The Model 192 PDI was originally designed to fit within a wall using 2 x 4 studs. It is mounted outside of the clean room, with a small monitor inside the clean room, having an audible alarm and two indicators to show when pressure is normal or abnormal. It detects negative pressure in bio containment areas common in bio pharmaceuticals as well as the positive pressure common to electronic facilities. It has digital differential pressure display with resolution of 0.001" W.C., and pressure/vacuum range of 0.5" W.C.. Differential pressure is indicated by illuminated LED s and audio alarm. Internal adjustable time delay prevents activating audible alarm by momentary door opening. Can be supplied with 4-20 mA current loop. Polished stainless steel monitor panel.

Units usually are in stock for immediate delivery. The audible alarm can be turned off, but it will be reactivated when normal differential pressure is restored.