Catalogs >
MP3 >
AT-RPR Series

AT-RPR Series
7Pages

Catalog excerpts

AT-RPR SERIES RECTANGULAR CONSTANT AIR FLOW REGULATORS OVERVIEW Overview: the AT-RPR series of constant air flow regulators are used to automatically regulate the flow in rectangular ducts at a fixed capacity. The scope is to maintain the nominal value of the constant air capacity, continuously and independently from the pressure variations in the duct. W orking principle: The constant air flow regulator works by means of a slidable asymmetric and angled plate that guaranties a sensitive response even at low air flows. Pressure, precision and purpose: The regulator efficiently operates from a minimum pressure different, which depends on the air speed (see diagram 1), up to a maximum pressure difference of 1,000 Pa. The general variation in the air flow is included within a ± 10% tolerance. If the air speed is less than 4 m/s or if the regulator is installed horizontally, the variations can be higher than those indicated. This also occurs when the air speed profile is not uniform or is distorted by curves, edges, bottle necks or dirt. T emperature: The control system operated within a temperature range of between -30 °C and +100 °C. A special heat resistant version can withstand temperatures up to 250 °C (300 °C for short periods) and is available on request. For air flow controllers with electric or pneumatic actuators. it will be necessary to take into account the operational temperature range of the actuators themselves. Construction: The control plate is supported by two slidable buffers made in PTFE that do not require maintenance. The pneumatic dampers avoid vibrations and oscillations of the control plate and guaranty a sensible response behaviour and precise control. Specifications: - Self regulating, constant air flow regulator. - Factory presetting to customer requested value - Manual setting of the air flow through the calibration device. - Variable base and height, length constant at 385 mm - Base value between 150 mm and 600 mm - Heights between 150 mm and 300 mm - The base must be between the value of the height and its double (H < W < 2H) - Fixing through 4 30 mm holes on flanges

Open the catalog to page 1

RECTANGULAR CONSTANT AIR FLOW REGULATORS TECHNICAL SPECIFICATIONS Installation: The precise balancing of the control plate by means of a counter-weight, guaranties an exact control in any installation. It is recommended that the front air speed profile be as much as possible undisturbed because possible distortions (asymmetric to the flow of air on entry, bottle necks and edges) can have negative effects on the response and control. Calibration: The air flow regulators can be supplied either with setting made by the customer or precalibrated in the factory using customer requested values....

Open the catalog to page 2

RECTANGULAR CONSTANT AIR FLOW REGULATORS PERFORMANCE AT-RPR SERIES

Open the catalog to page 3

AT-RPR SERIES RECTANGULAR CONSTANT AIR FLOW REGULATORS PERFORMANCE base (mm)

Open the catalog to page 4

RECTANGULAR CONSTANT AIR FLOW REGULATORS HOW TO ORDER AT-RPR SERIES j AT-RP Constant air flow regulator j R Rectangular jBase j Height

Open the catalog to page 5

CIRCULAR AIR FLOW REGULATORS AT-RPC SERIES OVERVIEW Overview: The AT-RPC series air flow regulators are independent control units that work without absorbing any external power. These regulators can be considered as self regulating duct dampers able to supply a flow of air requested independently from the variations of pressures in the system. As a result, the control system guarantees the balancing requirements of the system and ensures a constant air flow. Variable airflow models are available with electric or pneumatic actuators. W orking principle : The air flow control system works by...

Open the catalog to page 7