10
To take measurements, connect the DO probe to the meter securely by
aligning the pins with the socket located on the top of the meter, pushing
the plug in and tightening the threaded ring.
Probes shipped from Hanna Instruments are dry. To hydrate the probe
and prepare it for use, connect it to the meter and proceed as follows:
1. Remove the red and black plastic cap. This cap is for shipping
purposes and can be thrown away.
2. Wet the sensor by soaking the bottom 2
1
/
2
cm (1’’) of the probe in
electrolyte (
HI7041S
) for 5 minutes.
3. Rinse the membrane cap (
HI76407A
) supplied in the kit with the
meter with electrolyte solution while shaking it gently. Refill with
clean electrolyte solution.
4. Tap gently the sides of the membrane cap with your finger tip to
ensure that no air bubbles are trapped. To avoid damaging the
membrane, do not tap it directly on the bottom.
5. Make sure that the rubber O‑Ring sits properly inside the membrane
cap.
6. With the sensor facing down, slowly screw the cap clockwise. Some
electrolyte will overflow.
When not in use and during polarization (see PROBE CONDITIONING
page 11), use the protective transparent cap supplied in the kit with
the meter.
PROBE CONNECTION AND PREP
ARA
TION
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