Electronic Pressure Switch

The Model 31D electronic pressure switch from Herion USA Inc., Warrendale, Pa., comes in three pneumatic ranges from vacuum to 360 psi. The switch digitally displays actual pressure, LED status, and adjustable hysteresis. It is suitable for resistive or inductive loads to 1A and switching points may be calibrated without applied pressure. A strain-gage pressure sensor and solid-state output extends cycle life.