Overview
The Belimo 22WDP-511 is an active differential liquid pressure sensor designed to measure pressure drops across pumps, heat exchangers, and filters in HVAC hydronic systems. It provides an active 0…10 V analog output signal.
Features
- Active 0…10 V output signal proportional to differential pressure
- Stainless steel construction for durability in wet media applications
- NEMA 4 / IP65 rated rugged enclosure
- High burst pressure tolerance for reliable system safety
Specifications
- Pressure Range: 0 to 15 psi [0 to 1 bar]
- Output Signal: 0…10 V
- Media: Water, water-glycol mixtures
- Enclosure Rating: NEMA 4 / IP65
- Supply Voltage: 24 V AC/DC
Applications
- Differential pressure monitoring across hydronic pumps and valves
- Chilled water and hot water HVAC system pressure balancing
- Strainer and filter clogging detection in liquid lines



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