Shenzhen Zhongnuo Testing Technology Co., Ltd. specializes in calibration, certification, and metrological services for gas detectors, flammable gas detectors, toxic gas detectors, and other equipment for various venues. We serve nationwide, addressing clients' electrical safety and explosion-proof fire prevention needs, and contributing to safe production.
Gas Alarm Detector Regular Inspection Content
Installation spacing of inspection (probe) points
2. Installation Height of the Detector
3. Indicated Error (Concentration)
Repetitive (Concentration)
5. Alarm Error (Concentration)
6. Response Time (seconds)

Power-on Inspection
The instrument should operate normally after being powered on, with the display section being clear and complete. Check the alarm function and alarm trigger values.
Alarm function and alarm action value check
The instrument's acoustic and visual alarms should function normally. Insulation resistance
Insulation resistance for equipment using AC power should not be less than 20MΩ.

Regulatory and Methodical Regular Inspection for Combustible Gas Detectors
Annually, we conduct annual inspections of the sensors on commercial and industrial alarm systems, primarily checking for the accuracy, repeatability, drift, and response time of the alarms to ensure they meet standards. Additionally, we verify the suitability of the alarm installation location and whether it is affected by interference from other equipment.

How often should various gas detectors be calibrated and tested?
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.
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 for regular inspections, metrological services, and calibrations. We hold the necessary qualifications to address fire and explosion prevention issues for our clients.