Multi-parameter Gas Detector

Model: CD4
Description: CD4 Multi-parameter Gas Detector
MA: MFA150188 (National safety sign for coal mining products)
KA: KFA150017 (National safety sign for mining products)
ExibI : 320150860 (Intrinsic safe and explosion-proof products certificate)
ExiaII: CMExC17.4385

Introduction:
1. Detect the gas concentration of CH4, O2, CO, H2S.
2. 8 digitals micro-controller as control unit, high sensitivity and fast response speed, high precision detecting element.
3. Large LCD screen to ensure high definition display.
4. Detector will cause luminescence and voice alarm if gas concentration is over standard.

Technology parameters:
1. CH4:
Measuring range Error expected
0.00~1.00 ± 0.10
1.00~3.00 Truth value ± 10%
3.00~4.00 ± 0.30
2. O2
Measuring range Error expected
0.0~5.0 ± 0.5
>5.0~30.0 Measuring value ± 3%







3. CO
Measuring range Intrinsic error
Absolute error Relative error
0~20 ± 2 ——
>20~100 ± 4 ——
>100~500 —— Truth value ± 4%
>500~1000 —— Truth value ± 5%
>1000~2000 —— Truth value ± 6%
4. H2S

Measuring range Intrinsic error
0~49 ± 3
50~100 Truth value ± 10%
>100~500 Truth value ± 15%






5. Response time: T8 hours
12. Sensor lifetime: 2 years
13. Levels of protection: IP65
14. Dimension: 68mm×33mm×124mm
15. Weight: 400g