The 230EA-00100AB Baratron® Absolute Pressure / Vacuum Transmitter features 100 Torr full scale pressure measurement with 0.5% reading accuracy, and a 0.5 inch OD tube fitting. This design of the 230E offers superior temperature compensation, a dual electrode design, and a higher operating temperature. With the 230E, pressure is determined by measuring the change in capacitance between the Inconel® diaphragm and an adjacent dual electrode. The diaphragm deflects as a result of pressure changes causing a change in the capacitance between the diaphragm and the electrode. An electronic circuit converts the pressure sensitive capacitance to a precise linear 4-20 mA current output. It also permits an accuracy specification as a percentage of output reading, rather than in terms of Full Scale reading.