Solutions for pressure, temperature, force and level measurement, flow measurement, calibration and SF6 gas solutions from WIKA are an integral component of our customers' business processes.
This is why we consider ourselves to be not just suppliers of measurement components but rather more a competent partner that offers comprehensive solutions in close co-operation with our customers – customised and precisely designed products for the exact requirement.
Back to overview
For gas density, temperature and pressure of insulating gases, with Modbus® or analogue 4 ... 20 mA signal
Permanent monitoringIn order to prevent system failures in switchgear and network outages, the permanent monitoring of the gas density is essential.
The model GD-20 calculates the current gas density from the pressure and temperature using a complex virial equation in the gas density sensor´s powerful microprocessor. Pressure changes resulting from thermal effects will be compensated by this and will not affect the output value.
MODBUS® fieldbusThe RS-485 interface communicates using the MODBUS® RTU protocol. The instrument's output parameters and their units can be configured and read according to requirements.The GD-20 model can be freely configured at the factory for any defined gas mixture consisting of SF6, N2, CF4, O2, CO2, 3M™ Novec™ 4710, He and Ar.
The calculation is based on the partial pressure method of the individual gas components.
Signal stabilityDue to its high long-term stability, the sensor is maintenance-free and requires no recalibration. Due to the hermetically sealed weld seam and a measuring cell design without sealing elements, the permanent sealing of the measuring cell is ensured.
The gas density sensor is also available with analogue output signal (4 … 20 mA) for output of the compensated pressure (p at 20 °C [68 °F]).
There are currently no documents on your wish list. You can add any document from the download area to your wish list. To do this, select the desired language using the flag symbol.
The maximum number of 20 entries was reached.
To receive your download link via e-mail, enter your address here:
The e-mail address is invalid.