ADWA AD330 User manual

USER MANUAL
AD 330
EC/TDS/Temperature
Portable Meter
www.adwainstruments.com

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DearCustomer,
Thank you for choosing an Adwa product.
Please read carefully this manual before starting operations.
This instrument is in compliance with the EMC Directive 89/
336/EEC and Low Voltage Directive 73/23/EEC for electrical
equipments.
For additional technical information, please e-mail us at
[email protected].
WARRANTY
Adwa warrants this product to be free of defects in material
and workmanship as stated in the operating manual. If repair
or adjustment is necessary and has not been the result of
abuse, misuse or improper handling within the warranty pe-
riod, please contact your dealer or nearest Adwa Office for the
RGA (Return Goods Authorization) number to put on the
outside of your package. Warranted service will be made with-
out charge. The meter is warranted for a period of 2 years,
while probes are warranted for 6 months. The warranty pe-
riod commences from the original date of sale. Warranty is
only valid when the product is used under normal conditions
and in accordance with the instruction manual. The warranty
is void if the instrument is repaired or serviced by unautho-
rized personnel, not used in accordance to the instructions,
or if non-Adwa accessories such as buffer solutions, probes,
etc. are used in conjunction with the meter. Adwa will not be
held responsible for any accident whether directly or indi-
rectly, caused by the use of this instrument.
PROBES AND SOLUTIONS
A76309 Conductivity probe with built-in tem-
perature sensor and 1 m cable
A70030P 12.88 mS/cm solution, 20 ml sachet, 25
pcs
A7030M 12.88mS/cm solution, 230 ml bottle
A70031P 1413 µS/cm solution, 20 ml sachet, 25
pcs
A7031M 1413µS/cm solution,230 mlbottle
A70033P 84 µS/cm solution, 20 ml sachet, 25 pcs
A7033M 84µS/cm solution, 230 ml bottle
A7035M 111.8mS/cm solution,230 ml bottle
A7034M 40 ppt (g/l) / 80.0 mS/cm solution, 230
mlbottle
A70442P 1500 ppm solution, 20 ml sachet, 25 pcs
A70442M 1500 ppm solution, 230 ml bottle

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AD330 is a heavy-duty portable microprocessor-based
instrument for measuring conductivity, TDS and tem-
perature.
The autoranging feature of the EC and TDS readings
automatically sets the instrument to the scale with the
highest resolution.
Measurements are compensated for temperature ef-
fect automatically (ATC) or manually (MTC).
The temperature compensation feature can also be
disabled to measure the actual conductivity.
The temperature coefficient is user selectable.
The instrument also features a measurement stability
indicator, GLP capability, and a user selectable ID
code to uniquely identify the instrument.
INTRODUCTION
Thismodel is supplied complete with:
•A76309conductivity probe with built-in temperature
sensor and 1 m cable
•1.5 V AA alkaline batteries (4 pcs)
•User manual

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TECHNICAL DATA
Range 0.00 to 19.99 µS/cm; 0.00 to 9.99 ppm
20.0 to 199.9 µS/cm; 10.0 to 99.9 ppm
200 to 1999 µS/cm; 100 to 999 ppm
2.00 to 19.99 mS/cm; 1.00 to 9.99 ppt
20.0 to 199.9 mS/cm; 10.0 to 99.9 ppt
-9.9 to 120.0°C
Resolution 0.01, 0.1, 1 µS/cm; ppm
0.01, 0.1 mS/cm; ppt
0.1°C
Accuracy ±1% f.s. (EC/TDS)
(@20°C/68°F) ±0.5°C
EC Calibration Offset at 0.00 µS/cm;
Slope at 1 point with 6 memorized values
(84.0, 1413 µS/cm; 5.00, 12.88, 80.0, 111.8 mS/cm)
or with custom value
TemperatureAutomatic or manual,
Compensation -9.9 to 120°C
TemperatureUser selectable
Coefficient from 0.00 to 10.00%/°C
TDS Factor User selectable from 0.40 to 1.00
(default value: 0.50)
Reference Temperature
Selectable from 15.0 to 30.0°C
Probe (included) A76309 EC probe
with built-in temperature sensor
Battery Type & Life
4x1.5 VAA (Alkaline batteries)
approx. 200 hours of continuous use
Auto-Off User selectable
5 minutes or disabled
Environment 0 to 50°C;
RH max 95% non-condensing
Dimensions 188 x 96 x 70 mm
Weight 460 g

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FRONT AND TOP PANELS 1. Probe holder
2. Connector for EC probe
3. ON/OFF key, to turn the instrument ON and OFF
4. HOLD/GLP key, to freeze the first stable reading
on the LCD and to display Good Laboratory Prac-
ticeinformation
5. CAL/SETUPkey,to enter/exit calibration andsetup
modes
6. CFM key, to confirm values
7. SHIFT key, to activate the key alternate function
Press and hold first the SHIFT key and then the
second desired key
8. Down arrow key, to manually decrease the value of
temperature or other parameters
9. Up arrow key, to manually increase the value of
temperature or other parameters
10. RANGE/“lock” key, to select measurement unit
or switch the focused data, and to freeze current
range on the LCD
11. Secondarydisplay
12. Primarydisplay

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• The meter is supplied complete with four 1.5 V AA
alkaline batteries. Remove the cover, unwrap the bat-
teries and install them while paying attention to their
polarity (also see “ Battery Replacement” section).
•To prepare the instrument for use, connect the EC probe
to the DIN connector. Tighten the threaded ring and
make sure the probe sleeve is properly inserted.
INSTRUMENT START-UP
•Turn the instrument on by pressing the
ON/OFF button.
•At start-up the display will show all used segments for
a few seconds (or while the button is held), followed
by the reference temperature value with “rEF” indi-
cation, then enters the measurement mode.
OPERATIONAL GUIDE
•To save battery life, the auto-off feature automatically
turns the meter off after 5 minutes with no button
pressed. This feature can be disabled by entering the
setupmode and selectingthe “AoFF” item(see “Setup”
section for details).
TAKING MEASUREMENTS
•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 RANGE until the de-
sired EC or TDS range is displayed.
•Allow for the reading to stabilize. The primary LCD
willshow the EC or TDS reading in the selected range,
while the temperature is displayed on the secondary
LCD.

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Notes:
•Ifthe meter displays only dashes “----”, the read-
ing is out of range.
•Ifthestabilityindicator(hourglass symbol) blinks,
the reading is not stable.
•Make sure the meter is calibrated before taking
measurements.
•If measurements are taken successively in dif-
ferent samples, for accurate reading it is recom-
mendedto rinse theprobe thoroughly withdeion-
ized water before immersing it into the sample.
•TDS reading is obtained by multiplying the EC
reading by the TDS factor, which has a default
value of 0.50. It is possible to change the TDS
factor within the 0.40 to 1.00 range by entering
setup mode and selecting the “tdS” item (see
“Setup” section for details).
The EC and TDS scales are autoranging. The meter
automatically sets the scale with the highest possible
resolution.
By pressing SHIFT and “lock”
keys, the autoranging feature is
disabled and the current range is
frozen on the LCD.
The µS, mS, ppm or ppt tag (de-
pending on the selected measure-
mentmode and range)starts blink-
ing.
To restore the autoranging option press the SHIFT and
“lock” keys again.
Note: Autoranging is automatically restored if range is
changed, if setup or calibration mode is entered,
or if meter is turned off and back on again.
AUTORANGING

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TEMPERATURE COMPENSATION
Three options are available for temperature compensa-
tion:
1. Automatic (ATC): the EC probe features a built-in
temperature sensor, which provides the temperature
reading to automatically compensate the EC/TDS
measurement (from -9.9 to 120.0°C), also using the
selected reference temperature.
2. Manual (MTC): the temperature value can be manu-
ally set using the arrow keys. The compensation is
referenced to the selected reference temperature.
While in MTC mode, the °C tag blinks on the second-
ary LCD.
3. No compensation (NOTC): the temperature is not
taken into account. The reading displayed on the pri-
mary LCD is the actual EC or TDS value.
Notes:
•The default compensation mode isATC.
•Temperature compensation setting can be ac-
cessed by entering the setup mode and selecting
the “tcE” item (see “Setup” section for details).
•If the temperature compensation is active, mea-
surements are compensated using the tempera-
ture coefficient (default value 1.90 %/°C).
To change the temperature coefficient, enter the
setup mode and select the “tc” item (see “Setup”
section for details).
•If the temperature reading is out of the -9.9 to
120.0°C interval and theATC option is selected,
thetemperature full scalevalue will bedisplayed,
together with the °C tag blinking.
•The reference temperature can be set from 15
to 30°C. When the reference temperature is
changed, the temperature coefficient must be
manually adjusted by the user.
For example, if αis the coefficient with refer-
ence temperature of 25°C, if changing the tem-
perature to 20°C, the new coefficient can be cal-
culatedwith the following formula:
β=α/(1-α/20)
If α=1.90%/°C, then β=2.10%/°C.
•Always set reference temperature to 25°C
when measuring TDS.

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STANDARD CALIBRATION
EC calibration is a one-point procedure. Selectable cali-
brationpointsare:0.00, 84.0and 1413 µS/cm, 5.00,12.88,
80.0 and 111.8 mS/cm.
•Rinse the probe with calibration so-
lution or deionized water, then im-
merse it into the solution. The sleeve
holesmustbecompletely submerged.
•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 key.
Note: TDSreadings areautomatically derived from the
EC readings and no specific calibration for TDS
is needed. Pressing CAL when TDS range is
selected has no effect.
•For zero calibration, simply leave the dry probe in the
air. The “CAL” and “BUFFER” tags light up.
EC CALIBRATION •The primary LCD displays the not calibrated EC read-
ing, while the secondary LCD shows one of the avail-
able standard values. The hourglass symbol blinks.
•If necessary, use the arrow keys to select the desired
standard value.
•When the reading is stable, the CFM tag starts blink-
ing. Press CFM to confirm calibration.
•The instrument displays the “Stor”and “Good”mes-
sages and returns to measurement mode.

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Notes:
•If the temperature is out of range, the “WRONG
BUFFER TEMP” message blinks on the LCD. If the
reading is too far from the expected value, “WRONG
BUFFER” blinks.
•For best results choose a standard value for calibra-
tion close to the sample to be measured.
•During standard calibration the meter uses 1.90%/°C
compensation coefficient. If the setup item “tc” has
been set to different value, when exiting calibration
mode, the displayed valued on the upper LCD might
be different from the nominal standard value.
CUSTOM CALIBRATION
It is also possible to perform EC calibration with custom
calibrationsolution.
•Immerse the probe in the custom calibration solution
and select the EC range. Press CAL to enter the EC
calibration and then the RANGE key to enter custom
EC calibration mode.
•The “CAL”, “BUFFER” and “Cal Point Custom” tags
light up. The primary LCD displays the not calibrated
temperature compensated EC reading, while the sec-
ondary LCD shows the temperature compensated EC
reading, factory calibrated with (cell value) k=1. The
hourglasssymbol blinks.
•Using the arrow keys, adjust the EC reading on the
primary LCD to the desired value.
•The maximum adjustment is ± 40% around the sec-
ondary LCD reading.
•When the reading is stable, the CFM tag starts blink-
ing on the LCD. Press CFM to confirm calibration.
•The instrument displays the “Stor”and “Good”mes-
sages and returns to measurement mode.

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Notes:
•Zero calibration is not allowed in custom mode.
•The calibrated custom value is considered the value
of the calibration solution at the selected reference
temperature.
•It 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 the
“CELL” item (see “Setup” section for details).
•The temperature reading is not used during custom
EC calibration.
Thetemperature reading can be manually fine-tuned fol-
lowing the next procedure.
Press SHIFT and CFM keys to enter
the temperature adjustment mode.
Both primary and secondary LCDs
will display the current temperature
reading for a few seconds followed
by the factory default temperature reading.
Adjustthe temperature readingonthe primary LCDusing
the arrow keys. The maximum adjustment is ± 1.0ºC
around current reading.
Press CFM to confirm. The meter returns to measure-
ment mode and displays the new temperature.
Notes:
•Press SHIFT and CFM keys to escape without
any changes.
•To enter temperature adjustment mode, the
probe must be connected and the meter must
be in ATC mode.
TEMPERATURE ADJUSTMENT

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SETUP
Setup mode allows to view and modify the instrument
parameters.
To enter setup mode, press SHIFT and then SETUP
key from measurement mode. The SETUP tag lights
up. The primary LCD will display the temperature coef-
ficient (default value 1.90%/ºC), while the secondary
LCD shows the code of the current setup item.
Select the desired setup item using the arrow keys, then
press CFM to select and edit the setup item value, and
its current value starts blinking (if it is a changeable pa-
rameter).
Press the arrow keys to change the value.
If there is another part of the item to be set (e.g. month
in setting up the current date), press RANGE and the
part to be changed will start blinking.
Press the arrow keys to change the value and CFM to
confirm.
Note: Press SHIFT and then SETUP key before con-
firmation to escape without changing the previ-
ously set value.

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Thefollowing table lists the setupitems, theirvalid range
and the factory settings (default):
Item
tc
tcE
rEF
tdS
CELL
AOFF
YEAr
DATE
TIME
id
vEr
Description
Temperature coefficient
Temp. compensation mode
Reference temperature
TDS factor
Cell constant (K)
Auto-off enable
Year
Date(DD.MM)
Time(hh:mm)
Meter identification code
Firmwarerelease
Validvalues Default
0.00to10.00%/ºC 1.90
Atc, Mtc, notc Atc
15.0 to 30.0 ºC 25.0 ºC
0.40 to 1.00 0.50
0.500to1.700 1.000
On, Off Off
2000to2098 2000
01.01 to 31.12 01.01
01:01 to 23:59 00.00
0000 to 9999 0000
Good Laboratory Practice (GLP) is a set of functions
that allows storage and retrieval of data regarding the
status of the system.
After a successful calibration, the meter automatically
stores the date and time of calibration, the used calibra-
tion solution and the resulting cell constant value.
Allthis informationcan berecalled
by the user.
To view the last calibration data,
press SHIFT and then GLP keys.
The first information appearing on
the LCD is the meter "id" code.
By repeatedly pressing RANGE key,
all GLP data are displayed as shown
in the next page:
GOOD LABORATORYPRACTICE

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Last calibration date (day and
month):
Last calibration date (year):
Last calibration time:
Cell constant (K):
If standard calibration solution
was used:
If custom calibration solution
was used:
Ifthe cell constantwas changed after calibration (through
the “CELL” setup function), this information is not dis-
played.
If RANGE is pressed when the last parameter is dis-
played, the meter returns to measurement mode.
Notes:
•To exit GLPmodeatany timepress SHIFT+GLPkeys.
•If the calibration procedure was never performed, af-
ter displaying the ID code, the LCD will show the “no
CAL” message blinking. Press RANGE or SHIFT and
GLP keys to return to measurement mode.
•Last calibration data is available for EC range only.
No calibration data can be recalled for TDS. If the
meter is in TDS mode, by pressing SHIFT and GLP
keys only the ID code is shown. Press SHIFT and
GLP keys again to return to measurement mode.
•GLP data are not affected by the zero calibration.

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To freeze the first stable reading on
the LCD, press the HOLD key from
measurement mode.
The “Auto” and “ H” tags will blink on the LCD until
the reading is stabilized.
When the reading becomes stable, the “Auto” and “H”
tags stop blinking and the reading is frozen.
Press the HOLD key again to return to normal mea-
surement mode.
HOLD FUNCTION BATTERYREPLACEMENT
When the batteries become too weak, the “bAtt” mes-
sage appears on the secondary LCD. It is recommended
to replace the batteries soon.
When the battery level is too low to ensure reliable read-
ings, the meter automatically turns off.
Battery replacement must only
take place in a safe area and
using the battery type specified
inthis instruction manual.
To replace rundown batteries,
remove the battery cover and
substitute all four 1.5 VAA al-
kaline batteries with new ones,
while paying attention to the
correct polarity.
Reattachand tightenthe battery
cover making sure that the gas-
ket is in place.
Note:When batteries are removed, the meter can re-
member date & time for about 5 minutes. After
that, it will be necessary to set again date & time
through the setup procedure.

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PROBE MAINTENANCE
After measurements, rinse the probe with clean water.
Ifa more thoroughcleaning is required,remove the probe
sleeve and clean the probe with a cloth or a non-abra-
sive detergent.
Make sure to reinsert the sleeve onto the probe properly
and in the right direction.
After cleaning the probe, recalibrate the instrument.
PROBES AND SOLUTIONS
A76309 Conductivity probe with built-in tem-
perature sensor and 1 m cable
A70030P 12.88 mS/cm solution, 20 ml sachet, 25
pcs
A7030M 12.88mS/cm solution, 230 ml bottle
A70031P 1413 µS/cm solution, 20 ml sachet, 25
pcs
A7031M 1413µS/cm solution,230 mlbottle
A70033P 84 µS/cm solution, 20 ml sachet, 25 pcs
A7033M 84µS/cm solution, 230 ml bottle
A7035M 111.8mS/cm solution,230 ml bottle
A7034M 40 ppt (g/l) / 80.0 mS/cm solution, 230
mlbottle
A70442P 1500 ppm solution, 20 ml sachet, 25 pcs
A70442M 1500 ppm solution, 230 ml bottle

MANAD330R3 03/11
ADWAHUNGARYKft.
Alsókikötõ sor 11, 6726 Szeged, Hungary
Tel.[phone]
Fax[phone]
www.adwainstruments.com