Hach-Lange HQD - Conductivity probe CDC - Manual (Page 4)

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Measurement
Measurement notes
• Data is stored automatically in the data log when Press to Read or Interval is
selected in the Measurement mode. When Continuous is selected, data will be
stored only when Store is selected.
Before measurement:
The probe must have the correct service-life time stamp. Set the date and time in the meter before attaching the probe.
The probe is factory calibrated and ready for use. For applications that require greater accuracy and precision, perform a
user calibration (
Calibration on page 2 ). Routine calibrations are required.
Tighten the probe locking nut securely when connecting the probe to the meter.
If complete traceability is required, enter a sample ID and operator ID before measurement.
Refer to Push EXIT until the meter returns to the measurement mode. on page 9 for measurement errors.
To display other parameters (TDS, salinity or resistivity), select the CDC401 settings, then select parameter.
To deploy the rugged probe at a distance, toss the probe with a gentle underhand throw. Do not swing the probe by the
cable as this may cause injury to the user, will cause severe strain on the cable, and will shorten the service life of the
probe. Damage under these conditions is not covered by the product warranty.
When using the CDC401 probe with the LDO101 probe to perform auto salinity correction, set the CDC401 probe to
measure salinity. Refer to the LDO101 probe instruction sheet for complete instructions.
1. Connect the
probe to the meter.
2. Rinse the probe
with deionized water
and blot dry with a
laboratory wipe.
3. Put the probe
into the sample so
that the temperature
sensor is completely
submerged.
4. Select Read.
The display will
show Stabilizing...
and a progress bar
as the probe
stabilizes in the
sample.
5. The stabilized
value will
automatically
correct the
measurement to the
selected reference
temperature (20 or
25 °C). Repeat
steps
2. and 3. for
additional
measurements.