Duct Static Pressure Sensor Location

For the longest time i never questioned this logic.

Duct static pressure sensor location.

Duct static sensors a300 series rps sd 01 21121 60681. Run two 1 4 inch sensing lines high and low to the sensing location. As the zone dampers throttle back the duct pressure rises and the fan is controlled to reduce the duct pressure. So you might select 2 3 of the physical distance down that duct.

Once the sensor is installed you could fine tune the set point there as necessary to ensure that you had adequate pressure everywhere else. Locate the static pressuresensor for modulatingfan. 325 pa in this example can be as low as possible. Kele overview 24 product categories line card 300.

Duct static pressure transmitter. The sensor is field installed and the controller is set to maintain the duct. Two thirdsthe distancefrom the supply fan to the end of the. Location mount the static pressure probe on the duct plenum or air handler to allow exposure to the average airflow.

The most commonly recommended static pressure sensor location is a point in the supply duct at which the duct static pressure at design flow is approximately two thirds of the duct static pressure drop from the fan outlet to the terminal unit inlet. Sensors located above a ceiling tend to get lost and forgotten. Is there a reset schedule for the duct static pressure. In many systems the first locationis.

Capacity out in the supply duct system not at the fan. More who we are. Duct static pressure duct static pressure set point zone damper position signal. The pressure is measured by the sensor p located approximately 2 3rdof the way down the main duct starting air handling unit.

Is the static pressure set point too high or too low. When analyzing the static pressure the trends to look for include. The normal range for duct static pressure is from 0 75 in. Choose a static pressure sensor that allows the hvac controller to operate in the upper half of the sensor s normal operating range.

Locate the static pressure sensor at the panel. Air pressure sensors surge dampeners. Avoid locations where air stratification can cause changes in airflow. Multi range differential zone pressure transmitters.

The recommended frequency of data collection is between 5 and 30 minutes. For the longest time i have been told and have seen in the field static pressure sensors controlling vortex or vfd located at the fan discharge or downstream of the duct before any take offs. Expect some field adjustmentto be requiredto find.