Three-Point Calibration; Point 2 - palintest Macro 900 Operation Manual

Macro 900 Operation Manual
16.4.2.

Three-point Calibration

During three-point calibration, the MAP 2000/2100 and Macro 900 Meter must
remain switched on. If the Macro 900 Meter is switched off between points, the
calibration process will be aborted and must be re-started from point 1. To
calibrate the ISE electrode follow these steps:
Point 1.
1. Remove the storage cap from the pH electrode, wash the Probe in
distilled water, dry the probe thoroughly then drop the Probe in to the
warm 10ppm solution.
2. Switch the Macro 900 Meter on and stir the probe until the temperature
and NH4 readings are completely stable. A minimum of five minutes is
recommended.
3. Ensure the temperature of the solution is between 20ºC and 40ºC (68ºF -
104ºF).
4. Press the MENU key then select Calibration. The following screen will be
displayed.
5. Select Full Cal. The screen will change to:
6. Select Aux Electrodes. The screen will change to:
The Ammonium (NH4) electrode should have been assigned to AUX
socket 2 when it was fitted. Move the pointer down to 2:NH4 then
press the OK or right arrow key to select.
7. The screen will change to:
Calibration point 1 (Pt-1) is the warm 10ppm point. Calibration point 2
© 2013 Palintest Ltd.
Calibration
MacroCal
DO 100%
Full Cal
Calibration
pH/ORP
DO/EC
Aux Electrodes
SELECT ELECTRODE
1:TURB l 4:N/A
2:NH4 l 5:N/A
3:N/A l 6:N/A
CALIBRATE NH4
Pt-1? [01/Jan/12]
Pt-2? [01/Jan/12]
Pt-3? [01/Jan/12]
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