A properly dimensioned pressure monitoring system is crucial for both operational reliability and energy efficiency. Two key components – pressure switch and pressure transmitter –play different roles. Below, we will walk you through how they work, where they are used, and how to choose the right solution.

What is a pressure sensor/pressure transmitter?

A pressure sensor converts the pressureinto a proportional electrical signal (usually 4-20 mA, 0-10 V or digital fieldbus). It thus provides continuous real-time values that can be logged, regulated and monitored remotely. 

Key Points 

Higher accuracy (< ±0.1% of the measurement range of premium models).  

Capability for advanced signal processing, IIoT integration, and predictive maintenance. 

Higher purchase price, often requires analogue input on PLC or separate data acquisition system.  

Common applications: process tanks in the food and pharmaceutical industries, hydraulic systems with precision requirements, energy optimization in district heating, level measurement via hydrostatic principle, and pressure monitoring in filters and diaphragm pumps.  

Click to view: What is a pressure switch?