Duct Static Pressure Sensor Location

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.

Duct static pressure sensor location.

When analyzing the static pressure the trends to look for include. This will allow for effi cient operation figure 1 even if the reset logic has failed due to a rogue zone or other problem. More who we are. Air pressure sensors surge dampeners.

325 pa in this example can be as low as possible. Locate the static pressuresensor for modulatingfan. The normal range for duct static pressure is from 0 75 in. Once the sensor is installed you could fine tune the set point there as necessary to ensure that you had adequate pressure everywhere else.

Duct static pressure transmitter. Two thirdsthe distancefrom the supply fan to the end of the. So you might select 2 3 of the physical distance down that duct. Run two 1 4 inch sensing lines high and low to the sensing location.

For the same reason the static pressure sensor should be located as far out into the duct system as is practical so that the high end of the setpoint range 1 3 in. Multi range differential zone pressure transmitters. Location mount the static pressure probe on the duct plenum or air handler to allow exposure to the average airflow. Sensors located above a ceiling tend to get lost and forgotten.

The pressure is measured by the sensor p located approximately 2 3rdof the way down the main duct starting air handling unit. The recommended frequency of data collection is between 5 and 30 minutes. Kele overview 24 product categories line card 300. Is the static pressure set point too high or too low.

Capacity out in the supply duct system not at the fan. 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. In many systems the first locationis.

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. As the zone dampers throttle back the duct pressure rises and the fan is controlled to reduce the duct pressure. Duct static sensors a300 series rps sd 01 21121 60681. I would pick a point in the longer duct because that is more likely to be the duct run that set the fan system static.

Duct static pressure duct static pressure set point zone damper position signal. The sensor is field installed and the controller is set to maintain the duct. Is there a reset schedule for the duct static pressure.