Product Name: Hydrogen sulfide determination 

 Product Model: CLH100 type 

 Coal safety sign: MFA090089 

 Description: 
 The product is a new generation of miniature smart detectors, can continuously detect the presence of flammable, explosive flammable gas mixtures in concentration of hydrogen sulfide. With sound and light alarm clock, voltage, voltage alarm, 0:00 automatic tracking adjustment, easy to use features. 

 The main characteristics and uses: 
 CLH100 hydrogen sulfide determination (hereinafter referred to as instruments) electrochemical sensors, the intelligent control of embedded microcontrollers, four LED display. Small size, light weight, simple operation, easy maintenance, apparatus, membrane touch switch, good sealing performance, accurate and reliable. This instrument is widely applied in the coal mine, metallurgy, environmental site, such as continuous monitoring of hydrogen sulfide concentration in the working environment of flammable and explosive flammable gas mixture, and audible and visual alarm when the overrun. 

 How it works: 
 When the instrument used to measure the hydrogen sulfide in the air, the electrochemical sensor directly to the diffusion gas reaction with the environment, resulting in a linear change in voltage signal. Signal by the linear amplifier input to the microcontroller A / D converter is converted to a digital signal, the microprocessor data processing, digital display, the hydrogen sulfide concentration, when the hydrogen sulfide concentration is higher than the alarm set point, the instrument audible and visual alarm signal. The instrument has a low battery voltage alarm and automatic shutdown. 

 The main technical indicators: 

 Item Specification 
 Measurement range (0 to 100) ppm 
 Range (0 to 10) ppm of H2S> (10 ~ 50) ppm of H2S (50 ~ 100) ppm of H2S 
 The basic error of ≤ ± (0.3 +2%) of true value to true value ≤ ≤ ± 5% ± 8% of true value 
 Resolution 1ppm of H2S 
 Sensor life> 24 months (import electrochemical) 
 Response time <20s 
 4 LED display 
 Alarm method intermittent audible and visual alarm, alarm points continuously adjustable 
 Alarm point is continuously adjustable (factory set 6ppmH2S) 
 Intensity of sound level ≥ 80dB 
 Degree of protection IP54 
 Battery Pack Ni-Mh1800mAh × 3 
 Continuous work time> 7 days 
 Explosion-proof type Exib I 
 Dimensions 116 × 56 × 25mm 
 Weight 0.2kg 
 Equipment monomer combination charger