HZSF-801 SF6 Gas Purity Testing Equipment
HZSF-801 SF6 Gas Purity Test Set
Technical characteristics
This SF6 gas purity detector adopts infrared principle sensor, which has the characteristics of fast measurement speed, high precision and stable performance.
Technical Parameters
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Measurement range |
0～100% |
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Resolution |
0.01% (by volume) |
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Precision |
±0.5% |
|
Repeatability |
≤±0.05% |
|
Gas flow rate |
0.5 ± 0.1 L/min (regulated by high-precision micro-metering needle valve) |
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Power supply |
AC 220V |
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Built-in rechargeable battery |
|
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Battery property |
Integrated high-capacity rechargeable lithium-ion battery; provides >10 hours continuous field operation per charge (Charging time: ~10 hours with smart auto-cutoff). |
Operating Procedure
1. Connecting to SF6 Equipment
Attach the threaded end of the measurement hose to the switch adapter and tighten it with a wrench. Close the needle valve on the other end of the measurement hose.
Insert the quick-connect end of the test hose into the sampling port of the tester. Connect the exhaust hose to the outlet port.
Finally, attach the switch adapter to the measurement interface of the SF6 electrical equipment and tighten it with a wrench.
2. Warm-Up and Self-Test
Turn on the instrument's power switch. The instrument will enter the warm-up and self-test process.
3. Checking Battery Level
The instrument is recommended to operate primarily on DC power. When using DC power, check the battery level displayed in the upper-right corner. If it is below approximately 30%, turn off the instrument, charge it, and then resume use.
4. Starting the Measurement
After completing the warm-up and self-test, the instrument will automatically enter the "Main Menu." Press the "Data Measurement" button to enter the measurement interface. The instrument will start measuring automatically.
Open the flow control valve on the front panel of the tester, then adjust the needle valve on the measurement hose to set the flow rate to approximately 0.5 LPM.
5. Storing Data
After measurement is complete, data can be saved in the instrument. Press the "Save" button to access the operation menu. Refer to the following section for specific instructions.
6. Post-Measurement Steps
Close the needle valve on the measurement hose and the regulator valve on the instrument. Remove the adapter from the SF6 electrical equipment. If measuring another device immediately, do not turn off the instrument power and proceed with the next measurement following the steps above.
7. Shutting Down
After completing all measurements, turn off the tester's power.
Information
Placement and Handling – The instrument should always be placed in a safe position to prevent accidental falling and to avoid exposure to severe vibration, which could damage internal components.
Charging – The instrument should be charged in time before use. To charge, simply connect the power cord to a 220 V socket; there is no need to turn on the power switch. The instrument will charge automatically, and the charging time generally takes more than 10 hours to reach full capacity.
Storage – When the instrument is not in use, it should be placed in its dedicated packing box and stored on a test bench or instrument rack. This protects the instrument from dust and moisture, ensuring continued reliable performance.
Annual Calibration – The instrument is calibrated with standard gas once a year. It can be sent to the manufacturer or an authorized unit for calibration to ensure measurement accuracy.
Pipe Cleaning – If the instrument is not in use, clean the SF6 gas from the instrument pipe using nitrogen to prevent residue buildup and maintain measurement integrity.
Sensor Reliability & Temperature Compensation – Utilizes an industrial-grade Non-Dispersive Infrared (NDIR) sensor equipped with automated zero-drift calibration and micro-processor temperature compensation, ensuring consistent, repeatable accuracy (≤ ±0.05%) across fluctuating ambient temperatures.
IEC 60376: Technical grade sulfur hexafluoride (SF6) for electrical equipment (Standard requirement for new gas purity: ≥ 99.7% or ≥ 99.9% by weight/volume)
IEC 60480: Guidelines for the checking and treatment of sulfur hexafluoride (SF6) taken from electrical equipment (In-service recycled gas re-use threshold: purity must be ≥ 97.0%)
DL/T 941-2005: General technical specification for SF6 gas purity testers
CIGRE Session 23 / 37: SF6 Gas Handling and Diagnostic Guidelines in Substation Maintenance
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