Direct acting Pneumatic Velocity Controller, Uses "B" Type Supply Unit

Overview:
An ultra-sensitive air velocity sensor and pneumatic controller, control pneumatic damper actuators in heating and air conditioning systems to provide constant air velocity in the duct regardless of the static pressure.

Features:

State-of-the-art design provides reliable operation.

Not position sensitive.

Direct Acting (DA) and Reverse Acting (RA) models are available.

Insensitive to static pressure changes.

Accurate control throughout entire velocity range.

Graduated scales for minimum and maximum velocity adjustments.

Velocity reset by thermostat demand.

Adaptable to many terminal unit control strategies.

Velocitrol Air Velocity Sensor

Remote Sensor: Yes

Airflow Usage 0.029 scfm (13.7 mL/s), includes supply for bleed type thermostats for type B, does not include thermostat air for type C controller

Control Range (fpm): 500 fpm up to 3500 fpm by changing orifice

Dimensions (in.): Controller: 1-3/4 in. high x 3-1/4 in. wide x 2-3/8 in. deep / Sensor: 3-3/16 in. high x 1-3/4 in. wide x 4-3/16 in. long with orifice and 3-3/8 in. long without orifice

For normally open damper and one-pipe thermostat

Mainline Air Pressure (min) (psi): 18 psi

Nominal Mainline Air Pressure (psi): 20 psi