Toxic gases are a major threat to the health of workers in the industrial environment, so it is very important for the Tori Yingneng gas detector to correctly set the alarm value of the toxic gas alarm. This is not only related to the safety of workers, but also an important guarantee for the compliance operation of enterprises.
The setting of alarm values is not arbitrary, but should be carried out in accordance with relevant regulations and standards. In China, the main reference is "GBT 50493-2019 Petrochemical Combustible Gas and Toxic Gas Detection and Alarm Design Standard" and "GBZ 2.".1-2019 Occupational Exposure Limits for Workplace Hazards".
First, we need to understand what occupational exposure limits are. This is an important reference indicator that represents the permissible level of exposure to a harmful factor that workers are repeatedly exposed to over a long period of time in their occupational activities without causing most adverse health effects. This limit is different for different toxic gases, and we should give priority to the maximum allowable concentration when setting the alarm value.
In the case of sulphur dioxide, for example, the occupational exposure limit is 5 mg m. Based on this value and the above criteria, we can deduce the primary and secondary alarm values of the sulphur dioxide alarm. The first-level alarm value should be less than or equal to 5 mg m, and the second level alarm value should be less than or equal to 10 mg m. If converted to ppm units, they are 175ppm and 35ppm。
In practice, when the existing detector measurement range does not meet the requirements, we can also refer to the Immediate Threat to Life and Health Concentration (IDLH) to set the alarm value. Often, however, it is sufficient to set occupational exposure limits (OELs).
In conclusion, correctly setting the alarm value of a toxic gas alarm is a crucial step in ensuring workplace safety. We should strictly follow the relevant standards and regulations to ensure the health and safety of workers.