It is suited for measuring dynamic pressure changes. All other types are considered passive. Passive transducers require auxiliary electrical input that they modulate as a function of the mechanical displacement to supply electrical output. As all these transducers evolved from the earliest incarnations, they have undergone remarkable changes. And, because this technique is adaptable to volume manufacture, costs have fallen considerably in the technologies to which micromachining has been adapted, namely piezoelectric, strain gage, and capacitance types.
Pressure sensors used in the consumer market have specialized functions.
The prevalent technologies in these applications are strain gage and capacitance devices. Potentiometer, variable reluctance, and LVDT types have not been miniaturized, in size or price, to the extent of the others, and play a larger role in retrofit and replacement situations. Small sensor puts pressure on industrial fumes I n heavy equipment manufacturing, in-place welding must often be done in place on large metal assemblies. During operation, air cleaner filters clog and lower the efficiency of the unit. To clean and adjust the system s differential pressure back to normal operating conditions, DCT1000 provides the timing sequence, which energizes the solenoid valves, supplying compressed air to clean the filters.