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www.adwainstruments.com

USER MANUAL

AD11 & AD12

Waterproof pH Testers

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

temperature testers. The housing has been

completely 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 models 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

replaced 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 indication

4.ATC (Automatic Temperature Compensation)

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

Resolution0.1 / 0.01 pH

0.1 °C / 0.1 °F

Accuracy (@25 °C/77 °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 ElectrodeAD11P (included)

Temperature Compensation

Automatic

Battery Type4 x 1.5V button type

Battery LifeApprox. 300 h of use

Auto-offAfter 8 minutes of non-use

Environment

-5 to 50 °C (23 to122 °F); RH 100%

Dimensions175.5 x 39 x 23 mm

Weight100 g

AD11PSpare pH electrode

AD70004PpH 4.01 buffer solution, 20 ml, 25 pcs.

AD7004pH 4.01 buffer solution, 230 ml bottle

AD70007PpH 7.01 buffer solution, 20 ml, 25 pcs.

AD7007pH 7.01 buffer solution, 230 ml bottle

AD70010PpH 10.01 buffer solution, 20 ml, 25 pcs.

AD7010pH 10.01 buffer solution, 230 ml bottle

AD7061Cleaning solution, 230 ml

AD70300Storage solution, 230 ml

ELECTRODES & SOLUTIONS

ISTAD12 09/14

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