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The gas density sensor Trafag 8773 has been specially designed for monitoring insulation gases. The gas density is measured with an oscillating quartz with excellent long term stability. A second quartz in vacuum is used to compensate for a possible temperature error. The output signal is a pulse train modulated onto the supply current. The measured density is propotional to the pulse frequency. Additionally the temperature can be measured over the pulse width of the frequency signal.
Gas Density Sensor
0...60 kg SF6 /m3 10 ... 253 Hz
Oscillating quartz measurement
Designation of application
Density sensor for SF6 and other gases
Digital: current pulses onto supply current Density signal: pulse frequency 10...253 Hz (range 0...51.22kg SF6/m3)