Proceed to air data computer section for a description of the required hardware software to operate your pitot. Now your probe is ready to be fitted with the sensors. With a pillar drilling machine and a 1 mm dia bit make the total pressure hole, the farthest from the pitot head, with a deep of 13 mm the other hole should be drilled 10.5 mm deep.Ī figure of drilling is reported in Figure 9.ĭuring the drilling process check if the drill has broken through the pipe wall blowing into the total or static ports. If the head is airtight you can proceed to the final assembly phases, every time you make a new glued joint it’s a good practice to check the airtightness.Īfter the assembly only two operations are left, they are the pressure taps drilling. The resin should not enter the pipe (Figure 6).Īs the resin has a medium viscosity keep turning the pipe until you finally put in into the pitot head and then leave it to cure (Figure 7).Īfter the resin is cured remove the electrical tape and you should get the result in Figure 8.Īfter that this crucial part is completed test the if the joint is airtight, ahead of the assembly will be impossible to correct any defect. All the required parts are depicted in Figure 3.įigure 3: All the parts needed for the pitotĬover your working plane with white paper, mix few grams of epoxy resin and with a toothpick lay a generous amount of resin at about 4 mm from the pipe tip, just like the picture below. Given L as the total assembled length, the 8 mm pipe finished length should be then L-27mm and the 3 mm pipe length equal to L-12mm, in the Figure 2 L=200 mm so 8 mm pipe is 173mm and 3 mm pipe is 188mm. The length of 8 mm pipe and total pressure 3 mm pipe should be adapted to the desired finished pitot length as follow. Reference Temperature and Pressure (4 options available) Classical STP 0 C, 1 Atm. Other parts still the same of the classic probe, static pressure pipe is not needed anymore. When paired with a Pitot tube this differential pressure transmitter.
#Using a pitot tube at stp download#
In Figure 1 the finished pitot flange, you download a 3D model for the pitot flange here. Orifice Plate Venturi Tube Flow Tube Flow Nozzle Pitot Tube. A workaround for this issue is to build a flange that can route air to a standard barbed port, so a new design was put to test. Flow measurement is an important process with diverse applications like measuring the. The use of the two brass pipes as impulse lines is simple but they can’t be trimmed near the pitot body, if they are shortened or bent around likely they will leak or break away, therefore overall dimensions are considerable. stl file of the assembled probe, check the animation of the model.
To speed up your work you can find here a 3D. Figure 1: Pitot flange with barbed ports Assembly indicationsĪfter prolonged use of the standard 8 mm pitot tube some installation problems have been reconsidered and solved, so now the classical model can be suited with a fixation flange.