Hanna Instruments HI 9835 User manual

Instruction Manual
HI 9835
Autoranging
Portable Waterproof
Microprocessor
EC/TDS/NaCl/°C Meter
Manufacturers since 1978 This Instrument is in
Compliance with the CE Directives

2
Dear Customer,
Thank you for choosing a Hanna product.
Please read this instruction manual carefully before using the instru-
ment.
This manual will provide you with the necessary information for a
correctuseoftheinstrument,aswellasapreciseideaofitsversatility.
Ifyou needadditional technicalinformation, donot hesitateto e-mail
us at [email protected].
These instruments are in compliance with directives
EN 50081-1, EN 50082-1 and EN 61010-1.
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 CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
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.
Visit our Internet Home Page:
http://www.hannainst.com

3
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:
• HI76309Conductivity/TDS probe
•AA size Alkaline Batteries (4 pcs)
•Rugged Carrying Case.
Note:Saveallpackingmaterialuntilyouaresurethattheinstrument
functions correctly. Any defective item must be returned in its
original packaging together with the supplied accessories.
HI 9835 is a waterproof portable microprocessor-based Conductivity/
TDS/NaCl/temperaturemeter.
The autoranging feature of the EC and TDS ranges automatically sets
the meter to the scale with the highest possible resolution.
Themeasurementsareautomatically(ATC)ormanually (MTC) compen-
sated for temperature. The temperature coefficient value is user
selectable. It is possible to disable the temperature compensation and
measure the actual conductivity.
The meter is equipped with a stability indicator.
The Battery Error Preventing System (BEPS) switches the meter off
when the batteries are too weak to support proper function.
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION

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FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
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 alternate key function
6) RANGE / FIXED key, to select measurement range or (with ALT)
to 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) to view the temperature coefficient value
10)"FNC key, to move up or (with ALT) enter setup mode

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SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
Range EC 0.00 to 29.99 µS/cm
(Autoranging) 30.0to 299.9µS/cm
300 to 2999 µS/cm
3.00to 29.99mS/cm
30.0to 200.0mS/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 0.80factor)
NaCl 0.0 to 400.0 %
Temp. 0.0 to 60.0 °C
Resolution EC 0.01µS/cm (from0.00 to29.99 µS/cm)
0.1µS/cm (from30.0 to 299.9 µS/cm)
1 µS/cm (from 300 to 2999 µS/cm)
0.01mS/cm (from3.00 to 29.99 mS/cm)
0.1mS/cm (over30.0 mS/cm)
TDS 0.01 ppm (from 0.00 to 14.99 ppm)
0.1 ppm (from 15.0 to 149.9 ppm)
1 ppm (from 150 to 1499 ppm)
0.01 g/L (from 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,
whichever greater)
TDS ±1% of reading ± (0.03 ppm or 1 digit,
whichever greater)
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
(*) Actual conductivity (or TDS) is the non-temperature compensated conductivity (or
TDS) value of a solution.

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EC Calibration 1 pointwith 6 memorized buffers
84,1413,5000,12880,80000,111800µS/cm
NaCl Calibration 1point with HI 7037 buffer (optional)
Temperature 2points 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 0.00 to 6.00 %/°C (for EC and TDS only)
Coefficient Default value is 1.90%/°C
TDSFactor 0.40 to 0.80 (default value is 0.50)
Probe HI 76309 4-ring probe, K=1 nominal and
built-in temperature sensor (included)
Auto Off After 5 minutes (can be disabled)
Powersupply 4x1.5VAA alkaline typebatteries (included),or
12 VDC adapter
Casing IP 67
Environment 0 to 50°C ; 100% RH
Dimensions 196 x 80 x 60 mm (7.7 x 3.1 x 2.4")
Weight 500 g (18 oz)
CONNECTIONSCONNECTIONS
CONNECTIONSCONNECTIONS
CONNECTIONS
Removetheback cover,unwrapthe batteries
and install them while paying attention to
the polarity. Replace the back cover.
Alternatively, connect the voltage adapter to
the power socket.
Connect the EC/TDS probe to the
7-pin connector located on the top
of the instrument. Tighten the
threaded ring.
Makesuretheprobesleeveisprop-
erlyinserted,asshowninthefigure.

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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.
Taptheproberepeatedlytoremoveanyairbubbles
that may be trapped inside the sleeve.
If needed, press the RANGE key repeatedly until
the desired range (EC, TDS, 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 Makesure the meteris calibratedbeforetaking measurements.
VIf measurements are taken successively in different samples, to
have accurate readings it is recommended to rinse the probe
thoroughlywithdeionizedwaterbeforeimmersioninthesamples.
VI To maximize battery life, the meter is automatically switched off
after 5 minutes of non-use. To reactivate the instrument press
the ON/OFF key. This feature can be disabled by entering the
setup mode and selecting the "AoF" item (see SETUP for de-
tails).
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 for
details).
VIII Whentheuseofanalternatefunction(FNC,CFM,GLP,FIXED,TC
and CALT) is requested, press and hold the ALT key first and
then the second key.
TAKING MEASUREMENTSTAKING MEASUREMENTS
TAKING MEASUREMENTSTAKING MEASUREMENTS
TAKING MEASUREMENTS

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TEMPERATURE COMPENSATIONTEMPERATURE COMPENSATION
TEMPERATURE COMPENSATIONTEMPERATURE COMPENSATION
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
compensationis referencedat 25°C.The "°C"symbol blinkswhen 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.
BypressingALT+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: AutorangingisautomaticallyrestorediftheRANGEkeyispressed,
ifthesetup or calibrationmodesareentered and ifthemeteris
turned off and back on again.
AUTORANGINGAUTORANGING
AUTORANGINGAUTORANGING
AUTORANGING

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EC/TDS CALIBRATIONEC/TDS CALIBRATION
EC/TDS CALIBRATIONEC/TDS CALIBRATION
EC/TDS CALIBRATION
Calibration is a 1-point procedure. Selectable calibration points are:
0.0,84.0µS,1413µS,5.00mS,12.88mS,80.0mS,111.8mS.
Toenter EC calibrationselectthe ECrangeand 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.TheupperLCDshowstheuncalibrated
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
readingisstable.The "CON"indicationstarts
blinking on the LCD asking for confirmation.
PressALT+CFMtoconfirmthecalibration.
If everything is satisfactory, the meter displays the "Stor Good" mes-
sage 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 signal wrong or
contaminated calibration solution.
II For best results choose an EC buffer value close to the sample
to be measured.

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NN
NN
Naa
aa
aCC
CC
Cllll lCALIBRATIONCALIBRATION
CALIBRATIONCALIBRATION
CALIBRATION
Calibration is 1-point at 100.0% NaCl. Use the HI 7037 calibration
solution (sea water solution) as a 100% NaCl standard solution.
To enter NaCl calibration select the NaCl range and
press the CAL key.
Rinse the probe with some of the calibration solution or
deionized water. Immerse the probe into HI 7037 solu-
tion. The sleeve holes must be completely submerged.
Taptheproberepeatedlyto remove anyairbubblesthat
may be trapped inside the sleeve.
The indications "BUF" and "CAL" are dis-
played.TheupperLCDshowstheuncalibrated
NaCl reading in percentage. The lower LCD
shows"100".
When the " " symbol stops blinking, the
readingisstable.The "CON"indicationstarts
blinking on the LCD asking for confirmation.
PressALT+CFMtoconfirmthecalibration.
If everything is satisfactory, the meter displays the "Stor Good" mes-
sage and returns to measurement mode.
Note: If the uncalibrated reading is too far from the expected value,
thecalibrationisnot recognized. The"CON"indicationdoesnot
appear; the " " and "BUF" symbols blink to signal wrong or
contaminated calibration solution.
Note: The meter uses 1.90%/°C compensation factor during calibra-
tion. If the setup item "tc" has been set to a different value,
whenexitingcalibrationmodethevaluedisplayedontheupper
LCD could be different from the nominal calibration value.
III In order to minimize any EMC interference, use plastic beakers.
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 nominal buffer value.
VIt is possible to set the cell constant value directly without
following the calibration procedure. To set the cell constant
enter the setup mode and select "CEL" (see SETUP for details).