Pressure Sensing

Pressure is measured utilizing an all stainless-steel wetted surface pressure diaphragm with a proprietary sputtered thin-film full-bridge strain gauge circuit. The sputtered metal strain gauge circuit offers superior long term stability and higher temperature capability than other strain gauge technologies. The sensing element temperature is measured using a thin-film platinum RTD.

Temperature Sensing

Of the many detectors devised for temperature measurement, the configuration that offers the best stability with the lowest hysteresis, is one in which a platinum coil is supported inside the capillaries of a two or four-bore, high-purity alumina insulator. Either the use of cement to clamp one side of the coil to the capillary wall, or, preferably, the insertion of soft alumina powder to prevent the platinum coil from vibrating freely helps achieve good reproducibility in industrial applications. We utilize this wire-wound type, in which the platinum winding is partially or fully supported (application dependent) by a high temperature alumina powder inside a ceramic tube. This construction provides a detector in which stability, interchangeability, and accuracy are the highest available for industrial and scientific applications.

Flow Sensing

Our orifice flowmeters compute the flow of fluid or air by measuring the pressure drop across an orifice. The fluid density can be programmed into the sensor for accurate measurements of many mediums.

Want to learn more about sensing?
Check out Electrochem's feature in October's issue of NASA Tech Briefs.