Hanna Instruments HI 9835 User manual

Instruction Manual
HI 9835
Waterproof
EC/TDS/NaCl/°C Meter
for Lab and Field
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

32
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 76309 conductivity probe with 1 m (3.3') cable
•Batteries (4 x 1.5V AA alkaline)
•Instruction manual
•Rugged carrying case.
Note: Save all packing material until you are sure that the instrument
functions correctly. Any defective item must be returned in its
original packaging together with the supplied accessories.
HI 9835 is a portable microprocessor-based EC/TDS/NaCl/temperature
meter. The autoranging feature of the EC and TDS ranges automati-
cally sets the meter to the scale with the highest possible resolution.
The measurements are automatically (ATC) or manually (MTC) compen-
sated for temperature. The temperature coefficient value is user
selectable as well as the TDS conversion factor.
The temperature compensation can also be disabled to measure the
actual conductivity.
The housing is completely waterproof and built to stand the harsh
conditions of field use.
For extended time operations, this meter can be connected to an
external 12 Vdc power supply.
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION
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 the necessary information for correct
use of the instrument, as well as a precise idea of its versatility.
This instrument is in compliance with the directives.
PRELIMINARY EXAMINATION .................................................................. 3
GENERAL DESCRIPTION .......................................................................... 3
FUNCTIONAL DESCRIPTION..................................................................... 4
SPECIFICATIONS .................................................................................... 5
CONNECTIONS ....................................................................................... 6
TAKING MEASUREMENTS ....................................................................... 7
AUTORANGING ...................................................................................... 8
TEMPERATURE COMPENSATION .............................................................. 8
EC / TDS CALIBRATION .......................................................................... 9
NaCl CALIBRATION ............................................................................... 10
TEMPERATURE CALIBRATION ................................................................ 11
TEMPERATURE ADJUSTMENT ................................................................ 11
CONDUCTIVITY VS. TEMPERATURE CHART ............................................. 12
SETUP ................................................................................................. 13
BATTERY REPLACEMENT ....................................................................... 15
PROBE MAINTENANCE ......................................................................... 15
ACCESSORIES ...................................................................................... 16
WARRANTY .......................................................................................... 18
CE DECLARATION OF CONFORMITY ........................................................ 19
TABLE OF CONTENTS
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner.

54
SPECIFICATIONS
Range EC 0.00 to 29.99 μS/cm
(Autoranging) 30.0 to 299.9 μS/cm
300 to 2999 μS/cm
3.00 to 29.99 mS/cm
30.0 to 200.0 mS/cm
up to 500.0 mS/cm actual(*) conductivity
TDS 0.00 to 14.99 ppm
(Autoranging) 15.0 to 149.9 ppm
150 to 1499 ppm
1.50 to 14.99 g/L
15.0 to 100.0 g/L
up to 400.0 g/L actual(*) TDS (with 0.80 factor)
NaCl 0.0 to 400.0 %
Temp. 0.0 to 60.0 °C
Resolution EC 0.01 μS/cm (0.00 to 29.99 μS/cm)
0.1 μS/cm (30.0 to 299.9 μS/cm)
1 μS/cm (300 to 2999 μS/cm)
0.01 mS/cm (3.00 to 29.99 mS/cm)
0.1 mS/cm (over 30.0 mS/cm)
TDS 0.01 ppm (0.00 to 14.99 ppm)
0.1 ppm (15.0 to 149.9 ppm)
1 ppm (150 to 1499 ppm)
0.01 g/L (1.50 to 14.99 g/L)
0.1 g/L (over 15.0 g/L)
NaCl 0.1 %
Temp. 0.1°C
Accuracy EC ±1% of reading ± (0.05 μS/cm or 1 digit)
TDS ±1% of reading ± (0.03 ppm or 1 digit)
NaCl ±1% of reading
Temp. ±0.4°C
Typical EMC EC ±1% of reading
Deviation TDS ±1% of reading
NaCl ±1% of reading
Temp. ±0.1 °C
FUNCTIONAL DESCRIPTION
1) Power adapter socket
2) Probe connector
3) Liquid Crystal Display (LCD)
4) ON/OFF key, to turn the meter on and off
5) ALT key, to activate alternate key function
6) RANGE/FIXED key, to select measurement range or (with ALT)
freeze the current range on the LCD
7) CAL/CALT key, to enter calibration mode
8) ▼CFM key, to move down or (with ALT) confirm values
9) ATC/TC key, to select temperature compensation mode or (with
ALT) view the temperature coefficient value
10) ▲FNC key, to move up or (with ALT) enter setup mode (*) Actual conductivity (or TDS) is the conductivity (or TDS) value of a solution
without temperature compensation.

76
EC Calibration 1 point, with 6 memorized buffers
84,1413,5000,12880,80000,111800 μS/cm
NaCl Calibration 1 point, with HI 7037 buffer (optional)
Temperature 2 point, at 0 and 50°C
Calibration (plus ±1°C adjustment)
Temperature Automatic or Manual from 0 to 60°C
Compensation (can be disabled to measure actual conductivity)
Temperature Adjustable from 0.00 to 6.00 %/°C (EC and
Coefficient TDS only); default value is 1.90%/°C
TDS Factor Adjustable from 0.40 to 0.80 (default 0.50)
Probe HI 76309 4-ring probe with K=1 (nominal)
and built-in temperature sensor (included)
Auto-off After 5 minutes of non-use (can be disabled)
Power supply 4x1.5V AA alkaline type batteries (included),
or 12 Vdc adapter
Casing IP 67
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 196 x 80 x 60 mm (7.7 x 3.1 x 2.4")
Weight 500 g (1.1 lb.)
CONNECTIONS
Remove the back cover, unwrap the batter-
ies and install them while paying attention
to the polarity. Replace the back cover.
Alternatively, connect the voltage adapter to
the power socket.
Connect the conductivity probe to
the DIN connector located on the
top of the instrument. Tighten the
threaded ring.
Make sure the probe sleeve is prop-
erly inserted, as shown in the
figure.
Press the ON/OFF key to turn the meter on.
Immerse the probe into the solution to be tested.
The sleeve holes must be completely submerged.
Tap the probe repeatedly to remove any air bubbles
that may be trapped inside the sleeve.
If needed, press the RANGE key repeatedly until
the desired range (EC, TDS or NaCl) is selected on
the LCD.
Allow for the reading to stabilize. The upper
LCD displays the measure in the selected
range while the temperature is displayed on
the lower LCD.
Notes:
IIf the meter displays "----" the reading is out of range.
II If the reading is unstable, the stability indicator " " blinks.
III The "gm" indication on the LCD means "g/L".
IV Make sure the meter is calibrated before taking measurements.
VIf measurements are taken successively in different samples, it
is recommended to rinse the probe thoroughly with deionized
water before immersion in the samples.
VI To maximize battery life, the meter automatically switches off after 5
minutes of non-use. To reactivate the instrument press ON/OFF.
This feature can be disabled by entering the setup mode and
selecting the "AoF" item (see "Setup" section for details).
VII TDS reading is obtained multiplying the EC reading by the
TDS factor, which has a default value of 0.50. It is possible to
change the TDS factor in the 0.40 to 0.80 range by entering
the setup mode and selecting the "tdS" item (see "Setup"
section for details).
VIII When the use of an alternate function (FNC, CFM, GLP,FIXED,TC
and CALT) is requested, press and hold the ALT key first, and
then the second key.
TAKING MEASUREMENTS

98
EC/TDS CALIBRATION
EC/TDS calibration is a single point procedure. Selectable calibration
points are: 0.0, 84.0 μS/cm, 1413 μS/cm, 5.00 mS/cm, 12.88
mS/cm, 80.0 mS/cm,111.8 mS/cm.
To enter EC calibration, select the EC range and
press the CAL key.
Note: TDS reading is automatically derived from the EC reading and
no specific calibration for TDS is needed. Pressing CAL while TDS
range is selected has no effect.
Rinse the probe with some of the calibration solution or
deionized water. Immerse the probe into the solution.
The sleeve holes must be completely submerged. Tap
the probe repeatedly to remove any air bubbles that
may be trapped inside the sleeve.
For zero calibration, just leave the dry probe in air.
The indications "BUF" and "CAL" are dis-
played. The upper LCD shows the uncalibrated
EC reading. The lower LCD shows the buffer
value. The stability indicator " " blinks.
Select the desired value with the ▲
and ▼keys, if necessary.
When the " " symbol stops blinking, the
reading is stable. The "CON" indication starts
blinking on the LCD asking for confirmation.
Press ALT + CFM to confirm the calibration.
If everything is satisfactory, the meter displays the "Stor Good"
message and returns to measurement mode.
Notes
IIf the uncalibrated reading is too far from the expected value,
calibration is not recognized. The "CON" indication does not
appear; the " " and "BUF" symbols blink to warn the user.
II For best results choose a calibration solution with an EC value
as close as possible to the sample to be measured.
TEMPERATURE COMPENSATION
Three options of compensating temperature are available:
Automatic (Atc): The probe has a built-in temperature sensor; the
value of the temperature is used to automatically compensate the EC/
TDS reading using 25°C as reference temperature. This is the default
option.
Manual (Mtc): The temperature value, shown on the lower LCD, can
be manually set by the user with the up and down arrow keys. The
compensation is referenced at 25°C. The "°C" symbol blinks when this
option is active.
No Compensation (notc): The temperature reading shown on the
lower LCD is not taken into account. The reading displayed on the
upper LCD is the actual EC or TDS value. The "°C" and "%TC" symbols
blink when this option is active.
To select the desired option press the ATC key until
the option is briefly displayed on the LCD.
Note: The default compensation mode is ATC.
If temperature compensation is active, measurements are compen-
sated using a default temperature coefficient of 1.90 %/°C.
It is possible to select a different temperature coefficient (TC) in the
0.00 to 6.00 %/°C range by entering the setup mode and selecting
the "tc" item (see SETUP for details).
The current temperature coefficient can be
quickly viewed pressing ALT+TC. The value
is briefly displayed on the lower LCD.
The EC and TDS scales are autoranging. The meter automatically sets
the scale with the highest possible resolution.
By pressing ALT+FIXED, the autoranging
feature is disabled and the current range
is frozen on the LCD. "F1" symbol blinks
on the LCD.
To restore the autoranging option press ALT+FIXED again.
Note: Autoranging is automatically restored if the RANGE key is pressed,
if the setup or calibration modes are entered and if the meter is
turned off and back on again.
AUTORANGING

1110
TEMPERATURE CALIBRATION
(for technical personnel only)
The temperature calibration is a 2 point procedure, at 0 and 50°C.
• Immerse the probe in a 0°C temperature bath.
• Press ALT+CALT to enter temperature calibration mode.
• The lower LCD displays "0.0 °C"; "BUF" and "CAL" tags appear.
• When the reading is stable, "CON" symbol starts blinking.
• Press ALT+CFM to confirm. The lower LCD displays "50.0°C".
• Immerse the probe in a 50°C temperature bath.
• When the reading is stable, "CON" symbol starts blinking.
• Press ALT+CFM to confirm and return to normal operation.
TEMPERATURE ADJUSTMENT
The temperature reading can be manually fine-tuned by following this
procedure:
Press ALT+CALT to enter the temperature
calibration mode.
Press CAL to enter the temperature adjust-
ment mode. The upper and lower LCD will
display the current temperature reading.
Adjust the temperature reading on
the upper LCD using the arrow keys.
The maximum adjustment is ±1°C
around current reading.
Press ALT+CFM to confirm. The meter re-
turns to measurement mode and displays
the new temperature.
Note: Press ALT+CALT to escape without any changes.
Note: It is possible to enter the temperature adjustment mode only if
the probe is connected.
NaCl CALIBRATION
NaCl calibration is a single point procedure at 100.0% NaCl.
Use the HI 7037 calibration solution (sea water solution) as 100%
NaCl standard.
To enter NaCl calibration select the NaCl range and
press the CAL key.
Rinse the probe with some of the calibration solu-
tion or deionized water, then immerse it in HI 7037
solution. The sleeve holes must be completely sub-
merged. Tap the probe repeatedly to remove any
air bubbles that may be trapped inside the sleeve.
The "BUF" and "CAL" indications are dis-
played. The upper LCD shows the uncalibrated
NaCl reading in percentage. The lower LCD
shows "100".
When the " " symbol stops blinking, the
reading is stable. The "CON" indication starts
blinking on the LCD asking for confirmation.
Press ALT + CFM to confirm the calibration.
If everything is satisfactory, the meter displays the "Stor Good"
message and returns to measurement mode.
Note: If the uncalibrated reading is too far from the expected value,
the calibration is not recognized. The "CON" indication does not
appear; the " " and "BUF" symbols blink to warn the user.
Note: The meter uses 1.90%/°C compensation factor during calibra-
tion. If the setup item "tc" has been set to a different value,
when exiting calibration mode the value displayed on the upper
LCD could be different from the nominal calibration value.
III Use plastic beakers to minimize any EMC interference.
IV The meter uses 1.90%/°C compensation factor during calibra-
tion. If the setup item "tc" has been set to a different value,
when exiting the calibration mode the value displayed on the
upper LCD could be different from the solution nominal value.
VIt is possible to set the cell constant value directly without
following the calibration procedure. Enter the setup mode and
select "CEL" (see "Setup" section for details).

1312
The setup mode is used to view or change the instrument parameters.
To enter setup press ALT+FNC when the
meter is in measurement mode.
"Set" is displayed on the upper LCD. The
lower LCD displays the blinking code of the
current setup item.
Select the desired setup item using
the ▲or ▼key.
Press ALT+CFM to confirm.
Note: If ALT+FNC are pressed before item confirmation, the meter
will escape and return to measurement mode.
Once the desired setup item has been
selected, its current value blinks (if it is a
changeable parameter).
To change the value use the ▲or
▼key.
Press ALT+CFM to confirm.
Note: Press ALT+FNC before confirmation to escape without chang-
ing the previously set value.
SETUP
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 ex-
pressed as a relative change per degree Celsius at a particular
temperature, commonly as percent per °C.
The following table lists the temperature dependence of the HANNA
instruments®calibration solutions.
°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
CONDUCTIVITY VS TEMPERATURE CHART

1514
PROBE MAINTENANCE
After measurements, rinse the probe with clean water. If a more
thorough cleaning is required, remove the probe sleeve and clean the
probe with a cloth or a nonabrasive detergent.
Make sure to reinsert the sleeve onto the probe properly and in the
right direction.
After cleaning the probe, recalibrate the instrument.
When the batteries are inserted and no power adapter is connected,
the meter can recognize the following battery charge levels:
•Low battery - "LOBAT" indication is displayed on the LCD.
Backlight is automatically disabled and it is not possible to
enable it until new batteries are inserted or an external power
adapter is used. When "LOBAT" appears, batteries have typically
10% of their life left and the meter is still measuring properly.
•Very weak battery - The meter shuts off to avoid erroneous
operations.
Note: If the meter is not powered for several minutes (e.g. in dead
battery condition), the current date and time are lost.
Battery replacement must only take place in a safe area and using
1.5V alkaline AA type batteries.
In order to replace run down batteries, simply
remove the two screws on the rear cover of the
instrument and replace the four 1.5V AA bat-
teries with new ones, paying attention to the
correct polarity.
New batteries allow approximately 150 hours of continuous use.
A 12 Vdc power adapter can also be used.
It is recommended to use the HANNA volt-
age adapters that provide the proper polarity
configuration.
However, other adapters can be used. In this case, check the polarity
of the adapter before connecting it to the meter.
BATTERY REPLACEMENT
The following table lists the setup items, their valid range of values
and the factory settings (default):
Item Description Valid values Default
tc Temp. compensation coeff. 0.00 to 6.00 %/°C 1.90
tcE Temp. compensation mode Atc, Mtc, notc Atc
tdS TDS factor 0.40 to 0.80 0.50
CEL Cell constant (K) 0.500 to 1.700 1.000
Aof Auto-off enable On, OFF On
vEr Firmware release
Chr Battery level test
Notes
IOnce enabled, the Auto-off time is fixed at 5 minutes.
II When the battery level test is selected (Chr), the LCD will display
the remaining percentage of battery charge. 100% means fully
charged battery and 0% corresponds to the minimum battery
level that allows the meter to operate.
The battery charge level calculation is based on a typical
alkaline battery discharge curve.
If the meter is connected to an external power adapter and
"Chr" is selected, the LCD will display "LINE".

1716
OTHER ACCESSORIES
HI 76309 Stainless steel 4-ring conductivity probe with built-
in temperature sensor and 1 m (3.3') cable.
HI 76310 Platinum 4-ring conductivity probe with built-in
temperature sensor and 1 m (3.3') cable.
HI 710005 12 Vdc voltage adapter, US plug
HI 710006 12 Vdc voltage adapter, European plug
HI 710012 12 Vdc voltage adapter, UK plug
HI 710013 12 Vdc voltage adapter, South-african plug
HI 710014 12 Vdc voltage adapter, Australian plug
HI 740036 100 mL plastic beaker (6 pcs)
HI 740034 Cap for 100 mL beaker (6 pcs)
HI 76405 Electrode holder
CONDUCTIVITY CALIBRATION SOLUTIONS
HI 70030P 12880 μS/cm solution, 20 mL sachet (25 pcs.)
HI 7030L 12880 μS/cm solution, 500 mL bottle
HI 7030M 12880 μS/cm solution, 230 mL bottle
HI 70031P 1413 μS/cm solution, 20 mL sachet (25 pcs.)
HI 7031L 1413 μS/cm solution, 500 mL bottle
HI 7031M 1413 μS/cm solution, 230 mL bottle
HI 70033P 84 μS/cm solution, 20 mL sachet (25 pcs.)
HI 7033L 84 μS/cm solution, 500 mL bottle
HI 7033M 84 μS/cm solution, 230 mL bottle
HI 7034L 80000 μS/cm solution, 500 mL bottle
HI 7034M 80000 μS/cm solution, 230 mL bottle
HI 7035L 111800 μS/cm solution, 500 mL bottle
HI 7035M 111800 μS/cm solution, 230 mL bottle
HI 70039P 5000 μS/cm solution, 20 mL sachet (25 pcs.)
HI 7039L 5000 μS/cm solution, 500 mL bottle
HI 7039M 5000 μS/cm solution, 230 mL bottle
HI 7037L 100% NaCl standard solution, 500 mL bottle
PROBE CLEANING SOLUTIONS
HI 7061M General cleaning solution, 230 mL bottle
HI 7061L General cleaning solution, 500 mL bottle
ACCESSORIES

1918
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
electrodes and the probes are warranted for a period of six
months. This warranty is limited to repair or replacement free of
charge.
Damages due to accidents, 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.
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 interference to radio and TV
equipment, requiring the operator to take all necessary steps to correct interference.
The metal bands of the probe are sensitive to electrostatic discharges. Avoid touching these metal bands
at all times.
To maintain the EMC performance of this equipment the recommended cables must be used.
Any variation introduced by the user to the supplied equipment may degrade the instruments EMC
performance.
Toavoid electricalshock, do not use this instrument when voltage at the measurement surface exceeds 24
Vac or 60 Vdc.
To avoid damages or burns, do not perform any measurement in microwave ovens.
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