Privacy Policy

Effective Date: August 26, 2025

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blue background, a set of control and backdraft dampers standing out

Pottorff > Air Control Dampers > Air Control Dampers > Airflow Measuring Stations > AM-51-PD

Air Control Dampers

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Airflow Measuring Stations

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DOCUMENT CART

Model AM-51-PD

Airflow Measuring Station
Aluminum Airfoil - Pressure Differential

AM-51-PD airflow measuring stations employ a low leakage control damper with highly accurate airflow measuring equipment in a single compact assembly. The Pottorff CD-51 control damper is factory mounted with a modulating 24V actuator, multi-point self-averaging pressure sensing probes, and VELTRON DPT 2500-plus transmitter to provide airflow measuring along with the ability to control airflow all in one easy to install assembly

AM-51-PD Aluminum Airfoil - Pressure Differential

Standard Construction

Damper Frame: 5" x 1" (127 x 25) galvanized steel hat channel with interlocking corner gusset. Equivalent to 13 gauge (2.4) channel frame. Low profile head and sill are used in sizes less than 13" (330) high.

Damper Blades: 6" (152) heavy gauge, dual wall extruded aluminum - airfoil. Parallel.

Sleeve: 16" x 20" gauge (406 x 1.0) galvanized steel.

Damper Axles: 1/2" (13) diameter plated steel hex.

Damper Linkage: Concealed in frame.

Damper Bearings: Synthetic.

Seals: PVC blade edge seals. Flexible metal jamb seals.

Damper Actuator: Modulating 24V, spring close, external mount.

Transmitter: VELTRON DPT 2500-plus.

Minimum Size: 8" x 6" (203 x 152)

Maximum Size:
Single Section: 48" x 72" (1219 x 1829)
Multiple Section: 144" x 144" (3658 x 3658)

Ratings

System Velocity Range: 0-4000 fpm (0-20.32 m/s)

Maximum System Pressure: 2 in. wg. (0.50 kPa)

Leakage:
3.0 cfm/ft² @ 1.0 in. wg. (0.015 m³/s/m² @ 0.25 kPa)
4.0 cfm/ft² @ 1.0 in. wg. (0.02 m³/s/m² @ 0.25 kPa)
8.0 cfm/ft² @ 4.0 in. wg. (0.041 m³/s/m² @ 1.0 kPa)
9.7 cfm/ft² @ 6.0 in. wg. (0.049 m³/s/m² @ 1.5 kPa)