Hach-Lange HQD - Conductivity probe CDC - Manual (Page 2)

2 DOC272.53.80022
Calibration
Figure 1 Conductivity probe overview
1 Temperature sensor and 4-pole graphite design
conductivity cell 3 Rugged probe (5, 10, 15, or 30 meter cable)
2 Shroud (rugged model) 4 Standard probe (1 or 3 meter cable)
Before calibration:
The probe must have the correct service-life time stamp. Set the date and time in the meter before attaching the probe.
It is not necessary to recalibrate when moving a calibrated probe from one HQd meter to another if the additional meter is
configured to use the same calibration options. If the additional HQd meter uses different calibration options (e.g. calibration
standards or acceptance criteria), calibrate the probe or change the method settings to select a different method.
Tighten the probe locking nut securely when connecting the probe to the meter.
The meter will automatically correct the calibration measurement to the selected reference temperature (20 or 25 °C) using
the default NaCl-based, non-linear temperature coefficient. Settings can be changed in the CDC401 calibration options.
If any two probes are connected, push the UP arrow to change to the single display mode in order to show the Calibrate
option.
Use the conductivity standard solution on the Calibration screen or change the standard in the CDC401 Calibration Options
menu.
A new method can be created if custom calibration or measurement settings are desired.
Refer to Push EXIT until the meter returns to the measurement mode. on page 9 for calibration errors.
Stir gently. Avoid resting the probe on the bottom or sides of the container.
Do not dilute conductivity standards and samples.