Specifications
| Detect gas | Oxygen (O2), hydrogen sulfide (H2S), methane (CH4), carbon monoxide (CO) |
| Measurement range | 0-30%VOL，0-100PPM，0-100%LEL，0-1000PPM |
| resolution | 0.01%VOL，0.01PPM,0.1%LEL,1PPM |
| Temperature, humidity | Optional accessories, Temperature detection range: -40~ 120 ℃, Humidity detection range: 0-100% RH |
| Detection method | Flow velocity: 500-1000mL/min, can work in a micro negative pressure environment |
| detection accuracy | ≤±3% |
| Response Time | ≤ 30 seconds (T90) |
| recovery time | ≤ 20 seconds |
| detection mode | Real-time detection, timing detection can be set |
| Linearity | ≤±1% |
| Zero drift | ≤ +/- 1% (F. S/year) |
| repeatability | ≤±1% |
| Alarm mode | High and low alarm adjustable |
| storage mode | Real-time storage, timed storage can be set; 100000 groups of data can be stored, and historical data can be viewed on the screen |
| Explosion-proof sign | ExdII CT4 (intrinsically safe) |
| Protection Rating | IP66 |
| Power Supply | 4000mA rechargeable polymer battery |
| Size weight | 180 * 85 * 60 mm (L × W × H), 500g (Net weight) |
| shell material | ABS+PC |
| Operating temperature | -20 ～ 50℃ |
| Operating humidity | ≤ 95% RH, non-condensing |
| Operating Pressure | -30Kpa ～ 100Kpa |
| standard accessories | Dust Filter, Instrument Aluminum Case, Manual, Certificate of Conformity, USB Charger + Data Cable, Calibration Cover |
Packing list
After-sales instructions
None
[Note] For after-sales services outside the Chinese mainland, if the instrument requires repair, the shipping and possible associated taxes shall be borne by the sender. Generation address of the manual: http://en.nbchao.com/p/50684/Specification.html , which is only used by users who purchase commodities from the NBCHAO.