SENSORS: The PX309 Series pressure transducers from OMEGA employ the latest aerospace silicon technology and offer a choice of absolute pressures from 5 to 300 psi, gage pressures from 1 to 10,000 psi and three output ranges, 0 to 100 mV, 0 to 5V dc and 4 to 20 mA, which makes them compatible with most process-control equipment. All stainless-steel construction provides the durability needed for industrial applications. The transducers use the latest semiconductor sensor technology. Pressure ranges 50 psi and below plus all absolute pressure ranges use a high stability semiconductor pressure sensor isolated via a fluid-filled, stainless-steel diaphragm system. Pressure ranges 100 psi and above use high-accuracy silicon strain gages molecularly bonded to a stainless-steel diaphragm. Both systems provide a rugged sensor with high accuracy and excellent long-term stability. Three connection styles are available: 1.5 m (5 ft) cable, mini DIN (mating connector included) and military-style twist-lock. All models are RoHS and CE compliant. Prices start at $175.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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