I am in the process of building a Quadranger VTOL platform. We have the flight controller flashed with Qground Control Quadranger setup, all other sensors are reading correctly. On the pitot tube, I have attached the straight tube coming from the pitot to the top cone on sensor and the angled pitot tube is connected to the bottom cone on the sensor. I am using an I2C splitter for this, and have tested two of the same model sensors and both keep giving me an airspeed of 12-13m/s. I have tried calibrating numerous different ways including moving sensor to see if it was getting interference, none of these options have worked. The airspeed sensor we bought were holybro from amazon.
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After numerous calibrations failed I decided to disable airspeed circuit breaker then reboot pixhawk, then re-enabled airspeed circuit breaker and did a reboot, let pixhawk sit for a good while and re-calibrated airspeed sensor, it is now reading between 0.4-1.2 m/s.