Calibrating Point 2 - palintest Macro 900 Operation Manual

Macro 900 Operation Manual
Calibration point 1 (Pt-1) is the Zero point. Calibration point 2 (Pt-
2) is the upper calibration point.
The dates shown to the right of each point are the dates of the last
successful calibration.
7. Select Pt-1. The screen will change to:
The Meter will wait until the readings are stable, then it will send
the calibration command to the Probe, where the calibration takes
place. During calibration, the Calibrating screen is displayed and the
progress counter counts up. If the calibration is successful, the
counter will reach 100% and the following screen will be displayed.
The Calibration Report on the top line displays the voltage output
from the probe in millivolts (mV).
memory so should be noted down in a calibration record book for
the probe.
15.2.7.

Calibrating Point 2

Remove the Probe from the calibration bottle, shake off any excess water then
dry the outer sleeve with a soft cloth.
Fill a calibration bottle with freshly mixed Rhodamine calibration solution and
drop the Probe in all the way. Again, bang the Probe against the bottom of the
bottle several times in order to remove any air bubbles that may be clinging to
the probe.
Follow the procedure detailed above for Zero point calibration as far as step 6,
then select Pt-2. Wait while the Meter stabilises and calibrates.
After successful calibration, the 'Calibrating 100%' screen will be displayed
along with the Calibration Report, which will show the voltage output from the
probe in millivolts (mV).
Macro 900 Meter directly after calibration should be approximately 70,000
cells/L at 20ºC (this value will vary with temperature).
© 2013 Palintest Ltd.
PLEASE WAIT
Stabilising
000%
Offset:2500mV
Calibrating
100%
Press [OK]
Press the OK key to continue. The reading on the
www.palintest.com
This value is not stored in
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