Single and dual input analyzers for pH/Redox (ORP)
AX416, AX436, AX460, AX466 & AX468 4Setup
IM/AX4PH Rev. P 27
4.1.6 Grab Calibration (pH Only)
Sensor A: Buffer Method (pH probes only)
Select Grab calibration method.
Adjust Value
ph and Adjust are shown alternately on the upper display line. The displayed pH value
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 and keys to adjust the
displayed value (in 0.01 pH increments) to match the pH value of the measured grab
sample.
Notes.
If the displayed value is adjusted by more than ±3pH, WARNING - OFFSET is
shown on the lower display line. If the measured grab sample value is correct
and the analyzer reading has not been over-adjusted, clean the electrode, check
the sensor connections and try again.
If the displayed value is adjusted by ±5pH, OUT OF RANGE is shown on the
lower display 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
Set Min Slope – Section 5.3) and 105 %, is
displayed.
pH check value.
The value generated during the last valid two-point calibration, adjusted by the value
applied in Adjust Value (above), is displayed.
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 calibration.
Probe Type for Sensor B (dual input analyzers only) set to Redox or ORP and Enable
Cals.
set to No (Section 5.3) – return to top of page.
Alter Sec. Code not set to zero (Section 5.8) – see Section 5.1, page 28.
Alter Sec. Code set to zero (Section 5.8) – see Section 5.2, page 29.
A: Adjust Value
9.18
pH
25.0
Deg.C
Sensor Cal. A
A: Slope & Check
100.0
%
7.00
pH
A: Buffer Method
-----
Grab
SECURITY CODE
CONFIG. DISPLAY
Sensor Cal. B
SENSOR CAL.
To Next Page
Loading...
Need help?
General
