The sensor continuously monitors the pressure and/or rate-of-rise in a protected vessel or connecting ductwork. It analyses the signal, determines if it fits the parameters associated with an explosion and sends a signal to a system controller. Each Sensor unit is fully programmable for its location, hazard and protected volume. The connected Logic Box is also programmable to meet the configuration needs. On receiving a discharge signal the controller can activate the Dry Chemical Suppression system (sodium Bicarbonate) or Hot Water Suppression system, integrate process control, and notify operations personnel of the event.