Hanna Instruments HI 1285-5 Quick Reference Manual

Ph/ec/tds/c meter

HI 9813-5

pH/EC/TDS/°C meter

Quick Reference Guide

TAKING MEASUREMENTS

• Connect the HI 1285-5 probe and switch the meter ON.

• Submerge the probe into the sample to be tested.

• Select the desired measurement range (pH, mS/cm, ppm, °C)

by pressing the correspondent key.

Note: If the display shows only a "1", the

meter is out of range.

• Wait for a couple of minutes for reaching

the thermal equilibrium before taking any

measurements.

• After use switch off the instrument, clean and cover the probe

with the protective cap.

Note: It is recommended to clean often the probe with HI 700661

Cleaning Solution.

When the battery level is so low that it may cause unreliable

measurements, the meter turns off.

It is recommended to replace the battery immediately.

Unscrew the three screws on the rear of the meter, remove the

battery compartment cover and replace the 9V alkaline battery

with a new one while observing its polarity.

Make sure the battery contacts are tight and secure before

replacing the cover.

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Table of Contents

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Page 1 Quick Reference Guide TAKING MEASUREMENTS • Connect the HI 1285-5 probe and switch the meter ON. • Submerge the probe into the sample to be tested. • Select the desired measurement range (pH, mS/cm, ppm, °C) by pressing the correspondent key.
Page 2 CALIBRATION PROCEDURE • Connect the probe and switch the meter ON. • Immerse the probe in the calibration solution. • For pH calibration: use HI 7007 (pH 7.01) buffer if you are going to measure neutral or close to neutral samples, HI 7004 (pH 4.01) if you are going to measure acidic samples or HI 7010 (pH 10.01) for alkaline measurements.