Thermo Scientific AQ3070 Instruction Manual

Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter

User Guide

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The specific

ations, descriptions, drawings, ordering information and part numbers within this document are subject to change without notice.

This publication supersedes all previous publications on this subject.

Table of Content

Chapter 1

Chapter 2

Chapter 3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

AQ3070 Meter Overview .

Unpacking the AQ3070 Meter and Accessories . . . . . . . . . . . . . . . . . . . 2

isplay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

eys and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

K Battery Installation .

Colorimetry Measurement .

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Preparation of the Sample Vial . Measurement Procedure . Chlorine, Free and Total (0 to 4 mg/L Cl

Cyanuric Acid (5 to 90 mg/L). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

.9 to 8.2 pH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

pH (5 Chlorine D

Colorimetry Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Free Chlorine, Total Chlorine and Chlorine Dioxide Calibration .

Cyanuric Acid Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

pH Calibration . Restoring Factory Calibration .

ioxide (0 to 9.0 mg/L ClO

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

) . . . . . . . . . . . . . . . . . . . . . . . 10

) . . . . . . . . . . . . . . . . . . . . . . . . . 21

. . . . . 28

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Chapter 4

Customer Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Routine Maintenance .

Vials – Handling, Cleaning and Care. . . . . . . . . . . . . . . . . . . . . . . . . . 39

Troubleshooting Guide Assistance .

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Notice of Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

WEEE Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Declaration of Conformity .

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Measurement Parameter Speciﬁcations . Meter Speciﬁcations .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

. . . . . . . . . . . . . . . . . . . . . . . . . 45

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

IThermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

II Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Chapter 1 Introduction

General

Information

This user guide contains information on the preparation, operation and maintenance of the Thermo Scientific Orion AQ3070 colorimetry meter. This user guide provides both a step by step guide to help you operate the waterpr

Follow the basic instructions contained in this user guide during the operation, car provided by this equipment may be impaired if it is used in a manner not described in this user guide read this user guide prior to working with this meter.

The manufacturer will not accept any responsibility for damage or malfunction to the meter caused b

The information presented in this user guide is subject to change without notice as improvements are made, and does not represent a commitment on the par

Note: The manufacturer reserves the right to make improvements in design, constr

oof AQ3070 meter and serves as a handy reference guide.

e and maintenance of the meter. The safety protections

. It is recommended that all operators should

y improper use of the meter.

t of the manufacturer.

uction and appearance of products without notice.

AQ3070 Meter

Overview

Thank you for selecting the waterproof portable AQ3070 colorimetry meter.

The AQ3070 meter allows you to measure colorimetry of an aqueous sample in the field. The AQ3070 meter allows you to measure up to five parameters – free chlorine, total chlorine, cyanuric acid, pH and chlorine dio

xide – of an aqueous sample.

The free and total chlorine parameters use our EPA approved methods A

C4P71 for free chlorine and AC4P72 for total chlorine.

1Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Unpacking the

AQ3070 Meter

and Accessories

The table below indicates the items that you should find in your colorimetry meter shipment. Remove the AQ3070 colorimetry meter from the packing carton. Carefully inspect all items to ensure that no visible damage has occurred during shipment. If the items you received do not match your order, please contact Technical Support or your local dealer immediately.

Quantity Item

1 AQ3070 colorimeter with 4 AAA batteries

1 User guide

1 Meter carrying case

6 Sample vials

1 Vial cleaning brush

1 Tablet tamping stir rod

1 pack of 100 tests Free chlorine reagent powder packs (AC4P71)

1 pack of 100 tests Total chlorine reagent powder packs (AC4P72)

The following items can be purchased separately in addition to the AQ3070 colorimeter.

Cat. No. Description

AC4P71 Free chlorine reagent powder packs (100 tests)

AC4P72 Total chlorine reagent powder packs (100 tests)

AC2098 Cyanuric acid reagent tablets (100 tests)

AC2099 Chlorine dioxide reagent tablets (100 tests)

AC3001 pH indicator, 2 x 15 mL dropper bottles (60 tests)

AC3V25 Replacement 25 mm vials, pack of 3

AC3ROD Replacement tablet tamping stir rod, pack of 10

AC3CBR Replacement vial cleaning brush, pack of 10

2 Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Warning: Extra care should be taken when unpacking, opening and

Sample Well

Alignment Mark

Liquid Crystal Display

Keypad

Sample Vial

handling the sample vials. Surface scratches or finger smudges on the sample vial surface may cause measurement errors. Handle the vials by their caps only.

The batteries provided with the meter package are to be installed prior to use

. Refer to the Battery Installation section

Figure 1

AQ3070 Colorimetry

Meter Components

Figure 1 depicts the meter. are the sample well, the display and the keypad. The following sections describe the functionality of the display and the keypad. The proper use of the meter and the sample well are discussed in later sections.

The three main components of the meter

3Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

CAL 13 CAL 24

mg/l

TAvg

14-segment Liquid Crystal Display

Battery Indicator

Calibration Standards

Units of Measurement

Display

Figure 2

Customized LCD

with Annunciators

All the LCD segments and annunciators that can appear on the display are shown in Figure 2.

The display is used for reporting the test results and to provide guidance for the operation of the meter. In addition, the display has several other annunciators that are used to communicate error messages and pr

ovide user information.

4 Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Keys and

Functions

The keypad has four keys: ON/OFF, MODE, READ/ENTER and ZERO.

Key Functions

Powers on and off the meter. The meter automatically shuts off 10 minutes after last key press to conserve the battery life.

Selects the test to be performed.

Selects the calibration point by scrolling during calibration.

Initiates the measurement of the sample after the chemical reagent has been added.

Confirms the test selection.

Zeros the meter (sets the meter zero point) before chemical reagent is added to the sample.

Initiates the calibration mode when used with the ON/OFF key.

Aborts the calibration process without saving.

Exits the calibration mode.

Figure 3

Keypad

5Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Battery

Installation

Four AAA batteries are included in the carrying case.

Note: Use caution when loosening the screws, as some of the screws may be tightly seated

1. Use a Phillips screwdriver to loosen the four screws holding the

battery cover. See Figure 4. to the battery cover.

2. Remove the battery cover.

3. Insert the batteries. Follow the diagram inside the cover for the

correct polarity.

4. Replace the battery cover in its original position and tighten the four

screws removed earlier to secure the battery cover to the meter.

5. The meter is now ready for use.

These captive screws will remain attached

Figure 4

Battery Installation

Note: D

ispose of used batteries in accordance with your local regulations.

6 Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Chapter 2 Colorimetry Measurement

Meter’s Model Number

Mete r’s Revisi on Number

Measurement Mode Selection

General

Information

Figure 5

Power Up

Sequence

Notes

The AQ3070 waterproof colorimetry meter allows you to measure up to five parameters – free chlorine, total chlorine, cyanuric acid, pH and chlorine dioxide – of a sample and reports the results in appropriate units (mg/L or pH) Specifications section ready to take measurements out of the box.

The meter will go through a power sequence as shown below.

An accurate colorimetry measurement depends on good measurement techniques. Factors such as clean sample vials, positioning of vial in the sample well, using a vial with a light shield cap, meter calibration, handling of meter and others hav

• Do not pour liquid directly into the sample well of the meter. Always

use a vial. The meter will only accurately measure the sample when vials sealed with the black caps are used. The black cap serves as both seal and a light shield.

. Each specific measurement has its own range, as listed in the

. The meter has been calibrated at the factory and is

e to be taken into consideration.

• Do not attempt to clean the sample well. The optics may be damaged.

• This meter is designed to measure solutions contained in the custom

made glass vials and therefore the use of other type of sample vials or sample cells may r

• Reagent MSDS files can be obtained from www.thermo.com/water

eagent part number.

esult in inaccurate measurements.

7Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Preparation

of the Sample

Vial

Figure 6

Sample Vial

1. Obtain a clean and dry sample vial. See Figure 6.

2. Handle the sample vial by the top.

3. Rinse the vial with approximately 10 mL of the sample solution,

capping the vial with the black cap and gently inverting it several

. Discard the used sample and repeat the rinsing procedure

times two times

4. Fill the rinsed vial with approximately 10 mL of the sample solution,

up to the mark indicated on the vial. See the supplied black cap.

5. Wipe the vial with a soft, lint-free cloth. Ensure that the outside of

the vial is dry, clean and free from smudges.

6. Place the vial into the meter for measurement.

Figure 7.

Cap the vial with

Figure 7

Filling the

Sample Vial

8 Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Align the alignment mark on the sample vial with the alignment mark on the AQ3010 turbidity meter and push until it is fully snapped in

Measurement

Procedure

1. Place the AQ3070 colorimetry meter on a flat and level surface.

2. Zero the meter using a sample vial filled with deionized water.

3. Place the sample vial inside the sample well and align the vial alignment mark with the meter alignment mark. See

Figure 8.

Figure 8

Aligning the Sample

Vial Alignment Mark

with the Meter

Alignment Mark

4. Push the vial down until it slides fully into the meter.

5. Turn on the meter by pressing the ON/OFF key.

6. The display will indicate the last test that was performed. Press the MODE key to select the desir

7. Press the READ/ENTER key to confirm y

ed test to be performed.

our selection. The meter will display [STbY], indicating that it is ready to accept a blank sample of deioniz

ed water to perform a zero calibration.

8. Press the

ZERO key to z

ero the meter.

9. Remove the sample vial used for zeroing the meter and add the appropriate reagent to it. Cap the vial and follow the appropriate instructions for proper mixing and the time required to develop the color for each r

eagent.

10. Place the vial with the developed color into the sample well and align the alignment mark on the vial with the alignment mark on the meter.

11. Press the

Press the vial down until it slides fully into the optical holder.

READ/ENTER key.

The meter will display the reading in

the appropriate units within three seconds.

12. To perform a measurement of the same sample, repeat steps 8 through 11.

Note: For greater accuracy, perform a zero on each sample vial to remove

zero out” sample and vial effects.

or “

9Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

READ

ENTER

ZERO

Zeroing Unreacted Sample

mg/l

Chlorine,

Free and Total

(0 to 4 mg/L Cl

The AQUAfast AC4P71 method for free chlorine and the AQUAfast AC4P72 method for total chlorine are approved for reporting chlorine

els in drinking water and wastewater to the US EPA. These tests may

lev

)

also be used for measuring the chlorine levels in water, treated water, natural waters and seawater, as well as other aqueous environmental samples

. The EPA methods are available at www.thermo.com/waterapps.

Chlorine,

Free and Total

Test Procedure

Note: The EPA testing range is 0 to 2 mg/L Cl

1. Switch the meter on by pressing the ON/OFF key.

. Press the MODE key until [CL-F] is displayed for free chlorine

determination or [CL-T] is displayed for total chlorine determination

3. Press the

READ/ENTER key to confirm the desir

ed test parameter. The meter will display [STbY], indicating that it is in the standby mode and waiting for measurement or a blank sample of deionized water to per

form a zero calibration.

4. Select a clean and dry vial, unscrew the cap and fill the vial with the sample to the line on the vial. Replace the cap, ensuring that it is screwed on finger-tight to the vial.

5. Ensure that the outside of the vial is clean, dry and absent of any mar

ks or fingerprints. Gently push the vial into the sample well of the meter, while aligning the alignment mark on the vial with the alignment mar

k on the meter. Press the vial down until it slides fully

into the optical holder.

6. Press the

ZERO key to initiate the z

eroing of the meter. The display

will show [ZERo] while zeroing is taking place.

Note: The meter will store the last zero value, even if the meter is

turned off or if the batteries ar

e removed.

10 Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

7. Remove the vial from the meter and add the contents of one

Free Chlorine Sample

READ

ENTER

mg/l

AC4P71 free chlorine powder pack for free chlorine determination or the contents of one AC4P72 total chlorine powder pack for total chlorine determination

8. Replace the cap, ensuring that it is screwed on finger-tight to the vial. Gently swirl the vial repeatedly for approximately twenty seconds, until the po

wder has dissolved.

Note: A small amount of the powder may remain undissolved in the

vial, but this will not affect the measur

ement.

9. Gently push the vial back into the sample well of the meter, while aligning the alignment mark on the vial with the alignment

k on the meter. Press the vial down until it slides fully into the

mar optical holder.

10. For free chlorine determination, press the a fe

w seconds after the free chlorine powder was added to the vial.

READ/ENTER key within

11. For total chlorine determination, wait two minutes and then press the READ/ENTER key within four minutes after the total chlorine po

wder was added to the vial.

12. The meter will flash either [CL-F] or [CL-T], depending on which test is per

formed, while the measurement is taken. The meter will then display the chlorine concentration in milligrams per liter (mg/L) Cl

11Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

Chlorine,

Free and Total

Measuring Hints

and Tips

Sample Collection

• Chlorine determination must take place as soon as possible after the sample is taken or low results may be obtained.

• Plastic containers should not be used to collect the sample because these may have a high chlorine demand that will lead to low reading

esults. It is recommended to wash the container with sample water

r before the sample is collected.

• Avoid agitating the sample excessively, as this may lead to low results. Swirling the vial is the best way to dissolve and mix the reagent.

Sample Measurement

•

If the pink color forms and then rapidly fades, it is an indication that

the chlorine concentration may be very high. If this is the case, dilute the sample with deionized water and retest it. Multiply the result by the dilution factor. Results obtained by this method will not be as accurate as stated in this user guide because some chlorine will be lost in the dilution pr

ocess.

Example: I

part sample water to 1 part deionized water), the result is multiplied

y 2 to give the true concentration of the original sample.

• After use, the vial should be cleaned thoroughly to avoid contaminating the next sample. Do not use household cleaners, as these may have a chlorine demand that will lead to low results on subsequent tests.

• After testing total chlorine, give extra attention to cleaning the vial as any residual reagent will affect any subsequent free chlorine tests. It is recommended to use separate vials for free and total chlorine.

Interferences

•

Acidity – Greater than 250 mg/L CaCO

To remove this interference, neutralize a separate sample to pH 6 - 7 using 1 N sodium hy same volume of 1 N sodium hydroxide to the sample before carrying out the test pr dilution of the sample.

f the sample was diluted 1:1 with deionized water (i.e. 1

may cause an interference.

droxide. Record the volume used and add the

ocedure. Use a multiplication factor to correct for the

12 Thermo Scientiﬁc Orion AQUAfast AQ3070 Colorimetry Meter User Guide

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