During on-site inspections, O&M personnel often encounter scenarios like these: the SF6 gas compartment pressure gauge reads normal, yet routine leak detection triggers an alarm; or the same gas compartment measured with different instruments yields significantly different results. The choice and use of a quantitative gas leak detector directly affects leak point judgment and maintenance decisions. The JQL-5100 quantitative gas leak detector adopts infrared sensing technology and has been optimized in design for common on-site problems.
Compared with electrochemical leak detectors, the infrared sensor offers better selectivity for SF6 gas, reducing cross-interference from ambient humidity and other gases. Unlike some models that require frequent sensor replacement, the JQL-5100's sensor head filter can be cleaned periodically, lowering maintenance costs. In terms of response speed, the instrument can enter measurement mode after warm-up upon power-on, making it suitable for rapid on-site screening.
When selecting a model, it is recommended to focus on the following indicators: measurement range covering 0–1000 ppm with a resolution of 1 ppm; response time less than 10 seconds; battery voltage indication for better control of on-site working time; and adjustable alarm threshold to suit detection requirements in different scenarios. The JQL-5100 prioritizes practicality in these parameters, meeting the needs of daily inspections and leak point locating.
After power-on, warm up the instrument and observe the battery voltage indication; replace the battery promptly when power is low. Clean the sensor head filter regularly to prevent dust blockage from affecting measurement accuracy. When not in use for an extended period, it is recommended to store the instrument in a dry environment and perform periodic power-on checks as required by the manual.
Suitable for leak detection of SF6 equipment gas compartments in substations, leak point troubleshooting of GIS combined electrical apparatus, and sealing verification after equipment maintenance. For on-site O&M personnel, the JQL-5100 provides a leak detection method with simple operation and readable data, helping to quickly locate problems.
