P
Hi,
I would like to use a differential pressure switch to confirm that a blower is moving air. Please correct me if I am going about this the wrong way, but my plan would be to pipe the positive port on the DP switch into the duct at the blower outlet and to pipe the negative port on the DP switch into the duct at the blower inlet. I'd like to do whatever I can to get the most reliable operation, even at low air flows.
With this in mind, I was wondering what type of static pressure tips or sensors I should mount in my ducts. Looking in a Dwyer catalog, they have what they call "Static Pressure Tips" (part numbers A-489, A-491, & A-493) that look basically like a straight piece of metal tubing that when inserted into the duct would be perpendicular to the air flow direction. (From the picture on Dwyer's website, it appears that the end of these "Static Pressure Tips" is closed, and I don't see any openings along its length, but I cannot guarantee this to be true). Dwyer also has what they call "Static Pressure Sensors" (part numbers A-301, A-302, & A-303) that are shaped in a right angle that would allow me to "aim" the sensor either into or away from the direction of my air flow. These Static Pressure Sensors also have radially drilled sensing holes. I was wondering if these features (or anything else) make these "Static Pressure Sensors" better for my application than the straight "Static Pressure Tip" I described earlier.
If anyone can make a recommendation as to what type of tip or sensor would work best in my application, and if you recommend right-angle style sensors, if you could also recommend how I should aim them, I would greatly appreciate it. I do not have to use Dwyer components if something else will work better - Dwyer just happened to be the first place I looked.
Thanks and best regards,
Paul
I would like to use a differential pressure switch to confirm that a blower is moving air. Please correct me if I am going about this the wrong way, but my plan would be to pipe the positive port on the DP switch into the duct at the blower outlet and to pipe the negative port on the DP switch into the duct at the blower inlet. I'd like to do whatever I can to get the most reliable operation, even at low air flows.
With this in mind, I was wondering what type of static pressure tips or sensors I should mount in my ducts. Looking in a Dwyer catalog, they have what they call "Static Pressure Tips" (part numbers A-489, A-491, & A-493) that look basically like a straight piece of metal tubing that when inserted into the duct would be perpendicular to the air flow direction. (From the picture on Dwyer's website, it appears that the end of these "Static Pressure Tips" is closed, and I don't see any openings along its length, but I cannot guarantee this to be true). Dwyer also has what they call "Static Pressure Sensors" (part numbers A-301, A-302, & A-303) that are shaped in a right angle that would allow me to "aim" the sensor either into or away from the direction of my air flow. These Static Pressure Sensors also have radially drilled sensing holes. I was wondering if these features (or anything else) make these "Static Pressure Sensors" better for my application than the straight "Static Pressure Tip" I described earlier.
If anyone can make a recommendation as to what type of tip or sensor would work best in my application, and if you recommend right-angle style sensors, if you could also recommend how I should aim them, I would greatly appreciate it. I do not have to use Dwyer components if something else will work better - Dwyer just happened to be the first place I looked.
Thanks and best regards,
Paul