SF6 Intelligent Micro-Water Dew Point Meter
Features
Automatic zero calibration
Advanced probe protection function
Full-range curve tracking and correction
Simple operation and easy portability
Unique large-screen display
Anti-pollution and anti-interference
Exclusive large storage capacity
Good repeatability and fast response
*Curve display
High sensitivity and good stability
*Battery level display
Automatic conversion to standard value at 20°C
SF6 Intelligent Micro-Water Dew Point Meter
Technical Parameters
Response time: ≤1min for dew point from +20°C to -20°C;
≤3min for -20°C to -40°C;
≤8min for -40°C to -60°C;
Power supply: 220V AC/DC dual use, one charge lasts 8 hours
Operating environment: Temperature: -20°C to +60°C
Relative humidity: 0 to 95%
Pressure: ≤1.0MPa
Dimensions and weight: 300×220×130mm; 4kg
Field Testing
Operating Steps
First, turn on the power and allow the instrument to perform automatic calibration for about five minutes;
Connect one end of the inlet pipe to the instrument and close the flow control valve; then connect the other end to the equipment under test;
Open the flow control valve and adjust to about 0.6-0.7L/min;
The measurement will be completed automatically within a few minutes (the first sample takes about ten minutes, subsequent continuous measurements usually take only 2-5 minutes; if conversion is needed, refer to the data conversion section). Press the storage key to save data, and repeatedly press the display key to view historical data;
For continuous measurements, do not turn off the instrument power; simply repeat the above steps to save measurement time;
After use, always turn off the power to protect the instrument battery;
Data Conversion
When the ambient temperature is above 20°C and the measured value is higher than the standard value (the allowable moisture content for SF6 equipment at 20°C as specified by national standards), the measured value needs to be converted to the value at 20°C. The method is as follows:
When the measured gas temperature is stable, set the K value to +0.5 in the measurement parameter menu under the settings menu, and the measured value will be the value at 20°C.
When the measured gas temperature is unstable, wait until the measured value stabilizes, then set the K value to +0.5; the displayed value will then be the value at 20°C.
When the ambient temperature is below 20°C, or when the measured value is below the standard value even if the ambient temperature is above 20°C, conversion is generally not needed; in this case, the K value should be 0.
