Toxic gas alarm is a precision instrument used to detect the concentration value of toxic and harmful gases or vapors accumulated by volatile leakage in the ambient air, and timely send out an alarm that exceeds the standard. Due to the drift of the standard control curve of the instrument during use, which reduces the accuracy and validity of the instrument's measurement results, it is necessary to carry out regular metrological verification of the instrument. So, how long should the detection cycle of a toxic gas detector be?
Generally speaking, unless otherwise specified, the detection cycle of toxic gas alarms should be within one year. This is because over the course of a year, the performance of the instrument may change, resulting in inaccurate measurements. In order to ensure the accuracy and validity of the measurement results, regular verification calibration is required. The specific verification cycle should be carried out in accordance with the time specified by the manufacturer. In addition, according to the currently known verification procedures of common toxic and harmful gas detectors, the verification cycle requirements for all toxic and harmful gas detectors are basically as follows: "The verification cycle of the instrument is generally not more than 1 year, if there is doubt about the measurement results of the instrument or the instrument has replaced the main components and repaired should be sent for inspection in time." ”
The following are the verification procedures and verification cycles of some common toxic and harmful gas detectors:
1. Formaldehyde gas detector verification regulations (JJG 1022-2016): the verification cycle is generally not more than 1 year.
2. Verification regulations for carbon monoxide detection alarms (JJG 915-2008): the verification cycle is generally not more than 1 year.
3. Verification regulations for sulfur dioxide gas detectors (JJG 551-2021): the verification cycle is generally not more than 1 year.
4. Verification regulations for hydrogen sulfide gas detectors (JJG 695-2019): the verification cycle is generally not more than 1 year.
5. Verification regulations for ammonia detectors (JJG 1105-2015): the verification cycle is generally not more than 1 year.
6. Calibration specification for chlorine detection and alarm instrument (JJF 1433-2013): the verification cycle is generally not more than 1 year.
7. Calibration specification for benzene gas detection alarm (JJF 1674-2017): The verification period is generally not more than 1 year.
8. **Calibration specification for gas detection alarms (JJF 1888-2020): The verification cycle is generally not more than 1 year.
9. Calibration specification for volatile organic compound photoionization detector (JJF 1172-2007): the verification period is generally not more than 1 year.
Whether it is a portable pump-type toxic and harmful gas detection and alarm instrument or a fixed ** toxic and harmful gas detection and alarm instrument, its detection cycle shall generally not exceed 1 year. Otherwise, if the safety accident is indirectly caused by this, you may bear the corresponding responsibility. In order to ensure safety, it is recommended to choose a gas detection and alarm instrument with the function of automatically reminding the user to verify and measure when it expires. If you need more details, you can consult the staff of Winrun Group.
To sum up, the detection cycle of toxic gas alarm is generally not more than one year. Regular verification and calibration can ensure the accuracy and validity of the measurement results, and avoid misjudgments and safety accidents caused by instrument drift. When selecting and using toxic gas alarms, they should be operated according to the manufacturer's specified time and relevant verification procedures, and timely verification and measurement should be carried out to ensure the safety and health of the working environment.