Specification and model of handheld detector

Testing method: Natural diffusion method to measure target gases O2, toxic gases, flammable gases VOC
IMR EX440/EX660 can choose up to 6 types of sensors
IMR EX610 can select up to one type of sensor
Response time semiconductor, catalysis, thermal conductivity T90<30s
CO，H2S，CH4 , O2 T90<30s
Other sensors T90<120 seconds
Accuracy: CH4: ± 5% FS;
CO: Absolute error: ± 5 PPM
Relative error: ±10%；
H2S：±5 ppm
Alarm: visual, sound, vibration alarm;
Adjustable alarm level, high and low alarms;
Toxic gas STEL and TWA alarm;
Working temperature: Toxic gas -20 ℃~50 ℃
Combustible gas -40 ℃~70 ℃
Working humidity: ≤ 95% RH without condensation
Power supply voltage: DC3.7V 6600mAh (lithium battery)
Charging time: 4-6 hours
Continuous working time: ≥ 30h (combustible and toxic gases) IMR EX440/EX660
≥ 8h (flammable and toxic gases) IMR EX610
≥ 300h (toxic gas below 20 ℃) IMR EX610/EX440/EX660
Memory can store 100000 detection data
Calibration methods include power on self-test, automatic calibration, and adjustable calibration points;
Sensor fault self check, high concentration protection, to prevent gas sensor poisoning;
Data transfer USB, capable of data communication with PC end
Explosion proof grade: Exia Ⅱ CT4
IP protection level: IP66
Accessories (optional) EX440 pump, EX660 pump, IX176 pump (with EX610)
EX660 gas probe (telescopic probe length: 100/1150mm, hose length 1500mm)
Size: IMR EX440 147 mm x 76 mm x 37 mm (L x W x H), approximately 350 g
IMR EX610 108.4mm × 61mm × 36mm (L × W × H), approximately 191g
IMR EX660 168 mm × 91 mm × 45mm (L × W × H), approximately 500g