Static pressure gauge for blower fans

thingiverse

I purchased a budget-friendly 5015 and 4020 blower fan, but there was no data available on them, so I created this simple device to measure static pressure. Requirements: A power source A transparent house with an inner diameter of approximately 10mm, outer diameter of around 13mm, and length of about 50cm (Biltema 15-314) A rubber band or hair tie to secure the fan to the device Water Tape A pen Nice to have: A multimeter to measure voltage and current Put everything together as shown in the picture. Add a small amount of water, then apply some tape. Mark a dot on the water's surface. Turn on the fan and wait for five minutes because it may take a while for the fan to reach its maximum speed. Draw a new mark on the tape. Measure the distance in millimeters (mmH2O). Multiply this value by 9.80665 to get the pressure in Pascals. Measure the voltage and current. Multiply these values together to get the power consumption in watts. I tested sealing between the fan and the funnel, but I didn't notice any difference, so a slight leak doesn't seem to affect the result much. I chose the 5015 fan for my part cooler solution because of its lower rpm and higher pressure. If you post your blower fan data here, I might create a table for common 3D printer blowers. My fans: Brand: Unknown Model number: Unknown Size: 5015 Flow specification: Unknown CFM Static pressure specification: Unknown Pa Current specification: Unknown A Outlet inside dimensions: 17x12mm No load speed: 4900rpm No load current: 0.16A No load power: 1.92W (Voltage x Current) Speed: 7580 rpm @static pressure Voltage: 12.00V @static pressure Current: 0.14A @static pressure Power: 1.68W @static pressure Static pressure: 7.5mmH2O ~ 74Pa Brand: Pengda Technonoly Model number: Unknown Size: 4020 Flow specification: Unknown CFM Static pressure specification: Unknown Pa Current specification: Unknown A Outlet inside dimensions: 25.5x16.7mm No load speed: 6500rpm No load current: 0.15A No load power: 1.80W (Voltage x Current) Speed: 7780 rpm @static pressure Voltage: 12.00V @static pressure Current: 0.14A @static pressure Power: 1.68W @static pressure Static pressure: 5.0mmH2O ~ 49Pa