Single and dual input analyzers for pH/Redox (ORP)
AX416, AX436, AX460, AX466 & AX468 4Setup
IM/AX4PH Rev. P 25
4.1.5 Manual, Single- and Two-Point Calibration (pH Only)
Sensor A: Buffer Method (pH probes only)
Select the type of manual calibration required:
Man 1-Pt
Man 2-Pt
–
–
Manual, single-point calibration
Manual, two-point calibration
Set Buffer Temperature
Deg.C (or Deg.F) and Adjust are shown alternately on the center display line. Use the
and keys to adjust the displayed temperature value to the required buffer
temperature (–20 to150 ºC or –4 to 302 ºF).
Note. If A: Buffer Method is set to Man 2-Pt, the temperature selected is used for both
buffers.
Calibrate Buffer
(Single-Point Calibration) or Calibrate Buffer 1(Two-Point Calibration)
Immerse Sensor A in the buffer solution.
pH and Adjust are shown alternately on the upper display line. Use the and
keys to set the displayed pH value to the temperature-corrected pH value of the
chosen solution (see the data sheet provided with the solution).
Press the key to initiate calibration.
Note. To abort calibration, press the key again at any time before calibration is
complete – see below.
Measured pH value from the last successful calibration.
Measured sensor output in millivolts.
When the measured sensor output stabilizes, press the key to accept the
calibration.
Cal. Accepted is shown for 2 seconds to confirm that the calibration has been
accepted, the display then advances automatically to the next frame.
The display then changes for 2 seconds to show the temperature-corrected buffer
value in the upper display line, then advances automatically to the next frame.
Two-point calibration selected – continued on next page.
Single-point calibration selected – continued on next page.
Abort Calibration
Select Yes or No.
Yes selected – return to the main menu.
No selected – calibration continues.
4.01
175
mV
A: Immerse Buf.2
A: Calibration
A: Abort Cal.
-----
Yes
A: SENSOR CAL.
A: Immerse Buf.2
A: Immerse Buf.1
4.00
pH
Deg.C
25.0
A: Buffer Method
Man
-----
1-Pt
A: Cal. Buffer 1
4.01
pH
A:Set Buf. Temp.
Deg.C
20.0
pH
Press button
when stable
A: Cal. Accepted
4.01
pH
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