Endevco Model 8530B Series absolute-pressure transducers

The miniature, high-sensitivity piezoresistive absolute-pressure transducers in the Endevco Model 8530B Series are available for a range of hydraulic and pneumatic pressure-measurement applications. With a 3.86-mm-dia. face and weighing just 2.3 g, these devices are available in ranges of 200, 500 and 1,000 psia with 300-mV full-scale output and high resonant frequencies of 750 kHz (200 psia) and 1,000 kHz (500 and 1,000 psia). The transducers rely on an active, four-arm strain gage bridge that is diffused into a sculpted silicon diaphragm, which provides maximum sensitivity and wideband frequency response. The volume behind the diaphragm is evacuated and glass-sealed to provide an absolute-pressure reference. The transducers also feature self-contained, full hybrid temperature compensation, providing stable performance over a temperature range of 0°F to 200°F (–18°C to 93°C).