Shenzhen ZhongNuo Testing Technology Co., Ltd. specializes in the certification, calibration, and metrological services of gas alarms, flammable gas detectors, toxic and harmful gas detectors, and other equipment for various venues. We hold the necessary qualifications to serve nationwide, addressing electrical safety and explosion-proof fire prevention issues for clients, and promoting safe production.
What are the contents included in the calibration report for flammable gas detectors?
The verification results should be reflected in the verification certificate or report, and the verification proof or report must include the following information.
① Calibration Certificate or Calibration Report
② Laboratory Name and Address
③ Calibration Location (if not calibrated in the laboratory)
④ Standby letter of credit or report (e.g., numbered), with indication of each page and page number;
Please provide the company name and address for shipping.
⑥ Describe and clearly identify the target school.
Calibration Date and Receipt Date
⑧ Technical specifications for calibration foundation, including names and codes;
Description of traceability and effectiveness of the measurement standards used in our calibration.
⑩ Description of Calibration Environment
11. Calibration Results and Measurement Uncertainty Statements
12. Signature, title or equivalent mark, and issuance date of the certifier or issuer of the calibration certificate or calibration report
13. Calibration results are only applicable to the calibration object.
14. No part of the certificate or report may be copied without written consent from the laboratory.
Reproofreading interval
Instrument recalibration is typically every 1 year, determined by the sending unit based on actual usage. During the secondary calibration process, if there are any doubts about the instrument's test data, or if the main components of the instrument are replaced, as well as after repairs, a recalibration is required.

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 alarm instruments used in the workplace.
The standard was issued in 1990 and has undergone several revisions.
The new version is GB 12358-2024, which will be officially implemented on June 1, 2025.
This standard applies to the production and use of detection and alarm instruments for flammable gases, toxic and harmful gases, and oxygen in workplace environments.

The calibration cycle for flammable gas detectors is typically once a year.
In accordance with the standard JJG 693-2011 "Flammable Gas Detectors," the calibration cycle for flammable gas detectors typically does not exceed one year. This means that under normal circumstances, a comprehensive calibration and testing of the flammable gas detectors should be conducted annually to ensure their performance meets the relevant requirements.

Regulatory contents and methods for periodic testing of flammable gas detectors
Annually, we conduct annual inspections on the sensors of commercial and industrial alarm systems, primarily checking for measurement errors, repeatability, drift, and response times to ensure they meet standards. Additionally, we verify the suitability of the alarm system's installation location and whether it is subject to interference from other equipment.
Shenzhen Zhongnuo Testing Technology Co., Ltd. is a third-party institution specializing in electrical safety, electrical explosion-proofing, gas alarm systems, and toxic and harmful gas alarm instruments for regular inspections, metrological measurements, and calibration services. We are qualified to address fire and explosion prevention issues for our clients.