ADWA AD11 - User Manual

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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

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 4 x 1.5V button type

Battery Life 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

AD11P Spare pH electrode

A70004P pH 4.01 buffer, 20 ml, 25 pcs

A7004M pH 4.01 buffer, 230 ml bottle

A70007P pH 7.01 buffer, 20 ml, 25 pcs

A7007M pH 7.01 buffer, 230 ml bottle

A70010P pH 10.01 buffer, 20 ml, 25 pcs

A7010M pH 10.01 buffer, 230 ml bottle

A7061M Electrode cleaning solution,

230 ml

A70300M Storage solution, 230 ml

ELECTRODES & SOLUTIONS

ISTAD12 04/10

Need help?

Do you have a question about the ADWA AD11 and is the answer not in the manual?

Summary

Introduction

Front Panel & Display Overview

Technical Data

Electrodes & Solutions

Operational Guide

Turn the Meter On

Instructions on how to power on the pH meter by pressing the ON/OFF/ MODE button until the LCD lights up.

Freeze the Display

Procedure to freeze the current pH or temperature reading on the LCD.

Turn the Meter Off

Steps to switch off the pH meter using the ON/OFF/MODE button.

pH Measurement & Calibration

Taking Measurement

Guide on how to submerge the electrode and wait for the stability indicator.

pH Calibration Procedure

Detailed steps for performing pH calibration, including buffer recognition.

Single-Point Calibration

Instructions for calibrating the meter using a single buffer point.

Two-Point Calibration

Procedure for a two-point calibration for improved measurement accuracy.

Quit Calibration & Reset

How to exit calibration mode or reset calibration settings to defaults.

Setup Menu

Temperature Unit Selection (°C;°F)

Instructions on how to select the temperature unit (°C or °F) in the setup menu.

Calibration Buffer Set Selection

Guide to changing the memorized buffer sets for pH calibration.

Electrode Maintenance

Battery Replacement