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CJZ7 Comprehensive parameter measuring instrument for methane drainage

CJZ7 Comprehensive parameter measuring instrument for methane drainage

Product introduction

CJZ7 Comprehensive parameter measuring instrument for methane drainage is a portable instrument especially dedicated to simultaneously measurement of 7 parameters of borehole methane including concentration, flow, negative pressure, temperature and CO for coal mine underground, also can be used for the determination of methane drainage integrated parameters in the main and branch drainage pipes. This measuring instrument is equipped with dedicated computer data management software which is capable of transferring measuring data to computer for data management and analysis by wireless mode, providing a wealth of graph and statement functions.

Performance characteristics

Adoption of the patented technology of simultaneously measurement of 7 parameters including methane concentration, flow, negative pressure, temperature and O2 within 3 minutes

The adoption of the patented technology of gas internal cyclic sampling can truly reflect the actual situation within the gas drainage pipe with the characteristic of quick measuring speed.

The adoption of high-pure light source modulation technology with an excellent monochromaticity can accurately detect true content of the measured gas without the interference from other gas component and moisture.

After tens of thousands of times of verification in practice, the measuring cavity applied by the instrument is with excellent abilities of water-proof, anti-dust and self-cleaning function and capable enough to resist the impact of coal slime from methane drainage holes with automatic water drainage function which ensures the instrument sensor element in good normally working status form any damage under harsh conditions

Totally new power supply circuit with low power consumption and high safety and explosion-proof certification of intrinsically safe type ia grade for mine use

Technical parameters

Measuring range and allowable error

Flow(m3/min)

   DN25:(0~0.400)m3/min

   DN50:(0~1.600)m3/min

   DN300:(0~100.00)m3/min

Methane(%CH4)

   (0.00~1.00)

   >(1.00~100.0)

Absolute pressure(kPa)

   (10.0~100.0)

   >(100.0~200.0)

Temperature(℃)

   -10.0~+50.0

CO2 (%CO2)

   (0.00~0.50)

   (0.50~5.00)

CO(10-6CO)

O2(%O2)

Explosion-proof type: Intrinsically safe type for mine use (explosion-proof mark: Exia I Ma)