Introduction to the Measurement Range of Portable Gas Detectors
Portable gas detection technology can be used for harmful gas detection, organic VOC gas detection, combustible gas detection, and single gas detection. The development of accurate warning and hazard detection technology is changing day by day, and its application in accident precursor inspection and elimination is becoming increasingly widespread. Its development direction is miniaturization and automation, with the aim of achieving long-term monitoring.
Portable gas detectors are widely used in industrial safety monitoring, indoor air quality detection, hazardous substance detection, and environmental protection monitoring. Breaking the chain of chain development in the process of disaster incubation, occurrence, and development is an important part of the safety accident prevention and control technology system.
Pay attention to the measurement range of the portable gas detector used:
Any gas detector has a fixed detection range, and measurements can only be completed within that range. Otherwise, the measured results are much lower than the values of your environment. In addition, prolonged measurement beyond the range can cause damage to the sensor, making it impossible to obtain correct results within the measurement range in the later stages.
Pay attention to the service life of the sensors in the gas detector used:
Gas detectors have limitations on their lifespan, and portable gas detectors are no exception. Even if not frequently used, they may still experience aging. In general, among portable gas detectors, photoionization detectors have the longest lifespan of about four years; The service life of LEL sensors is second, and they can be used for more than three years; The lifespan of electrochemical specific gas sensors is relatively short, usually between one to two years; The oxygen sensor can only be used for about a year.
So, before use, it is necessary to read the instructions carefully and use the sensor within its validity period. If it is found to be expired, it needs to be replaced immediately.
The tester needs to be calibrated and tested frequently:
Portable gas detectors generally use a relatively comparative method for measurement, as follows:
1. First, calibrate the instrument with a standard concentration of gas and a zero gas, and store the standard curve 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 calculate the accurate gas concentration value.
