Hach-Lange HQD - BOD LDO Probe LBOD - Manual (Page 6)

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Maintenance
General maintenance
• Rinse the probe with water to clean. The stirrer does not need to be removed.
• Do not scrub the sensor cap or lens.
• Do not handle the face of the sensor cap.
• Do not use organic solvents on the sensor cap.
• High concentrations (over 1 molar) of bases or acids will decrease the service life of
the sensor cap.
Replace the sensor cap and iButton ®
1. Remove the used sensor cap. Pull straight down on the rubber sides of the cap.
Discard the used sensor cap. Do not touch or soil the exposed, clear sensor lens with
oils from fingers.
Note: If the sensor lens is soiled, rinse with dilute isopropyl alcohol (10% or less) or deionized
water and blot dry with a non-abrasive cloth. Do not wipe the lens or use abrasive cleaners.
2. Push the new sensor cap on the probe until the rubber seal is firmly against the
sensor cap. Make sure the rubber seal is firmly seated.
1. Connect the
probe to the meter.
2. Rinse the probe
with deionized water
and blot dry.
3. Put the probe in
the sample. Engage
the stir paddle by
pushing the button
on the top of the
probe.
4. Select Read.
The display will
show Stabilizing...
and a progress bar
as the probe
stabilizes in the
sample.
5. Record the
value. Turn off the
stir paddle.
6. Remove the
probe from the BOD
bottle. Be careful
not to catch the stir
paddle on the inside
lip of the BOD
bottle. Carefully
install the stopper
into the bottle.
7. Repeat steps 2.
to 6. for additional
measurements.