Timing of Analog input reading

I have an analog (pressure)sensor that takes 7 seconds to power up. It is connected to the 'power out' of the Aquadopp.Now the only timing diagram on reading the analog sensors I have found so far shows that the analog inputs are read 100 mS after the start of the each measurement. This should mean that in my particular case the readings of the analog input are incorrect ?

Best regards,

Cees Meijer

Hi Cees,

The analog sensors are read once every second during the average interval and each reading is done ~100 ms after the second transition. If you use an average interval of 60 seconds you will then get 53 correct readings and 7 invalid readings during the power up sequence. The average value can then be >10% off.

For the Aquadopp Current meter a work around for this problem is to enable the diagnostics measurement and take one diagnostics sample for each measurement. This sample will give you a single reading of your analog sensor that will be correct.

Best regards,

Sven Nylund