Measuring range of the portable gas detector
Portable gas detection technology can be used for harmful gas detection, organic VOC gas detection, combustible gas detection, and single gas detection. Accurate warning of hidden danger detection technology is developing with each passing day, and its application in the inspection and elimination of accident precursors is becoming more and more extensive. Its development direction is miniaturization and automation, in order to achieve long-term monitoring.
Portable gas detectors are widely used in industrial safety monitoring, indoor air quality detection, hazardous substance detection, and environmental protection monitoring. Targeting the key links in the process of disaster breeding, occurrence, and development and destroying its chain development chain is an important part of the safety accident prevention and control technical system.
Pay attention to the measuring range of the portable gas detector used:
Any gas detector has a fixed detection range, and measurement can only be completed within this range, otherwise the measured results will be far lower than the value in your environment. In addition, measuring outside the range for a long time will cause damage to the sensor, so that correct results cannot be obtained within the measurement range later.
Pay attention to the service life of the sensor in the gas detector used:
Gas detectors have a limited service life, and portable gas detectors are no exception. Even if they are not used frequently, they will still experience aging. Generally speaking, among portable gas detectors, the photoionization detector has the longest lifespan, which is about four years; the LEL sensor has the second longest lifespan, which can be used for more than three years; the electrochemical specific gas sensor has a relatively short lifespan. , usually one to two years; the oxygen sensor can only be used for about one year.
Therefore, be sure to read the instructions before use and use the sensor within its validity period. If it is found to be expired, it needs to be replaced immediately.
The detector needs to be calibrated and tested frequently:
Portable gas detectors generally use a relative comparison method for measurement. The measurement method is as follows:
1. First calibrate the instrument with a standard concentration of gas and a zero gas, and obtain the standard curve and store it in the instrument;
2. Compare the electrical signal of the standard concentration with the electrical signal generated by the gas concentration to be measured, and obtain the accurate gas concentration value after calculation.
