4. Entering A Known Slope Value - pH
S
lope calibration with manual entry
of known slope value
1. To Auto Calibrate the pH loop using
2 point buffer calibration with auto
buffer recognition, select Auto Buffer
and follow the step-by-step proce-
dures displayed on-screen.
2. To Manual Calibrate the pH loop
using 2 point buffer calibration with
manual buffer value entry, select Manual Buffer and follow the step-by-step procedures
displayed on-screen.
3. To Standardization Calibrate the pH loop using 1 point buffer calibration with manual
buffer value entry, select Standardize and follow the step-by-step procedures displayed on-
screen.
4. To Calibrate the pH loop using with manual entry of a Known Slope Value and Reference off-
set value, select Slope/Offset and follow the step-by-step procedures displayed on-screen.
10.3 ORP Calibration
For process control, it is often important to make the measured ORP agree with the ORP of a
standard solution. During calibration, the measured ORP is made equal to the ORP of a
standard solution at a single point.
To calibrate the ORP loop with a connected ORP sensor, access the Calibration screen by
pressing ENTER/MENU from the main screen, select S1 or S2 Measurement and press
ENTER/MENU. Press INFO at any time to
learn more about this procedure. A yellow
screen will appear with detailed
instructions and information.
The following calibration routine is
covered:
1. To Standardization the ORP loop
using 1 point buffer calibration with
manual buffer value entry, follow the
step-by-step procedures displayed
on-screen.
76 Calibration
Section 10: Calibration Instruction Manual
April 2017 LIQ-MAN-56
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