Principles for selecting toxic and harmful gas detectors
1. Select appropriate toxic and harmful gas detectors based on the monitoring and alarm requirements of the workplace
The detection range, detection box alarm accuracy, selectivity, and service life of the toxic and harmful gas detector should meet the alarm requirements. The detector should have the ability to resist poisoning and damage
3. Select appropriate toxic and harmful gas detectors based on the environment and working conditions of the toxic and harmful gas release sources and release points
4. Choose toxic and harmful gas detectors with different structural forms according to the workers' work activities
4.1 Fixed toxic and harmful gas detectors should be installed in workplaces where workers frequently engage
4.2 Mobile toxic and harmful gas detection devices should be installed in workplaces where workers engage in short-term activities involving toxic and harmful gases
4.3 It is not convenient to install fixed or mobile toxic and harmful gas detectors, or in toxic and harmful workplaces where workers engage in temporary activities or in emergency situations where accidents occur, portable toxic and harmful gas detectors should be equipped.
Function and quality requirements for the selection of toxic and harmful gas detectors
1. The detector should have selectivity in detecting toxic and harmful gases, be able to resist interference from non detecting gases, and provide accurate indications and alarms
2. The detector can cover a certain monitoring area, and effectively detect and alarm the toxic and harmful gases released in this area
3. The detector should have automatic compensation for changes in environmental temperature and humidity, protective measures against mechanical damage, rain, wind and sand, and electromagnetic interference to avoid signal distortion.
4. The detector should have reliability assurance functions such as zero adjustment, calibration, and fault alarm
5. The alarm mode of the detector can enable workers to respond in a timely manner, and if necessary, it can be linked to the control device
6. The detector shall comply with the requirements of GB12358: Instruments used in explosion-proof places shall comply with the requirements of GB50058 and GB3836.1, and other components and transmission wires shall comply with the requirements of their relevant standards and specifications
Within the specified calibration time interval, all technical indicators of the detector should meet the requirements.
