Oxygen gas detector

DC handheld resistance tester


KM 840-O2


KM-840-O2 Portable Oxygen gas detector with voice alarm with safe and reliable quality. It’s with the diffusion sampling mode, can be connected with the external pump. The portable gas detector increases the security for the personnel working.

Features :
● LCD dot matrix display.
● Adjustable preset two-stage alarm level.
● With audible-visual-vibration alarm mode, also with the voice alarm.
● With a back clip, which is easy to carry when working.
● Powered by rechargeable battery with big capacity which support a long working period

Electrical Specifications :
• Gas Type : Oxygen O2
• Sensor Type : Electrochemical sensor
• Sensor Life : 2 - 3 years (Under normal environment conditions).
• Measuring Ranges : O2: 0~30%VOL
• Display Information: Gas types, Concentration value, Concentration unit, Time, Battery status, Alarm status, etc.
• Display : Large screen LCD
• Alarm Storage :With alarm data storage function, can review the data from the detector.
. • Sampling mode : Diffusion sampling (Available for connection with external pump)
• Alarm Mode : Audible-visual-vibration alarm, sound ≥ 75dB
• Power Supply : 3.7V, 1800mAh rechargeable lithium battery, continuous working period over 10 hours.
• Explosion-proof Grade : Ex ib IIB T3
• Protection Grade : IP65
• Working Environment Working Temperature: -20°C~50°C Working Humidity: 0-95%RH (non-condensing) • Body Material : ABS and PC
• Package : Aluminum alloy box
• Dimensions : 140*73*32mm
• Weight :300g (with charger)
• Warranty : 1 years
APPLICATIONS: The portable gas detector used in the gas safety inspection and alarm for industrial scene, such as petroleum refinery, chemical plants, LPG stations, boiler rooms, gas stations, paint spray booths, metallurgy, mining, fire, environmental protection, etc., where need to inspect the gas concentration.

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