Description:
QB2000F-01 wall-hung type combustible gas detector is a fixed-type continuous detection of combustible gas concentration in the work environment, or toxic gas concentrations of oxygen concentration the instrument.
QB2000F-wall-mounted single-type ammonia gas-detecting alarm device for the natural diffusion of gas concentration, using imported or catalytic combustion sensor electrochemical sensor, with great sensitivity and excellent repeatability; Large LCD screen leaked gas concentration values are displayed in real time, immediately start sound and light alarm signal exceeds a preset point or driven exhaust system; 4-20mA international standard signal can directly access the DCS system, RS485 digital signals with factory host link; Instruments with embedded micro-controller technology, full Chinese menu is simple, functional, high reliability, the performance of the domestic leading level.
Performance characteristics:
Equipment adopts the advanced 16-bit ultra low power embedded micro controller
128*64 large dot-matrix LCD display
Users can set the high and low alarm
Full Chinese menu to facilitate domestic users to use
First the alarm time display
Real time clock function
Interchangeable modular sensors
Automatic calibration function, reducing errors
Alarm automatically store 500
Battery non-alarm State can work 12 hours or more, (user option)
Standard 4-20mA signal can be directly connected to the factory DCS system (user option)
RS485 digital signals with factory host link (user option)

Technical specifications
Measuring range: see schedule
Applied gases: flammable gases, oxygen, toxic gases
Alarm point: see schedule
Display error: ≤ ± 3% F.S
Response time T90 ﹤ 30s
Display mode: 128*64 dot matrix LCD display real-time data and System State
Warning: wide bright illuminated, 100dB beep when the concentration increase the frequency increase
Alarm: an alarm, user setting
Secondary alarm, user setting
Alarm output: two relay outputs, capacity AC 220V 2A
Signal output: 4-20mA international standard signals can be directly connected to the factory DCS system (user option)
RS485 digital signals with factory host link (user option)
Working environment:-30 ℃ ~ + 50 ℃; Humidity< 95%RH 无结露
Working voltage: AC 220V 50Hz
Non alarm condition battery backup power supply can work continuously for more than 12 hours, combustible gases can be 8 hours of continuous operation (user option)
Protection grade: IP65
Weight: about 1200g (including battery)