Chapter I Overview
1.1 Product profile
SF6 comprehensive analyzer is specially used for index detection of insulating gas in SF6 electrical equipment, and adopts the high-performance sensor for measurement of dew point, purity and decomposition product to guarantee the accurate and stable test results. Equipped with the unique gas circuit structure, it adopts the high-precision electronic flowmeter for full-automatic detection so that the SF6 can be more accurate in gas analysis. Three indexes can be detected via one-time measurement, which greatly reduces the workload of users and improves the work efficiency. The instrument features many functions, including real-time measurement, power management, time management, file storage, parameter setting, etc., and integrates advanced sensor technology and information technology, with touch screen operation and friendly human-computer interaction touch screen. Therefore, it is the ideal equipment for SF6 gas measurement.
1.2 Main purposes and application scope
SF6 gas comprehensive test instrument can be extensively applied in the field of electric power, chemical engineering, national defense industry, metallurgy, steel, gas industry, etc. to measure various indexes of gas.
1.3 Environment conditions for service
Temperature: -20 ～ 50℃
Relative humidity: 5～90％
Atmospheric pressure: 70～106kPa
1.4 Storage and transportation conditions
Temperature: -20～50℃
Relative humidity: ≤95％
Atmospheric pressure: 70～106kPa
There shall be no corrosive gas in the storage environment.
Chapter II Characteristics and Technical Features
2.1 Product characteristics
Dual-channel flow control design without fear of pressure fluctuation
Utilization þf high-precision electronic flowmeter, with flow overruns prompt
Switch of trends of measuring objects, and real-time display of data
Self-calibration function of zero and slope after startup
Crossing-resistance interference technology of sensor
Cleaning of residual gas in air circuit
Lithium battery with ultra-large capacity, and dual purpose of AC / DC
Large-capacity data storage, and USDB one-key data export
Thermosensitive mute printer for rapid printing on the scene
2.2 Technical parameters
[SF6 gas decomposition product detection module]
|
Measurement scope |
[SO2]0～100 µl/l， [H2S]0～100 µl/l, [HF]0～20 µl/l,[CO]0～1000 µl/l |
|
Precision |
SO2, H2S: ±0.5µl/l if measurement value ≤10 µl/l; ±5% if measurement value ≥10 µl/l
CO: ±2.0 if measurement value ≤50 µl/l ±4% if measurement value ≥50 µl/l
HF: ±0.5µl/l |
|
Repeatability |
SO2, H2S: ±0.2 µl/l if measurement value ≤10 µl/l; ±2% if measurement value ≥10 µl/l
CO: ±1.5 µl/l if measurement value ≤50 µl/l; ±3% if measurement value ≥50 µl/l
HF: ±2% |
|
Resolution |
SO2, H2S,HF, CO: 0.1 µl/l |
|
Response time |
≤30s |
[SF6 purity detection module]
|
Measurement scope |
0～100% |
|
Precision |
≤±0.5% (90～100%:≤±0.2%) |
|
Repeatability |
≤±0.2% |
|
Resolution |
0.01% |
|
Response time |
≤30S |
[SF6 humidity detection module]
|
Dew point range |
―80℃～+20℃ |
|
Measurement accuracy |
±0.5℃ |
|
Micro-water scope |
0.05～23100 μL/L |
|
Measurement response time (+20℃) |
-60℃ →20℃ 5S[10s]
20 ℃→-60℃ 10S[300S] |
|
Resolution |
Dew point: 0.1℃
Micro-water: 0.1ppm (100ppm～1000ppm) 0.01ppm(10ppm～100ppm) |
|
Repetition: |
±0.2℃ |
Flow regulation 1: 0.2L/min; Flow regulation: 2:0.5-0.6L/min
2.3 Parameters of whole machine
|
Charging source |
220VAC±10% 50HZ |
|
Battery |
Lithium battery 12V 17.5AH |
|
Service time |
＞10h |
|
Display screen |
7-inch color touch screen |
|
Sample gas pressure |
≤1.0Mpa |
|
Size |
360×155×325mm |
|
Weight |
About 5.5kg |
Chapter III Basic Operation Instruction
3.1 Operation process
3.2 Operation instructions
The instrument is operated by the touch screen only by slightly pressing the key on the display screen with finger for easy operation of the instrument. Notes: Please do not click with sharp and hard objects, otherwise, the service life of touch screen would be shortened or the touch screen would be damaged.
3.3 Startup
The built-in lithium battery of instrument makes the device not connect external power supply when battery has sufficient electric quantity. Press the power switch (POWER key), then the welcome screen (refer to Fig. I) flashes:
Fig. I
Enter main measurement interface (refer to Fig. II)
Fig. II
|
1. SO2 indicating value |
2. CO indicating value |
3. H2S indicating value |
4. HF indicating value |
|
5. Temperature and humidity in current environment |
6. Return key |
7. SF6 purity value |
|
|
8. Sample gas flow 1 (decomposition product and purity flow value) |
9. Real-time time |
10. Electric quantity display |
|
|
11. "Storage" key |
12. "Print" key |
13. "Cleaning" key |
14. "Calibration" key |
15. Dew point display (operational area)
Notes: The indicating value isn't 0 when the sample gas isn't injected possibly because there is the residual sample gas measured last time in the measuring room. It is necessary to clean the measuring room with the high-purity SF6 gas or instrument; The indicating value is still not 0 after cleaning possibly due to the drifting of the zero of sensor.
Click "dew point display area" to enter the measuring interface of dew point (refer to Fig. III).
Fig. III
18. Measurement value display area of dew point 19. Sample gas flow 2 (flow value of dew point measurement channel)
Chapter IV Decomposition Product Measurement
4.1 Sample gas flow regulation
Slowly regulate the flow 1 regulating valve so that the sample gas flow in Fig. II is displayed near 0.2L/min.
4.2 Measurement, saving and printing
The gas to be measured is injected on this interface. Regulate flow 1 as about 0.2L/min; The measurement data are basically stable after the gas to be measured is injected for about 3 minutes. After the measurement data are stable, click "store" key to select whether the current measurement data are saved. Click "print" key to select whether the current measurement data are printed.
4.3 Cleaning
The cleaning system imports the ambient air into the instrument to measure pipeline and to dilute the concentration of component gas near sensor, thus protecting sensor and prolonging the service life of sensor. It is suggested to start the cleaning system in the following conditions: a) The excessive concentration of decomposition product components in the detected gas surpasses the sensor range and may damage sensor. At this time, it is necessary to immediately pull up the quick joint of the air inlet end and start the cleaning system to reduce the concentration of decomposition product components to near zero. b) When there are decomposition product components in the detected gas and the instrument is packed for saving after testing, please start the cleaning system to clean the decomposition product components, then pack up instrument for ling-time saving.
On the main measurement interface in Fig. II, click "clean" key to enter the "cleaning processing" prompt interface.
Press "cancel" key to return the main measurement interface of "historical data" (Fig. II); Press "ok" key to start cleaning.
4.4 Calibration
The [zero calibration] process of instrument is to set zero for the decomposition product gas sensor in its instrument. The gas used for zero setting and injected into sensor shall be high-purity SF6 gas. The flow is regulated as 0.2L/min. (If the value of decomposition product is unable to return to zero after cleaning, such function shall be used after the drifting of zero value)
Click the "calibration" key on "Fig. II" screen to display the following display.
Click the "zero calibration" key on the screen to enter the "zero calibration (decomposition product)" interface.
Inject SF6 gas or select air as per the prompt information, click "zero setting" for automatic zero regulation after 5 minutes.
The following interface is displayed after zero setting.
Click "return" key to return to the main measuring interface (Fig. II).
Chapter V SF6 Purity Measurement
5.1 Sample gas flow regulation
Slowly regulate the flow 1 regulating valve so that the sample gas flow in Fig. II is displayed near 0.2L/min.
5.2 Measurement, saving and printing
The main measurement interface (the following figure) could display the SF6 purity indicating value. In the measurement process, such indicating value would track the purity indicating value change of sensor detection.
After the measurement data are stable, click "store" key to select whether the current measurement data are saved. Click "print" key to select whether the current measurement data are printed.
5.3 Calibration
If the instrument has an obvious deviation after long-term use, users shall calibrate the purity range. The calibration method is shown as below:
Click the "calibration" key on "Fig. II" screen to display the following display:
Click the "purity calibration" key on screen again to enter the "purity calibration" interface.
Enter the SF6 gas with purity over 99.99% as per the prompt message, and then press "ok" key after the instrument reading is stable to achieve the calibration of purity range.
Chapter VI Dew Point Measurement
6.1 Sample gas flow regulation
Slowly regulate the flow 2 regulating valve so that the sample gas flow in Fig. II is displayed near 0.5L/min.
6.2 Measurement, saving and printing
The dew point measurement interface could display the indicating value of dew point (D) and Micro-water (H). Indicating value will track the change of measured indicating value after the balance of dew point measurement at the measurement status. Indicating value will track the measurement results (no display at startup) at the non-measurement status.
(in Fig. II) click dew point (D: and H:) indicating value display area to enter the dew point measurement interface:
Such interface could display the values of dew point, micro-water, PP20, etc. in real time, and the left area displays the real-time curve of dew point.
Click "save" key to select whether the current measurement data are saved. Click "print" key to select whether the current measurement data are printed.
Chapter VII Other Functions
Click "return" key on Fig. II interface to enter the following main interface:
Click "comprehensive testing" key on such main interface to enter the main measurement interface in Fig. II.
7.1 Historical data
Click the "historical data" key on main interface to enter the "historical data" interface and check the saved historical data record.
Press "delete" key on the "historical data" interface enter the "delete record" prompt interface, then press "ok" key to delete current historical data of being checked. Press "cancel" key to cancel the deletion operation, and return "historical data" interface.
Press "print" key on the "historical data" interface enter the "printing record" prompt interface, then press "ok" key to print current historical data of being checked. Press "cancel" key to cancel the printing operation, and return "historical data" interface.
7.2 U-disk memory
Press "U-disk memory " on "main interface" to enter the "U-disk memory" prompt interface. At this time, insert U-disk to automatically generate the saved historical data into "zh_data.csv" document and save in U-disk; After data are saved, you would be prompted to unplug the U-disk.
7.3 Formatting
Press "formatting" key on "main interface" to enter the prompt interface of "formatting of historical data". Press "ok" key to delete historical data quickly and completely; Or press "cancel" key to cancel the formatting operation, and return to main interface.
7.4 Equipment information
Press "equipment information" key on "main interface" to enter the "equipment information" prompt interface. Check the relevant information of products. Press the "cancel" key to return to the main interface.
The instrument is the precision measurement equipment, and shall be regularly maintained to guarantee its reliable work and stable performance.
If the built-in lithium battery of instrument displays the electric quantity as 0 (refer to Fig. II of main measurement interface: electric quantity display of lithium battery), the adapter charger shall be adopted for charging. The charging port is set on the back of the instrument. Please charge with the fitted power adapter.
Instrument shall be saved in the environment without corrosive gas. Notes: The flow regulating valve of pipeline shall be switched off. It is prohibited to screw the regulating valve to the extremity to prevent damaging the regulating valve.
The appearance and operation panel of the instrument shall be cleaned with the flexible cleanser or disinfectant.
The instrument shall be charged regularly to guarantee the service life of battery.
Timely calibration of instrument is necessary condition to keep the instrument accuracy. It is suggested to carry out calibration once a year.
The instrument could be calibrated in the calibration service center of our company. Our company provides the paid calibration service beyond the warranty period.
Within the warranty period and due to non-human reasons, our company shall provide the free repair service, and customers only need to send the instrument to our company. Beyond the warranty period and due to human reasons, our company shall provide the paid service.
