Overview
The Belimo 22WP-531 is an active liquid pressure sensor designed for low-pressure monitoring in HVAC hydronic systems. Delivering a 4-20 mA current loop output, it covers a measuring range of 0 to 15 psi with high precision and reliability.
Features
- Active 4…20 mA current output signal for long-distance transmission
- Rugged NEMA 4 / IP65 stainless steel housing
- Compact design for easy pipe mounting
Specifications
- Pressure Range: 0…15 psi
- Output Signal: 4…20 mA
- Connection: 1/4″ NPT
- Enclosure Rating: NEMA 4 / IP65
Applications
- Low-pressure liquid monitoring in HVAC and heating systems
- Pressure sensing for water, glycol mixtures, and plant fluids


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