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Summary of Contents for ADWA AD330
- Page 1 USER MANUAL AD 330 EC/TDS/Temperature Portable Meter w w w . a d w a i n s t r u m e n t s . c o m...
- Page 2 Adwa will not be held responsible for any accident whether directly or indirectly, caused by the use of this instrument.
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Page 3: Table Of Contents
TABLE OF CONTENTS Introduction ..............4 Technical Data ............6 Front and Rear Panels ..........8 Operational Guide ............ 10 Autoranging ............. 13 Temperature Compensation ........14 EC Calibration ............16 Temperature Adjustment ........21 Setup ................ 22 Good Laboratory Practice ........25 Hold ................. -
Page 4: Introduction
INTRODUCTION AD330 is a heavy-duty portable microprocessor-based instrument for measuring conductivity, TDS and temperature. 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 effect automatically (ATC) or manually (MTC). - Page 5 This model is supplied complete with: • AD76309 conductivity probe with built-in temperature sensor and 1 m cable • Calibration solution (20 ml sachet each): • 1413 μS/cm EC standard solution • 12,88 μS/cm EC standard solution • 1.5 V AA alkaline batteries (4 pcs) •...
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Page 6: Technical Data
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;... - Page 7 Reference Temperature Selectable from 15.0 to 30.0 °C Probe (included) AD76309 EC probe with built-in temperature sensor Battery Type & Life 4x1.5 V AA (Alkaline batteries) approx. 200 hours of continuous use Auto-Off User selectable 5 minutes or disabled Environment 0 to 50 °C;...
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Page 8: Front And Rear Panels
FRONT AND TOP PANELS... - Page 9 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 Practice information 5. CAL/SETUP key, to enter/exit calibration and setup modes 6.
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Page 10: Operational Guide
OPERATIONAL GUIDE • The meter is supplied complete with four 1.5 V AA alkaline batteries. Remove the cover, unwrap the batteries 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. -
Page 11: Taking Measurements
• 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 setup mode and selecting the “AoFF” item (see “Setup” section for details). TAKING MEASUREMENTS •... - Page 12 Notes: • If the meter displays only dashes “----”, the reading is out of range. • If the stability indicator (hourglass symbol) blinks, the reading is not stable. • Make sure the meter is calibrated before taking measurements. • If measurements are taken successively in different samples, for accurate reading it is recommended to rinse the probe thoroughly with deionized water before immersing it into the...
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Page 13: Autoranging
AUTORANGING 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 (depending on the selected measurement mode and range) starts blinking. -
Page 14: Temperature Compensation
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. - Page 15 • If the temperature compensation is active, measurements are compensated using the temperature 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 the ATC option is selected, the temperature full scale value will be displayed, together with the °C tag blinking.
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Page 16: Ec Calibration
EC CALIBRATION STANDARD CALIBRATION EC calibration is a one-point procedure. Selectable calibration points are: 0.00, 84.0 and 1413 μS/cm, 5.00, 12.88, 80.0 and 111.8 mS/cm. • Rinse the probe with calibration solution or deionized water, then immerse it into the solution. The sleeve holes must be completely submerged. - Page 17 • The primary LCD displays the not calibrated EC reading, while the secondary LCD shows one of the available 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 blinking. Press CFM to confirm calibration.
- Page 18 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 calibration close to the sample to be measured.
- Page 19 • The “CAL”, “BUFFER” and “Cal Point Custom” tags light up. The primary LCD displays the not calibrated temperature compensated EC reading, while the secondary LCD shows the temperature compensated EC reading, factory calibrated with (cell value) k=1. The hourglass symbol blinks. •...
- Page 20 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”...
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Page 21: Temperature Adjustment
TEMPERATURE ADJUSTMENT The temperature reading can be manually fine-tuned following 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. -
Page 22: Setup
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 coefficient (default value 1.90%/ºC), while the secondary LCD shows the code of the current setup item. - Page 23 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.
- Page 24 The following table lists the setup items, their valid range and the factory settings (default): Description Item Valid values Default Temperature coefficient 0.00 to 10.00% / ºC 1.90 Temp. compensation mode Atc, Mtc, notc Reference temperature ºC 15.0 to 30.0 ºC 25.0 TDS factor 0.40 to 1.00...
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Page 25: Good Laboratory Practice
GOOD LABORATORY PRACTICE 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 calibration solution and the resulting cell constant value. - Page 26 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:...
- Page 27 If the cell constant was changed after calibration (through the “CELL” setup function), this information is not displayed. If RANGE is pressed when the last parameter is displayed, the meter returns to measurement mode. Notes: • To exit GLP mode at any time press SHIFT+GLP keys. •...
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Page 28: Hold
HOLD FUNCTION 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. -
Page 29: Battery Replacement
BATTERY REPLACEMENT When the batteries become too weak, the “bAtt” message appears on the secondary LCD. It is recommended to replace the batteries soon. When the battery level is too low to ensure reliable readings, the meter automatically turns off. Battery replacement must only take place in a safe area and using the battery type specified... -
Page 30: Probe Maintenance
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 non-abra- sive detergent. Make sure to reinsert the sleeve onto the probe properly and in the right direction. -
Page 31: Probes And Solutions
PROBES AND SOLUTIONS AD76309 Conductivity probe with built-in temperature sensor and 1 m cable AD70030P 12.88 mS/cm EC standard solution, 20 ml sachet, 25 pcs. AD7030 12.88 mS/cm EC standard solution, 230 ml bottle AD70031P 1413 μS/cm EC standard solution, 20 ml sachet, 25 pcs. - Page 32 ADWA HUNGARY Kft. Alsókikötõ sor 11, 6726 Szeged, Hungary Tel. +36 62 317 878 Fax +36 62 550 610 www.adwainstruments.com MANAD330 09/14...
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