Sulfur Hexafluoride Tester | 3-in-1 SF6 Gas Analyzer | XHJL309
Integrating a micro-moisture meter, a purity tester and a decomposition product analyzer into a single unit, this device combines the functions that previously required three separate instruments. A single on-site measurement enables the testing of three indicators, which significantly reduces gas consumption for the equipment, cutting gas usage by two-thirds per measurement and boosting work efficiency substantially.
Sulfur hexafluoride (SF6) is the preferred insulating and arc-extinguishing medium for high-voltage switchgear, circuit breakers, gas-insulated switchgear and gas-insulated lines. The quality of the gas determines the reliability of the equipment: excessive moisture causes condensation and flashover, low purity weakens insulation, and decomposition products reveal internal discharge and arcing activity. This tester delivers all three answers in one connection.
With the dew point measured in 5 minutes and the purity and decomposition products measured in 2 minutes, the instrument keeps testing time to a minimum. The original German imported self-locking connectors guarantee a leak-free gas path, and the built-in 4Ah rechargeable lithium battery provides 10 hours of continuous operation for full-day inspection programs in industrial plants and factories.
Applications & Target Audience: Designed for pharmaceutical and biopharmaceutical plants maintaining SF6 switchgear in GMP cleanroom power distribution, new energy battery manufacturing plants testing high-voltage switchgear of lithium and energy storage battery factories, hydrogen energy and green hydrogen plants verifying SF6 equipment in electrolysis power distribution, new material and carbon fiber factories, automobile manufacturing plants maintaining 110kV and 10kV substation SF6 equipment, and rolling stock manufacturing plants testing substation SF6 switchgear.
Key Specifications
| Parameter |
Specification |
| Purity Measurement |
0% ~ 100%, accuracy ±0.5% |
| Dew Point Range |
-80 °C ~ +20 °C, accuracy ±0.5 °C (-80 °C ~ -60 °C) |
| Dew Point Response |
63% in 10 seconds, 90% in 240 seconds / 63% in 5 seconds, 90% in 45 seconds |
| H2S Measurement |
0 ~ 200 ppm, accuracy ±0.5%, resolution 0.1 ppm |
| SO2 Measurement |
0 ~ 200 ppm, accuracy ±0.5%, resolution 0.1 ppm |
| CO Measurement |
0 ~ 1000 ppm, accuracy ±0.5%, resolution 1 ppm |
| Test Speed |
Dew point in 5 minutes; purity and decomposition products in 2 minutes |
| Data Storage |
200 sets of test data |
| Display |
Large screen with dew point measurement curve |
| Connectors |
Original German imported self-locking connectors, no gas leakage |
| Built-in Power Supply |
4Ah rechargeable lithium battery, 10 hours continuous operation |
| Ambient Temperature |
-40 °C ~ +60 °C |
| Ambient Humidity |
0 ~ 100% RH |
Product Features
One unit integrates micro-moisture meter, purity tester and decomposition product analyzer
Fast and gas-saving: dew point in 5 minutes, purity and decomposition products in 2 minutes, two-thirds gas saving per measurement
Original German imported self-locking connectors ensure no gas leakage
Can store 200 sets of test data for equipment history tracking
Large screen displays the dew point measurement process as a curve
Built-in 4Ah rechargeable lithium battery, 10 hours continuous operation
The Complete SF6 Maintenance Cycle
SF6 equipment passes through six stages in its service life. The tester supports the gas quality verification required at every stage, from first filling to final decommissioning.
| Lifecycle Stage |
Activity |
Testing Requirement |
| 1. New gas acceptance |
Receiving new SF6 gas from the supplier |
Verify purity and dew point before filling into the equipment |
| 2. Installation and filling |
Filling the equipment with SF6 after assembly |
Confirm the dew point and purity after the first filling |
| 3. Commissioning |
Putting the equipment into service |
Baseline measurement of dew point, purity and decomposition products |
| 4. Routine monitoring |
Periodic preventive tests during operation |
Compare with the baseline to detect moisture ingress and discharge activity |
| 5. Gas top-up and repair |
Topping up gas or repairing after a fault |
Measure decomposition products to assess internal arcing damage |
| 6. Decommissioning and recovery |
Removing the equipment from service |
Final gas quality record before gas recovery and recycling |
Interpretation of Test Results
Dew point
A stable dew point within the equipment specification indicates a healthy seal and drying system. A rising dew point trend between tests warns of moisture ingress through seals or gaskets, and requires investigation before the moisture level reaches the condensation risk zone.
Purity
Purity close to the rated value confirms the insulation and arc-extinguishing capability of the gas. A noticeable purity drop indicates contamination or leakage, and the gas should be topped up or treated before the equipment is returned to full service.
Decomposition products
Low and stable H2S, SO2 and CO values mean no significant discharge activity. Rising SO2 and H2S values indicate internal arcing or partial discharge and call for internal inspection; rising CO indicates decomposition of organic materials such as seals and insulation.
Care & Handling
Connect the tester only to equipment with normal gas pressure, and follow the equipment operating procedure for gas port access
Inspect the sealing O-rings of the self-locking connectors regularly and replace them if damaged
Recharge the lithium battery after each working day; the 4Ah capacity supports 10 hours of continuous operation
Store the instrument in its carrying case in a dry, clean environment
Record the measurement results in the 200-set memory with the equipment identification for trend analysis
FAQ
Q1: What is this sulfur hexafluoride tester used for?
It integrates a micro-moisture meter, a purity tester and a decomposition product analyzer in one unit, measuring the dew point, SF6 purity and H2S, SO2 and CO concentrations of SF6 gas in high-voltage equipment with a single on-site measurement.
Q2: How much gas does it save?
A single on-site measurement tests three indicators at once, cutting gas usage by two-thirds per measurement compared with three separate instruments, which significantly reduces the gas consumption of the equipment under test.
Q3: How fast are the measurements?
Dew point measurement takes about 5 minutes, and purity and decomposition product measurement takes about 2 minutes. The large screen displays the dew point measurement process as a curve.
Q4: Where can it be used?
It can be used in any SF6-insulated equipment, including GIS, SF6 circuit breakers, ring main units and gas-insulated lines in substations, power plants, industrial plants and factories, with an operating temperature range of -40 °C ~ +60 °C.
Q5: How is the test data managed?
The tester stores up to 200 sets of test data. The stored history allows engineers to compare results over time, detect gas quality degradation trends and make condition-based maintenance decisions.
Every sulfur hexafluoride tester is delivered with the main unit, self-locking connectors, gas hoses, charging adapter and operation manual, and is backed by one-year free warranty and lifetime technical service. For ordering, training and after-sales support, please contact our sales team.
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