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Macro 900 Operation Manual
To Calibrate the 100% Saturation Point in Damp Air
1. After calibrating with MacroCal,
remove
the
bottle, wash in fresh water, then
shake off ensuring there are no
droplets adhering to the DO
membrane.
2. Moisten a clean cloth or piece of
tissue paper with fresh water
and wrap it around the open end
of the probe ensuring all the
holes are covered. Place the
probe on a flat surface. Do not
hold the probe, the heat from
your hands will warm the probe up and interfere with calibration.
3. Wait until the temperature measurement is
very
important.
4. Referring back to the screen shown in item 5 above, select DO 100%.
5. Wait while the Macro 900 Meter carries out the calibration procedure.
6. When the 'Calibrating 100%' screen (shown above) is displayed, press OK
then ESC repeatedly to return to normal reading mode.
10.4. Calibration Error Messages
If the Macro 900 Meter detects a problem with either the MAP 2000/2100 or the
calibration solution during the calibration procedure, an error will be indicated.
The chart below shows the possible errors and how to correct them.
Error
Message
REPLACE DO
Full re-calibration required or Optical
CAP
DO Cap needs replacing
BATTERIES
Battery Voltage is too low for reliable
TOO LOW
calibration
NO PROBE
The Probe is not responding
RESPONSE
READINGS
Readings did not stabilise within the
UNSTABLE
expected period
OUT OF CAL
Readings are outside calibration limits
RANGE
(can be caused by low level / incorrect
calibration solution). Or the Probe
Sleeve is not fitted
OUT OF
Temperature is outside 5°C – 40°C
TEMP RANGE
limit
© 2013 Palintest Ltd.
Probe
from
the
Problem
www.palintest.com
completely stable. This is
Action
See note below.
Replace the batteries
Check connections/cycle
power
Top up/replace the MacroCal
Allow longer for
stabilisation.
Top up/check calibration
solution is correct type.
Ensure the Probe Sleeve is
fitted
Warm/cool the MacroCal
V3
Page 31 of 147
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Troubleshooting
