Analysis Instrument for Determining the Gas Humidity in SF Gas - GA20

Brand: WIKA Alexander Wiegand SE & Co. KG

The analysis instrument model GA20 is used for determining the humidity content in SF6 gas. Due to the procedures of filling and servicing equipment, a residual humidity in SF6 gas is inevitable.

However, humidity must be kept as low as possible for guaranteeing a faultless long-term usage.
Features
  • Fast test results, measuring time approx. 5 minutes. 
  • Compact and low weight. 
  • Maintenance-free. 
  • Operation via touchscreen. 
  • Long battery life. 

Specifications

Measuring Principle

  • Polymer-based capacitive humidity Sensor

Measuring Range

  • -60° ... 20° C dew point

Accuracy

  • ± 4° C dew point at < -40° C dew point
  • ± 2° C dew point at -40 ...+20° C dew point

Resolution

  • 1° Ctd

Units

  • Pressure and Temperature Compensated
  • Measured at atmospheric Pressure
  • ° Ctd, ppmv, ppmw

Flow Rate

  • 20 litres/hour

Gas Consumption

  • Approximately 1.7 litres per measurement (Under atmospheric Pressure)

Inlet Pressure

  • With automatic flow Control
  • 0.5 ... 35 bar (Gaseous)

Control Panels

  • The ‘Purge’ Button conducts the Contents of the 4-metre-long measuring Tube directly to the outlet. This should be carried out before each measurement.
  • Input via touchscreen

Display

  • Touchscreen (240 x 128 Pixel)

Voltage Supply

  • Charger: AC 100 ... 265 V, 50/60 Hz
  • Lithium-ion accumulator for approximately 24 h Operating time

Temperatures

  • Operation: 0° to +50° C
  • Storage: -10° to +60° C

Dimensions

  • W x H x D: 280 x 140 x 300 mm

Weight

  • Approximately 6 kg

Calibration

  • Recommended every 2 Years

Measurement of the humidity content (H2O) in SF6-filled equipment.

Documentation

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