Error reading PH meter SEN0161
Hendrik Alfendo 2016-08-03 20:37:39 2394 Views2 Replies Hello, i bought pH meter last week. I connected to arduino uno. When i tried to measure ph in acid water ph < 5, in serial monitor showed value 6.8-7.0. Same with alkali water ph > 8. same value showed in serial monitor around 6.8-7.0. When i cleaned up the probe, ph meter still showed some value. Pls help me thx
2016-08-04 22:06:26 
So it seems both the pH meter and the pcb adapter are defective if your wiring and code were all right. Looking forward your picture. Leff
So it seems both the pH meter and the pcb adapter are defective if your wiring and code were all right. Looking forward your picture. Leff 2016-08-04 09:20:52 i did same with the guide nothing wrong with wiring and code. I did compare with my friends ph meter SEN0161. His sensor can get accurate value. once i get into my class, ill post my sensor pic here. oh also, i did plug my ph probe to my friend's adapter still got error value and i did to the adapter, plug friend's ph probe to my adapter and got error value too. Hendrik Alfendo
Hendrik Alfendo 