Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA www.hannainst.com
HI981520 Marine Monitor pH, Marine Salinity, and Temperature
Quick Reference Guide
All Hanna instruments conform to the CE European Directives and UK standards, and our
production facilities are ISO 9001 certified. HI981520 is warranted for a period of two
years and pH probe for six months against defects in workmanship and materials when
used for their intended purpose and maintained according to instructions.
For technical information e‑mail us at tech@hannainst.com.
Visit www.hannainst.com for more information about Hanna Instruments and our products.
Please retain for future use. QR981520 11/22
Please scan the QR code or follow the link to download
the user manual.
https://manuals.hannainst.com/HI981520
Hanna
®
is committed to developing and deploying digital solutions
with a positive impact on the environment and climate.
Dear Customer,
Thank you for choosing Hanna Instruments.
The HI981520 Marine Monitor is the ideal solution for aquarists looking to continuously monitor salinity levels in their aquariums.
Application: monitoring salinity in saltwater aquariums, seawater, or aquaculture
Package Contents
• HI981520 monitor with attached EC & temperature probe
• HI1286 replaceable pH electrode
• pH 7.01 buffer solution, 20 mL (2 sachets)
• pH 10.01 buffer solution, 20 mL (2 sachets)
• 35.00 ppt salinity calibration solution, 20 mL (2 sachets)
• Electrode cleaning solution, 20 mL (2 sachets)
• Suction cup (2 pieces)
• Self‑adhesive strip (2 pieces)
• 12 VDC power adapter
• pH electrode quality certificate
• Quick reference guide with instrument quality certificate
Main Features
• Two Alarm operating modes (High / Low Value) for each supported parameter
• High / Low Alarm generated when measured value exceeds or drops below
configured parameter High / Low Value
• Acoustic signal generated each time an alarm is triggered
• EC probe contains an integral temperature sensor that simplifies installation
• All readings are compensated for variations in temperature
Brief Operational Overview
• Use supplied strips to mount the Monitor (optional).
• Slide the connector sheath down and connect the pH electrode to the BNC
socket. Slide the sheath up and ensure connector is covered.
• Connect the power adapter to the instrument and plug into the mains.
• Press
t to enter Setup.
• Press
e to enter edit mode.
• Press
a / v to navigate menu and configure the operating limits
of the process.
• Remove the pH electrode protective cap and place both the pH electrode and
the EC probe in the same pH calibration solution.
• Press
z for pH calibration. Buffer solution is automatically recognized.
• Place EC probe in calibration solution and press
z to follow with
conductivity calibration. Conductivity solution is automatically recognized.
• Affix supplied suction cups to secure the probes in position.
• When measuring, please ensure that both the pH electrode and the EC probe
are immersed in the sample. For best results, please refer to the diagram
below for proper placement.
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