گازسنج پرتابل چند منظوره کروکن انگلستان مدل CROWCON Tetra 3

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

295g (10.4oz)

95dB multiple alarm sounds allow selection of distinctive tones for different alarm levels
Internal vibrating alarm

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

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

Alarm, over range, calibration, bump, on/off, TWA, 1000 events

Rechargeable Li-ion battery

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

Diffusion or hand aspirator

-20°C to +55°C (-4°F to +131°F)

-25°C to +65°C (-13°F to +149°F)

20 to 90% RH@ 40°C non-condensing

IP65 and IP67

ATEX II 2G Ex ia db IIC T4 Gb (-20°C ≤ Ta ≤ +55°C)
BASEEFA05ATEX0187
IECEx Ex ia db IIC T4 Gb (-20°C ≤ Ta ≤ +55°C) BAS05.0059
CSA Class I Division 1 Groups A, B, C and D

EN60079-0, EN60079-11, EN60079-1
CSA22.2, 152
EN50270, EN50271, EN50104, EN45544, EN60079, IEC61508

RS232 connection from interface module in charger
RS232/USB converter available

Can be routinely calibrated using Portables PC software or Crowcon Checkbox IMH

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