Description
Crowcon's T4 is a rugged personal multi-gas detector for the four most common gas hazards — oxygen depletion, flammable gases (LEL), carbon monoxide and hydrogen sulphide.
Drop-tested to 4 m with IP65/IP67 sealing, a large single-button interface you can use with gloves on, TWA Resume, and a bright traffic-light Positive Safety Indicator. US alarm configurations shown; versions suffixed CRD include the charging cradle.
Common Applications:
Confined Space • Personal Monitoring • Steel • Petrochemical • Oil & Gas • Water & Wastewater • Construction
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.
- Personal 4-gas monitor for the four most common hazards: oxygen depletion, flammable gases, carbon monoxide and hydrogen sulphide
- TWA Resume function keeps toxic-gas exposure accurate across a full shift, even if the unit is switched off for a break or travel
- Up to 18 hours runtime from the rechargeable Li-ion battery — covers multiple or longer shifts between charges
- +ve Safety traffic-light indicator gives users and supervisors at-a-glance operational and compliance status
- Rugged anti-shock rubber casing, drop tested to 4 m onto concrete
- Large single-button operation with intuitive menus — usable while wearing gloves
- Front-mounted backlit display with 180° flip for easy viewing while worn
- Dedicated sensor for every gas for fast, reliable detection
| Gases & Ranges | Oxygen (O2) 0-30% vol (0.1% res.); Oxygen Long-Life 0-25% vol (0.1%); Flammable 0-100% LEL; Hydrogen sulphide (H2S) 0-100 ppm (1 ppm); Carbon monoxide (CO) 0-1000 ppm (1 ppm), incl. CO H2-immune option. 2, 3 or 4-gas configurations. |
| Size | 135 x 80 x 35 mm (5.3 x 3.1 x 1.4 in) |
| Weight | 282 g (9.9 oz) |
| Durability | Drop tested 4 m onto concrete |
| Alarms | Audible 95 dB; vibrating; bright red & blue LEDs |
| Display | Front-mounted, backlit, 180° flip for easy viewing while worn |
| Data logging | 130 hours of data at 10-second intervals; 3,500 events |
| Battery | Rechargeable Li-ion; up to 18 hours runtime; 5.5 hour recharge |
| Operating temperature | -20 to +55 °C (-4 to +131 °F) |
| Humidity | 10-95% RH @ 40 °C non-condensing |
| Ingress protection | Independently tested to IP65 and IP67 |
| Approvals | ATEX & UKCA II 2 G Ex db ia IIC T4 Gb (Type 2); IECEx Ex db ia IIC T4 Gb; UL/cUL Class 1 Div 1 Groups A, B, C, D; INMETRO; MED (Directive 2014/90/EU) |
| Compliance | EMC Directive 2014/30/EU |
| Crowcon Connect compatible | Yes |
Product Documents & Resources
- T4 Portable Multi-Gas Detector Datasheet (PDF)
- T4 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.