Hanna Instruments HI520 - Measuring with Optical DO Probes; Probe Preparation & Conditioning

Measuring with Optical Dissolved Oxygen (DO) Probes 148
24. MEASURING WITH OPTICAL DISSOLVED OXYGEN (DO) PROBES
24.1. PROBE PREPARATION & CONDITIONING
Note: Read all the steps prior to starting probe preparation.
1. Invert the probe so the cable faces the floor.
2. Remove the protective cap.
3. Locate the O‑ring that sits on probe body.
Sparingly lubricate with a thin film of supplied grease. Use care to prevent grease/fingerprints from
contacting the optical window.
4. Remove the Smart Cap from the container.
5. Align the notched cutout arrow on the Smart Cap with the matching guide on the probe body.
6. Slide and press the Smart Cap onto the probe’s body until the cap snaps in place.
Once the cap is installed, it should not be removed unless a new cap is required.
7. Place the probe in purified water for a minimum of 2 hours to hydrate the Smart Cap before use.
Notes:
If the probe is not installed immediately, place in a calibration/storage vessel with fresh water to protect it
from damage and hydrate the Cap.
Prior to probe initialization, verify time and date are configured correctly in General Setup Menu.
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DETAIL
1. Smart Cap
2. Alignment key
2. Sensor body
4. Temperature sensor
5. Embedded O
2
sensitive
luminophore with black
protective layer
6. RFID Tag
7. Optical window
8. O-Ring Seal
1 Smart Cap
2 Alignment key
3 Probe body
4 Temperature sensor
5
Embedded O
2
sensitive luminophore
with rugged, insoluble
oxygen‑permeable protective layer
6 Communication tag
7 Optical window
8 O‑ring seal
Figure 70: Smart cap detail (HI7640‑58 industrial optical DO)