Fike offers an optional Low Pressure Switch (LPS), P/N 02-12533,
for the purpose of continuously monitoring the container pressure
for a low-pressure condition. If the pressure inside the container
drops below 20 bar, the switch contacts will transfer and invoke a
“trouble” indication on the control panel. The LPS has a single pole,
double-throw switch that can be wired for normally open or normally
closed states.