Bosean BH-4A Portable Multi Gas Detector (CO, H2S, O2, LEL)

Range/ Resolution/ L-alarm/ H-alarm

CO: 0-1000ppm/ 1ppm/ 50ppm/ 150ppm

O2: 0-30%vol/ 0.1%vol/ 19.5%vol/ 23.5%vol

H2S: 0-100ppm/ 0.1ppm/ 10ppm/ 20ppm

EX: 0-100%LEL/ 1%lel/1%vol/ 20%LEL/ 50%LEL

Accuracy: ≦±5% F.S.

Response Time: ≦30s

Indication: LCD displays real-time and system status; LED, audio and vibration alert for gas leakage, fault and low voltage.

Sensor: O2 /H2S / CO: plug-in electrochemical sensor; Combustible gas (LEL): plug-in catalytic combustion sensor.

Working environment: -20℃～50℃, ＜95%RH (no dew)

Alarm Type low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm

Backlight: Automatically activated when working in poor lighting environment or the alarm sounding or the button is knobbed down.

Power Source: DC3.7V Li-on battery, 1800mAh

Charging time: 6h~8h

Working time: ≧8h continuously (without alarming)

Explosion-proof grade: Ex ib llC T4 Gb

Weight: Appr. 400g (with battery)

Dimensions: 130mm×67mm×30mm(L × W × H)

Standard accessories: Suit case packaging, 1pc; Charger, 1pc; Calibration cap, 1pc; Communications cable, 1pc; User manual, 1pc.