Multi Functional SF6 And Oxygen Gas Detector For High Voltage Substation

Product Specification

Portable Handheld Infrared SF6 Gas Analyzer & Leak Detector | 220V, 1-Year Warranty

Product Description

The MY-303 SF6 Intelligent Leak Detector is a professional portable testing instrument dedicated to sulfur hexafluoride (SF₆) gas leak localization and concentration monitoring. Built with high-sensitivity sensing technology, it achieves ppm-level detection accuracy, capable of identifying trace SF₆ leaks that cannot be detected by traditional bubble testing, and accurately locates leak points in a short time.
This device adopts an industrial-grade anti-drop housing and a handheld flexible probe design, adapting to complex on-site working conditions such as substations, outdoor power facilities and electrical production workshops. It is widely used in daily inspection, installation commissioning and fault maintenance of high-voltage electrical equipment, helping power operators and electrical manufacturers improve inspection efficiency, reduce gas loss, and ensure the safe and stable operation of SF₆-insulated equipment.
Product Alias

Portable SF6 Gas Leak Detector
Intelligent Sulfur Hexafluoride Leak Tester
Handheld SF6 Leakage Detection Device
GIS SF6 Gas Leak Analyzer
High Precision SF6 Gas Sniffer
MY-303 SF6 Gas Leakage Tester
Features

PPM-Level High Detection Accuracy
Adopts advanced sensing technology with a detection limit down to ppm level, effectively captures micro leaks at an early stage, and avoids equipment insulation failure and gas emission caused by unnoticed leakage.
Real-Time Display & Smart Alarm
Equipped with a high-definition LCD screen to display real-time SF₆ concentration, leakage grade and equipment status dynamically; supports adjustable audible and visual alarm thresholds, and triggers an immediate alert when leakage exceeds the preset value.
Industrial-Grade Rugged & Portable Design
Reinforced rubber-protected housing features excellent drop resistance and wear resistance; the lightweight handheld body is suitable for mobile inspection in various industrial and field scenarios.
Flexible Probe for Full-Coverage Detection
Matched with an extended flexible cable and a metal handheld probe, it can reach narrow gaps, valve joints, internal positions of switchgear and other hidden areas to achieve dead-angle-free leak detection.
Long Battery Life for Field Operation
Built-in large-capacity rechargeable lithium battery supports long-time continuous work without external power supply, fully meeting the demand of all-day on-site inspection and emergency troubleshooting.
Convenient Data Management
Supports data storage and historical record query, which facilitates operators to sort out inspection logs, standardize maintenance workflows, and realize traceable detection data.
Product Parameters

Application Scenarios
 





(Scenarios covered in the images:substation inspection, equipment acceptance, factory airtightness testing, distribution maintenance and post-overhaul recheck.)
Frequently Asked Questions from Customers on VariableFrequency Series
Resonance  AC Withstand Voltage Test Device

Question 1: Test voltage cannot reach the rated value
Customer: When testing long power cables, the output voltage only reaches about 70% of the target and stops rising, with no fault alarm triggered. What causes this?
Manufacturer: This is usually caused by mismatched load capacity or insufficient power supply. Please troubleshoot step by step: First, check if the reactor series-parallel connection matches the test object’s capacitance; add parallel reactors for large-capacity cables to reduce equivalent impedance. Second, confirm the on-site input voltage is stable and not 10% below the rated value, and avoid sharing the power line with other high-power equipment. Third, check if the test object surface is damp with leakage traces, which will increase active power loss. If the problem remains, raise the initial tuning voltage properly and retest.
Question 2: Over-voltage protection trips suddenly during test
Customer: During GIS withstand voltage testing, the device triggers over-voltage protection and trips right away when voltage approaches the set value, stopping the test. How to fix this?
Manufacturer: Please check in order: First, confirm if the over-voltage protection threshold is set too low, and adjust it to 1.1–1.2 times the standard test voltage as required. Second, check if the voltage divider signal cable is loose or affected by electromagnetic interference, which leads to false voltage sampling. Third, listen for discharge sounds inside the test object, which may mean partial breakdown. If the equipment itself is faulty, stop the test immediately and contact us; do not disassemble the device privately.
Question 3: Control box has no display after power-on
Customer: After long-distance transportation to the site, the control box has no screen display and no indicator light is on when powered on. What should we check first?
Manufacturer: Please inspect as follows: First, confirm the on-site power socket works normally and the power cord is connected reliably. Second, check if the control box power fuse is blown due to transportation vibration; replace it with a fuse of the same specification if needed. Third, check if the power switch is damaged by impact. Do not disassemble the internal circuit board without permission. If the fault cannot be cleared, contact our after-sales team for remote guidance or on-site maintenance.
Question 4: Distorted output voltage waveform
Customer: We found obvious distortion in the output voltage waveform during the test, and the harmonic content does not meet the standard. How to solve this?
Manufacturer: This problem is usually related to on-site power supply and wiring interference. First, use an independent dedicated power supply for the test, and avoid sharing the circuit with frequency converters or welding machines. Second, ensure all test equipment uses single-point grounding to avoid circulating current interference from multi-point grounding. Third, adjust the resonance frequency properly to avoid the power grid harmonic band. Also, keep reactors and voltage dividers away from large metal objects to reduce stray interference.
Shipping scenario
Scene (One)

Scene (Two)

Attachment Directory

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