VRpro volume flow controller
VRpro electronic volume flow controllers regulate variable and constant supply air and exhaust air volume flows. Your choice of drive allows analog or bus protocol control (MP-Bus, Modbus, BACnet). Drives are available with standard speed, high speed, or spring return. Dynamic or static sensors ensure high control accuracy and enable operation with very low pressure losses.
Technical details
- For constant and variable volume flows
- Integrated static or dynamic differential pressure sensor
- High control accuracy
- Analog or bus-compatible communication (MP-Bus, Modbus, BACnet)
- Actuators with standard speed, high speed, spring return
- Leak tightness classes according to DIN EN 1751: Casing C, shut-off damper 3 or 4
- Design Maintenance-free
- EPD (Environmental Product Declaration) in preparation
- Hygiene certificate
Declarations & proofs
Product details
The electronic volume flow controllers VRpro are used to control variable and constant volume flows. They are maintenance-free and can be used in any position. They are suitable for controlling supply and exhaust air volume flows in ventilation and air conditioning systems. The air volume flow is controlled via the differential pressure.
Volume flow controller VRpro design
The casing is made of galvanized sheet steel. The damper blade for volume flow control is centrally mounted and equipped with a circumferential seal. The bearing axes are made of stainless steel and are guided in special bearing bushes. The differential pressure is determined by a measuring cross using a sensor integrated in the controller.
Leak tightness classes
The leak tightness classes according to DIN EN 1751 are class C for the casing and leak tightness class 3 (DN 100, 125) and 4 (DN 160 to DN 400) for the shut-off damper.
Control components and control accuracy
The control components consist of a controller with integrated static or dynamic sensor and an actuator or motor with standard operation, fast operation or spring return. The sensor and controller are mounted on mounting brackets that can be manually tilted or flexibly offset in confined spaces.
The VRpro volume flow controller is controlled and electrically connected analogously or via MP-Bus®, BACnet or Modbus. The VRpro volume flow controllers enable high control accuracies with only approx. ± 5 % to ± 20 % deviation from the actual volume flow; accordingly, the volume flows are controlled across the entire pressure range from 5 Pa to 1000 Pa.
Operation modes of the VRpro volume flow controller
All control components enable the operating modes “Constant”, “Variable 0 – 10 V, 2 – 10 V, and adjustable”. Overrides, parallel operation and sequential circuits are possible. The volume flow controller can be ordered with factory settings.
On-site modifications can be made using an adjustment device, in combination with an adjustment device and a PC, or via the integrated NFC interface with a smartphone.
Product markings
VRpro volume flow controllers have a hygiene certificate from an independent testing institute. An Environmental Product Declaration (EPD) is also available.
Options
- Double-sided lip seal
- Prepared for insulation on site
- Acoustic insulation with sheet metal jacket, factory-mounted to improve sound insulation
- SRC duct silencer (lengths 600 mm, 900 mm) to reduce noise emission from the ventilation duct
Technical specifications
Not all of the variant values listed here can be combined with each other. Use our Wildeboer configurator to easily check the available options.
| Nominal size |
|
| Differential pressure sensor |
|
| Operating direction Spring return |
|
| Lip seal |
|
| Acoustic insulation |
|
| Operating mode |
|
Product pictures
