Explanation of the type and range of gas detected by the four in one detector
The four in one gas detector can simultaneously detect oxygen, hydrogen sulfide, carbon monoxide, and combustible gases. Hydrogen sulfide and carbon monoxide gases can be matched with other gases according to the detection needs of the site. The gas detector mainly uses gas sensors to detect gases in the environment.
The type and range of gas detected by the four in one detector:
LEL range 0-100% LEL or 0-5% CH4;
O2 range 0-30% Vol;
CO range 0-500/2000ppm;
H2S range: 0-100/500ppm;
Precautions for using a four in one gas detector:
1. Four in one is a personal protective equipment, and the internal sensor range of the instrument is limited. If the measured gas exceeds the range, it is not easy to measure for a long time, otherwise it is highly likely to cause sensor damage.
2. When toxic, harmful, and combustible gases are detected, detailed values will also be displayed after displaying the words "high" or "low". Please read the detailed values. (LOW: low alert, HI: high alert)
3. Portable four in one can receive electromagnetic wave disturbance, and when there is electromagnetic wave disturbance, the measurement value may be inaccurate. When there is electromagnetic wave disturbance, the four in one alarm will be activated, and the electromagnetic wave disturbance will be eliminated before measurement.
4. When using four in one, it is important to pay attention to the battery level and replace it in a timely manner when it is insufficient. Please do not charge the instrument at the testing site to avoid sparks caused by unplugging and plugging the charger, which can cause fire or explosion.
5. Charge in a safe area, replace and charge in a timely manner.
When detecting toxic gases, the four in one gas detector should first pay attention to its inherent problems: based on the chemical stability of toxic gases, adjusting levels and other characteristics at relatively high concentrations. Due to their dependence on the non active pulling force of the airflow, the response time of the samples is generally slower. The calibration of a four in one gas detector is often difficult, which requires the conversion of special accessories and the diffusion of operating modes through flow calibration purposes. Furthermore, the implied diffusion equivalence between flows through monitoring and calibration is not always a good record.
