ADWA AD31 User Manual

USER MANUAL
AD31 & AD32
Waterproof EC/TDS 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.
This instrument is in compliance with the
EMC directive 2004/108/EC and its stan-
dards, and Low Voltage Directive 2006/95/
EC and its standards for electrical equip-
ments.
For additional technical information, please
e-mail us at sales@adwainstruments.com.
INTRODUCTION
AD31 and AD32 are waterproof EC, TDS and
temperature testers. The housing has been
completely sealed against humidity.
All EC and TDS readings are automatically
temperature compensated (ATC), and
temperature 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 coefficient
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 models 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. 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
1. Percentage indicator for battery life
2. Stability indicator (hourglass symbol)
3. Low battery warning indicator
4. Calibrated meter indication
5. ATC (Automatic Temperature Compensation)
indicator
6. Secondary LCD level
7. Primary LCD level
8. Measurement unit for primary level
(ppm & μS for AD31, ppt & mS for AD32)

TECHNICAL DATA

Range 0.0 to 60.0 °C / 32.0 to 140.0 °F
0 to 3999 μS/cm / 0 to 2000 ppm (AD31)
0.00 to 20.00 mS/cm / 0.00 to 10.00 ppt (AD32)
Resolution 0.1 °C / 0.1 °F
1 μS/cm / 1 ppm (AD31)
0.01 mS/cm / 1 ppt (AD32)
Accuracy ±0.5 °C / ±1 °F
(@25 °C/77 °F) ±2% f.s. (EC/TDS)
Calibration Automatic, 1 point
1413 μS/cm, 1382 ppm or 1500 ppm (AD31)
12.88 mS/cm, 6.44 ppt or 9.02 ppt (AD32)
TDS Factor
User-selectable from 0.45 to 1.00
Temperature Compensation
Automatic, from 0 to 60 °C
β adjustable from 0.0 to 2.4%/°C
Probe AD32P (included)
Battery Type 4 x 1.5V button type
Battery Life Approx. 100 hours 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
PROBE & SOLUTIONS
AD32P Spare EC probe for AD31 &
AD32
AD70031P 1413 μS/cm EC standard solution
20 ml sachet (25 pcs.)
AD70030P 12.88 mS/cm EC standard solution
20 ml sachet (25 pcs.)
AD70032P 1382 ppm solution TDS standard
20 ml sachet (25 pcs.)
AD70442P 1500 ppm solution TDS standard
20 ml sachet (25 pcs.)