Frequently bought together:
Description
The Tetra 3 is Crowcon's compact multi-gas monitor for up to four gases — a rugged, simple one-button design specified for harsh environments, with sensor options beyond the standard four (ammonia, ozone, SO2 and IR CO2 on safe-area versions).
US (USA CSA) configurations shown.
Common Applications:
Confined Space • Personal Monitoring • Petrochemical • Wastewater • Steel • Utilities
Need help selecting the right configuration? Call CPS Calibrations at (865) 900-8844 — every configuration on this page is a factory Crowcon build, and we calibrate what we sell.
- Specialist 4-gas personal monitor with a wide range of sensor options beyond the standard four gases
- Rugged impact-resistant design with extra shock and vibration protection; can be submerged in water
- Top-mounted backlit display shows all gas readings, diagnostics and battery life at a glance
- Single-button operation for all functions — can be operated with gloved hands
- 95 dB audible alarm with selectable tones, vivid red/blue visual alarm and vibrating alarm
- Clear calibration-due warning; proven sensor technology and software
- Li-ion battery provides up to 14 hours continuous operation from a single charge, with no memory effects
- Full function data and event logging
| Gases & Ranges | Up to 4 gases: Flammable 0-100% LEL (methane, pentane, propane, butane, ethylene, hydrogen and others); Oxygen (O2) 0-25%; Hydrogen sulphide (H2S) 0-100 ppm; Carbon monoxide (CO) 0-500 ppm; CO H2-compensated 0-500 ppm; Sulphur dioxide (SO2) 0-20 ppm; Ozone (O3) 0-1 ppm; Ammonia (NH3) 0-100 ppm; Hydrogen cyanide (HCN) 0-30 ppm; Carbon dioxide (CO2) 0-5% (IR, safe-area version only — replaces the flammable sensor). |
| Size | 114 x 71 x 48 mm tapering to 20 mm (4.5 x 2.8 x 1.9 in) |
| Weight | 295 g (10.4 oz) |
| Alarms | Audible 95 dB (multiple selectable tones); internal vibrating alarm; vivid red/blue visual alarm |
| Display | Graphic LCD with backlight; simultaneous display of all gas channels; battery, healthy-operation and fault symbols; calibration-due indication |
| Data logging | Timed: 50 hours at 1-minute rate (>12,000 data logs of 4 channels); threshold logging; >5,000 events |
| Battery | Rechargeable Li-ion; 5-hour charge from flat gives at least 12 hours use; 12-hour charge gives 14 hours |
| Sampling | Diffusion or hand aspirator |
| Operating temperature | -20 to +55 °C (-4 to +131 °F) |
| Humidity | 15-95% RH non-condensing |
| Ingress protection | IP65 and IP67 |
| Certification | ATEX II 2G Ex db ia IIC T4 Gb (Baseefa05ATEX0187); IECEx Ex db ia IIC T4 Gb (BAS05.0059); CSA Class I Div 1 Groups A, B, C, D |
| Standards | EN 60079-0/-11/-1, ATEX 2014/34/EU; CSA 22.2; EN 50270 |
Product Documents & Resources
- Tetra 3 Portable Multi-Gas Detector Datasheet (PDF)
- Tetra 3 Portable Multi-Gas Detector User Manual (PDF)
Document files are being added to this page. Need one now? Email info@cpscalibrations.com and we'll send it straight over.