Pressure measurement system - has electronic switching for the setting valves with a control to store the measured values for an automatic pressure measurement action

摘要

The appts. to measure pressures, has a pressure sensor (12) with the entry pressure connection (28'') linked to a connection (36) of a setting valve (38), where its operating unit (48) is connected to an electronic switch system (24). The switch system (24) is linked to a control (22) which as the signal of the measurement amplifier (18) at its input (26). Nominal pressure values can be set at the control (22). The setting valve (38) has a further connection (40) for a feed line (42) to deliver gas or for connection to the atmosphere. An output at the switch (24) is linked to the operating unit (62) for a further setting valve (64) which on one side, is connected (28'') to the pressure sensor (12) and, on the other side, has an evacuation connection (66). USE/ADVANTAGE - The pressure measurement is for closed vessels with microbiological activities during the growth of microorganisms. The system stores the measured values which can be used for an automatic measurement action.