Hanna Instruments HI 98401 User Manual

Instruction Manual

HI 98401

Microprocessor-based

Portable Fluoride Meter

Dear Customer, Thank you for choosing a Hanna product. Please read this instruction manual carefully before using the meter.

This manual will provide you with the necessary information for a correct use of the instrument, as well as a more precise idea of its versatility. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com.

These instruments are in compliance with the EN 50081-1 and EN 50082-1.

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

PRELIMINARY EXAMINATION .................................................................. 3

GENERAL DESCRIPTION .......................................................................... 3

FUNCTIONAL DESCRIPTION ..................................................................... 4

SPECIFICATIONS..................................................................................... 5

OPERATIONAL GUIDE .............................................................................. 6

CALIBRATION ......................................................................................... 8

TEMPERATURE CALIBRATION ................................................................ 10

ELECTRODE MAINTENANCE ................................................................... 12

BATTERY REPLACEMENT ....................................................................... 13

ACCESSORIES....................................................................................... 14

WARRANTY .......................................................................................... 15

CE DECLARATION OF CONFORMITY........................................................ 1 5

directives

Manufacturers since 1978

These Instruments are in

Compliance with the CE Directives

Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

PRELIMINARY EXAMINATION

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipping. If there is any noticeable damage, notify your Dealer or the nearest Hanna office immediately.

Each meter is supplied with:

• AA type battery (4 pcs)

• Rugged carrying case

• Instruction manual

Note: Save all packing materials until you are sure that the instru-

ment functions correctly. Any damaged or defective item must be returned in its original packing materials together with the supplied accessories.

GENERAL DESCRIPTIONGENERAL DESCRIPTION

GENERAL DESCRIPTION

GENERAL DESCRIPTIONGENERAL DESCRIPTION

HI 98401 measures fluoride from 0.05 mg/L to 1.9 g/l in 5 distinct scales. With auto-ranging HI 98401 automatically selects the range that provides the best resolution. All results are displayed directly in fluoride (F ability, the measurements are performed utilizing, the optional FC 301B fluoride specific electrode and the separate HI 5313 reference electrode.

HI 98401 compensates for temperature automatically from 5 to 35°C using the optional HI 7662 stainless steel temperature probe. The temperature mensured together with fluoride concentrations are displayed on the large LCD simultaneously.

All operations are microprocessor controlled for added precision and simplicity. The calibration is automatic at one or two points. The first calibration point is in the middle of the range at 100 mg/L (ppm). The slope can then be selected for low fluoride measurements at 10 mg/L, or higher contents at 1000 mg/L.

HI 98401 comes in a rugged waterproof casing so that measurements may be performed indoors as well as outdoors. Four common AA type batteries provide up to 120 hours of continuous operation.

) concentration. In order to guarantee maximum repeat-

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

1) Temperature probe connector

2) Reference electrode connector

3) Fluoride electrode connector (BNC)

4) Liquid Crystal Display (LCD)

5) ON/OFF button

6) CAL button

7) BUF button

8) CFM button

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

OPERATIONAL GUIDEOPERATIONAL GUIDE

OPERATIONAL GUIDE

OPERATIONAL GUIDEOPERATIONAL GUIDE

Scale F

0.050 to 0.500 ppm

0.50 to 5.00 ppm

5.0 to 50.0 ppm 50 to 500 ppm

0.50 to 1.90 g/L

Temp. 0.0 to 50.0 °C

Resolution F

0.001 ppm

0.01 ppm

0.1 ppm 1 ppm

0.01 g/L

Temp. 0.1 °C

Accuracy F

±5% of reading or ±0.02 ppm (whichever greater) with less than ±3°C difference from calibration temperature; or

±10% of reading or ±0.02 ppm (whichever greater) with temp. difference greater than ±3°C

Temp. ±0.5 °C

EMC F

± 2% f.s.

Deviation Temp. ±0.5°C Calibration Automatic 1 or 2 points; first point at 100 ppm

second point at 10.0 or 1000 ppm

Temperature Automatic 5 to 35 °C (41 to 95°F) Compensation with temperature probe attached Electrode FC 301B, fluoride with 1m (3') cable and BNC

connector

HI 5313, reference with 1m (3') cable

Temperature HI 7662 with 1 m (3') cable Probe Power supply 4 x 1.5V AA alcaline batteries

120 hours of continuous use

Environment 0 to 50°C (32 to 122°F); 100% RH Dimensions 196 x 80 x 60 mm (7.7x3.1x2.4") Weight 450 g (15.9 oz.)

INITIAL PREPARATION:

The meter is supplied with 4 pieces of 1.5V AA-type alkaline batteries. Remove the battery cover on the back of the meter and insert the

batteries while paying attention to their polarity. Attach the fluoride electrode (#3 on

page 4), the reference electrode (#2)

F Electrod

Ref.

Temperature probe

and the temperature probe (#1) to their respective connectors on top of the meter.

Press the ON/OFF key to turn the meter on.

Note: The temperature probe can also be used on its own to measure

the temperature independently.

Note: If the temperature probe is not con-

nected, the lower display will indicate

25.0°C with the “°C” symbol blinking.

MEASUREMENT OF FLUORIDE ION CONCENTRATION

Note: Please ensure the meter is calibrated prior to proceeding any

further. In order to obtain accurate results, calibrate the meter at a temperature no more than ±3°C away from the sample to be measured subsequently.

Note: If the fluoride electrode is new, or it has not been used for a

few days, it must be soaked in a solution of HI 70702 (10 ppm

) for at least 3 hours prior to measurement.) for at least 3 hours prior to measurement.

of F

) for at least 3 hours prior to measurement.

) for at least 3 hours prior to measurement.) for at least 3 hours prior to measurement.

• Pour about 10-20 mL of the sample in a clean beaker and add the same quantity of HI 7023 (TISAB) solution to the beaker. Mix the solution for a few minutes.

• Rinse the electrodes with deionized water and dry them attentively with a non-abrasive cloth.

• Immerse the fluoride and the reference electrode as well as the temperature probe to a depth of at least 1 cm (½”) in the prepared sample. Make sure that the electrodes are not touching the bottom of the beaker. Position the temperature probe close to the tip of the other electrodes.

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