Hanna Instruments HI 98360 User Manual
Instruction Manual
HI 9835 HI 98360
Auto Ranging
EC/TDS/NaCl/
Temperature Meters
www.hannainst.com
1
Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using the instruments.
This manual will provide you with the necessary information for correct
use of the instruments, as well as a precise idea of their versatility.
If you need additional technical information, do not hesitate to e-mail us
at tech@hannainst.com.
WARRANTYWARRANTY
WARRANTY
WARRANTYWARRANTY
HI 9835 and HI 98360 are guaranteed for two years against defects in
workmanship and materials when used for their intended purpose and
maintained according to instructions. Electrodes and probes are
guaranteed for six months. This warranty is limited to repair or replacement
free of charge.
Damage due to accidents, misuse, tampering or lack of prescribed
maintenance is 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 problem. 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 Technical Service department
and then send it with shipping costs prepaid. When shipping any
instrument, make sure it is properly packed for complete protection.
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
WARRANTY ........................................................................................................... 2
PRELIMINARY EXAMINATION ................................................................................. 3
GENERAL DESCRIPTION ......................................................................................... 3
FUNCTIONAL DESCRIPTION .................................................................................... 4
SPECIFICATIONS ................................................................................................... 6
OPERATIONAL GUIDE ............................................................................................. 8
AUTO-RANGING ..................................................................................................... 9
AutoEnd ............................................................................................................. 10
TEMPERATURE COMPENSATION .......................................................................... 10
EC/TDS CALIBRATION ........................................................................................... 12
CONDUCTIVITY VERSUS TEMPERATURE CHART ...................................................... 14
NaCl CALIBRATION .............................................................................................. 15
GOOD LABORATORY PRACTICE (GLP) ..................................................................... 16
SETUP ................................................................................................................ 18
LOGGING (HI 98360 only) .................................................................................... 20
TEMPERATURE CALIBRATION (for technical personnel only) .................................. 21
PC INTERFACE (HI 98360 only) ........................................................................... 23
BATTERIES REPLACEMENT .................................................................................... 28
LCD MESSAGE GUIDE ........................................................................................... 30
PROBE MAINTENANCE ........................................................................................ 31
TROUBLESHOOTING GUIDE .................................................................................. 32
ACCESSORIES ..................................................................................................... 33
2
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 or the nearest Hanna Customer Service Center.
Each instrument is supplied with:
• HI 76309 Conductivity probe with 1 m cable (HI 9835)
• HI 76309/1.5 Conductivity probe with 1.5 m cable (HI 98360)
• 3 x 1.5V AAA Batteries
• Instruction Manual
• Rugged Carrying Case
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
HI 9835 and HI 98360 are state-of-the-art, handheld conductivity
meters, designed to provide laboratory results and accuracy under harsh
industrial conditions.
These instruments are provided with a series of new diagnostic features
and messages on the LCD which add an entirely new dimension to the
measurement of EC, TDS and NaCl, by allowing the user to dramatically
improve the reliability of the measurement.
The autoranging feature of the EC and TDS ranges automatically sets the
meter to the scale with the highest possible resolution.
The Auto Endpoint feature automatically freezes the display when a
stable reading is reached.
The measurements are automatically (ATC) or manually (MTC)
compensated for temperature. The temperature coefficient value is
user selectable. It is possible to disable the temperature compensation
and measure the absolute (uncompensated) conductivity.
The HI 98360 also has a logging feature (up to 500 records) and
allows data transfer to computer through the USB port.
The Battery Error Preventing System (BEPS) detects when the batteries
become too weak to ensure reliable measurements.
The backlight feature is automatically disabled when batteries are getting
low and a clear indication is displayed to warn the user of this condition.
However, the meter continues to measure correctly even when the low
battery indication is displayed. The meter automatically switches itself off
when the batteries are too weak to support proper function.
In addition, the meters allow the user to enter an ID code to uniquely
identify the instrument.
3
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
8
7
HI 98360
9
FUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
HI 9835
1) Liquid Crystal Display (LCD).
2) Range key, to select EC/TDS/NaCl range.
Setup key, to enter/exit SETUP mode.
3) On/Off key, to turn the instrument ON and OFF.
4) CAL key, to enter/exit calibration mode.
GLP key, to display Good Laboratory Practice information.
5) 2nd key, to select second key function.
4
6) key, to manually increase temperature or other parameters.
ATC key, to select temperature compensation mode.
7) USB connector (HI 98360 only).
8) Battery compartment cap.
9) DIN connector for EC probe.
10) key, to manually decrease temperature or other parameters.
RCL key, to enter/exit view logged data mode (HI 98360 only).
11) Log key, to store measured data (HI 98360 only).
CFM key, to confirm different values.
12) AutoEnd key, to freeze first stable reading on the LCD.
CLR key, to delete logged data (HI 98360 only).
13) Light key, to toggle display backlighting.
Lock to freeze/unfreeze the current displayed range.
14) Secondary LCD.
15) Primary LCD.
5
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SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
(*)
Uncompensated conductivity (or TDS) is the conductivity (or TDS) value without
temperature compensation.
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7
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
INITIAL PREPARATION
The instrument is supplied complete with batteries. In order to place the
batteries inside the instrument follow the instructions from page 28.
To prepare the instrument for use, connect the EC probe to the input
socket on the top of the instrument.
Turn the instrument ON by pressing On/Off.
At start-up the display will show all
the used segments for a few seconds
(or while the button is held), followed
by the percentage indication of the
remaining battery life. During
instrument startup the “ ” and
“WAIT” tags will blink.
The meter is now ready to operate.
Submerse the probe into the solution to be tested. The
sleeve holes must be completely submersed. 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, 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.
The auto-off feature turns the instrument off after a set period (default
20 minutes) with no button pressed to save battery life. To set another
period or to disable this feature, see SETUP menu on page 18.
The auto-off backlight feature turns the backlight off after a set period
(default 1 min) with no buttons pressed. To set another period or to
disable this feature, see SETUP menu on page 18.
8
Notes: • If the reading is out of range, the full scale value will be
displayed blinking.
• If the reading is not stable, the instability indicator “ ” will
be on.
• Make sure the meter is calibrated before taking measurements.
• If measurements are taken successively in different samples, it
is recommended to rinse the probe thoroughly with deionized
water before immersion in the samples. If possible rinse with
sample also.
• To maximize battery life, the meter is automatically switched
off after a set period of non-use. To reactivate the instrument
press the On/Off key. This feature can be disabled (see
SETUP section for details).
• 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 (see SETUP
section). Always set the reference temperature to 25°C when
measuring TDS.
• When the use of an alternate function is requested, press the
2nd key.
BACKLIGHT FEATURE
The instrument is provided with a Backlight feature to
enhance display readability in low light conditions. It
can be easily toggled on and off through the keypad by
pressing Light.
Note: The backlight automatically shuts off after a set time period to
save battery life (see SETUP for details, page 18).
If battery percentage is less than 20% the backlight can not be ON.
AUTO-RANGINGAUTO-RANGING
AUTO-RANGING
AUTO-RANGINGAUTO-RANGING
The EC and TDS scales are auto-ranging. The meter automatically sets
the scale with the highest possible resolution.
By pressing 2nd then Lock, the auto-ranging feature is disabled and
the current range is frozen on the LCD. The “MEASURE” tag is displayed
blinking.
To restore the auto-ranging option press 2nd then Lock again.
Note: Auto-ranging is automatically restored if the Range or 2nd then
Lock keys are pressed, if the setup or calibration modes are
entered and if the meter is turned off and back on again.
• If 2nd then Lock was pressed to freeze the LCD range and the
reading goes out of range, the full-scale value of the frozen range will
be displayed blinking.
9
AA
utoEndutoEnd
A
utoEnd
AA
utoEndutoEnd
To freeze the first stable reading on the LCD
press AutoEnd while the instrument is in
measurement mode.
The ”HOLD” tag will be displayed blinking on
the LCD until the reading is stabilized.
When the reading is stable, the “HOLD” tag
stops blinking and the reading is frozen on
the LCD.
Press AutoEnd again to return to normal measurement mode.
Note: • Pressing Range the instrument will skip to the displayed
range, without leaving AutoEnd mode. The Log key also
holds AutoEnd mode.
• Pressing 2nd then Setup, GLP or RCL, the instrument
leaves AutoEnd mode and performs the selected function.
TEMPERATURE COMPENSATIONTEMPERATURE COMPENSATION
TEMPERATURE COMPENSATION
TEMPERATURE COMPENSATIONTEMPERATURE COMPENSATION
The EC reading is affected by temperature and changes in ion concentration.
To measure only one variable, conductivity measurements are normally
compensated to a fixed temperature. This reference temperature is
configured in SETUP parameter rEF. See page 18.
Three options of temperature compensation 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
measurement to a 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 to the
solution temperature. The “ºC” or “ºF” symbol blinks when this option is
active. The instrument compensates the conductivity measured at this
temperature to the reference temperature.
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 absolute EC or TDS value without temperature compensation
applied. The measurement changes due to temperature and ion
concentration. The second “ºC” or “ºF” symbol blinks when this option is
active.
10
To select the desired option press the 2nd then ATC key. The option tag
will blink for a few seconds then remain active on the LCD.
If temperature compensation is active, measurements are compensated
using a default temperature coefficient of 1.90 %/°C to the 25°C
reference temperature. This is a natural water tc value.
It is possible to view or 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 section for details).
Notes: • The default compensation mode is Atc.
• If no temperature probe is detected, Atc mode can not be
selected and the instrument displays “----” on the secondary
LCD.
• If the temperature reading is out of the -20.0 – 120.0 ºC
range and Atc option is selected, the “ºC” tag will blink and
the closest interval limit will be displayed.
• By pressing the ARROW keys the displayed temperature
value is changed. This value is used to compensate the
EC/TDS reading.
Temperature compensation is performed by means of the following formula:
Compensated conductivity =
where T is the measured temperature and T
Measured conductivity
1+TC25(T-T
)
ref
is the reference
ref
temperature (20 or 25°C).
Note that if a solution has a temperature coefficient TC with T
=25°C,
ref
when changing the reference temperature to 20°C, the temperature
coefficient must be manually adjusted by the user according to the
following formula:
TC20=
TC
25
1-TC25/20
For example, TC20=2.10%/°C when TC25=1.90%/°C.
Always set reference temperature to 25°C when measuring TDS.
TDS MEASUREMENTS
Press the Range key while in EC range. The instrument will switch to TDS
measuring range. The TDS reading will be displayed on the primary LCD
and the temperature reading on the secondary LCD.
• If the reading is out of range, the full-scale value (100.0 for MTC/ATC
mode or 400.0 for uncompensated TDS) will be displayed blinking.
11
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