Battery Management
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Method-Specific Guidelines
Marine Ammonia
• Prepare sample cuvette immediately after collecting sample from tank. Ammonia is volatile and will
dissipate if stored in a bottle before analysis, causing low measurements.
Marine Magnesium
• Keep the tips with their appropriate syringes during measurement.
• Measure liquids accurately by syringe by drawing up the plunger until the bottom seal
of the plunger is at the desired volume mark. Do NOT raise the liquid to the mark as
this will give a false high volume. An air gap between the plunger and liquid is normal.
See image at the right.
• Always use clean, dry cuvettes and syringes/tips.
• Rinse with deionized (RODI) water only; never rinse with tank water.
• Dry the cuvettes before use to prevent dilution.
• Clean the syringes and tips before storage.
6.6. BATTERY MANAGEMENT
The meter will perform an auto‑diagnostic test when it is powered on. During this test, the Hanna Instruments
®
logo will appear on the LCD. If the auto‑diagnostic test was successful, the meter is ready for use.
To conserve the battery, the meter turns off automatically after 15 minutes of inactivity.
If a zero reading has been done but not a Read, auto‑off time is increased to 30 minutes.
The battery icon on the LCD indicates the battery status:
Battery is full.
Battery is below 10 %.
Replace batteries soon.
Battery is low.
Replace batteries with new ones.
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