Shenzhen Zhongnuo Testing Technology Co., Ltd. specializes in the calibration, verification, and measurement services of gas alarms, flammable gas detectors, toxic and harmful gas detectors, and other equipment for various locations. We hold qualifications to serve nationwide, addressing customers' electrical safety and explosion-proof fire prevention issues, and contributing to safe production.
Standard for verification and calibration of combustible and toxic gas detectors:
GB/T50493-2019 "Design Standard for Detection and Alarm of Combustible Gases and Toxic Gases in Petroleum and Chemical Industry"
GB12358-2006 General Technical Requirements for Environmental Gas Detection and Alarm Instruments in Workplace
JJG693-2011 "Regulation for Calibration of Combustible Gas Detectors"

Measurement Equipment Control
The instrument control includes calibration, follow-up calibration, and in-service inspection.

What factors affect the calibration cycle of flammable gas detectors?
Manufacturer Requirements: Different manufacturers may have varying inspection cycle requirements for flammable gas detectors. Therefore, when purchasing equipment, it's crucial to carefully review the product manual to understand the specific requirements of the manufacturer.
Equipment Usage Environment: The operating environment of the alarm directly impacts its inspection cycle. If the equipment is frequently exposed to high concentrations of harmful gases, high humidity, or extreme temperatures (either high or low), its inspection cycle may be accordingly shortened.
‌Equipment Maintenance Status: The maintenance condition of the equipment is also a significant factor affecting the inspection cycle. If the equipment faces issues such as battery depletion and sensor aging over a long period, the inspection cycle will correspondingly shorten.

Gas alarm regular inspection content
Installation spacing of testing (probe) points
2. Installation Height of the Detector
3. Indicated Error (Concentration)
Repetitive (Concentration)
5. Alarm Error (Concentration)
6. Response Time (Seconds)
Shenzhen Zhongnuo Testing Technology Co., Ltd. is a third-party service provider specializing in electrical safety, electrical explosion prevention, gas alarm systems, and toxic/hazardous gas detection instruments for regular verification, measurement, and calibration. We possess the necessary qualifications to assist clients in solving fire and explosion prevention issues.