Crowcon Tetra 3

What is it?
The Crowcon Tetra 3 is a robust, compact, and portable multi-gas detector designed for continuous monitoring of hazardous gases in industrial environments. The device reliably measures combustible gases, oxygen (O₂), carbon monoxide (CO), and hydrogen sulfide (H₂S), and can be easily expanded with additional sensors for specific applications. The Tetra 3 is ideal for use in sectors such as petrochemicals, mining, refining, and other demanding work environments. Thanks to its clear display and user-friendly interface, the device is easy to read and operate, even under tough conditions.

How does it work?
The Tetra 3 uses advanced sensor technologies to continuously measure the concentrations of various gases in the surrounding environment. The device provides immediate visual, audible, and vibration alarms when preset limits are exceeded, allowing users to quickly respond to hazardous situations. It features a rugged housing that is resistant to dust, water, and shocks, ensuring reliable operation in harsh environments. Additionally, the device supports data logging and can connect via a simple interface to other systems for monitoring and reporting.

What problems does it solve?
Many industrial environments face risks from exposure to toxic and combustible gases, as well as oxygen deficiency. The Crowcon Tetra 3 offers an effective solution through timely detection and alerts, reducing accidents and health risks. It helps maintain a safe workplace by providing reliable gas detection during inspection, maintenance, and production processes. Thanks to its versatility and reliability, the Tetra 3 is an essential tool for professionals working in hazardous conditions.

Dimensions
114 x 71 x 48 mm (tapering to 20 mm)

Weight
295g (10.4 oz)

Alarms
95dB multiple alarm tones for different alarm levels
Internal vibration alarm

Display
Graphic LCD with backlight showing all gas channels simultaneously. Graphical icons for battery (with proportional remaining runtime), healthy operation or fault warning. Start-up indication when calibration is due, overdue, or maintenance is required.
Normal display: Real-time gas concentration levels
Recall display: Peak values and TWA

Data Logging
Timed: 50 hours at 1-minute intervals (>12,000 logs for 4 channels)
Threshold: Begins after configurable preset level
Event: Over 5,000 events

Event Logging
Alarms, over range, calibration, bump test, power on/off, TWA – 1,000 events

Battery
Rechargeable Li-ion battery

Runtime
Based on a four-gas instrument with combustible gas sensor: A 5-hour charge from flat provides at least 12 hours continuous use. A 12-hour charge provides at least 14 hours continuous use.

Sampling
Diffusion or manual aspiration

Operating Temperature
-20°C to +55°C (-4°F to +131°F)

Storage Temperature
-25°C to +65°C (-13°F to +149°F)

Humidity
15-95% RH at 40°C non-condensing

Ingress Protection
IP65 and IP67

Certifications
ATEX II 2G Ex ia db IIC T4 Gb (-20°C ≤ Ta ≤ +55°C) BASEEFA05ATEX0187
IECEx Ex db ia 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 via interface module in charger
RS232/USB converter available

Calibration
Routine calibration via Portables PC software or Crowcon Checkbox IMH

Accessories
Integrated crocodile clip
Optional accessories:
Universal harness plate, shoulder strap, chest harness, aspirator assembly (flow plate, lamp, and 2m/6ft hose), fixed and telescopic sampling probes, and inline water separator

Charging
Single drop-in charger with UK, EU, or US plug or inline 110V/220V power supply
Single drop-in charger with options above including PC interface
5-way multi-charger with universal power supply
Vehicle adapter for charging in vehicle
Universal charger for vehicle, wall, and desk mounting with multi-regional plug (includes EU/UK/US/Australian adapters) and status indicator

Crowcon Connect Compatible?
Yes

Interested?