Hach sension 6, Инструкция

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3
DISSOLVED OXYGEN PROBE,
continued
General Probe Operation
Follow the procedures presented in this section to obtain maximum
performance and accuracy from your DO probe:
•
Use the DO probe only for aqueous applications.
•
Take extra care when handling and storing the oxygen membrane
module cap.
•
Do not allow the DO probe’s sensing area (cap reservoir) to dry out.
•
Perform the calibration procedure at the beginning of each day for
maximum performance. Recalibrate the DO probe every two hours
for maximum accuracy.
The DO probe can be left out of solution for up to 24 hours without
damage. If the DO probe is not being used for more than 24 hours,
prevent electrolyte evaporation by storing it in the storage/calibration
chamber. Refer to the meter instruction manual for more information on
probe storage.
Probe Polarization
Note: Prior to
operation, connect the
probe to the meter.
Allow the probe to
stabilize for 30-50
minutes before
attempting
a calibration.
Hach dissolved oxygen probes are continuously polarized when they
are connected to the instrument. A steady reading will not be seen for
30–50 minutes when the probe is new or when it has been unplugged
for more than an hour. Interrupted connections of less than one hour
will require 5–25 minutes before stabilizing. Refer to the sens
ion
6
Dissolved Oxygen Meter Instruction Manual for additional information.
Probe Calibration
Detailed instructions for calibrating the Dissolved Oxygen Probe using
a Water-saturated Air or Winkler Titration method are presented in the
sens
ion
6 Dissolved Oxygen Meter Instruction Manual. Perform a
calibration procedure at the beginning of each day for best performance.
Obtain maximum accuracy by recalibrating the probe every two hours.