详情描述

Shenzhen Zhongnuo Testing Technology Co., Ltd. specializes in the calibration, certification, and measurement services for gas alarms, combustible gas detectors, toxic and harmful gas detectors, and other equipment in various locations. We provide nationwide services, addressing electrical safety and explosion-proof fire prevention issues for clients, and promoting safe production.
Regular Testing Content and Methods for Flammable Gas Detectors and Alarms
Annually, we conduct annual inspections of industrial and commercial alarm sensor probes, primarily checking for the accuracy of the alarm indicators, repeatability, drift, and response time to ensure they meet standards. Additionally, we verify the appropriateness of the alarm's installation location and check for any interference from other equipment.
嘉兴气体报警器检测怎么办理
Calibration Method
Appearance and structure
Inspect visually and by touch according to requirements of 4.1
Branding and Logos
Conform to the requirements of Section 4.2 by visual inspection.
Power-on inspection
Inspect visually and by touch, in accordance with the 4.3 requirements, to check the 5.3.4 alarm function and alarm action values.
Introduce a standard gas substance with a concentration exceeding the alarm setpoint, causing the instrument to trigger an alarm. Observe if the instrument's audible and visual alarms function normally and record the readings at the time of the alarm. Repeat the measurement three times, with the arithmetic mean of the three readings being the instrument's alarm action value.
嘉兴气体报警器检测怎么办理
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.
嘉兴气体报警器检测怎么办理
GAS ALARM METER CALIBRATION CONDITIONS AND REQUIREMENTS
Environmental Conditions
Ambient Temperature: 0~40℃.
2. Relative Humidity: ≤85%
3. The working environment should not affect the normal operation of the instrument with electromagnetic fields and interfering gases.
Calibration Tools and Instruments
1) Certified Reference Materials for Gases
The relative expanded uncertainty of the gas standard material does not exceed 2% (k=2).
2) Standard Gas Dilution Device: Dilution error of 1%.
3) Stopwatch: Graduation not greater than 0.1s.
4) Flow Control: Flow range not less than 500 mL/min, flow grade not less than level 4.
5) Zero Point Gas: Purified compressed air.
6) Pressure Relief Valve: A pressure relief valve that is compatible with the calibrated cylinder.
7) Gas Pipeline: Tubing made of materials such as polytetrafluoroethylene or stainless steel, which do not affect the concentration of the gas being measured.
Shenzhen Zhongnuo Testing Technology Co., Ltd. is an independent third-party institution specializing in electrical safety, electrical explosion prevention, gas alarms, and toxic/hazardous gas detection equipment for regular inspections, metrological measurements, and calibrations. We hold the necessary qualifications to provide solutions for fire and explosion prevention issues for our clients.