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Measure the density of a gas directly in the gas line or in the gas tank: This is made possible by the DGF-I1 density sensor from TrueDyne. At the heart of the sensor is a microelectromechanical system (MEMS) with an oscillator in the form of a tuning fork. For the measurement, the metal housing surrounding the MEMS is filled with the medium. The natural frequency of the oscillator varies depending on the density of the gas surrounding it. With an additional sensor element, the pressure and temperature of the medium are recorded directly at the measuring point.

The sensor is very compact with a diameter of 33 mm and a length of 63 mm and can be placed in even the smallest of spaces. It is screwed directly into the gas line or the gas tank with the integrated connection, and a filter protects against contamination. The measured values are transmitted to the higher-level system via an RS485 interface. The response time of 5 seconds enables density measurement directly in the process – the measurement does not have to be interrupted.