Right answer for this question “Up to end-user demand”. In fact, China portable gas detector also can detect Flammable, Oxygen and Toxic gas in detectable area. But, the detect accuracy should be considering.
China Portable gas detector, advantage/disadvantage
- Very low price, around 1/2 or lower equally model by US, EU, JP
- CO, CQ and Explosion proof certificate.
- Detectable: Flammable, Oxygen and Toxic
- Short lifetime, around 1/2 equally model from US EU, JP
- Do not have Classification certification for Marine use
- Detect result should be considering
- Calibration gas cylinder isn’t popular
- Don’t integrated internal pump. Addition portable pump don’t meet Explosion proof requirement.