Hanna Instruments HI 216 User Manual

Instruction Manual

HI 216

EC/Resistivity

Meter

www.hannainst.com

PRELIMINARY EXAMINATION

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 correct operation.

If you need additional technical information, do not hesitate to e-mail
us at [e-mail].

This instrument is in compliance with the directives.

TABLE OF CONTENTS

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

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

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

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

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

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

DETERMINATION OF THE TEMPERATURE COEFFICIENT ............................ 10

CONDUCTIVITY PROBE MAINTENANCE ................................................... 11

ACCESSORIES ..................................................................................... 12

WARRANTY ........................................................................................ 14

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 damage, notify your dealer.

Each meter is supplied complete with:

• HI 76303 conductivity probe

• HI 3316D resistivity probe

• 12 Vdc adapter

• 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.

GENERAL DESCRIPTION

HI 216 is a combination bench meter that can read conductivity in 4
different ranges, and resistivity.

For conductivity measurements, the calibration is a simple 1 point
procedure through the easy-to-operate front panel knob, and the
supplied probe does not require re-calibration when switching from
one range to another.

The 4-platinum-ring probe has a built-in temperature sensor that
automatically compensates for temperature changes, and the tem­perature coefficient can be adjusted from 0 to 2.5% through a knob
on the front panel.

For resistivity measurements, the meter is factory calibrated and, if
necessary, calibration can be adjusted by acting on the trimmer
located on the rear panel.

The HI 3316D resistivity probe is easy to clean and requires little
maintenance. It also features a built-in temperature sensor to
automatically compensate for temperature variations, with an user­selectable (from 2 to more than 7%) temperature coefficient.

Both probes use the same DIN plug on the rear panel, and the meter
automatically recognizes which probe is connected.

2

3

FUNCTIONAL DESCRIPTION

SPECIFICATIONS

Range 199.9 μS/cm / 0 to 1999 μS/cm

19.99 mS/cm / 199.9 mS/cm
0 to 19.90 MΩ•cm

Resolution 0.1 μS/cm / 1 μS/cm

0.01 mS/cm / 0.1 mS/cm

0.10 MΩ•cm

Accuracy (@20°C/68°F) ±1% FS for EC

±2% FS for resistivity

Calibration Manual, 1 point, for both EC and resistivity
Temperature Compensation

Automatic from 0 to 50°C

with ß selectable from 0 to 2.5%/°C for EC

and from 2 to 7%/°C for resistivity

Probes (included) HI 76303 for conductivity measurements

HI 3316D for resistivity measurements
Power Supply 12 Vdc (power adapter included)
Environment 0 to 50°C (32 to 122°F); RH max 95%
Dimensions 240 x 182 x 74 mm (9.4x7.1x2.9")
Weight 1.0 kg (2.3 lb.)

1) Liquid Crystal Display (LCD)

2) Conductivity calibration knob

3) Conductivity temperature coefficient knob

4) Range keys, to select the 199.9 μS/cm, 1999 μS/cm,

19.99 mS/cm or 199.9 mS/cm range

5) Resistivity temperature coefficient knob

6) ON/OFF switch

7) Power adapter socket

8) Probe connector

9) Resistivity calibration trimmer

4

5

OPERATIONAL GUIDE

PRELIMINARY OPERATIONS

• Plug the supplied 12 Vdc adapter into the power supply socket
on the rear panel.

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

• Connect the desired probe (HI 76303 for conductivity or HI 3316D
for resistivity measurements) to the DIN socket on the rear panel.
The instrument will automatically recognize which probe is con­nected.

Note: Make sure that the instrument has been calibrated before

taking conductivity measurements (see “Calibration” section).

Note: If possible, use plastic beakers to minimize EMC interferences.

• Switch the meter on by pressing the ON/OFF
key.

TAKING CONDUCTIVITY MEASUREMENTS

• Immerse the HI 76303 probe in the solution,
while making sure that the holes of the sleeve
are completely submerged. Tap the probe
lightly on the bottom of the beaker to remove
any air bubbles trapped inside the sleeve.

• Adjust the conductivity TC knob to the tem­perature coefficient value of the solution (see
“Determination of the temperature coefficient
of a solution” section for details).

• Select the appropriate conductivity range, by
pressing the corresponding key.

Note: If the display shows "1", the reading is

over-range. Select the next higher range.

• Allow a few minutes for the reading to stabilize, and the LCD will
display the temperature compensated conductivity reading.

TAKING RESISTIVITY MEASUREMENTS

• Immerse the HI 3316D probe in the solution,

while making sure that the hole on the probe
body is completely submerged.

• Wait for a few seconds to allow stabilization of
reading. The resistivity value of the solution
will be displayed on the LCD.

Note: If the display shows "1", the reading is over-range.

• The reading is automatically corrected for temperature variations
by using the linear compensation method:
R25=Rt(1+β(t-25))
where Rt is the resistivity at the temperature t, and the reference
temperature is 25ºC.

• The temperature coefficient β is selectable
through a front knob, from 2 to 7%/°C.

6

7

CALIBRATION

CONDUCTIVITY CALIBRATION

• It is recommended to calibrate the instrument for the conductivity
range at least once a month, or when the probe is changed.

• For better accuracy, choose a solution with a conductivity value
close to the sample to be measured.

If you are measuring in the mS ranges, calibrate the meter using
the HI 7030 (12.88 mS/cm @25°C) or HI 7034 (80 mS/cm
@25°C) conductivity solution.

For the μS ranges, use HI 7031 (1413 μS/cm @25°C) when
calibrating in the range from 0 to 1999 μS/cm, or HI 7033 (84
μS/cm @25°C) for the 0 to 199.9 μS/cm range.

• Rinse the probe thoroughly with distilled water and, if possible,
use plastic beakers to minimize any EMC interferences.

• Pour a small quantity of the desired conductivity solution into a
plastic beaker, and immerse the probe while making sure that
the holes of the sleeve are completely submerged. Tap the probe
lightly on the bottom of the beaker to remove any air bubbles
trapped inside the sleeve.

• Adjust the conductivity TC knob to 2%/°C.

• Select the appropriate measurement range:

199.9 μS if calibrating with HI 7033 solu-
tion, 1999 μS for HI 7031, 19.99 mS for HI

7030, or 199.9 mS for HI 7034.

Note: If the display shows "1", the reading is

over-range. Select the next higher range.

• Allow a few minutes for the reading to stabi­lize and adjust the calibration knob to read
the calibration solution value @25°C.

• All subsequent measurements will be referenced to 25°C (77°F).

• If you need to reference the measurements to 20°C (68°F), adjust
the calibration knob to read the calibration solution value
@20°C. See conductivity vs. temperature chart.

• Calibration is now complete and the instrument is ready for use.

CONDUCTIVITY VS. TEMPERATURE CHART

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

(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

RESISTIVITY CALIBRATION

• The meter is factory calibrated for resistivity range, and usually
needs recalibration only after a resistivity probe replacement. In
this case, follow the below instructions.

• Immerse the probe in a solution of known resistivity value, and
wait for the reading to stabilize.

• Adjust the calibration trimmer on the rear panel until the
resistivity value of the reference solution is displayed.

8

9

DETERMINATION OF THE TEMPERATURE

COEFFICIENT OF A SOLUTION

CONDUCTIVITY PROBE MAINTENANCE

• Immerse the probe into a sample of the solution and adjust the
conductivity TC knob to 0% (i.e. no compensation).

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

• Condition sample and probe to a temperature T, approximately
5°C to 10°C different from 25°C, and note the conductivity
reading CT.

• The temperature coefficient β of the solution is calculated with the
following formula: β= 100 x (CT-C25) / [(T - 25) x C25]

The above procedure is suitable for determining the temperature
coefficient in the laboratory where the temperature of the solution can
be determined and controlled. If this is not possible, e.g. during field
measurements, the following procedure should be used:

• Immerse the probe into the test solution and turn the conductiv­ity TC knob to 0% (no compensation).

• Allow the reading to stabilize (the reading should not change by
more than ±0.2 mS within 1 minute) and record the value, C.

• Repeat the procedure with the temperature of the solution
changed by more than 10°C. Wait for the conductivity reading to
stabilize.

• Adjust the conductivity TC knob until the display shows the
previously recorded C value.

• 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 sleeve and clean
the probe with a cloth or a non­abrasive detergent.

After cleaning, re-calibrate the in­strument.

The 4-platinum-ring probe body is
made with glass. For this reason,
great care must be taken while
handling the probe.

10

11

ACCESSORIES

CONDUCTIVITY CALIBRATION SOLUTIONS

HI 7030M 12880 μS/cm, 230 mL bottle
HI 7030L 12880 μS/cm, 500 mL bottle
HI 8030L 12880 μS/cm, 500 mL FDA bottle
HI 7031M 1413 μS/cm, 230 mL bottle
HI 7031L 1413 μS/cm, 500 mL bottle
HI 8031L 1413 μS/cm, 500 mL FDA bottle
HI 7033M 84 μS/cm, 230 mL bottle
HI 7033L 84 μS/cm, 500 mL bottle
HI 8033L 84 μS/cm, 500 mL FDA bottle
HI 7034M 80000 μS/cm, 230 mL bottle
HI 7034L 80000 μS/cm, 500 mL bottle
HI 8034L 80000 μS/cm, 500 mL FDA bottle
HI 7035M 111800 μS/cm, 230 mL bottle
HI 7035L 111800 μS/cm, 500 mL bottle
HI 8035L 111800 μS/cm, 500 mL FDA bottle
HI 7039M 5000 μS/cm, 230 mL bottle
HI 7039L 5000 μS/cm, 500 mL bottle
HI 8039L 5000 μS/cm, 500 mL FDA bottle

PROBES

HI 76303 Platinum 4-ring conductivity probe with built-

in temperature sensor, DIN connector and 1 m
(3.3') cable

HI 3316D Resistivity probe with built-in temperature sen-

sor, DIN connector and 1 m (3.3') cable

OTHER ACCESSORIES

HI 710005 115 Vac/12 Vdc power adapter, US plug
HI 710006 230 Vac/12 Vdc power adapter, European plug
HI 740036 100 mL plastic beaker (6 pcs)
HI 740034 Cap for 100 mL beaker (6 pcs)
HI 76405 Electrode holder

CLEANING SOLUTIONS

HI 7061M Cleaning solution for general use, 230 mL
HI 7061L Cleaning solution for general use, 500 mL
HI 8061M Cleaning solution for general use in 230 mL

FDA bottle

HI 8061L Cleaning solution for general use in 500 mL

FDA bottle

12

13

WARRANTY

All Hanna Instruments meters are guaranteed for two years
against defects in workmanship and materials when used for their
intended purpose and maintained according to instructions.

The probes are guaranteed 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.

Hanna Instruments reserves the right to modify the design,

construction and appearance of its products without advance notice.

Recommendations for Users

Before using this product, make sure that it is entirely suitable for the environment in which they are used.
Operation of this instrument in residential area could cause unacceptable interferences to radio and TV

equipments, requiring the operator to take all necessary steps to correct interferences.
The metal band at the end of the sensor is sensitive to electrostatic discharges. Avoid touching this metal

band at all times. During calibration of instruments, ESD wrist straps should be worn to avoid possible
damage to the sensor by electrostatic discharge.

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 damages or burns, do not perform any measurement in microwave ovens.

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

MAN216 07/05