Product Description 
 WGCB gas drainage pipeline parameter analyzer is a portable mining intrinsically safe intelligent measuring instruments, with the orifice, the average rate or pitot tube, able to determine the differential pressure of each measuring point of the gas drainage pipe, drainage vacuum , methane concentration, pipe temperature, mixed flow drainage gas and pure methane flow. 
 Performance characteristics of 
 The instrument has a strong, light weight, easy to operate, fast and accurate measurement and other characteristics; instruments and power-down automatically to protect data and power supply under-voltage automatic power-off function; measurable data of 128 points; the determination of all the data can be stored , display, print. 
 Technical parameters 

 Directory measuring range indexing error 
 Differential pressure 0 to 5kPa 1Pa ± 1.5% of the FS 
 Relative negative pressure 0 ~ 100kPa 100Pa ± 1.5% FS 
 ± 10% of the methane concentration of 10 to 100 percent to 0.1 percent of true value 
 Temperature 0 ~ 50 ℃ 0.1 ℃ ± 1.5% F. 
 Working power GNYG1.8Ah × 7 Ni-Cd battery pack or external 12VDC power supply 
 Working current <200mA 
 Storage capacity capable of measuring store up to 128 measuring points data 
 Working time ≥ 8h 
 Dimensions 425 (L) x 260 (width) x 180 (H) mm 
 Weight <3.5kg