Design
The gas density and dew point transmitter GD-DP consists of the following principal components:
- Tubular casing, stainless steel grade 1.4305
- Piezoresistive pressure sensor
- Capacitive polymer dew point sensor
- Electronic evaluation unit with microprocessor
- Pressure connection G 1/2″
- Electrical connection with circular connector M12x1
Operating principle
By way of its piezoresistive sensor, the GD-DP continuously measures the gas density and temperature in the relevant gas chamber. At the same time, the device’s capacitive polymer dew point sensor continuously monitors the current dew point. The signals generated by the sensors are digitally compensated by the evaluation unit with microprocessor and presented as a high-precision output signal. The output signal is transmitted to a connected PC or the customer’s own diagnostic system. The measured values can then be used for documentation, trend analysis or other purposes.
Unlike electromechanical density monitors, which serve only as simple switches when the loss of SF6 violates set limit values, the GD-DP is capable of actively monitoring the gas density and dew point temperature. The transmitter also facilitates the monitoring of SF6 emissions from high-voltage systems. The GD-DP can likewise be programmed to monitor the density and dew point of other gases.
The information on this website represents the state of knowledge at the time of writing. Technical specifications are subject to modifications. Comde-Derenda GmbH accepts no liability whatsoever for the content provided or for damages resulting from the use of its products.
