (H2S)	0-100ppm	5ppm
Carbon monoxide (CO)	1-500ppm	30ppm
Sulpher dioxide (SO2)	0-20ppm	1ppm
Ozone (O3)	0-1ppm	0.1ppm
Ammonia (NH3)	0-100ppm	25ppm
*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.