ADWA AD12 User Manual

USER MANUAL
AD11 & AD12
Waterproof pH Testers
w w w . a d w a i n s t r u m e n t s . c o m
Dear Customer,
Thank you for choosing an Adwa product.
Please read carefully this manual before starting
operations.
These instruments are 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 sales@adwainstruments.com.
INTRODUCTION
AD11 and AD12 are waterproof pH and tem-
perature testers. The housing has been com-
pletely sealed against humidity.
All pH readings are automatically temperature
compensated (ATC), and temperature values
can be displayed in °C or °F units.
The meter can be calibrated at one or two points
for pH with auto-buffer recognition and against
five memorized buffer values.
Measurements are highly accurate with a unique
stability indicator right on the LCD. The mod-
els are also provided with a low battery symbol
which warns the user when the batteries need
to be replaced.
The AD11P pH electrode, supplied with the
meter, is interchangeable and can be easily re-
placed by the user.
The encapsulated temperature sensor allows
fast and accurate temperature measurement and
compensation.
Each meter is supplied complete with:
• AD11P pH electrode
• 4 x 1.5V batteries, button type
• User manual
FRONT PANEL & DISPLAY
1. Dual line LCD
2. ON/OFF/ MODE button
3. pH electrode & temperature sensor
4. Electrode body
5. Battery compartment (inside)
6. SET/HOLD button
7. Clip holder
1. Stability indicator (hourglass symbol)
2. Low battery warning indicator
3. Calibration mode / calibrated meter indica-
tion
4. ATC (Automatic Temperature Compensa-
tion) indicator
5. Secondary LCD level
6. Primary LCD level
7. Measurement unit for primary level
TECHNICAL DATA
Range -2.0 to 16.0 pH (AD11)
-2.00 to 16.00 pH (AD12)
-5.0 to 60.0°C / 23.0 to 140.0°F
Resolution 0.1 / 0.01 pH
0.1°C / 0.1°F
Accuracy (@20°C/68°F)
±0.1 / ±0.01 pH
±0.5°C / ±1°F
pH Calibration
Automatic, 1 or 2 point
with 2 sets of memorized buffers
(pH 4.01/7.01/10.01 or 4.01/6.86/9.18)
pH Electrode
AD11P (included)
Temperature Compensation
Automatic
Battery Type / Life
4 x 1.5V button type / approx. 300 h of use
Auto-off After 8 minutes of non-use
Environment
-5 to 50°C (23 to122°F); RH 100%
Dimensions 175.5 x 39 x 23 mm
Weight 100 g
ELECTRODES & SOLUTIONS
A70004P pH 4.01 buffer, 20 ml, 25 pcs
A70007P pH 7.01 buffer, 20 ml, 25 pcs
A70010P pH 10.01 buffer, 20 ml, 25 pcs
AD11P Spare pH electrode