USER MANUAL
AD31 & AD32
Waterproof EC/TDS Testers
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INTRODUCTION
AD31 and AD32 are waterproof EC, TDS and
temperature testers. The housing has been com-
pletely sealed against humidity.
All EC and TDS readings are automatically
temperature compensated (ATC), and tempera-
ture values can be displayed in °C or °F units.
The EC/TDS conversion factor (CONV) can
be selected by the user, as well as the coeffi-
cient
β
(BETA) for temperature compensation.
The instruments can be calibrated at one point.
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 AD32P probe supplied with the meters, is
interchangeable and can be easily replaced by
the user.
The encapsulated temperature sensor allows
fast and accurate temperature measurement and
compensation.
Each meter is supplied complete with:
• AD32P EC probe
• 4 x 1.5V batteries, button type
• User manual
FRONT PANEL & DISPLAY
1. Percentage indicator for battery life
2. Stability indicator (hourglass symbol)
3. Low battery warning indicator
4. Calibrated meter indication
5. ATC (Automatic Temperature Compensa-
tion) indicator
6. Secondary LCD level with measure units
7. Primary LCD level
8. Measurement units for primary level
(ppm & µS for AD31, ppt & mS for AD32)
IS
T
AD31 07/07
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 [email protected].
1. Dual line LCD
2. ON/OFF/ MODE button
3. EC probe & temperature sensor
4. Probe body
5. Battery compartment (inside)
6. SET/HOLD button
7. Clip holder
PROBE REPLACEMENT
The probe can be easily replaced by unscrew-
ing the body as shown below.