4-20mA/RS485 Signal Wall-Mounted Fixed Oxygen Sensor O2 Gas Detector Alarm Monitor QB2000F

QB2000F is a 4-20mA/RS485 Signal Wall-Mounted Fixed Oxygen Sensor O2 Gas Detector Alarm Monitor QB2000F which designed to monitor the gas leakage in the working environment continuously by adopting imported catalytic combustion or electro-chemical gas sensors. The detector has excellent sensibility, quite good accuracy, linearity and receptivity; Big English LCD displays the real-time concentration of the leakage gas. With 2 relay output, once the concentration exceed the preset alarm point (threshold), it will start the acoustic-optical alarm and it can drive the external equipment like exhaust fans; Through 4-20mA signal output, it can be directly connected into the factory DCS system, through RS4845 signal output, it can be connected with factory’s principle computer.

• Adopts advanced 16 digit ultra-low power consumption embedded micro controller.
• 128*64 dot matrix ultra-large liquid-crystal display
• Adjustable H-alarm and L-alarm values
• Displays the time of first alarm.
• Real-time display
• Replaceable sensor module design
• Automatic calibrating to ensure the detecting accuracy.
• 200 pieces alarm record can be stored automatically
• Password management and IR remote function
• The optional internal battery backup can work continuously for 24 hours (no alarming status)

Packaging & shipping :

Our service:

a. All products will have been strictly Quality Checked before packaging. 
b. All products will be well packaged before shipping. 
c. All the similar products have two years warranty. The calibration within one year is FOC with the fright cost charged. And we promise the products will be free from maintenance within warranty period.

Company Information                                                                                                                 Henan Chicheng Electric Co., Ltd is a ISO9001-2000 certified high-tech import and export company and also the government permitted gas detecting device manufacture with Measurement of production License (MC), The explosion-proof certificate (EX) and Fire type certificate (CNAS) approved, we are in in the research and marketing a range of portable and fixed gas detection products, industrial process automation control, safety protection and analytical instrument and we are in Zhengzhou Henan China.