Ascenda High Performance Materials announced on February 27 that it plans to invest US$1.2 billion in its Alvin production facility in Texas to build propane dehydrogenation (PDH) facilities. The PDH facility will use propane to produce polymerization grade and chemical grade propylene.
The PDH plant is expected to start in January 2014 and be put into production in the fourth quarter of 2015. The device will be built in Ascend's existing Chocolate Bayou unit at Alvin.
The sensor is usually composed of sensitive element, conversion element and measuring circuit.
1. The sensitive element refers to the part that can directly feel (or respond to) the measurement, that is, the sensitive element measured through the sensor is converted into a non electric quantity or other quantity that has a definite relationship with the measurement.
2. The conversion element converts the non electric quantity into electrical parameters.
3. The function of the measuring circuit is to convert the electrical parameters input by the conversion element into measurable quantities such as voltage, current or frequency for display, recording, control and processing.
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