What are the measurement methods of the four-in-one gas detector?
There are three main measurement methods of the four-in-one gas detector:
1. Direct measurement
A single measurement with the sensor cartridge inserted into the host unit.
The host unit is inserted into the sensor box of the 4-in-1 gas detector, and a 30-minute or 1-hour detection is performed in the direct measurement mode.
Features: Easy to operate, but only one measurement point can be carried out for each detection, which takes a long time.
2. Sampling measurement
The sensor box of the four-in-one gas detector is used alone as a passive sampler, and the detection result is read out by the host unit.
The sensor itself can be used as a passive sampler. No need for fans and pumps. The change in relative colorimetric absorbance that occurs in the sensor is read by the host unit before and after sampling and converted into formaldehyde concentration.
Features: It can carry out multi-point detection at the same time, with high efficiency. However, multiple sensor boxes must be used at the same time.
3. Continuous measurement
The host unit is inserted into the sensor box of the 4-in-1 gas detector to continuously monitor the gas concentration for a long time.
The host unit reads and stores the change in absorbance every 30 minutes, continuously, or until the sensor reaches saturation.
Features: Long-term continuous monitoring, multiple continuous monitoring values can be obtained at the same measuring point, and the change of gas concentration within a time period can be obtained. In order to carry out multi-point continuous monitoring at the same time, multiple hosts and sensor boxes must be equipped at the same time.
To sum up, it is the measurement method of the four-in-one gas detector. By using the 4-in-1 gas detector, we can protect our own personal safety, thereby helping to prevent accidents and exposure to unsafe areas, allowing managers to discover potential safety hazards in time to ensure production safety.
