Hanna Instruments HI 8733 User Manual

Instruction Manual

HI 8633

HI 8733 - HI 8734

Reliable and Waterproof

Multi-Range

Conductivity Meters

www.hannainst.com

Dear Customer,
Thank you for choosing a Hanna Product. Please read this instruction

manual carefully before using the instrument. It 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 [e-mail].

These instruments are in compliance with the directives.

PRELIMINARY 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:

• Conductivity probe with DIN connector and 1 m (3.3') cable:

• HI 76301D for HI 8633 and HI 8734

• HI 76302W for HI 8733

• Calibration solution sachet

• Screwdriver, 1 x 9V battery and instruction manual

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

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

TABLE OF CONTENTS

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

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

FUNCTIONAL DESCRIPTION & SPECIFICATIONS OF HI 8633........ 4

FUNCTIONAL DESCRIPTION & SPECIFICATIONS OF HI 8733........ 5

FUNCTIONAL DESCRIPTION & SPECIFICATIONS OF HI 8734........ 6

OPERATIONAL GUIDE ................................................................. 7

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

CONDUCTIVITY VERSUS TEMPERATURE CHART ........................... 12

TDS VERSUS TEMPERATURE CHART ........................................... 13

DETERMINING THE TEMPERATURE COEFFICIENT OF A SOLUTION

(HI 8733) ............................................................................... 14

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

BATTERY REPLACEMENT ............................................................ 16

ACCESSORIES ........................................................................... 17

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

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

GENERAL DESCRIPTION

HI 8633 and HI 8733 have been designed specifically for use in the areas
of production and quality control. It is often necessary to test samples with
different concentrations ranging from deionized water to brine.
Both models can be manually calibrated at 1 point.
The HI 8733, with a built-in temperature sensor and Automatic
Temperature Compensation, is the perfect instrument for measuring
samples with fluctuating temperature.
HI 8734 has been specially designed for the water conditioning industry,
particularly in the softening, demineralization, reverse osmosis and
drinking water applications.
Three ranges of measurement assure the highest accuracy possible. In
addition, Manual Temperature Compensation is possible through a knob
on the front panel.
The ratio between conductivity and TDS is factory set at 0.5.
Moreover, the 4-ring potentiometric probes supplied with the meters are
made of rugged PVC - ideal for indoor, as well as outdoor measurements.

32

FUNCTIONAL DESCRIPTION &

SPECIFICATIONS OF HI 8633

FUNCTIONAL DESCRIPTION &

SPECIFICATIONS OF HI 8733

1) Liquid Crystal Display

2) Conductivity/temperature selection key

3) Measurement range selection keys

4) Manual temperature compensation knob

5) ON/OFF key

Range 0.0 to 199.9 / 0 to 1999 µS/cm

0.00 to 19.99 / 0.0 to 199.9 mS/cm

Resolution 0.1 / 1 µS/cm

0.01 / 0.1 mS/cm

Accuracy ±1% Full Scale
(@ 20°C/68°F) excluding probe error

Typical EMC ±2% Full Scale
Deviation

Calibration Manual, 1 point, through trimmer
Temperature Manual, 0 to 50°C (32 to 122°F)

Compensation with β = 2%/°C
Probe (included) HI 76301D with 1m (3.3') cable
Environment 0 to 50°C (32 to 122°F);

RH max 100%

Battery Type 1 x 9V, alkaline (IEC 6LR61)
Life Approx. 100 hours of continuous use

Dimensions 164 x 76 x 45 mm (6.5 x 3.0 x1.8")
Weight 250 g (8.8 oz.)

1) Liquid Crystal Display

2) Measurement range selection keys

3) Automatic Temperature Compensation coefficient knob

4) ON/OFF key

Range 0.0 to 199.9 / 0 to 1999 µS/cm

0.00 to 19.99 / 0.0 to 199.9 mS/cm

Resolution 0.1 / 1 µS/cm

0.01 / 0.1 mS/cm

Accuracy ±1% Full Scale
(@ 20°C / 68°F) excluding probe error

Typical EMC ±2 % Full Scale
Deviation

Calibration Manual, 1 point, through trimmer
Temperature Automatic, 0 to 50°C (32 to 122°F) with

Compensation β adjustable from 0 to 2.5% per °C
Probe (included) HI 76302W ATC with 1m (3.3') cable
Environment 0 to 50°C (32 to 122°F);

RH max 100%

Battery Type 1 x 9V, alkaline (IEC 6LR61)
Life Approx. 100 hours of continuous use

Dimensions 164 x 76 x 45 mm (6.5 x 3.0 x1.8")
Weight 250 g (8.8 oz.)

54

FUNCTIONAL DESCRIPTION &

SPECIFICATIONS OF HI 8734

1) Liquid Crystal Display

2) Measurement range selection keys

3) Manual temperature compensation knob

4) TDS/temperature selection key

5) ON/OFF key

Range 0.0 to 199.9 / 0 to 1999 mg/L

0.00 to 19.99 g/L

Resolution 0.1 / 1 mg/L

0.01 g/L

Accuracy ±1% Full Scale
(@ 20°C / 68°F) excluding probe error

Typical EMC ±2 % Full Scale
Deviation

Calibration Manual, 1 point, through trimmer
Temperature Manual, 0 to 50°C (32 to 122°F)

Compensation with β = 2%/°C
TDS factor 0.5
Probe (included) HI 76301D with 1m (3.3') cable
Environment 0 to 50°C (32 to 122°F); RH max 100%
Battery Type 1 x 9V, alkaline (IEC 6LR61)

Life Approx. 100 hours of continuous use
Dimensions 164 x 76 x 45 mm (6.5 x 3.0 x1.8")
Weight 250 g (8.8 oz.)

OPERATIONAL GUIDE

• Each meter is supplied complete with a 9V battery. Remove the
battery compartment cover on the back of the meter (see
page 16). Install the battery while paying attention to its
polarity.

• Connect the probe to the meter securely
by aligning the pins with the socket
and pushing the plug in.

• Make sure that the meter has been calibrated before taking any
measurements (see "Calibration" section).

• Immerse the conductivity probe into the
sample, with the holes on the shaft
completely submerged.

If possible, use plastic beakers or con­tainers to minimize any EMC interference.

• Tap the probe lightly on the bottom of the beaker to remove any
air bubbles which may be trapped inside the PVC sleeve.

• Turn the instrument on by pressing the ON/OFF key.

• For HI 8633 and HI 8734:

Take the temperature of the solution
with a ChecktempC or another accurate
thermometer.

Press the COND/TEMP key for HI 8633 or TDS/TEMP for HI 8734
to display the temperature and adjust the temperature knob to
that of the solution e.g. 20°C.

COND.
TEMP.

TDS

TEMP.

ºC

• For HI 8733:

Adjust the TEMPERATURE COEFFICIENT
knob to 2% to compensate for the
temperature effect of average solutions
(to determine exact value for a particu-

TEMPERATURE COEFFICIENT

lar solution, see page 14).

°C

2.5

0

2

0.5

1.51

76

• Select the appropriate measurement range.
Note: If the display shows only a "1" on the

far left hand side, the meter is out of
range. Select the next (higher) range.

• Wait for a couple of minutes for the temperature sensor to reach
thermal equilibrium with the sample before taking measure­ments.

• After the measurement has been completed, the instrument
should be switched off and the probe should be cleaned and
dried (see "Probe Maintenance" on page 15).

CALIBRATION

air bubbles remain trapped in the sleeve.

• Record the temperature of the buffer solution from the thermom­eter (e.g. 18°C).

• Switch the instrument on by pressing ON/OFF.

• Press COND/TEMP (HI 8633) or
TDS/TEMP (HI 8734) to display

COND.

TEMP.

ON

OFF

TDS

TEMP.

the temperature.

• Adjust the TEMPERATURE knob to display 18°C.

Accessories needed:

• Use any calibration solution within the meter's range. The
solution should ideally be close to the samples being mea­sured. Use for example HI 7030 or HI 8030, 12880 µS/cm
(=12.88 mS/cm) conductivity solution, for HI 8633 and HI
8733, and HI 7032, 1382 mg/L (=2764 µS/cm) TDS
solution, for HI 8734.

• ChecktempC or another accurate thermometer with 0.1°C
resolution (not necessary for HI 8733).

• a small screwdriver.

PROCEDURE FOR HI 8633 AND HI 8734

• Pour sufficient quantity of a conductivity
(HI 8633) or TDS (HI 8734) calibration
solution (e.g. HI 7030 or HI 7032) into
a beaker to cover the holes on the probe.
If possible, use plastic beakers to mini­mize any EMC interference.

• Immerse the conductivity probe, making
sure that holes are completely submerged,
and the ChecktempC in the solution.

• Wait for a couple of minutes for thermal
equilibrium to be reached.

• Tap the probe on the bottom, then
shake it while rotating to make sure no

TEMPERATURE

• Press COND/TEMP (or TDS/TEMP)
again to display conductivity mea-

COND.

TEMP.

TDS

TEMP.

surement.

• Select 19.99 mS/cm (HI 8633)
or 1999 mg/L (HI 8734) range

19.99
mS

1999

mg/l

by pressing the appropriate
range key.

• Remove the battery compartment cover and adjust the calibration
trimmer located inside with the calibration screwdriver until the
display shows for HI 8633 the conductivity reading at 25°C (see
the conductivity vs. temperature table), e.g. @ 25°C, 12880 µS/
cm = 12.88 mS/cm, or for HI 8734 the TDS reading at 25°C

HI 7030

°C

(see the TDS vs. temperature chart), e.g. @25°C, 1382 mg/L.

98

• All subsequent measurements will be compensated to 25°C (77°F).
If you prefer to standardize the temperature compensation to

20°C (68°F) rather than 25°C (77°F), leave the TEMPERATURE
knob at 18°C (if the temperature of the solution is 18°C), adjust
the trimmer to read "11.67 mS" (see the conductivity vs. tem­perature chart) or "1251 mg/L" (see the TDS vs. temperature
chart). All subsequent measurements will be compensated to
20°C.

• The calibration is now complete and the instrument is ready for
use.

The instrument should be recalibrated at least once a month, or
when the probe is changed.

Note: For more accurate results, it is advisable to use a calibration

solution close to the measurement range. See the "Accessories"
section for a wide selection of conductivity solutions.

PROCEDURE FOR HI 8733

• Pour sufficient quantity of a conductivity
calibration solution (e.g. HI 7030/
HI 8030) into a beaker to cover the holes
on the probe. If possible, use plastic
beakers to minimize any EMC interfer­ence.

• Immerse the conductivity probe in the
solution, making sure that holes are com­pletely submerged.

• Wait for a couple of minutes for thermal
equilibrium to be reached.

• Tap the probe on the bottom, then shake it while rotating to
make sure no air bubbles remain trapped in the sleeve.

• Switch the instrument on by pressing
ON/OFF.

• Set the temperature coefficient knob to
2% to compensate for the temperature
effect of average solutions (to determine
exact value for a particular solution, see

0

0.5

TEMPERATURE COEFFICIENT

page 14).

• Select 19.99 mS/cm range by pressing
the appropriate range key.

HI 7030

ON

OFF

2.5

2

1.51

19.99
mS

• Remove the battery compartment cover and adjust the calibration
trimmer located inside with the calibration screwdriver until the
display shows "12.88 mS" i.e. the conductivity reading @ 25°C.

• All subsequent measurements will be compensated to 25°C (77°F).
If you prefer to standardize the temperature compensation to

20°C (68°F) rather than 25°C (77°F), adjust the trimmer to read
"11.67 mS" (see the conductivity vs. temperature chart on page

18). All subsequent measurements will be compensated to 20°C.

• The calibration is now complete and the instrument is ready for
use.

The instrument should be recalibrated at least once a month, or
when the probe is changed.

Note: For more accurate results, it is advisable to use a calibration

solution close to the range to be measured. See the "Accesso­ries" section for a wide selection of conductivity solutions.

1110

CONDUCTIVITY VERSUS

TEMPERATURE CHART

TDS VERSUS

TEMPERATURE CHART

The conductivity of an aqueous solution is the measure of its ability to
carry an electrical current by means of ionic motion.

The conductivity invariably increases with increasing temperature.
It is affected by the type and number of ions in the solution and by

the viscosity of the solution itself. Both parameters are temperature
dependent. The dependency of conductivity on temperature is ex­pressed as a relative change per degree Celsius at a particular
temperature, commonly as percent per °C.

For manual temperature compensation, refer to the following chart:

°C °F HI 7030 HI 7031 HI 7033 HI 7034 HI 7035 HI 7039

HI 8030 HI 8031 HI 8033 HI 8034 HI 8035 HI 8039

(µS/cm) (µS/cm) (µS/cm) (µS/cm) (µS/cm) (µS/cm)

0 32 7150 776 64 48300 65400 2760

5 41 8220 896 65 53500 74100 3180
10 50 9330 1020 67 59600 83200 3615
15 59 10480 1147 68 65400 92500 4063
16 60.8 10720 1173 70 67200 94400 4155
17 62.6 10950 1199 71 68500 96300 4245
18 64.4 11190 1225 73 69800 98200 4337
19 66.2 11430 1251 74 71300 100200 4429
20 68 11670 1278 76 72400 102100 4523
21 69.8 11910 1305 78 74000 104000 4617
22 71.6 12150 1332 79 75200 105900 4711
23 73.4 12390 1359 81 76500 107900 4805
24 75.2 12640 1386 82 78300 109800 4902

25 77 12880 1413 84 80000 111800 5000

26 78.8 13130 1440 86 81300 113800 5096
27 80.6 13370 1467 87 83000 115700 5190
28 82.4 13620 1494 89 84900 117700 5286
29 84.2 13870 1521 90 86300 119700 5383
30 86 14120 1548 92 88200 121800 5479
31 87.8 14370 1575 94 90000 123900 5575

For instance, the conductivity values of the calibration solutions at
25°C are 12880 µS/cm, 1413 µS/cm or 5000 µS/cm when using
HI 7030, HI 7031 or HI 7039, respectively.

At 20°C, the values are 11670 µS/cm, 1278 µS/cm or
4523 µS/cm, respectively.

With the solutions at 30°C, the values are 14120 µS/cm, 1548 µS/
cm or 5479 µS/cm, respectively.

The TDS value in aqueous solutions is directly proportional to conduc­tivity. The ratio between the two parameters depends on the solution
and usually it is set to a factor of 0.5 (corresponding to a solution of
CaCO3). This means that 1 µS/cm is equal to 0.5 mg/L (ppm) of TDS.

For manual temperature compensation, refer to the following chart:

° C ° F HI 7032 HI 7036

mg/L g/L

(ppm) (ppt)

0 32 758 6.82

5 41 876 7.88
10 50 999 8.99
15 59 1122 10.10
16 60.8 1148 10.33
17 62.6 1173 10.56
18 64.4 1200 10.78
19 66.2 1224 11.01
20 68 1251 11.24
21 69.8 1277 11.47
22 71.6 1303 11.71
23 73.4 1329 11.94
24 75.2 1358 12.18

25 77 1382 12.41

26 78.8 1408 12.65
27 80.6 1438 12.89
28 82.4 1461 13.13
29 84.2 1476 13.37
30 86 1515 13.61
31 87.8 1541 13.85

For instance, the TDS values of the calibration solutions at 25°C are
1382 mg/L or 12.41 g/L when using HI 7032 or HI 7036,
respectively.

At 20°C, the values are 1251 mg/L or 11.24 g/L, respectively.
With the solutions at 30°C, the values are 1515 mg/L or 13.61 g/L,

respectively.

1312

DETERMINING THE TEMPERATURE

COEFFICIENT OF A SOLUTION (HI 8733)

PROBE MAINTENANCE

Highly acidic, alkaline samples or solutions with high salt content
might have a different coefficient than the customary 2% per degree °C.

In order to calculate this coefficient follow the procedure below:

• Immerse the probe of HI 8733 in the sample and adjust the
TEMPERATURE COEFFICIENT knob to 0% (i.e. no compensation).

2.5

0

2

0.5

TEMPERATURE COEFFICIENT

1.51

• Condition the sample and probe to 25°C and note the conductiv­ity reading, C25.

• Condition the sample and probe to a different temperature t°C
(approximately 10°C different from 25°C) and note the conduc­tivity reading Ct.

• The temperature coefficient β of the solution is calculated as given
by the following formula:

β = 100 x

(Ct - C25)

(t - 25) x C

25

The above procedure is suitable for determining the temperature
coefficient in a laboratory or where the temperature of the solution
can be controlled.

If this is not possible (e.g. on-site measurements), the following
procedure can be used providing the sample temperature varies by at
least 5°C or preferably 10°C:

• Immerse the probe of HI 8733 in the test solution and turn the
TEMPERATURE COEFFICIENT knob to 0% (no compensation).

• Check the conductivity reading and record the value. Make sure
the reading is stable, i.e. no greater variations than ±0.2 mS/
cm within a minute.

• Repeat the procedure when the temperature of the test solution
has changed by at least 5°C. Wait for the conductivity reading to
stabilize.

• Adjust the TEMPERATURE COEFFICIENT knob until the display
shows the same value as recorded earlier.

• The value indicated by the knob is the temperature coefficient of
the solution.

Rinse the probe with tap wa­ter after every series of
measurements. If a more thor­ough cleaning is required,
remove the PVC sleeve and
clean the probe with a cloth or
a nonabrasive detergent.
When reinserting the sleeve
onto the probe, be sure that
the sleeve is in the right direc­tion with the four holes towards
the cable end.

After cleaning the probe,
recalibrate the instrument.

The probe body is in PVC. For
this reason it must never come
into close contact with a heat
source. If the probe is exposed
to high temperatures (above
50°C/122°F), the rings might
become loose or detached, re­sulting in a serious impairment
of the probe. In such cases,
the probe has to be replaced.

1514

BATTERY REPLACEMENT

ACCESSORIES

When the battery becomes weak the meters will display an additional
blinking decimal point.

When the low battery indicator appears, the battery has only a few
hours left. A low battery will result in unreliable measurements.

It is recommended to replace the battery immediately.
Battery replacement must only take place in a nonhazardous area

using a 9V alkaline battery.
Unscrew the three screws on the rear of the meter, remove the battery

compartment cover and replace the 9V battery with a new one.

CALIBRATION SOLUTIONS

HI 7030L 12880 µS/cm, 500 mL bottle
HI 7030M 12880 µS/cm, 230 mL bottle
HI 7031L 1413 µS/cm, 500 mL bottle
HI 7031M 1413 µS/cm, 230 mL bottle
HI 7033L 84 µS/cm, 500 mL bottle
HI 7033M 84 µS/cm, 230 mL bottle
HI 7034L 80000 µS/cm, 500 mL bottle
HI 7034M 80000 µS/cm, 230 mL bottle
HI 7035L 111800 µS/cm, 500 mL bottle
HI 7035M 111800 µS/cm, 230 mL bottle
HI 7039L 5000 µS/cm, 500 mL bottle
HI 7039M 5000 µS/cm, 230 mL bottle
HI 7032L 1382 ppm (mg/L), 500 mL bottle
HI 7032M 1382 ppm (mg/L), 230 mL bottle
HI 7036L 12.41 ppt (g/L), 500 mL bottle
HI 7036M 12.41 ppt (g/L), 230 mL bottle

CONDUCTIVITY PROBES

HI 76301D Conductivity probe with 1m (3.3') cable and DIN

connector

HI 76302W Conductivity probe with built-in temperature sensor,

1m (3.3') cable and DIN connector

Make sure the battery contacts are tight and secure before replacing
the cover.

OTHER ACCESSORIES

ChecktempC Electronic thermometer (range: -50.0 to 150.0°C)

HI 710015 Shockproof rubber boot, blue
HI 710016 Shockproof rubber boot, orange
HI 710022 Spare protective case

1716

WARRANTY

All Hanna Instruments meters are warranted for two years
against defects in workmanship and materials when used for their
intended purpose and maintained according to instructions. The
probes are warranted for a period of six months. This warranty
is limited to repair or replacement free of charge.

Damages due to accident, misuse, tampering or lack of prescribed
maintenance are not covered.

If service is required, contact the dealer from whom you purchased the
instrument. If under warranty, report the model number, date of
purchase, serial number and the nature of the failure. If the repair
is not covered by the warranty, you will be notified of the charges
incurred. If the instrument is to be returned to Hanna Instruments,
first obtain a Returned Goods Authorization number from the Cus­tomer Service department and then send it with shipping costs
prepaid. When shipping any instrument, make sure it is properly
packaged for complete protection.

All rights are reserved. Reproduction in whole or in part is
prohibited without the written consent of the copyright owner.

CE DECLARATION OF CONFORMITY

Hanna Instruments reserves the right to modify the design, construction and

appearance of its products without advance notice.

Recommendations for Users

Before using these products, make sure that they are entirely suitable for the environment in which they
are used. Operation of these instruments in residential area could cause unacceptable interference to radio
and TV equipment, requiring the operator to take all necessary steps to correct interferences.
The metal band at the end of the probe is sensitive to electrostatic discharges. Avoid touching this metal
band at all times.
Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC
performance. To avoid electrical shock, do not use these instruments when voltages at the measurement
surface exceed 24 Vac or 60 Vdc.
Use plastic beakers to minimize any EMC interferences. To avoid damage or burns, do not perform any
measurement in microwave ovens.

1918

SALES AND TECHNICAL SERVICE CONTACTS

Australia:

Tel. [phone] • Fax [phone]

China:

Tel. [phone] • Fax [phone]

Egypt:

Tel. & Fax [phone]

Germany:

Tel. [phone] • Fax [phone]

Greece:

Tel. [phone] • Fax [phone]

Indonesia:

Tel. [phone] • Fax [phone]

Japan:

Tel. [phone] • Fax [phone]

Korea:

Tel. [phone] • Fax [phone]

Malaysia:

Tel. [phone] • Fax [phone]

Singapore:

Tel. [phone] • Fax [phone]

South Africa:

Tel. [phone] • Fax [phone]

Taiwan:

Tel. [phone] • Fax [phone]

Thailand:

Tel. [phone] • Fax [phone]

United Kingdom:

Tel. [phone] • Fax [phone]

USA:

Tel. [phone] • Fax [phone]

For e-mail contacts and complete list of Sales and
Technical offices, please see www.hannainst.com

MAN33R2 06/05