BELIMO VRU-M1R-BAC

In demanding HVAC and building‑automation environments—such as clean rooms, hospital suites or pressure‑controlled zones—precise control of air‑volume, duct pressure and room pressure is essential. The Belimo VRU‑M1R‑BAC addresses this by combining a high‑accuracy diaphragm differential‑pressure sensor (capable of ±75 Pa measurement) with a fully featured controller that supports analog inputs/outputs and open‑protocol bus communication (BACnet, Modbus, MP‑Bus). This means one module can both sense and control, reducing the need for separate sensors, signal converters and controllers. For example, in a sensitive environment with contaminated media (dust, fibres, etc), the M1R sensor is designed to operate reliably, making it suitable for room‑pressure cascades or VAV boxes in healthcare or laboratory ventilation. Compared to simpler VAV controllers that only accept 0‑10 V inputs, the VRU‑M1R‑BAC’s hybrid bus support enables advanced monitoring, diagnostics and integration into BMS systems. Its installation‑position independence (no zeroing needed) saves commissioning time, and compatibility with Belimo VST actuators ensures seamless system building. Whether controlling a VAV unit, maintaining negative‑pressure rooms or managing fan speed via pressure loop, this unit offers professional, future‑ready performance.