Forum >PH Meter v1.1 - Measurement jumping by +/-1.0 in Aquarium
PH Meter v1.1 - Measurement jumping by +/-1.0 in Aquarium
marieschreiber84 2018-10-24 13:33:31 1773 Views1 Replies Hi,
i've connected the PH Meter v1.1 to an Arduino Uno and calibrated it according to this manual:
https://www.dfrobot.com/wiki/index.php/ ... KU:SEN0161
I get a stable PH reading in a Glass of Water but when I put the probe in my Aquarium the reading is jumping up and down by 1.0 constantly (my PH-Pen gives me a stable reading).
Any ideas on why that could be happening ?
i've connected the PH Meter v1.1 to an Arduino Uno and calibrated it according to this manual:
https://www.dfrobot.com/wiki/index.php/ ... KU:SEN0161
I get a stable PH reading in a Glass of Water but when I put the probe in my Aquarium the reading is jumping up and down by 1.0 constantly (my PH-Pen gives me a stable reading).
Any ideas on why that could be happening ?
2018-10-26 02:49:42 i raised the Number of Samples from 40 to 400 to stabilize the reading successfully.
But even it is nearly perfectly calibrated with 7 and 4 Buffer-Solutions it is still off by 0.3 in a 4.9 solution compared to my PH-Pen. marieschreiber84
But even it is nearly perfectly calibrated with 7 and 4 Buffer-Solutions it is still off by 0.3 in a 4.9 solution compared to my PH-Pen.
marieschreiber84 