PBAX SERIES
Round plastic VAV regulators for regulating exhaust air containing aggressive components in laboratories and production areas
The body and flapper of the control valve are covered with fire-resistant polypropylene
Compact design with a length of only 400 mm
High control accuracy even when installed in unfavorable air flow conditions.
Combination with high speed drives (air management systems)
Air flow measurement with fairing or nozzle
Removable sensor tubes allow for easy cleaning
Damper tightness according to EN 1751, class 4
Housing tightness according to EN 1751 class C
Optional equipment
With flanges on both sides
Description
The VAV air flow regulator is equipped with an effective pressure sensor with a fairing or nozzle for measuring air flow.
Control components (accessories) include an effective pressure sensor, which converts the effective pressure into an electrical signal, a controller and an actuator. The controller compares the actual value with the setpoint and modifies the drive control signal if there is a difference between the two values.
- Default setting value
- Fume Hood Control
The airflow setpoint depends on the control strategy of the fume hood:
- Air speed at cabinet inlet
- Screen position
- Combination of cabinet inlet air speed and screen position
- Use of changeover contacts (2-position, 3-position)
- Constant value
Air flow regulation
The air flow setpoint is determined by the external setpoint setting
① Venturi nozzle (optional)
② EASYLAB control component
③ Housing
④ Drive
⑤ Fairing and sensor tubes
