- Model NumberQB10N
- Brand NameHNCCDQ
- Payment TermsT/T, paypal
Brief introduction:
QB10N type gas detection alarm (hereinafter referred to as the alarm) is a fixed instrument that can continuously detect the concentration of gas in the operating environment.
The alarm device is a natural diffusion method to detect gas concentration, using imported sensors, with excellent sensitivity and repeatability; The LED digital display suitable for factory application can display the concentration value of the leakage gas in real time, and immediately start the acousto-optic alarm signal or drive the exhaust air system beyond the preset alarm point; MA signal of international standard (4~20) can be directly connected to the DCS system of the factory. RS485 digital signal is connected to the upper computer of the factory. The instrument adopts embedded micro-control technology, simple operation, complete functions, high reliability, reliable performance of the whole machine.
Main functions:
The instrument adopts the advanced 16-bit ultra-low power embedded micro-controller
Inlet sensor
Highlight LED digital display
It can be connected with relay and acousto-optic alarm
Safe operation without opening cover by infrared remote control
Users can set up high and low alarm points by themselves
Calibration expiration reminder function
Sensor life expiration warning function
Powerful communication function, most parameters can be modified and query through RS485
Gray resurfacing plant setting function
Password verification is required for important operations to effectively prevent misoperation
Standard (4-20) mA signal or RS485 digital signal can be directly connected to the factory DCS system
Technical parameters:
Measurement range: 0-100%LEL
Status indicator: green indicates normal operation, yellow indicates failure, and red indicates concentration alarm
Applicable gas: combustible gas
Alarm point: 20%LEL and 50%LEL, the user can change the setting
Display error: less than or equal to 5%FS
Weight: about 1000g
Response time: 90<30s
Working environment: - 30 ° C ~ + 50 ° C;
Humidity <90%RH no condensation
Display mode: LED digital tube display
Working voltage: DC24 plus or minus 15%
Operation mode: infrared remote control
Sampling method: natural diffusion
Explosion-proof grade: ExdIICT6
Use cable: 3 x 1.5mm2 or 4 x 2.5mm2 shielded cable
Protection level: IP66
Transmission distance: less than or equal to 1000m
Signal output: standard 4-20ma signal;
RS485 isolated digital signal (one out of two)
