Shenzhen ZhongNuo Testing Technology Co., Ltd. specializes in the calibration, verification, and metrological services for gas alarms, flammable gas detectors, toxic and harmful gas detectors, and other equipment, serving various locations across the country. We provide solutions for electrical safety and explosion-proof fire prevention issues, contributing to safe production.
Gas Alarm Detector Regular Inspection Content
Installation spacing of inspection points
2. Installation Height of the Detector
3. Indication Error (Concentration)
4. Repeatability (Concentration)
5. Alarm Error (Concentration)
6. Response Time (Seconds)

Power-on inspection
After powering on the instrument, it should operate normally with clear and complete display. Check the alarm function and the alarm action values.
Alarm function and alarm action value verification
The instrument's sound and light alarm should be functioning normally. Insulation resistance
Insulation resistance for instruments using AC power should be no less than 20MΩ.

Which gas detectors require regular calibration and metrological verification?
All types of fixed, handheld, and portable gas detectors, gas alarm instruments, toxic and harmful gas detectors/alarm systems, flammable gas detectors/alarm systems, gas analyzers, etc.

The calibration cycle for flammable gas detectors is typically once a year.
In accordance with the standard JJG 693-2011 "Flammable Gas Detectors," the calibration period for flammable gas detectors generally does not exceed one year. This means that under normal circumstances, a comprehensive calibration and testing of the flammable gas detectors should be conducted annually to ensure their performance meets the relevant requirements.
Shenzhen Zhongnuo Testing Technology Co., Ltd. is a third-party institution specializing in electrical safety, electrical explosion-proofing, gas detectors, and toxic gas alarm instruments, providing regular calibration, measurement, and certification services. We are qualified to address fire and explosion prevention issues for our clients.