Grab Calibration (Ph Only) - ABB AX416 User Manual

...4.1 Sensor Calibration

4.1.6 Grab Calibration (pH Only)

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Grab
A: Buffer Method
9. 1 8
pH
25. 0
Deg.C
A: Adjust Value
100. 0
%
7. 0 0
pH
A: Slope & Check
Sensor Cal. A
Sensor A: Buffer Method (pH probes only)
Select Grab calibration method.
Adjust Value
and are shown alternately on the upper display line. The displayed pH value
ph Adjust
is the reading sampled by the analyzer as this frame is selected and is held until the
display is advanced to the next frame. Use the
value (in 0.01pH increments) to match the pH value of the measured grab sample.
Notes.
• If the displayed value is adjusted by more than 3pH,
the lower display line. If the measured grab sample value is correct and the analyzer
reading has not been overadjusted, clean the electrode, check the sensor connections
and try again.
• If the displayed value is adjusted by 5pH,
line, indicating that maximum adjustment has been reached. Further adjustment is not
possible.
Slope Value
% slope value.
The value generated during the last valid two-point calibration, between the programmed
minimum % slope value (see
pH check value.
The value generated during the last valid two-point calibration, adjusted by the value
applied in (above), is displayed.
Adjust Value
Note. The pH check value is reset to the previous, valid check value if a single- or two-
point calibration is carried out after a grab calibration.
Sensor B calibration (dual input analyzers only) is identical to Sensor A
Sensor Cal. B
calibration.
for Sensor B (dual input analyzers only) set to
Probe Type
SENSOR CAL.
set to
Enable Cals.
SECURITY CODE Alter Sec. Code
Alter Sec. Code
CONFIG. DISPLAY
and
OUT OF RANGE
– Section 5.3) and 105%, is displayed.
Set Min Slope
(Section 5.3) – return to top of page.
No
not set to zero (Section 5.8) – see Section 5.1.
set to zero (Section 5.8) – see Section 5.2.
4 SETUP
keys to adjust the displayed
WARNING - OFFSET is shown on
is shown on the lower display
or
Redox ORP and
27