Instruction Manual
EC214
EC215 - EC215R
Bench
Conductivity
Meters
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 directives.
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 damage, notify your dealer.
Each meter is supplied complete with:
• Conductivity Probe (HI76300 for EC 214, HI76303 for EC 215
and EC 215R);
• Instruction Manual;
• 12VDC adapter (HI710005 or HI710006);
• Dust cover.
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
PRELIMINARY EXAMINATION ............................................................ 3
GENERAL DESCRIPTION .................................................................... 3
FUNCTIONAL DESCRIPTION EC 214 ................................................... 4
SPECIFICATIONS EC 214 .................................................................. 5
FUNCTIONAL DESCRIPTION EC 215 ................................................... 6
SPECIFICATIONS EC 215 .................................................................. 7
OPERATIONAL GUIDE ....................................................................... 8
CALIBRATION ................................................................................ 10
CONDUCTIVITY VS. TEMPERATURE CHART ......................................... 13
DETERMINATION OF THE TEMPERATURE
COEFFICIENT OF A SOLUTION (EC 215 & EC 215R) ........................... 14
PROBE MAINTENANCE ................................................................... 15
ACCESSORIES ............................................................................... 16
WARRANTY ................................................................................... 18
CE DECLARATION OF CONFORMITY .................................................. 19
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 DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
EC 214 and EC 215 are digital bench-top multirange conductivity
meters designed for simplicity of use in measuring electrical conductivity in liquids.
Four ranges of conductivity measurements are provided to cover every
application from deionized water to brine.
The calibration is made simple through the easy-to-operate front
panel knob for slope adjustment.
The conductivity probe does not require 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 EC 214.
With EC 215, 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%
through a knob on the front panel.
It is also available a model with recorder output feature: EC 215R.
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3
FUNCTIONAL DESCRIPTION EC 214FUNCTIONAL DESCRIPTION EC 214
FUNCTIONAL DESCRIPTION EC 214
FUNCTIONAL DESCRIPTION EC 214FUNCTIONAL DESCRIPTION EC 214
1) Liquid Crystal Display (LCD)
2) Conductivity calibration knob
3) 199.9 µS key, to select the range 0.0 to 199.9µS/cm
4) 19.99 mS key, to select the range 0.00 to 19.99 mS/cm
5) 199.9 mS key, to select the range 0.0 to 199.9mS/cm
6) 1999 µS key, to select the range 0 to 1999µS/cm
7) COND/C key, to select conductivity reading or temperature set-
ting for manual compensation
8) Temperature setting knob for manual compensation
9) ON/OFF switch
10) Power adapter socket
11) Probe connector
SPECIFICATIONS EC 214SPECIFICATIONS EC 214
SPECIFICATIONS EC 214
SPECIFICATIONS EC 214SPECIFICATIONS EC 214
Range 0.0 to 199.9 µS/cm
0 to 1999 µS/cm
0.00 to 19.99 mS/cm
0.0 to 199.9 mS/cm
Resolution 0.1 µS/cm
1 µS/cm
0.01 mS/cm
0.1 mS/cm
Accuracy ±1% Full Scale
(@20°C / 68°F) (excluding probe error)
Typical EMC ±1% Full Scale
Deviation
Calibration Manual single point through front knob
Temperature Manual from 0 to 50C
Compensation with ß fixed at 2%/C
Probe HI 76300
platinum 4-ring conductivity probe
with 1m (3.3') cable
(included)
Power Supply 12 VDC adapter
(HI710005 or HI710006 included)
Environment 0 to 50C (32 to 122F);
0-95% RH non-condensing
Dimensions 240x182x74 mm (9.4x7.1x2.9")
Weight 1.0 Kg (2.3 lb.)
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5
FUNCTIONAL DESCRIPTION EC 215FUNCTIONAL DESCRIPTION EC 215
FUNCTIONAL DESCRIPTION EC 215
FUNCTIONAL DESCRIPTION EC 215FUNCTIONAL DESCRIPTION EC 215
1) Liquid Crystal Display (LCD)
2) Conductivity calibration knob
3)
199.9 µS key, to select the range 0.0 to 199.9µS/cm
4) 19.99 mS key, to select the range 0.00 to 19.99 mS/cm
5) 199.9 mS key, to select the range 0.0 to 199.9mS/cm
6) 1999 µS key, to select the range 0 to 1999µS/cm
7) Temperature Coefficient setting knob
8) ON/OFF switch
9) Power adapter socket
10) Probe connector
11) Analog Output (EC 215R only)
SPECIFICATIONS EC 215SPECIFICATIONS EC 215
SPECIFICATIONS EC 215
SPECIFICATIONS EC 215SPECIFICATIONS EC 215
Range 0.0 to 199.9 µS/cm
0 to 1999 µS/cm
0.00 to 19.99 mS/cm
0.0 to 199.9 mS/cm
Resolution 0.1 µS/cm
1 µS/cm
0.01 mS/cm
0.1 mS/cm
Accuracy ±1% Full Scale
(@20°C / 68°F) (excluding probe error)
Typical EMC ±1% Full Scale
Deviation
Calibration Manual at single point, through front knob
Temperature Automatic from 0 to 50C
Compensation with adjustable β from 0 to 2.5%/C
Probe (included) HI 76303
platinum 4-ring conductivity probe
with temperature sensor and 1m (3.3') cable
Analog Output 0 to 5VCC not isolated analog output - 20mA max
(EC 215R only) Range Output
0.0 to 199.9µS/cm 0 to 5 VCC
0 to 1999µS/cm 0 to 5 VCC
0.00 to 19.99mS/cm 0 to 5 VCC
0.0 to 199.9mS/cm 0 to 5 VCC
Analog Output 0.1% of maximum displayed value
Accuracy (EC 215R only)
Analog Output ±2.5 mV
Resolution (EC 215R only)
Power Supply 12 VDC power adapter (
Environment 0 to 50C (32 to 122F);
0-95% RH non-condensing
Dimensions 240x182x74 mm (9.4x7.1x2.9")
Weight 1.0 Kg (2.3 lb.)
includedincluded
included)
includedincluded
6
7
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
Power connection
Plug the 12VDC adapter (HI710005 or HI710006) into the power
supply socket (#10 on page 4; #9 on page 6).
Note: make sure the main line is protected by a fuse.
Probe connection
Connect the conductivity probe to the socket provided (#11 on page
4; #10 on page 6).
Note: Make sure that the instrument has been calibrated before
taking conductivity measurements (see calibration paragraph).
Note: If possible, use plastic beakers to minimize EMC interferences.
TAKING CONDUCTIVITY MEASUREMENTS WITH EC 214
••
• switch the instrument on by pressing the ON/OFF
••
key.
••
• 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 beaker to
remove any air bubbles trapped inside the sleeve.
Take the temperature of the solution with a
CHECKTEMP or a glass thermometer.
••
• Press the “COND/C” key to select temperature
••
setting.
••
• Adjust the “TEMPERATURE” knob to display the temperature of the
••
solution on the LCD.
••
• Press the “COND/C” key to select conductivity
••
reading.
••
• Select the appropriate conductivity range.
••
Note: If the display shows "1", there is an over-range condition.
Select the next higher range.
••
• Allow a few minutes for the reading to stabilize. The LCD will
••
display the temperature compensated conductivity reading.
TAKING CONDUCTIVITY MEASUREMENTS WITH EC 215
••
• switch the instrument on by pressing the ON/OFF
••
key.
••
• 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 beaker
to remove any air bubbles trapped inside the
sleeve.
••
• Adjust the "TEMPERATURE COEFFICIENT" knob to the temperature
••
coefficient value of the solution (see determination of the temperature coefficient of a solution paragraph).
••
• Select the appropriate conductivity range.
••
Note: If the display shows "1", there is an over-range condition.
Select the next higher range.
••
• Allow a few minutes for the reading to stabilize. The LCD will
••
display the temperature compensated conductivity reading.
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9
CALIBRATIONCALIBRATION
CALIBRATION
CALIBRATIONCALIBRATION
The instrument should be re-calibrated at least once a month, or
when the probe is changed.
INITIAL PREPARATION
If you are measuring in the mS ranges, calibrate the meter using
HI7030 (or HI8030) conductivity solution (12.88 mS @ 25C) or
HI7034 (or HI8034) conductivity solution (80 mS @ 25C). For the
µS ranges, use HI7031 (or HI8031) conductivity solution (1413 µS
@25C) when calibrating in the range from 0 to 1999 µS or
HI7033 (or HI8033) conductivity solution (84 µS @ 25C) when
calibrating in the range from 0 to 199.9 µS.
Choose a solution with a conductivity value close to the solution to be
measured.
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 interferences.
PROCEDURE FOR EC 214:
• Pour a small quantity of the conductivity
solution, e.g. HI7030 or HI8030 (12.88
mS/cm @ 25C), into a plastic beaker.
• 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 beaker
to remove any air bubbles trapped inside the
sleeve. Take the temperature of the solution
with a CHECKTEMP or a glass thermometer.
• Press the “COND/C” key to select temperature
setting.
• Adjust the “TEMPERATURE” knob to display the temperature of
the solution on the LCD.
• Press the “COND/C” key to select conductivity
reading and select the appropriate range:
"199.9 µS" for HI7033/HI8033,
"1999µS" for HI7031/HI8031,
"19.99 mS" for HI7030/HI8030,
"199.9 mS" for HI7034/HI8034.
Note: If the display shows "1", there is an over-range condition.
Select the next higher range.
••
• Allow a few minutes for the reading to stabilize and adjust the
••
“CALIBRATION” knob to read (on the LCD) the value of the buffer
solution at 25C (77F), e.g. 12.88 mS/cm.
• All subsequent measurements will be referenced to 25C (77F).
• To reference the measurements to 20C (68F), adjust the “CALIBRATION” knob to read (on the LCD) the value of the buffer
30
0
I 7
H
solution at 20C (68F), e.g. 11.67 mS/cm. See conductivity vs.
temperature chart.
• Calibration is now complete and the instrument is ready for use.
0
3
0
I 7
PROCEDURE FOR EC 215:
H
• Pour a small quantity of the conductivity
solution, e.g. HI7030 or HI8030 (12.88
mS/cm @ 25C), into a plastic beaker.
• 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 beaker
to remove any air bubbles trapped inside the
sleeve.
• Adjust the "TEMPERATURE COEFFICIENT" knob to 2%/C.
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11
• Select the appropriate range:
"199.9 µS" for HI7033/HI8033,
"1999µS" for HI7031/HI8031,
"19.99 mS" for HI7030/HI8030,
"199.9 mS" for HI7034/HI8034.
Note: If the display shows "1", there is an over-range condition.
Select the next higher range.
• Allow a few minutes for the reading to stabilize and adjust the
“CALIBRATION” knob to read (on the LCD) the value of the buffer
solution at 25C (77F),e.g. 12.88 mS/cm.
CONDUCTIVITY VERSUSCONDUCTIVITY VERSUS
CONDUCTIVITY VERSUS
CONDUCTIVITY VERSUSCONDUCTIVITY VERSUS
TEMPERATURE CHARTTEMPERATURE CHART
TEMPERATURE CHART
TEMPERATURE CHARTTEMPERATURE 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.
Since a small difference in temperature causes a large change in
conductivity, the readings are usually normalized at 25C.
• All subsequent measurements will be referenced to 25C (77F).
• To reference the measurements to 20C (68F), adjust the “CALI-
BRATION” knob to read (on the LCD) the value of the buffer
solution at 20C (68F), e.g. 11.67 mS/cm. See conductivity vs.
temperature chart.
• Calibration is now complete and the instrument is ready for use.
CF 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
EC 214 manually compensates for temperature differences with a
fixed ß at 2%.
EC 215 automatically compensates for temperature differences with a
built-in circuitry. A knob is provided to adjust the temperature coefficient manually from 0% (without compensation) to 2.5% per degree
Celsius.
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DETERMINATION OF THE TEMPERATUREDETERMINATION OF THE TEMPERATURE
DETERMINATION OF THE TEMPERATURE
DETERMINATION OF THE TEMPERATUREDETERMINATION OF THE TEMPERATURE
COEFFICIENT OF A SOLUTIONCOEFFICIENT OF A SOLUTION
COEFFICIENT OF A SOLUTION
COEFFICIENT OF A SOLUTIONCOEFFICIENT OF A SOLUTION
(EC 215 & EC 215R)(EC 215 & EC 215R)
(EC 215 & EC 215R)
(EC 215 & EC 215R)(EC 215 & EC 215R)
• Immerse the probe into a sample of the solution and adjust the
“TEMPERATURE COEFFICIENT” knob to 0% (i.e. no compensation).
• Condition the sample and probe at 25C and note the conductivity
reading C25.
• Condition the sample and probe to a temperature tC which is
approximately 5C to 10C different from 25C and note the
conductivity reading Ct.
• The temperature coefficient ß of the solution is calculated with
the formula:
(Ct - C25)
ß = 100 x ---------------------------
(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 onsite measurements, the following procedure should be used:
PROBE MAINTENANCEPROBE MAINTENANCE
PROBE MAINTENANCE
PROBE MAINTENANCEPROBE MAINTENANCE
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 the probe, re-calibrate
the instrument.
The four ring platinum probe body
is in glass. For this reason great
care while handling the probe must
be taken.
• Immerse the probe into the test solution and turn the “TEMPERATURE COEFFICIENT” knob to 0% (no compensation).
• Allow the conductivity 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 10C. Wait for the conductivity reading to stabilize.
• Adjust the “TEMPERATURE COEFFICIENT” knob until the display
reads the value C as recorded earlier.
• The value indicated by the knob is the temperature coefficient of
the solution.
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ACCESSORIESACCESSORIES
ACCESSORIES
ACCESSORIESACCESSORIES
CONDUCTIVITY BUFFER SOLUTIONS:
HI 7030L 12880 µS/cm (µmho/cm), 460mL
HI 7030M 12880 µS/cm (µmho/cm), 230mL
HI 7031L 1413 µS/cm (µmho/cm), 460mL
HI 7031M 1413 µS/cm (µmho/cm), 230mL
HI 7033L 84 µS/cm (µmho/cm), 460 mL
HI 7033M 84 µS/cm (µmho/cm), 230 mL
HI 7034L 80000 µS/cm (µmho/cm), 460mL
HI 7034M 80000 µS/cm (µmho/cm), 230mL
HI 7035L 111800 µS/cm (µmho/cm), 460mL
HI 7035M 111800 µS/cm (µmho/cm), 230mL
HI 7039L 5000 µS/cm (µmho/cm), 460mL
HI 7039M 5000 µS/cm (µmho/cm), 230mL
CONDUCTIVITY BUFFER SOLUTIONS IN FDA APPROVED
BOTTLES:
HI 8030L 12880 µS/cm (µmho/cm), 460 mL
HI 8031L 1413 µS/cm (µmho/cm), 460 mL
HI 8033L 84 µS/cm (µmho/cm), 460 mL
HI 8034L 80000 µS/cm (µmho/cm), 460 mL
HI 8035L 111800 µS/cm (µmho/cm), 460 mL
HI 8039L 5000 µS/cm (µmho/cm), 460 mL
OTHER ACCESSORIES:
CHECKTEMPC Electronic thermometer (range: -50.0 to 150.0C)
HI710005 Voltage adapter from 115VAC to 12VDC
HI710006 Voltage adapter from 230VAC to 12VDC
HI 7400011 Base for bench meters
HI 740036 100mL plastic beakers (6 pcs)
HI 740034 Cap for 100mL beakers (6 pcs)
HI 740134 Dust cover
HI 76405 Electrode holder
ELECTRODE CLEANING SOLUTIONS
HI 7061M General Cleaning Sol., 230 mL
HI 7061L General Cleaning Sol., 460 mL
ELECTRODE CLEANING SOLUTIONS IN FDA APPROVED
BOTTLES
HI 8061M General Cleaning Sol., 230 mL
HI 8061L General Cleaning Sol., 460 mL
CONDUCTIVITY PROBES:
HI 76300 platinum 4-ring conductivity probe with 1m
(3.3') cable (for EC214).
HI 76303 platinum 4-ring conductivity probe with tem-
perature sensor and 1m (3.3') cable (for EC215).
16
17
WARRANTYWARRANTY
WARRANTY
WARRANTYWARRANTY
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 electrodes
and the probes are guaranteed for a period of six months. This
warranty is limited to repair or replacement free of charge.
Damage 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.
To validate your warranty, fill out and return the enclosed warranty
card within 14 days from the date of purchase.
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner,
Hanna Instruments Inc., 584 Park East Drive, Woonsocket, Rhode
Island, 02895 , USA.
CE DECLARATION OF CONFORMITYCE DECLARATION OF CONFORMITY
CE DECLARATION OF CONFORMITY
CE DECLARATION OF CONFORMITYCE 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 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 24VAC or
60VDC.
Use plastic beakers to minimize any EMC interferences.
To avoid damages or burns, do not perform any measurement in microwave ovens.
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MANEC215R2 05/01
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