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 qualifications to serve nationwide, providing solutions for electrical safety and explosion-proof fire prevention issues, and contributing to safe production.
How often should various gas detectors be periodically calibrated and tested?
Instrument recalibration is typically every 1 year, determined by the submitting unit based on actual usage. During the re-calibration process, if there are doubts about the instrument's test data, or if the main components of the instrument are replaced, as well as after repairs, a re-calibration is required.

Gas Alarm Detector Regular Inspection Content
Installation spacing of inspection (testing) points
2. Installation Height of the Detector
3. Indicating Error (Concentration)
4. Repeatability (Concentration)
5. Alarm Error (Concentration)
6. Response Time (seconds)

Instrument Calibration Control
Instrument control includes calibration, follow-up calibration, and in-service inspection.

The principle of instrument detection mainly includes catalytic combustion, infrared absorption, and thermal conductivity types. Sampling methods include diffusion and aspiration. The instrument is mainly composed of detection elements, amplification circuits, alarm systems, and displays, used for monitoring the concentration of combustible gases in the environment.
Shenzhen ZhongNuo Testing Technology Co., Ltd. is an independent third-party institution specializing in electrical safety, electrical explosion-proof, gas alarm, and toxic gas detection equipment calibration, regular inspection, and metrological services. We provide资质 to help clients address fire and explosion prevention issues.