Pressure and vacuum sensors

Pressure and vacuum sensors

Pressure and vacuum sensors measure liquid or gas pressure for threshold monitoring or continuous process control. Applications include hydraulic and pneumatic circuits, pumping systems, vacuum equipment and filter monitoring using differential pressure. Selection starts with the pressure reference: gauge, absolute or differential. Measuring range, pressure peaks, temperature and compatibility of wetted materials with the fluid must be checked. Process connection, accuracy, local display and a 4–20 mA, 0–10 V, IO-Link or switching output complete the specification. HART pressure transmitters combine an analogue 4–20 mA signal with digital communication for configuration and diagnostics, depending on the model and integration system. ATEX pressure sensors and IECEx-certified pressure transmitters are selected for potentially explosive atmospheres, including chemical and oil and gas installations. Certification, zone, Ex marking, gas or dust group and temperature limits must match the application. ATEX / IECEx requirements and HART communication are checked separately for the exact configuration.