User Guide

ManualsBrandsHanna Instruments ManualsMeasuring instrumentsHI 98401

• The measured temperature is shown on the upper display.

• Immerse the temperature probe in a bath at 0.0°C.

• Press CAL. CAL and BUF will appear on the display with the

" symbol blinking. The upper part of the display shows the

calibration point (0.0 °C).

• When CON appears on the display it means that the value has

been recognized and the reading is stable. Press CFM to confirm.

Nota: If the reading of the instrument is too far from the expected

value (in this case 0.0°C), the "

symbol starts blinking to advise of an

error. In this case verify if the tem-

perature of the bath is correct (for best

results, use a stirrer to agitate a solu-

tion of ice and water), and if the probe is functioning properly.

• Press CAL and then press BUF to visualize the second calibration

point (50.0 °C).

• Immerse the temperature probe in a bath at 50.0°C.

• When CON appears it means that the value has been recognized

and the reading is stable. Press CFM to confirm.

• Switch the meter off and back on again to return to normal

measurement mode.

ELECTRODE MAINTENANCEELECTRODE MAINTENANCE

ELECTRODE MAINTENANCE

PREPARATION

The FC 301B fluoride electrode is sent dry to prolong

its life. The HI 5313 reference electrode instead should

be maintained wet with storage solution in the protec-

tive cap.

Remove the protective cap from the HI 5313 reference

electrode.

Presence of any salt deposits around the bottom of the

electrode is normal and they will wash away if rinsed

with deionized water.

If the junction of the HI 5313 reference electrode is

dry, soak the tip in a solution of HI 7082 or HI 8082

for at least one hour prior to operation.

If the bulb of the FC 301B single fluoride electrode is dry, soak the tip

in a solution of HI 70702 (10 ppm of F

)

for at least three hours for at least three hours

for at least three hours

before commencing to use it.before commencing to use it.

before commencing to use it.

STORAGE

The FC 301B fluoride electrode must be stored dry to prolong its life.

After use, rinse it with deionized water, dry it attentively with a non-

abrasive cloth and store it dry.

The HI 5313 reference electrode on the other hand should be kept wet

for a rapid response. After use, rinse the electrode with deionized

water, fill the protective cap with a few drops of the HI 7082 or

HI 8082 solution and replace the cap on the electrode.

PERIODIC MAINTENANCE

Periodically check the electrodes and cables. The cables should be

intact and show no sign of wear and tear. The electrode bulb and stem

should present no cracks (in which case it, must be replaced). The

connectors must be clean and dry. Rinse the reference electrode with

deionized water to wash away any salt deposits that there might be.

REFERENCE ELECTRODE CLEANING

General: Immerse the tip of the reference electrode in the

HI 7061 or HI 8061 General Cleaning Solution for

about one hour.

Protein: Immerse the tip of the reference electrode in the

HIHI

7073 7073

7073 or

HI 8073HI 8073

HI 8073 Protein Cleaning Solution for

about 15 minutes.

HI 5313