Hanna Instruments HI 8819 Manual de usuario

HI 8819 - HI 8820

Bench Conductivity

Meters

Instruction Manual

Standard Conductivity at 25°C

Standard

HI 7033

HI 7031

HI 7030

HI 7034

Conductivity

TEMPERA

TURE

90 µS

1413 µS

12,880 µS

80,000 µS

OFF

Standard Conductivity at 25°C

Standard

HI 7033

HI 7031

HI 7030

HI 7034

Conductivity

TEMPERATURE

COEFFICIENT

90µS

1413 µS

12,880 µS

80,000 µS

OFF

1999

µS

199.9

µS

99.9

19.99

0.5 11.5 2

2.5

HI 8819

HI 8820

COND

TEMP

1999

µS

199.9

µS

99.9

19.99

http://www.hannainst.com These Instruments are in

Compliance with the CE Directives

Dear Customer,

Thank you for choosing a Hanna Instruments Product.

Please read this instruction manual carefully before using the instru-

ment.

This manual will provide you with all the necessary information for the

correct use of the instrument, as well as a precise idea of its versatility

in a wide range of applications.

These instruments are in compliance with CSA, UL and (EN

50081-1 and EN 50082-1) directives.

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

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

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

KEYBOARD AND REAR PANEL ............................................................... 4

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

CONDUCTIVITY MEASUREMENTS ........................................................... 6

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

CONDUCTIVITY VS. TEMPERATURE CHART ........................................... 12

TEMPERATURE COMPENSATION .......................................................... 13

DETERMINATION OF THE TEMPERATURE

COEFFICIENT OF A SOLUTION (FOR HI8820 ONLY) .............................. 14

PROBE MAINTENANCE ....................................................................... 15

ACCESSORIES .................................................................................... 16

WARRANTY ........................................................................................ 18

CE DECLARATION OF CONFORMITY...................................................... 19

ISO 9000 Certified

Company since 1992

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

PRELIMINARY EXAMINATION

Remove the instrument from the packing material and examine it to

make sure that no damage has occurred during shipping. If there is

any damage, notify your Dealer.

Each meter comes supplied with a conductivity probe (HI7685 for

HI8819 or HI7687 for HI8820), a voltage adapter, a dust cover and

an instruction manual.

Note::::: Save all packing material until you are sure that the instrument

functions correctly. All defective items must be returned in the

original packing with the supplied accessories.

HI8819 and HI8820 are digital bench-top multirange conductivity

meters designed for simplicity of use in measuring electrical conduc-

tivity in liquids. Four ranges of conductivity measurements are provided

to cover every application from deionized water to brine. The conduc-

tivity probe does not require changing or re-calibration when switching

from one range to another.

The probe is made of glass with 4 platinum rings that are corrosion

resistant. It is also suitable for measuring conductivity of liquids in

small sample sizes, and comes with a 1 m (3.3') cable.

The temperature effect can be compensated through a knob on the

front panel of HI8819.

With HI8820, the 4-ring probe has a built-in temperature sensor that

automatically compensates for temperature changes in the liquid

tested. The temperature coefficient can be adjusted from 0 to 2.5%.

GENERAL DESCRIPTIONGENERAL DESCRIPTION

GENERAL DESCRIPTION

Standard Conductivity at 25°C

Standard

HI 7033

HI 7031

HI 7030

HI 7034

Conductivity

TEMPERATURE

COEFFICIENT

84 µS

1413 µS

12,880 µS

80,000 µS

OFF

1999

µS

199.9

µS

99.9

19.99

0.5 11.5 2

2.5

Standard Conductivity at 25°C

Standard

HI 7033

HI 7031

HI 7030

HI 7034

Conductivity

TEMPERATURE

84 µS

1413 µS

12,880 µS

80,000 µS

OFF

COND

TEMP

1999

µS

199.9

µS

99.9

19.99

Keyboard of HI 8819

Keyboard of HI 8820

KEYBOARD & REAR PANELKEYBOARD & REAR PANEL

KEYBOARD & REAR PANEL

KEYBOARD:

ON/OFF To switch the instrument ON or OFF

COND/TEMP To select the display of conductivity readings or tem-

perature settings for compensation (for HI8819 only)

199.9 µS To select the range 0.0 to 199.9µS/cm

1999 µS To select the range 0 to 1999µS/cm

19.99 mS To select the range 0.00 to 19.99 mS/cm

99.9 mS To select the range 0.0 to 99.9mS/cm

TEMPERATURE Knob: To manually set to the temperature compen-

sation of the reading (for HI8819 only)

TEMPERATURE COEFFICIENT knob: To set the temperature coeffi-

cient from 0% to 2.5% per °C (for HI8820 only).

REAR PANEL:

1) Probe Connection

Connect the conductivity probe to the DIN socket.

2) Calibration Trimmer

3) DC Power Socket

Power connection

Plug the 12VDC adapter (HI710005 or HI710006) into the DC socket.

Note: Make sure the main line is protected by a fuse.

CAL. DC POWER

12V to 20V

CONDUCTIVITY

ELECTRODE +

123

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

HI8819

Range 0.0 to 199.9 µS/cm

0 to 1999 µS/cm

0.00 to 19.99 mS/cm

0.0 to 99.9 mS/cm

Resolution 0.1 µS/cm; 1 µS/cm

0.01 mS/cm; 0.1 mS/cm

Accuracy ±1% Full Scale excluding probe error

Typical EMC ±1% Full Scale

Deviation

Calibration Manual single point through trimmer

Temperature Manual from 0 to 50°C (32to 122°F)

Compensation with ß at 2%/°C

Probe HI 7685 platinum 4-ring conductivity probe

with 1 m (3.3') cable (included)

Power Supply 12VDC through HI710005 or HI710006 (included)

Environment 0 to 50°C (32 to 122°F); 95% RH

Dimensions 230x 170x 70mm (9.1 x 6.7 x 2.7")

Weight 1 Kg (2.2 lbs)

HI8820

Range 0.0 to 199.9 µS/cm

0 to 1999 µS/cm

0.00 to 19.99 mS/cm

0.0 to 99.9 mS/cm

Resolution 0.1 µS/cm; 1 µS/cm

0.01 mS/cm; 0.1 mS/cm

Accuracy ±1% Full Scale excluding probe error

Typical EMC ±2% Full Scale

Deviation

Calibration Manual single point through trimmer

Temperature Automatic from 0 to 50°C (32to 122°F)

Compensation with a variable ß from 0 to 2.5%/°C

Probe HI 7687 platinum 4-ring conductivity probe

with 1 m (3.3') cable (included)

Power Supply 12VDC through HI710005 or HI710006 (included)

Environment 0 to 50°C (32 to 122°F); 95% RH

Dimensions 230x 170x 70mm (9.1 x 6.7 x 2.7")

Weight 1 Kg (2.2 lbs)

CONDUCTIVITY MEASUREMENTSCONDUCTIVITY MEASUREMENTS

CONDUCTIVITY MEASUREMENTS

Make sure that the instrument has been calibrated before taking

conductivity measurements (see page 8 for calibration procedure).

Connect the probe to the back of the meter and

switch the instrument on by pressing the ON/OFF

key. If possible, to minimize any EMC interfer-

ences, use plastic beakers for the solutions.

FOR HI8819:

••

• Immerse the probe in the solution submerging

the holes of the sleeve (0.5 cm below). Tap

the probe lightly on the bottom of the recipi-

ent to remove any air bubbles which may

have being trapped inside the sleeve.

••

• Take the temperature of the solution with a

CHECKTEMP or a glass thermometer.

••

• Press the COND/TEMP key to select tempera-

ture mode.

••

• Adjust the TEMPERATURE knob until the LCD

displays the temperature of the solution.

••

• Press the COND/TEMP key to select the con-

ductivity measurement range.

••

• If the display shows only a "1", there is an

over-range condition. Select the next higher

range.

••

• The conductivity reading displayed has been manually compen-

sated for temperature variations.

••

• After the measurement is completed, the in-

strument should be switched off by pressing

the ON/OFF key and the probe should be

cleaned (see page 15 for cleaning procedure).

°C

TEMPERATURE

1.51

0.5

TEMPERATURE COEFFICIENT

FOR HI8820:

••

• Immerse the probe in the solution submerging

the holes of the sleeve (0.5 cm below). Tap

the probe lightly on the bottom of the recipient

to remove any air bubbles which may have

being trapped inside the sleeve.

••

• If the display shows only a "1", there is an

over-range condition. Select the next higher

range.

••

• Adjust the "TEMPERATURE COEFFICIENT" knob

to the value of the solution. See page 15 for

the procedure to select the correct coefficient

value.

••

• Before taking any measurement allow a few minutes for the

reading to stabilize. As soon as the thermal equilibrium is reached

(3 or 4 minutes) the reading stops drifting.

• The conductivity reading displayed has been automatically com-

pensated for temperature variations (after 2 or 3 minutes).

••

• After the measurement is completed, the in-

strument should be switched off by pressing

the ON/OFF key and the probe should be

cleaned (see page 15 for cleaning procedure).

CALIBRATIONCALIBRATION

CALIBRATION

INITIAL PREPARATION

If you are measuring in the mS ranges, calibrate the meter using

HI7030 (or HI8030) conductivity solution (12.88 mS @ 25°C) or

HI7034 (or HI8034) conductivity solution (80 mS @ 25°C). Choose

a solution with a conductivity value close to the solution to be

measured. For the µS ranges, use HI7031 (or HI8031) conductivity

solution (1413 µS @25°C) when calibrating in the range from 0 to

1999 µS or HI7033 (or HI8033) conductivity solution (84 µS @

25°C) when calibrating in the range from 0 to 199.9 µS.

Rinse the probe thoroughly in distilled water. This is to minimize

contamination of the calibration solution and secure higher accuracy.

When possible, use plastic beakers to minimize any EMC interfer-

ences.

PROCEDURE FOR HI8819:

• Pour a small quantity of the conductivity so-

lution into a plastic beaker e.g. HI7030 or

HI8030 (12.88 mS/cm @ 25°C).

• Immerse the conductivity probe in the solu-

tion submerging the holes of the sleeve (0.5cm

below). Make sure that no air bubbles are

trapped inside the glass sleeve. Wait for 2 or

3 minutes for the thermal equilibrium.

• Use a CHECKTEMP or a glass thermometer

with resolution of 1° for measuring the

temperature of the solution (e.g. 18°C).

• Switch the instrument on by pressing the ON/

OFF key.

• Press COND/TEMP key to display temperature

settings.

• Adjust the TEMPERATURE knob to display

"25°C" if you are using 25°C (77°F) as refer-

ence temperature.

HI 7030

°C

TEMPERATURE

CAL DC POWER

12V to 20V

CONDUCTIVITY

ELECTRODE +

TEMPERATURE

• Press the COND/TEMP key to display conduc-

tivity readings and select the appropriate

conductivity range

e.g. "19.99 mS" for HI7030/HI8030,

"99.9 mS" for HI7034/HI8034,

"1999µS" for HI7031/HI8031,

"199.9 µS" for HI7033/HI8033.

• Using a small screwdriver adjust the trimmer on the rear panel

until the display shows the conductivity reading at the tempera-

ture of the solution noted earlier (see the

conductivity vs. temperature chart on page

13) e.g. "11.19 mS".

Calibration is now completed and the instrument is ready for use.

TO CHECK THE CALIBRATION

• Press the COND/TEMP key to display the tem-

perature.

• Adjust the TEMPERATURE knob to display the

temperature of the calibration solution, i.e.

the temperature noted with the CHECKTEMP

or glass thermometer.

• Press the COND/TEMP key to display conduc-

tivity.

• The display should read the conductivity of the

calibrating solution at the reference tempera-

ture.

E.g. using HI7030/HI8030 with a so-

lution at 18°C, the reading will be

"12.88 mS".

PROCEDURE FOR HI8820:

• Pour a small quantity of the conductivity solu-

tion into a plastic beaker.

• Immerse the conductivity probe in the solution sub-

merging the holes of the sleeve (0.5 cm below).

Make sure that no air bubbles are trapped inside

the glass sleeve. Wait for 2 or 3 minutes for thermal

equilibrium.

• Switch the instrument on by pressing the ON/OFF

key.

• Select the appropriate conductivity range

e.g. "19.99 mS" for HI7030/HI8030,

"99.9 mS" for HI7034/HI8034,

"1999µS" for HI7031/HI8031,

"199.9 µS" for HI7033/HI8033.

• Set the temperature coefficient knob to

2%°C.

HI 7030

0.5 11.5 2

2.5

TEMPERATURE

COEFFICIENT

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