Shenzhen ZhongNuo Testing Technology Co., Ltd. specializes in the certification, calibration, and metrological services for gas alarms, combustible gas detectors, and toxic/hazardous gas detectors for various venues. With qualifications to serve nationwide, we address a range of electrical safety and explosion-proof fire prevention issues for clients, contributing to safe production and operation.
What factors can affect the calibration cycle of a combustible gas detector alarm?
Manufacturer Requirements: Different manufacturers may have varying inspection cycle requirements for their flammable gas detectors. Therefore, when purchasing equipment, carefully review the product manual to understand the specific requirements of the manufacturer.
Equipment Operating Environment: The operating environment of the alarm directly affects its inspection cycle. If the equipment is frequently exposed to high concentrations of harmful gases, high or low humidity, or high or low temperatures, its inspection cycle may be shortened accordingly.
‌Equipment Maintenance Status: The condition of equipment maintenance is also a significant factor affecting the inspection cycle. If the equipment is frequently experiencing issues like battery depletion or sensor aging, the inspection cycle will accordingly be shortened.

Flammable and toxic gas alarm detectors verification and calibration according to standards:
GB/T50493-2019 "Design Standard for Detection and Alarm Systems of Combustible and Toxic Gases in Petroleum and Chemical Industries"
GB12358-2006 General Technical Requirements for Environmental Gas Detection and Alarm Instruments in Workplace
JJG693-2011 "Code of Calibration for Flammable Gas Detectors"

The calibration cycle for flammable gas detectors is typically once a year.
According to the standard JJG 693-2011 "Flammable Gas Detectors," the calibration period for flammable gas alarms typically does not exceed 1 year. This means that, under normal circumstances, a comprehensive calibration and test of the flammable gas alarm is required annually to ensure its performance meets relevant requirements.

Which gas detectors require regular calibration and verification?
Fixed-install, handheld, and portable gas alarms, gas detectors, toxic and harmful gas detectors/alarm systems, flammable gas detectors/alarm systems, gas analyzers, etc.
Shenzhen Zhongnuo Testing Technology Co., Ltd. is a third-party institution specializing in electrical safety, electrical explosion-proofing, gas detectors, and toxic and harmful gas alarm instruments for regular verification, metrological testing, and calibration services. We are licensed to help clients address fire and explosion prevention issues.