Shenzhen ZhongNuo Testing Technology Co., Ltd. specializes in the calibration, verification, and measurement services for gas alarms, combustible gas detectors, toxic and harmful gas detectors, and other equipment in various locations. We hold the necessary qualifications to serve nationwide, addressing clients' electrical safety and explosion-proof fire prevention concerns, and contributing to safe production.
Which gas detectors require regular calibration and metrological verification?
All types of fixed, handheld, portable gas detectors, gas alarms, toxic and harmful gas detectors/alarms, flammable gas detectors/alarms, gas analyzers, etc.

How often should various gas detectors be calibrated and checked?
Instrument recalibration is typically every 1 year, determined by the submitting unit based on actual usage. During the secondary calibration process, if there are doubts about the instrument's test data, or if the main components of the instrument are replaced, or if recalibration is required after repairs.

GB 12358-2024 "General Technical Requirements for Environmental Gas Detection and Alarm Instruments in Workplace" is an important standard.
Intended to standardize the performance, functions, and testing methods of environmental gas detection and alarm instruments used in work场所.
The standard was issued in 1990 and has undergone several revisions.
The new version is GB 12358-2024 and will be officially implemented on June 1, 2025.
This standard applies to the production and use of detection and alarm instruments for combustible gases, toxic and harmful gases, and oxygen in work场所.

What factors can affect the calibration cycle of a flammable 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 exposed to high concentrations of harmful gases, high humidity, or extreme temperatures (either high or low) for extended periods, 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 consistently facing issues like battery depletion and sensor aging, the inspection cycle will accordingly be shortened.
Shenzhen ZhongNuo Testing Technology Co., Ltd. is an independent third-party organization specializing in electrical safety, electrical explosion-proofing, gas detectors, and toxic/hazardous gas alarm instruments. We provide regular verification, measurement, and calibration services, as well as certifications to help clients address fire and explosion prevention issues.