Tetra 3 MultiGas Detector Crowcon

Specifications

Size

114 x 71 x 48 mm ( tapers to 20 mm ) ( 4.5 x 2.8 x 1.9 ins )

Weight

295 g ( 10.4 oz )

Alarms

95 dB 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 C19 )

Storage

-25°C to +65°C ( B21:B23-13°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