American merine pH Pinpoint Monitor

[erictanyh]

Hi all sifu.... I just got the new American merine pH Pinpoint Monitor for my FOWLR marine tank, after i did the 7 and 4 calibration a few times and put into the tank, i noticed that the reading is quite fluctuated....

My problems are :

1) By using the AC adaptor, the reading fluctuarate between 7.51 and 7.78, these show lower ph value if i use the 9v batterry which show the reading 7.75 and 7.92...... why the reading is so different by using AC power and 9V battery....??

2) Is the monitor reading normal if the 1st decimal point fluctuarate between 7.7 and 7.9...?? I beleive that it is normal if the reading of second decimal point is fluctuarating loh...... Please help and advice....... Thanks...!!

[erictanyh]

Hi all sifu.... I just got the new American merine pH Pinpoint Monitor for my FOWLR marine tank, after i did the 7 and 4 calibration a few times and put into the tank, i noticed that the reading is quite fluctuated....

My problems are :

1) By using the AC adaptor, the reading fluctuarate between 7.51 and 7.78, these show lower ph value if i use the 9v batterry which show the reading 7.75 and 7.92...... why the reading is so different by using AC power and 9V battery....??

2) Is the monitor reading normal if the 1st decimal point fluctuarate between 7.7 and 7.9...?? I beleive that it is normal if the reading of second decimal point is fluctuarating loh...... Please help and advice....... Thanks...!!

No one use this device....???

[hammy]

Hi all sifu.... I just got the new American merine pH Pinpoint Monitor for my FOWLR marine tank, after i did the 7 and 4 calibration a few times and put into the tank, i noticed that the reading is quite fluctuated....

My problems are :

1) By using the AC adaptor, the reading fluctuarate between 7.51 and 7.78, these show lower ph value if i use the 9v batterry which show the reading 7.75 and 7.92...... why the reading is so different by using AC power and 9V battery....??

2) Is the monitor reading normal if the 1st decimal point fluctuarate between 7.7 and 7.9...?? I beleive that it is normal if the reading of second decimal point is fluctuarating loh...... Please help and advice....... Thanks...!!

not normal to have fluctuating value for both decimal place... maybe the second decimal will jump once in a while when te value is changing...depending how u calibrate... if you caliberate with battery, stick to battery reading, if u caliberate with AC power reading, then stick to tha too

[erictanyh]

Got the answer liow....... hope can help others......

" Other electrical devices causing interference with the display monitor. The most common culprit is high frequency electronic ballasts" Anyway, Thanks to hammy!!

[m12345y]

Got the answer liow....... hope can help others......

" Other electrical devices causing interference with the display monitor. The most common culprit is high frequency electronic ballasts" Anyway, Thanks to hammy!!

so the solution is to move the monitor far away from the e ballast or the probe? plan to get one too

[erictanyh]

Yes, many forumer faced this problem and many LPS even don't know about this...... you need to relocate the monitor not the probe far away from any electric devices. Remember don't buy the 9v AC adaptor too, it will cause the same problem too.....