EUTECH INSTRUMENTS ALPHA PH 500 - REV 5 Manual de instrucciones Pagina 17

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7 ORP CALIBRATION
mV (ORP) values may be offset at up to ±150 mV to agree with a calibration
solution or an established work standard.
1. Key in the password “011” as per procedure described in Section 5.
2. Controller will blink with uncalibrated mV output of your electrode.
3. Determine the mV value of your solution with an accurate meter (such as the
pH 6).
4. Press the or keys to offset the mV value on the controller display to
match the value of the solution you are measuring.
5. Press ENTER. The display flashes “DONE”. Press ENTER again to return to
measurement mode.
NOTE: You can view the mV offset in the Setup program, P5.0.
180
2
0
0
d
o
n
e
ENTER
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