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.
This instrument is in compliance with
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 damage, notify your dealer.
Each meter is supplied complete with:
• HI 1332B plastic-body combination double-junction refillable
pH electrode with BNC connector and 1m (3.3') cable;
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
pH 209 bench-top pH meter is designed for simplicity of use.
It features a large easy-to-read liquid crystal display (LCD) and user
friendly keyboard.
The pH calibration is made simple through the easy-to-operate front
panel knobs for offset and slope adjustment.
A front knob is provided for easy manual temperature compensation of
the pH reading.
pH 209 can also measure ion concentration (ISE) and ORP (Oxidation
Reduction Potential) in the mV range.
The range selection (pH, mV or C for temperature compensation) is
made simple through the front membrane keyboard.
The large LCD is provided with arrows that quickly and clearly indicate
the selected range.
It is also available the model pH209R with recorder output feature.
2
3
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
1) Liquid Crystal Display (LCD)
2) pH slope adjustment knob
3) pH offset adjustment knob
4) pH range selection key
5) mV range selection key
6) C range selection key
7) Temperature setting knob
8) ON/OFF switch
9) Power adapter socket
10) BNC electrode connector
11) Electrode reference socket
12) Analog output (PH209R only)
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
RangepH0.00 to 14.00
mV±1999
ResolutionpH0.01
mV1
AccuracypH±0.01
(@20°C/68°F)mV± 1
Typical EMCpH±0.03
DeviationmV± 2
CalibrationManual, at 2 points through
offset and slope knobs
TemperatureManual from 0 to 100C
Compensation(32 to 212F)
Electrode (included)HI 1332B plastic body, combination,
double junction refillable pH electrode
with BNC and 1m (3.3') cable
Analog output0 to 5V
(PH09R only)pH0 to 14
mV-1999 to +1999
temp.always 0
Input Impedance1012 ohm
Power12 VDC adapter
(HI710005 or HI710006 included)
Environment0 to 50C (32 to 122F);
0-95% RH not condensing
Dimensions240x182x74 mm (9.4x7.1x2.9")
Weightapprox. 1.0 Kg (2.3 lb.)
4
5
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
Power connection
Plug the 12VDC adapter (HI710005 or HI710006) into the power
supply socket (#9 on page 4).
Note: make sure the main line is protected by a fuse.
Electrode connection
For combination pH or ORP electrodes (with internal reference) connect the electrode's BNC to the socket provided (#10 on page 4).
For an electrode with a separate reference, connect the measuring
electrode's BNC to the BNC socket (#10 on page 4) and the reference
electrode's jack to the socket provided (#11 on page 4).
Note: to prevent damage to the electrode, remove the pH electrode
from the solution before turning the meter off.
If the meter is OFF, detach the electrode from the meter before
immersing the electrode in the storage solution.
TAKING pH MEASUREMENTS
Make sure that the instrument has been calibrated for pH before
taking pH measurements.
• Switch the instrument on by pressing the ON/OFF
switch.
• Press the pH key to display the pH measurement.
• The display shows the pH value of the test solution compensated
for temperature.
If measurements are taken in different samples successively, it is
recommended that the electrode be rinsed thoroughly for better conditioning and to eliminate cross-contamination of the sample.
For the rinsing process, it is recommended to use a liberal amount of
the next solution to be measured.
TAKING ORP MEASUREMENTS
pH 209 has the capability to take ORP measurements, using an ORP
electrode. Hanna Instruments offers a variety of ORP electrodes for this
purpose (see accessories). Contact your Dealer for more information.
• Connect the ORP electrode to the meter and
submerge the tip (4 cm / 1½") into the sample
to be tested.
Note: ORP measurements are taken without temperature compensa-
tion.
(1½
4 cm
")
• Immerse the electrode tip (4 cm/1½") into the
sample and shake briefly.
• Take the temperature of the solution with a
ChecktempC or a glass thermometer (e.g.25C).
• Press the C key to display temperature setting on the LCD and
adjust the temperature knob to display the temperature of the
sample.
6
(1½
4 cm
")
• Press the mV key to enter the mV mode. Allow a few
minutes for the reading to stabilize.
• The display will indicate the mV value (positive or negative).
AFTER MEASUREMENTS
• Press the ON/OFF switch again to switch the instrument off.
7
pp
H CALIBRATIONH CALIBRATION
p
H CALIBRATION
pp
H CALIBRATIONH CALIBRATION
IMPORTANT
The instrument's pH range should be re-calibrated:
• When the meter is new.
• Whenever the pH electrode is replaced.
• At least once a month.
• After use in aggressive chemicals.
• After cleaning procedure and changing the reference electrolyte.
• For greatest accuracy.
INITIAL PREPARATION
Pour small quantities (up to 4cm / 1½" level)
of pH 7.01 (HI7007 or HI8007) and pH4.01
(HI7004 or HI8004) or pH 10.01 (HI7010 orHI8010) solution into clean beakers. If possible use plastic beakers to minimize any EMC
interferences.
If you are measuring in the acid range, use pH4.01 as second buffer;
if you are measuring in the alkaline range, use pH10.01 as second
buffer.
For accurate calibration, use two bea-
RINSE
kers for each buffer solution; the first
for rinsing the electrode, the second
HI 7007
for calibration. In this way, contamination of the buffer is minimized.
Note: the electrode should be submerged approximately 4 cm (1½")
into the solution.
4
0
0
I 7
H
HI 7004HI 7007
CALIBRATION
HI 7007
PROCEDURE
Note: If you need to calibrate to NBS standards, use pH 6.86 (HI7006
or HI8006) and pH 9.18 (HI7009 or HI8009) instead of
pH7.01 and 10.01 respectively.
Use a ChecktempC or a glass thermometer as reference thermometer.
• Note the temperature of the buffer solution using a
ChecktempC or a glass thermometer (e.g.20C).
• Press the C key to select temperature setting.
• Adjust the Temperature knob until the LCD shows the noted temperature.
• Press the pH key to select pH measurement.
• Wait 1-2 minutes and adjust the OFFSET knob until display shows
the pH value at the noted temperature (see the pH versus temperature chart).
• Rinse and immerse the pH electrode in pH 4.01/pH 10.01 buffer
and shake briefly.
• Wait 1-2 minutes and adjust the SLOPE knob until display shows
the pH value at the noted temperature (see the pH versus temperature chart).
• Switch the instrument on by pressing the ON/OFF switch.
• Rinse and immerse the pH electrode in pH 7.01
buffer and shake briefly. Wait 1 or 2 minutes for
the reading to stabilize.
8
(1½
4 cm
")
• The pH calibration is now complete.
9
PH VALUES AT VARIOUS TEMPERATURESPH VALUES AT VARIOUS TEMPERATURES
PH VALUES AT VARIOUS TEMPERATURES
PH VALUES AT VARIOUS TEMPERATURESPH VALUES AT VARIOUS TEMPERATURES
Temperature has an effect on pH. The calibration buffer solutions are
affected by temperature changes to a lesser degree than normal
solutions.
For manual temperature calibration please refer to the following chart.
TEMPpH VALUES
°C°F4.016.867.019.1810.01
0
32
4.01
6.98
7.13
9.46
10.32
5
41
4.00
6.95
7.10
9.39
10.24
10
50
4.00
6.92
7.07
9.33
10.18
15
59
4.00
6.90
7.04
9.27
10.12
20
68
4.00
6.88
7.03
9.22
10.06
25
77
4.01
6.86
7.01
9.18
10.01
30
86
4.02
6.85
7.00
9.14
35
95
4.03
6.84
6.99
9.10
40
104
4.04
6.84
6.98
9.07
45
113
4.05
6.83
6.98
9.04
50
122
4.06
6.83
6.98
9.01
55
131
4.07
6.84
6.98
8.99
60
140
4.09
6.84
6.98
8.97
65
149
4.11
6.85
6.99
8.95
70
158
4.12
6.85
6.99
8.93
9.96
9.92
9.88
9.85
9.82
9.79
9.77
9.76
9.75
ELECTRODE CONDITIONINGELECTRODE CONDITIONING
ELECTRODE CONDITIONING
ELECTRODE CONDITIONINGELECTRODE CONDITIONING
AND MAINTENANCEAND MAINTENANCE
AND MAINTENANCE
AND MAINTENANCEAND MAINTENANCE
Note: to prevent damage to the electrode, remove the pH electrode
from the solution before turning the meter off.
If the meter is OFF, detach the electrode from the meter before
immersing the electrode in the storage solution.
Reference
Filling Hole
Reference
Filling Hole
Sensitive
Wire
Reference
Wire
Reference
Junction
Glass
Bulb
Plastic Body
pH Electrode
Glass Body
pH Electrode
Reference
Wire
Sensitive
Wire
Reference
Junction
Glass
Bulb
For instance, if the buffer temperature is 25C, the display should
show pH 4.01, 7.01 or 10.01 at pH 4, 7 or 10 buffers, respectively.
At 20C, the display should show pH 4.00, 7.03 or 10.06. The meter
reading at 50C will then be 4.06, 6.98 or 9.82.
10
Reference
Wire
Reference
Junction
Platinum or
Gold tip
Plastic Body
ORP Electrode
Reference
Wire
ORP Electrode
Glass Body
Reference
Junction
Platinum or
Gold tip
PREPARATION
Remove the protective cap.
DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal
with electrodes and they will disappear when rinsed with water.
During transport tiny bubbles of air may form inside the glass bulb
affecting proper functioning of the electrode. These bubbles can be
removed by "shaking down" the electrode as you would do with a
glass thermometer.
If the bulb and/or junction is dry, soak the electrode in HI 70300 or
HI 80300
Storage Solution for at least one hour.
11
For refillable electrodes:
If the filling solution (electrolyte) is more than 2½ cm (1") below the
fill hole, add HI 7082 or HI 8082 3.5M KCl Electrolyte Solution for
double junction or HI 7071 or HI 8071 3.5M KCl+AgCl Electrolyte
Solution for single junction electrodes.
For a faster response, unscrew the fill hole screw during measurements.
For AmpHel® electrodes:
If the electrode does not respond to pH changes, the battery is run
down and the electrode should be replaced.
MEASUREMENT
Rinse the electrode tip with distilled water. Immerse the tip (bottom 4
cm /1½") in the sample and stir gently for a few seconds.
For a faster response and to avoid cross contamination of the samples,
rinse the electrode tip with a few drops of the solution to be tested,
before taking measurements.
STORAGE
To minimize clogging and assure a quick response time, the glass bulb
and the junction should be kept moist and not allowed to dry out.
Replace the solution in the protective cap with a few drops of HI 70300
or HI 80300 Storage Solution or, in its absence, Filling Solution
(HI 7071 or HI 8071 for single junction or HI 7082 or HI 8082 for
double junction electrodes). Follow the Preparation Procedure above
before taking measurements.
Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER.
PERIODIC MAINTENANCE
Inspect the electrode and the cable. The cable used for connection to
the meter must be intact and there must be no points of broken
insulation on the cable or cracks on the electrode stem or bulb.
Connectors must be perfectly clean and dry. If any scratches or cracks
are present, replace the electrode. Rinse off any salt deposits with
water.
For refillable electrodes:
Refill the reference chamber with fresh electrolyte (HI 7071 or HI 8071
for single junction or HI 7082 or HI 8082 for double junction electrodes). Allow the electrode to stand upright for 1 hour.
Follow the Storage Procedure above.
CLEANING PROCEDURE
GeneralSoak in Hanna HI 7061 or HI 8061 General Cleaning
Solution for approximately ½ hour.
Removal of films, dirt or deposits on the membrane/junction:
-
Protein
-
Inorganic
-
Oil/grease
IMPORTANT: After performing any of the cleaning procedures rinse
the electrode thoroughly with distilled water, refill the reference chamber with fresh electrolyte (not necessary for gel-filled electrodes) and
soak the electrode in HI 70300 or HI 80300 Storage Solution for at
least 1 hour before taking measurements.
TROUBLESHOOTING
Evaluate your electrode performance based on the following.
• Noise (Readings fluctuate up and down) could be due to:
– Clogged/Dirty Junction: Refer to the Cleaning Procedure above.
– Loss of shielding due to low electrolyte level (in refillable
• Dry Membrane/Junction: Soak in HI 70300 or HI 80300 Storage Solution for at least 1 hour.
• Drifting: Soak the electrode tip in warm (approx. 50-60C) HannaHI 7082 or HI 8082 Solutions for one hour and rinse the tip
with distilled water. Refill with fresh HI 7071 or HI 8071 for
single junction electrodes and HI 7082 or HI 8082 for double
junction electrodes (refillable electrodes only).
• Low Slope: Refer to the cleaning procedure above.
• No Slope: Check the electrode for cracks in glass stem or bulb
and replace the electrode.
• Slow Response/Excessive Drift: Soak the tip in HI 7061 or
HI 8061 Solutions for 30 minutes, rinse thoroughly in distilled
water and then follow the Cleaning Procedure above.
Soak in Hanna HI 7073 or HI 8073 Protein Cleaning
Solution for 15 minutes.
Soak in Hanna HI 7074 or HI 8074 Inorganic Cleaning Solution for 15 minutes.
Rinse with Hanna HI 7077 or HI 8077 Oil and Fat
Cleaning Solution.
electrodes only): refill with fresh HI 7071 or HI 8071 for
single junction or HI 7082 or HI 8082 for double junction
electrodes.
12
13
TEMPERATURE-RESISTANCE CORRELATION FORTEMPERATURE-RESISTANCE CORRELATION FOR
20
0+10+20+30+40+50+60+70+80+90
C
TEMPERATURE-RESISTANCE CORRELATION FOR
TEMPERATURE-RESISTANCE CORRELATION FORTEMPERATURE-RESISTANCE CORRELATION FOR
HANNA HANNA
HANNA
HANNA HANNA
pp
H SENSITIVE GLASSH SENSITIVE GLASS
p
H SENSITIVE GLASS
pp
H SENSITIVE GLASSH SENSITIVE GLASS
The resistance of glass electrodes partially depends on the temperature.
The lower the temperature, the higher the resistance. It takes longer time
for the reading to stabilize if the resistance is higher. In addition, the
response time will suffer to a greater degree at temperatures below 10C.
Ω
Ω
9
2x10
-10
9
1x10
-10
8
-10
2x10
8
1x10
-10
7
2x10
-10
-10
7
1x10
-10
-20-
-20 -10 0 +10 +20+30+40 +50 +60 +70 +80 +90 C
°
Since the resistance of the pH electrode is in the range of 200 Mohm,
the current across the membrane is in the pico Ampere range. Large
currents can disturb the calibration of the electrode for many hours.
For these reasons high humidity environments, short circuits andstatic discharges are detrimental to a stable pH reading.
The pH electrode's life also depends on the temperature. If constantly
used at high temperatures, the electrode life is drastically reduced.
Typical Electrode Life
Ambient Temperature1- 3 years
90 °CLess than 4 months
120°CLess than 1 month
High concentrations of sodium ions interfere with readings in alkaline
solutions; the pH at which the interference starts to be significant
depends upon the composition of the glass. This interference is the
alkaline error and causes the pH to be underestimated. Hanna's glass
formulations have the indicated characteristics.
Alkaline Error
Sodium Ion Correction for the Glass at 20-25°C
ConcentrationpH Error
0.1 Mol L-1 Na
1.0 Mol L-1 Na
+
+
14
13.00
13.50
14.00
12.50
13.00
13.50
14.00
0.10
0.14
0.20
0.10
0.18
0.29
0.40
ACCESSORIESACCESSORIES
ACCESSORIES
ACCESSORIESACCESSORIES
pH CALIBRATION SOLUTIONS
HI 70004P pH 4.01 Buffer Sachets, 20mL, 25 pcs
HI 70007P pH 7.01 Buffer Sachets, 20mL, 25 pcs
HI 70010P pH 10.01 Buffer Sachets, 20mL, 25 pcs
HI 7004L pH 4.01 Buffer Solution, 460 mL
HI 7006L pH 6.86 Buffer Solution, 460 mL
HI 7007L pH 7.01 Buffer Solution, 460 mL
HI 7009L pH 9.18 Buffer Solution, 460 mL
HI 7010L pH 10.01 Buffer Sol., 460 mL
HI 8004L pH 4.01 Buffer Solution in FDA approved bottle, 460 mL
HI 8006L pH 6.86 Buffer Solution in FDA approved bottle, 460 mL
HI 8007L pH 7.01 Buffer Solution in FDA approved bottle, 460 mL
HI 8009L pH 9.18 Buffer Solution in FDA approved bottle, 460 mL
HI 8010L pH 10.01 Buffer Solution in FDA approved bottle, 460 mL
ELECTRODE STORAGE SOLUTIONS
HI 70300L Storage Solution, 460 mL
HI 80300L Storage Solution in FDA approved bottle, 460 mL
ELECTRODE CLEANING SOLUTIONS
HI 70000P Electrode Cleaning Sachets, 20 mL, 25 pcs
HI 7061L General Cleaning Sol., 460 mL
HI 7073L Protein Cleaning Sol., 460mL
HI 7074L Inorganic Cleaning Sol., 460mL
HI 7077L Oil & Fat Cleaning Sol.,460 mL
HI 8061L General Cleaning Solution in FDA approved bottle, 460 mL
HI 8073L Protein Cleaning Solution in FDA approved bottle, 230 mL
HI 8077L Oil & Fat Cleaning Solution in FDA approved bottle,460mL
REFILL ELECTROLYTE SOLUTIONS
HI 70713.5M KCl + AgCl Electrolyte, 4x50mL, for single junc-
tion electrodes
HI 70721M KNO3 Electrolyte, 4x50 mL
HI 70823.5M KCl Electrolyte, 4x50 mL, for double junction elec-
trodes
HI 8071 3.5M KCl + AgCl Electrolyte in FDA approved bottle,
4x50mL, for single junction electrodes
HI 8072 1M KNO3 Electrolyte in FDA approved bottle, 4x50 mL
HI 8082 3.5M KCl Electrolyte in FDA approved bottle, 4x50 mL, for
double junction electrodes
15
ORP PRETREATMENT SOLUTIONS
95
HI 7091LReducing Pretreatment Solution, 460 mL
HI 7092LOxidizing Pretreatment Solution, 460 mL
pH ELECTRODES
All electrodes part numbers ending in B are supplied with a BNC
connector and 1 m (3.3') cable.
Plastic-body (Ultem®), gel-filled, combination gold ORP electrode.
Use: general purpose.
12 mm
0.5"
HI 4430
120 mm
"S"VERSION
4.7"
FC 911
18
110 mm
4.3"
Ultem® is registered Trademark of "General Electrics Co."
Kynar® is registered Trademark of "Pennwalt Corp."
19
Extension cables for screw-type electrodes (screw to BNC adapter)
HI7855/1Extension cable 1m (3.3') long
HI7855/3Extension cable 3m (9.9') long
HI7855/5Extension cable 5m (16.5') long
HI7855/10 Extension cable 10m (33') long
HI7855/15 Extension cable 15m (49.5') long
HI 7855 SERIES CABLE CONNECTORS
CONNECTOR AND 3.0 mm (0.12") CABLE WITH BNC
CONNECT TO
SCREW TYPE
ELECTRODES
CONNECT TO THE
BNC SOCKET
OF THE METER
OTHER ACCESSORIES
HI710005Voltage adapter from 115 VAC to 12 VDC
HI710006Voltage adapter from 230 VAC to 12 VDC
ChecktempC Pocket-size thermometer (range -50.0 to 150.0C)
HI 76405Electrode holder
HI 8427pH and ORP electrode simulator with 1 m (3.3') coaxial
cable ending in female BNC connectors
HI 931001 pH and ORP electrode simulator with LCD and 1 m
(3.3') coaxial cable ending in female BNC connectors
ELECTRODE APPLICATIONELECTRODE APPLICATION
ELECTRODE APPLICATION
ELECTRODE APPLICATIONELECTRODE APPLICATION
REFERENCE GUIDEREFERENCE GUIDE
REFERENCE GUIDE
REFERENCE GUIDEREFERENCE GUIDE
ApplicationElectrodes
1. AquariumHI 1332B, HI 1911B
2. Bath-waterHI 1910B, HI 1130B
3. BeerHI 1131B
4. BreadHI 2031B, F C 200B
5. CheeseFC 200B
6. Dairy productsFC 911B, FC 100B
7. Dirty waterHI 1910B, HI 1912B
8. EmulsionsHI 1053B
9. EnvironmentHI 1230B
10. FlasksHI 1331B
11. Food industry general useFC 911B, FC 100B
12. FruitFC 200B, F C 220B
13. Fruit juices, organicFC 210B
14. Galvanizing waste solutionHI 1130B, HI 1912B
15. Heavy-duty applicationsHI 1135B
16. High purity waterHI 1053B
17. HorticultureHI 1053B, FC 200B
18. In-line applicationsHI 1134B, HI 1135B, HI 2114B, HI 2910B
19. Laboratory general useHI 1131B, HI 1230B, HI 1332B, HI 1330B
20. LeatherHI 1413B
21. Lemon juiceFC100B
22. MeatFC 200B, HI2031B
23. Micro plate sampling of less thanHI1083B
100 mL
24. Milk and YogurtFC 210B
25. PaintsHI 1053B
26. PaperHI 1413B
27. Photographic chemicalsHI 1230B
28. Quality controlHI 1332B
29. SausagesFC 200B, HI 2031B
30. Semisolid productsHI 2031B
31. SkinHI 1413B
32. Soil samplesH I1230B
33. SolventsHI 1043B
34. Strong acidHI 1043B
35. Submersion applicationHI 1130B
36. Surface measurementsHI 1413B
37. Swimming poolH I1130B, HI 2114B, HI 2910B
38. Titrations with constantHI 1131B
temperature range
39. Titrations with wide temperatureH I1131B
range
40. Very high humidityFC 911B, HI 1912B, H I 1911B
41. Vials and test tubeHI 1330B
42. Wine processingFC 220B
20
21
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 electrodesand 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 this product, make sure that it is entirely suitable for the environment in which it is used.
Operation of this instrument in residential area could cause unacceptable interferences to radio and TV equipment,
requiring the operator to take all necessary steps to correct interferences.
The glass bulb at the end of the electrode is sensitive to electrostatic discharges. Avoid touching this glass bulb at all
times.
During calibration of instruments, ESD wrist straps should be worn to avoid possible damage to the electrode by
electrostatic discharge.
To maintain the EMC performance of this equipment, the recommended cables noted in the user's manual must be
used.
Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance.
To avoid electrical shock, do not use this instrument when voltages at the measurement surface exceed 24VAC or 60VDC.
To avoid damage or burns, do not perform any measurement in microwave ovens.
22
23
HANNA LITERATUREHANNA LITERATURE
HANNA LITERATURE
HANNA LITERATUREHANNA LITERATURE
Hanna publishes a wide range of catalogs and handbooks for
an equally wide range of applications.
The reference literature currently covers areas such as:
• Water Treatment
• Process
• Swimming Pools
• Agriculture
• Food
• Laboratory
• Thermometry
and many others. New reference material is constantly being
added to the library.
For these and other catalogs, handbooks and leaflets, contact
your dealer or the Hanna Customer Service nearest to you. To
find the Hanna Office in your vicinity, check our home page at
www.hannainst.com.
http://www.hannainst.com
MANPH209R2 05/01
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