AquaMetrix Aqua-Check, Operator'S Manual

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16 Aqua-Check Water Analyzer Operator’s Manual
Rev. 2.1
3. The top line of the display will then read “Cnd 1 cal 73.9 uS”. The
[UP]
and
[DOWN] keys can be used to alter the calibrator value to match the standard.
Range 1 requires a conductivity standard between 50 and 99 µS/cm for proper
calibration. The conductivity sensor and thermistor should be completely
immersed.
4. When the displayed ADC value stabilizes, press the [STORE] key to save the
calibration information. If you press the [ENTER] key, you will skip the
calibration of this conductivity range.
After range 1 has been calibrated or skipped, a prompt will be displayed to cali-
brate each of the other three ranges in a similar fashion. Each range requires a
different standard solution. The conductivity of standard 2 should be between 500
and 990 µS/cm, standard 3 between 5.0 and 9.9 mS/cm, and standard 4 between 50
and 99 mS/cm. (Conductivity standards provided in the Water Analyzer calibration
kit are 73.9 µS, 717 µS, 6.66 mS, and 58.6 mS.)
Conductivity standards are not buffers. Dilution or contamination will affect their
conductivity value. After a solution has been used to calibrate a conductivity range,
discard it.
After the fourth conductivity range has been calibrated, the meter will resume
displaying the measured values for temperature, pH, conductivity, and dissolved
oxygen.
Review Log
The Review Log Mode allows measurements previously stored in the measurement
log to be viewed.
To review the stored readings:
1. Press the [MODE] key to access the Mode menu.
2. Press either the
[UP]
and [DOWN] key to reach the “Review Log” prompt.
3. Press the [ENTER] key to activate the Review Log Mode.
4. The
[UP]
and [DOWN] keys can be used to step through the list of numbered
log entries. When all of the log entries of interest have been examined, press
the [MODE] key to return to the Mode menu.