Wall mounted HCN gas detector transmitter with range 0-20ppm and replaceable sensor

Brief introduction: QB2000N is wall mounted fixed gas detection and monitoring device. It is sensitive to toxic gas such like HCN gas. It detect gas by use of natural diffusion, not by pump. With relay output, once the concentration exceed the preset alarm point(threshold) it will start the acoustic-optical alarm on the central unit and drive the external equipment like exhaust fans. It has been widely used in petrol, chemistry, metallurgy, artifice, gas transportation,