Multi-sensor detector can be used for coal, mining operations or other work environment to ensure that personnel from lack of oxygen (O2) and peroxide, dangerous levels of gas (methane CH4), toxic gas carbon monoxide (CO), hydrogen sulfide (H2S) in hazards. The instrument has been China's coal safety signs (MA). 

 BR01-CZ (M40-M) together with the strong shock, shock, fire protection, in harsh environments to provide ultra-high performance and durability, from radio frequency and electromagnetic interference. The four-button interface for simple, sensitive operation and calibration, 5 seconds "delay" function to prevent accidental shutdown. Other standard features include: vibration and sound and light alarm devices, 50 hours of data recording (black box) performance, lithium-ion rechargeable battery, peak / hold readings, large LCD display, special protective holster. Compact integrated pump (optional) can be realized within 15 meters of remote sampling test. BR01-CZ (M40-M) to enjoy the one-year warranty. 


 Housing: 
 Rugged impact-resistant composite materials - radio frequency interference (RFI), electromagnetic interference (EMI) function has been tested and approved 

 Size: 
 10.9cm x 6.22cm x 3.48cm 

 Weight: 
 244 g; 326 g (with pump) 

 Sensor: 
 M40? M are 2, 3 or 4 gas configuration options, including oxygen, sulfide 
 Hydrogen, carbon monoxide and methane. 

 Range: Gas Range Accuracy symbol 
 Carbon monoxide 
 CO 
 0-999ppm; 
 0-1999ppm 
 1 ppm 

 Hydrogen sulfide 
 H2S 
 0-500ppm 
 1 ppm 

 Oxygen 
 O2 
 Content of 0-30% 
 0.1% 

 Methane 
 CH4 
 Content of 0-5% 
 0.1% 

 M40? M with over-range protection 


 Power: 
 Rechargeable lithium-ion battery 

 Running time: 
 18 hour - instrument (non-alarm) 
 12 hour - instrument with pump (non-alarm) 

 Display: 
 Large-screen LCD display provides simultaneous and continuous reading of all four gases. 
 Large, high-contrast characters, graphic icons and unique amber backlight can dim provide clear display visibility. 

 Warning devices: 
 Vibrating alarm, 90 dB audible and ultra-bright LED visual alarm. 
 High / low alarm levels, short-term exposure limit (STEL), time-weighted average (TWA) alarm and low battery alarm. 
 And BR01-CZ (M40-M) pump (optional) traffic is also offered in conjunction with an alarm indicator. 

 Data records: 
 Can record up to 50 hours of data 
 Temperature range: 
 -20o to 50oC 
 Humidity: 
 15 至 95% RH (normal under), 0 to 99% RH (intermittent) (non-condensing) 
 Protection: IP65 
 Certification: 
 China Coal Ann (MA), measurement (CMC) and explosion-proof certification