Pressure

Pressure

Pressure measurement covers absolute, gauge, and differential pressure—and it is frequently leveraged indirectly for level and flow applications via hydrostatic and differential-pressure flow methods. Endress+Hauser frames pressure technology as broadly applicable to liquids, pastes, and gases, with a wide range of sensor technologies intended to fit diverse applications. The product categorization explicitly ties pressure to absolute/gauge measurement as well as hydrostatic level and differential-pressure flow measurement. 

Modern pressure instrumentation typically integrates sensing, temperature compensation, signal processing, and communication in compact, field-ready assemblies. Selection commonly considers measurement range and turndown, overload capability, wetted material compatibility, diaphragm and seal options for corrosive or hygienic service, and the impact of impulse-line dynamics in differential applications. Integration and configuration features can also be important, especially where standardization is required across a large installed base.

Benefits include stable control of reactors and utilities, improved equipment protection, and earlier detection of abnormal conditions such as plugged impulse lines, filter loading, pump cavitation risk, or heat-exchanger fouling indicated by shifting differential pressures. Digital communications and common industrial protocols enable streamlined commissioning, device diagnostics, and consistent integration into automation and asset management practices; Endress+Hauser lists common interfaces including analog 0/4–20 mA, HART, FOUNDATION Fieldbus H1, PROFIBUS PA, and PROFINET over Ethernet-APL, among others.

Typical applications include pump discharge and suction monitoring, compressor and gas header control, vessel pressure control, boiler and steam systems, custody and process DP flow elements, and hydrostatic tank level in open or vented vessels. Differential pressure is also widely used for filter monitoring, HVAC/process ventilation control, and flow verification where primary elements are already installed.

High-performance results depend on installation details: proper impulse line routing and heat tracing where needed, avoiding trapped gas in liquid lines (or liquid in gas lines), and managing condensation in steam service. For sealed or remote diaphragm installations, capillary routing and temperature gradients must be considered as part of the measurement uncertainty. Proof testing, calibration strategy, and safety instrumented function alignment should be defined with the same rigor as the measurement range selection.

Instrumentation and Controls., an exclusive authorized representative of sales and service for Endress+Hauser.