Operating Instructions
Oakton® EcoTestr pH2+ Waterproof Pocket Tester
Measurement:
1.Remove cap and press
button to turn on the tester.
2.Dip sensor in at least 20 mm of test solution.
3.Stir gently and wait for the flashing
to stop.
4. |
When pH reading stabilized, the |
will appear on display & user can take |
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the measurement. |
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5. |
Press the |
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button again to switch off tester. |
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Note: Tester automatically shuts off after 8.5 minutes of nonuse to conserve batteries.
Calibration:
1.This tester allows up to 3 Point to Point Calibration.
2.Tester can start with pH 7.00 or pH 4.01 or pH 10.01 buffer.
3.It will exit to Measurement after each calibration and Calibration Point is accumulative.
4.Remove cap and press
button to turn on the tester.
5.Dip sensor in at least 20 mm of pH buffer.
6.Stir gently and press esccal button to start pH calibration.
7. Display will show ‘CAL’ followed by the default pH value & |
will appear on display |
during calibration. |
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8.When the pH reading stabilized, flashing 
will stop.
9.After the
will appear on display, wait for Auto Buffer to lock.
10.After 3 seconds, tester will auto accept or press 
button to manually accept & showing ‘donE’ to confirm the Auto Calibration.
11.To calibrate additional point(s), repeat steps 5-10 using other pH Buffers.
12.To abort pH calibration, press esccal button to escape.
Note: Auto USA buffers are 7.0 pH, 4.0 pH & 10.0 pH; Auto NIST buffers are 6.9 pH, 4.0 pH & 9.2 pH.
Setup Menu (To change setting):
1.Press menu button to enter the Setup Menu and ‘bUFF’ will appear.
2.Press 
button and ‘bUFF USA’ will appear for selection.
3.Press menu button to toggle between ‘bUFF nISt’ & ‘bUFF USA’ for selection.
4.Press 
button to accept & display showing ‘donE’ to confirm the new selection
&return to ‘bUFF’.
5.Press menu button to toggle from ‘bUFF’ to ‘r.SEt’.
6.Press 
button and ‘r.SEt nO’ will appear for selection.
7.Press menu button to toggle between ‘r.SEt nO’ & ‘r.SEt YES’ for selection.
8.Press 
button to accept & display showing ‘donE’ to confirm the new selection
&return to ‘rSEt’.
9.Press menu button to toggle from ‘r.SE t’ to ‘dEg’.
10.Press 
button and ‘dEg C’ will appear for selection.
11.Press menu button to toggle between ‘dEg C’ & ‘dEg F’ for selection.
12.Press 
button to confirm accept & display showing ‘donE’ to confirm the new selection & return to ‘dEg’.
13.Press menu button to toggle from ‘dEg’ to ‘t.CAL’.
14.Press 
button and e.g. ‘25.0’ (default ATC) will appear on 1st Line & flashing ‘25.0ºC’ (Cal. ATC) will appear on 2nd Line.
15.Press menu button to decrease value to the set ATC reading (+/- 5.0ºC/9.0ºF of default ATC).
16.Press 
button to accept & display showing ‘donE’ to confirm the new calibrated ATC reading & return to ‘t.CAL’.
17.Press menu button to toggle from ‘t.CAL ’ back to ‘bUFF’ again. The Setup Menu cycle will repeat.
18.To exit from Setup Menu back to Measurement Mode, press esccal button to escape.
Error Messages:
1.‘
’ – Weak batteries & need replacement soon.
2.‘bAt Lo’ (Low Battery supply) – Tester automatically shuts off without going to Measurement Mode & batteries need immediate replacement.
3.‘StBL Err’ (Stabilizing Error) – Manual confirm of calibration when reading still stabilizing.
4.‘bUFF Err’ (Buffer Error) – Buffer standard out of calibration window.
5.‘SLPE Err’ (Slope Error) – 2nd or 3rd Point calibration where slope is out of the 80% to 120% window.
6.‘Or’ (Over Range) – The pH & ATC temperature reading is above the measuring range of tester.
7.‘Ur’ (Under Range) – The pH & ATC temperature reading is below the measuring range of tester.
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