SF6 Micro Water Measurement Instrument
Detailed Introduction:
The SF6 micro water measurement instrument adopts microcontroller technology, enabling automatic conversion among units such as dew point, PPmV, and excellent humidity, without the need for manual table lookup and conversion. The circuit part of the instrument is advanced and reliable. To meet the needs of field operations, the instrument is designed for both AC and DC power, with a built-in battery that can work continuously for more than 20 hours, broadening the scope of use and greatly facilitating users. New sensor technology, using thin film sensing technology and composite thin film moisture-sensitive materials, possesses three world-class features. The polyester film probe DRYCAP is resistant to condensation, dust particles, and is unaffected by gasoline and most gases.
Operating Steps:
A) Power on and measure
1. Connect to 220V power supply, turn on the "power lock", the power indicator lights up, and the circuit is connected.
2. Turn on the "operation switch", the operation indicator lights up, and the instrument runs.
3. After 5-10 minutes, turn on the "measurement switch", the measurement indicator lights up, and purple light is emitted from the probe window; if no light is emitted, after preheating for a few minutes, the probe window will emit purple light.
4. Set the "range switch" to "self-calibration", the instrument needs to preheat for 10-15 minutes, and the pointer returns to below 20 divisions, indicating the instrument is normal and can be tested. Otherwise, the instrument may be abnormal or there is too much SF6 gas in the surrounding environment.
5. Set the "range switch" to the required sensitivity, then use the "zero adjustment knob" to adjust the instrument indication to zero.
Wide measurement range, fast response time, short measurement cycle, intuitive display, and easy operation. The instrument is applicable in a wide range of fields, including humidity measurement of air, nitrogen, inert gases, and any gas without corrosive media, especially suitable for humidity measurement of SF6 gas. It can be used in electric power, petrochemical, metallurgy, environmental protection, scientific research institutions, and other departments, with extremely high cost performance.
Performance Features:
1. Portable design: The instrument is lighter, easy to carry and use.
2. Intelligent calibration: The sensor probe can automatically calibrate the zero point, ensuring the accuracy of each measurement.
3. Fast and gas-saving: The gas consumption during measurement is only about 2L (101.2kPa).
4. Self-locking connector: Manufacturer-supplied microcomputer SF6 micro water measurement instrument uses German original imported self-locking connector, safe and reliable, no gas leakage.
5. Data storage: Manufacturer-supplied microcomputer SF6 micro water measurement instrument adopts large-capacity design, can store up to 200 sets of test data.
6. Clear display: The LCD screen directly displays dew point, micro water (ppm), ambient temperature, ambient humidity, time and date, battery level, etc.
7. RS232 interface: Can be connected to a serial printer for data printing.
8. Built-in power supply: Built-in large-capacity rechargeable lithium battery, can work continuously for 10 hours after a full charge.
Precautions:
◆ The instrument should be placed in a safe position to prevent falling and avoid severe vibration.
◆ Users should not open the instrument without authorization.
◆ Do not measure corrosive gases.
◆ The probe should be cleaned and calibrated after a certain period of use. The calibration interval is one year. When calibration is needed, please contact us.
◆ When adjusting the gas flow, the needle valve should be opened slowly to make the flow indication at 0.5~0.6 liters/minute.
◆ After using the instrument for one day (using battery), it should be charged in time. When charging, just plug the power cord into a 220V socket. No need to turn on the power switch. The instrument will automatically charge. The charging time is generally more than 5 hours.
Technical Specifications:
Micro water range: -60～+20℃, accuracy: ±2℃
Response time (+20℃): -60～+20℃, 5s (63%) 45s (90%)
+20～-60℃, 10s (63%) 240s (90%)
Operating ambient temperature: -10 ～+50℃
Operating ambient humidity: 5 ～90%RH
Flow range: 0～1 liter/minute
Working pressure: 0～1MPa
Working power: AC/DC dual use, built-in lithium battery
Instrument dimensions: 250×200×90 mm3
Instrument weight: 2.0Kg
