CD8 can simultaneously detect methane, carbon dioxide, carbon monoxide, oxygen, hydrogen sulfide, temperature, humidity, differential pressure of 8 parameters of the concentration, and overrun alarm.

Determination of lithium batteries and external explosion-proof power supply with dual power supply mode.

Measuring device comes with frequency, RS485 two kinds of output mode, and monitoring system networking.

Applicable to all the need to detect environmental conditions of the site, such as mines, fire, limited space, chemical, environmental protection, emergency and other areas with security environment

Explosion-proof type: intrinsically safe and flameproof.

1.5 structure

Stainless steel shell, dimensions;

Second, product characteristics

Built-in frequency and RS485 output, can be used as multi-parameter sensor, and monitoring system networking, on-line monitoring

Built-in sampling pump, pump sampling, sampling distance of more than 200 meters

 In addition to gas, can measure temperature, humidity, differential pressure

Stainless steel housing

Integrated monitoring instrument for mine gas and environment parameters

Third, the structural characteristics

When used in the measuring device, an external leather cortex can be added. Detector style nice. Using  large-screen LCD display environmental parameters.

Fourth, the main performance and technical parameters

(A) measurement requirements

1. Simultaneous continuous detection of methane, carbon dioxide, carbon monoxide, oxygen, hydrogen sulfide, temperature, humidity, differential pressure of a total of 8 kinds of parameters of the concentration, and overrun alarm;

2. Covering mine gas and environmental parameters comprehensive monitoring instruments;

3. Built-in output, can be used as multi-parameter sensor, and monitoring system networking, on-line monitoring;

4. Basic error and alarm error

Carbon monoxide (× 10-6CO) 0 ~ 20 ± 2 × 10-6CO

 20 to 100 ± 4 × 10 -6 CO

 100 to 500 ± 5% of the true value

 500 to 1000 ± 6% of the true value

Carbon dioxide (% CO2) 0.00 to 0.50 0.1% CO2

 0.50 to 5.00 ± (0.05 + 5% of the true value)

Methane (% CH4) 0.00 to 1.00 0.10% CH4

 1.00 to 3.00 ± 10% of the true value

 3.00 to 4.00 ± 0.30% CH4

Oxygen (% O2) 0.0 to 5.0% O2 ± 0.5% O2

 5.0 to 25.0% O2 ± 3% FS

Hydrogen sulfide (10-6H2S) 0-49 ± 3 10-6H2S

 50 to 100 ± 10% of the true value

Temperature (° C) 0.0 to 100.0 ° C ± 2.5% (F.S)

Humidity (% RH) 0.0 to 98.0% RH ± 8% RH

Differential pressure (Pa) 0.0 ~ 100.0kPa ± 2% FS

Second, the characteristics

1. Indication mode: display real-time data and system status, sound and light alarm and undervoltage indication;

2. The sound intensity of the instrument should not be less than 75dB (A) at the distance of 1m from the information receiver; the visibility of the light signal in the dark should not be less than 20m;