Hanna Instruments HI 2300 User manual

1
EC/TDS/NaCl
Bench Meter
HI 2300
Instruction Manual
www.hannainst.com
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TABLE OF CONTENTS
WARRANTY .................................................................................................... 2
PRELIMINARY EXAMINATION ............................................................................ 3
GENERAL DESCRIPTION .................................................................................... 3
FUNCTIONAL DESCRIPTION .............................................................................. 4
SPECIFICATIONS ............................................................................................. 5
OPERATIONAL GUIDE ....................................................................................... 7
AUTO-RANGING .............................................................................................. 9
ECS/TDS CALIBRATION .................................................................................... 10
CONDUCTIVITY VERSUS TEMPERATURE CHART ...................................................12
NaCl CALIBRATION ......................................................................................... 13
GOOD LABORATORY PRACTICE (GLP) .................................................................14
LOGGING FUNCTION ....................................................................................... 16
SETUP ..........................................................................................................21
TEMPERATURE CALIBRATION (for technical personnel only) .................................25
PC INTERFACE ............................................................................................... 27
PROBE MAINTENANCE .................................................................................... 31
TROUBLESHOOTING GUIDE .............................................................................. 32
ACCESSORIES ............................................................................................... 33
WARRANTY
HI 2300 is guaranteed for two years against defects in workmanship and
materials when used for its 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.
Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using thisinstrument.
This manual will provide you with the necessary information for correct
use of this instrument, as well as a precise idea of its versatility.
If you need additional technical information, do not hesitate to e-mail
us at [email protected] or view our worldwide contact list at
www.hannainst.com.
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3
GENERAL DESCRIPTION
The HI 2300 is a logging microprocessor-based Conductivity (EC), TDS,
NaCl and Temperature bench meter.
The conductivity measurements are compensated for temperature
effect manually or automatically with the temperature sensor inside
the conductivity probe. It is also possible to disable the temperature
compensation and measure the actual conductivity.
The auto-ranging feature of the EC and TDS ranges automatically sets
the instrument to the scale with the highest possible resolution.
The temperature coefficient on EC range is user selectable.
The GLP feature provides a guarantee of data consistency.
The instrument can store data in memory for later retrieval. The meter’s
memory can hold 500 manually logged points.
An USB connection ensure communication with a PC.
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 or the nearest Hanna Customer Service Center.
Each instrument is supplied with:
•HI 76310 Conductivity / TDS probe
•12VDC Power Adapter
•Instruction Manual
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.
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1) Liquid Crystal Display (LCD).
2) CAL key, to enter and exit calibration mode.
RCL key (alternate function), to enter and exit memory recall.
3) CFM/GLP key, to confirm calibration selection, different setup values
or to display Good Laboratory Practice information.
4) ºC key, to manually increase temperature value or other parameters.
TC key (alternate function), to view temperature coefficient value.
5) ºC key, to manually decrease temperature value or other parameters.
ATC key (alternate function), to select EC temperature compensation mode.
6) SETUP key, to enter/exit SETUP mode.
LOCK key (alternate function), to freeze current EC range on the LCD.
7) RANGE key, to select measurement range (EC, TDS, NaCl), switch to
focused data in SETUP or toggle between standard value and
temperature during calibration.
8) LOG/CLR key, to store a value into memory, or to select to delete log
records.
9) ALT key, to select alternate function.
10) ON/OFF switch.
11) Power supply socket.
12) USB connector.
13) EC probe connector.
Front Panel
Rear Panel
FUNCTIONAL DESCRIPTION
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EGNAR
99.92ot00.0 µmc/S
9.992ot0.03 µmc/S
003 .9992ot .µmc/S
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NOITULOSER
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(*)Actual conductivity (or TDS) is the conductivity (or TDS) value without temperature
compensation.
SPECIFICATIONS
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OPERATIONAL GUIDE
POWER CONNECTION
Plug the 12 VDC adapter into the power supply socket.
Notes:•This instrument uses non volatile memory to retain the calibration
parameters and all other settings, even when unplugged.
•Make sure a fuse protects the main line.
PROBE CONNECTION
For EC/TDS or temperature measurements connect the probe to the 7-pin
connector. Make sure the probe sleeve is properly inserted.
INSTRUMENT START-UP
•Turn the instrument on by pressing the ON/OFF switch located on
the rear panel.
•All LCD tags are displayed and a beep is sounded while the
instruments perform a self test.
•The instrument will display “LoAd” message and “” blinking until
initialization is complete.
Notes:•The instrument starts in the same range and mode as it was
at power off.
•The RANGE key toggles between measurement ranges:
- EC, TDS and NaCl.
CONDUCTIVITY MEASUREMENTS
Connect the conductivity probe to the instrument.
•Press the RANGE key to enter conductivity measurement range (EC).
•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.
•The conductivity value will be displayed on the primary
LCD and the temperature on the secondary LCD.
•If the reading is out of range, the full-scale value (200.0 for Mtc/Atc
mode or 500.0 for actual conductivity) will be displayed blinking.
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The conductivity reading is affected by temperature.
Three options for temperature compensation are available in conductivity
measurement mode.
Note:The compensation is referenced at the selected reference temperature
(see SETUP for details, page 21).
To select the desired option, press the
ALT&ATC keys until the option is displayed
on the LCD.
Automatic (Atc): The conductivity probe has a built-in temperature
sensor; the temperature value is used to automatically compensate the
EC/TDS reading.
Manual (Mtc): The temperature value, shown on the secondary LCD,
can be manually set with the ARROW keys. The “ºC” tag blinks when
this option is active. This value will be used to compensate the ECT/TDS
reading.
No Compensation (notc): The temperature value is displayed, but not
taken into account. When this option is selected the “ºC” tag will blink
with slower frequency. The reading displayed on the primary LCD is the
uncompensated EC or TDS value.
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 temperature compensation is selected, measurements are compensated
using the temperature coefficient (default value 1.90 %/ºC). To change
the temperature coefficient, enter the setup mode and select “tc” (see
SETUP for details, page 21). The current temperature coefficient can be
quickly viewed by pressing the ALT&TC keys in Atc and Mtc modes. The
value is briefly displayed on the secondary LCD.
•If the temperature reading exceeds the limits of the meter (–20.0 ºC
to 120.0 ºC), the “ºC” tag will blink and the closest full-scale value
will be displayed.
TDS MEASUREMENTS
Press the RANGE keys 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.
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•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.
•If 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.
NaCl MEASUREMENTS
Press the RANGE keys while in EC range until NaCl is displayed on the
LCD. The instrument will display the NaCl reading on the primary LCD
and the temperature reading on the secondary LCD line.
•If the reading is out of range, the full-scale value (400.0%) will be
displayed blinking.
AUTO-RANGING
The EC and TDS scales are auto-ranging. The meter automatically sets
the scale with the highest possible resolution.
By pressing ALT&LOCK, the auto-ranging feature is disabled and the
current range is frozen on the LCD. The “LOCK” tag will be displayed on
the LCD.
Note:Auto-ranging is automatically restored if the range is changed, if
the setup or calibration modes are entered and if the meter is
turned off and back on again.
When auto-ranging is disabled and the reading goes out of range,
the full-scale value of the frozen range will be displayed blinking.
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EC/TDS CALIBRATION
Selectable calibration points for conductivity are 0.00 µS for offset and
84.0 µS, 1413 µS, 5.00 mS, 12.88 mS, 80.0 mS, 111.8 mS for slope.
Rinse the probe with calibration solution or deionized
water. Submerse the probe into the solution. The sleeve
holes must be completely submersed. Tap the probe
repeatedly to remove any air bubbles that may be trapped
inside the sleeve.
To enter EC calibration, select the EC range and press
CAL.
The “BUF” and “CAL” tags are displayed. The primary LCD will display
the EC reading. The secondary LCD will display the standard value. The
“”and “~” tags will blink and the information about temperature
compensation is displayed.
Note:The TDS reading is automatically derived from the EC reading and
no specific calibration for TDS is needed. Pressing CAL when TDS
range is selected has no effect.
For zero calibration, just leave the dry probe in the air. This calibration
is performed in order to correct the reading at 0.00 µS. The slope is
evaluated when the calibration is performed at any other point.
Select the desired value with the ARROW keys, if necessary.
When the reading is stable, “CFM” tag starts blinking on the LCD,
asking for confirmation.
Press CFM to confirm calibration.
The instrument stores the calibration value and returns
to measurement mode.
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