LaMotte COD3 Plus Manuel utilisateur

Operator’s

Manual

COD3Plus

Colorimeter

1925-MN

Version 1.0

11.07.14

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CONTENTS

GENERAL INFORMATION

Packaging & Delivery ...................................................................................... 5

General Precautions ...................................................................................... 5

Safety Precautions ......................................................................................... 5

Limits of Liability ............................................................................................. 6

Warranty ......................................................................................................... 6

Specications ................................................................................................ 7

Statistical and Technical Denitions ............................................................... 8

Contents and Accessories ............................................................................. 9

EPA Compliance .......................................................................................... 10

CE Compliance ............................................................................................. 10

IP 67 Certication .......................................................................................... 10

CHEMICAL TESTING

Water Sampling for Chemical Analysis ........................................................... 11

Filtration ........................................................................................................... 12

An Introduction to Colorimetric Analysis ..................................................... 13

Reagent Blank ............................................................................................. 14

Colorimeter Tubes and Chamber ................................................................ 14

Meter Care.................................................................................................... 14

Selecting an Appropriate Wavelength ........................................................ 14

Calibration .................................................................................................... 15

Calibration Curves ....................................................................................... 15

Standard Additions ...................................................................................... 18

Sample Dilution & Volumetric Measurements ............................................ 19

Interferences ................................................................................................ 20

Stray Light Interference ............................................................................... 20

OPERATION OF THE COD3 PLUS COLORIMETER

Overview ...................................................................................................... 21

Components ................................................................................................ 22

GENERAL OPERATING PROCEDURES

The Keypad ................................................................................................. 23

Sample Holders............................................................................................ 23

The Display & the Menus ............................................................................ 24

Looping Menus............................................................................................. 26

TESTING

Testing Menu ............................................................................................... 27

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Test Sequences ........................................................................................... 28

General Testing Procedures ........................................................................ 29

Testing With LaMotte Pre-Programmed Tests ............................................. 29

Calibrating LaMotte Pre-Progammed Tests ................................................. 32

Measuring in the Absorbance Mode............................................................ 36

EDITING MENU

Editing a Sequence ..................................................................................... 39

Adding a Test ............................................................................................... 41

Deleting a Test ............................................................................................... 43

Edit User Tests ............................................................................................. 45

Naming the Test ........................................................................................... 47

Selecting the Vial and Wavelength ............................................................. 50

Entering a Two Point Calibration ................................................................. 51

Entering a Multiple Point Calibration............................................................. 55

Selecting the Numerical Format of the Result ............................................. 58

Selecting Units of Concentration ................................................................. 59

Setting the Clock .......................................................................................... 60

Logging Data................................................................................................ 61

Factory Setup ............................................................................................... 62

Setting the Power Save Function................................................................. 62

Setting the Backlight Time ............................................................................ 63

Selecting a Language ................................................................................... 64

COMPUTER CONNECTION

PC Link .......................................................................................................... 66

Output .......................................................................................................... 66

Computer Connection.................................................................................. 66

SMARTLink 3 ................................................................................................. 66

BATTERY

Battery/AC Operation .................................................................................... 66

Battery Replacement..................................................................................... 67

MAINTENANCE

Cleaning ...................................................................................................... 68

Repairs.......................................................................................................... 68

Meter Disposal.............................................................................................. 68

TROUBLESHOOTING

Error Messages ............................................................................................ 69

Troubleshooting Guide................................................................................. 70

COD3 Plus COLORIMETER TEST PROCEDURES

APPENDIX

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COD3 Plus Colorimeter 11.14 5

GENERAL INFORMATION

PACKAGING & DELIVERY

Experienced packaging personnel at LaMotte Company assure adequate

protection against normal hazards encountered in transportation of shipments.

After the product leaves the manufacturer, all responsibility for its safe delivery

is assured by the transportation company. Damage claims must be led

immediately with the transportation company to receive compensation for

damaged goods.

Should it be necessary to return the instrument for repair or servicing, pack

instrument carefully in a suitable container with adequate packing material.

A return authorization number must be obtained from LaMotte Company by

calling 1-800-344-3100 or emailing [email protected]. Attach a letter with the

authorization number to the shipping carton which describes the kind of trouble

experienced. This valuable information will enable the service department to

make the required repairs more efciently.

GENERAL PRECAUTIONS

Before attempting to set up or operate this instrument it is important to read the

instruction manual. Failure to do so could result in personal injury or damage to

the equipment.

The COD3 Plus Colorimeter should not be stored or used in a wet or corrosive

environment. Care should be taken to prevent water or reagent chemicals from

wet colorimeter tubes from entering the colorimeter chamber.

NEVER PUT WET TUBES IN COLORIMETER.

SAFETY PRECAUTIONS

Read the labels on all LaMotte reagent containers prior to use. Some containers

include precautionary notices and rst aid information. Certain reagents are

considered hazardous substances and are designated with a * in the instruction

manual. Material Safety Data Sheets (MSDS) can be found at www.lamotte.

com. Read the MSDS before using these reagents. Additional emergency

information for all LaMotte reagents is available 24 hours a day from the Poison

Control Center listed in the front of the phone book or by contacting the 24

hour emergency line for ChemTel 1-800-255-3924 (USA, Canada, Puerto Rico);

locations outside the North American Continent 813-248-0585 (call collect). Be

prepared to supply the name and four-digit LaMotte code number found on the

container label or at the top of the MSDS or in the contents list of the procedure.

LaMotte reagents are registered with a computerized poison control information

system available to all local poison control centers.

Keep equipment and reagent chemicals out of the reach of young children.

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6 COD3 Plus Colorimeter 11.07

LIMITS OF LIABILITY

Under no circumstances shall LaMotte Company be liable for loss of life, property,

prots, or other damages incurred through the use or misuse of its products.

WARRANTY

LaMotte Company warrants this instrument to be free of defects in parts and

workmanship for 2 years from the date of shipment. If it should become

necessary to return the instrument for service during or beyond the warranty

period, contact our Technical Service Department at 1-800-344-3100 or

[email protected] for a return authorization number or visit www.lamotte.com

for troubleshooting help. The sender is responsible for shipping charges, freight,

insurance and proper packaging to prevent damage in transit. This warranty

does not apply to defects resulting from action of the user such as misuse,

improper wiring, operation outside of specication, improper maintenance or

repair, or unauthorized modication. LaMotte Company specically disclaims any

implied warranties or merchantability or tness for a specic purpose and will not

be liable for any direct, indirect, incidental or consequential damages. LaMotte

Company’s total liability is limited to repair or replacement of the product. The

warranty set forth above is inclusive and no other warranty, whether written or

oral, is expressed or implied.

REGISTER YOUR METER

To register your meter with the LaMotte Service Department, go to

www.lamotte.com and choose SUPPORT on the top navigation bar.

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COD3 Plus Colorimeter 11.14 7

SPECIFICATIONS

INSTRUMENT TYPE: Colorimeter

Readout 160 x 100 backlit LCD, 20 x 6 line graphical display

Wavelengths 428 nm, 635 nm

Wavelength Accuracy ±2% FS

Readable Resolution Determined by reagent system

Wavelength Bandwidth 10 nm typical

Photometric Range –2 to +2 AU

Photometric Precision ± 0.001 AU at 1.0 AU

Photometric Accuracy ±0.005 AU at 1.0 AU

Sample Chamber Accepts 25 mm diameter at-bottomed test tubes, 10

mm square cuvettes, 16 mm COD test tubes

Light Sources 2 LEDs

Detectors 2 silicon photodiodes

Modes Pre-programmed tests, absorbance, %T

Pre-Programmed Tests YES, with automatic wavelength selection

User Dened Tests Up to 25 user tests can be input

Languages English, Spanish, French, Portuguese, Italian,

Chinese, Japanese

USB Port Mini B

Power Requirements USB wall adapter, USB computer connection or

lithium ion rechargeable battery

Battery Charge Life: Approximately 380 tests with backlight

on to 1000 tests with backlight off. (Signal averaging

disabled).

Battery Life: Approximately 500 charges.

Electrical Rating Provided on nameplate label

Data Logger 500 test results stored for download to a PC

Waterproof IP67 with USB port plug in place

Dimensions (LxWxH) 3.5 x 7.5 x 2.5 inches, 8.84 x 19.05 x 6.35 cm

Weight 13 oz, 362 g (meter only)

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8 COD3 Plus Colorimeter 11.07

STATISTICAL & TECHNICAL DEFINITIONS RELATED TO PRODUCT

SPECIFICATIONS

Method Detection Limit (MDL): “The method detection limit (MDL) is dened

as the minimum concentration of a substance that can be measured and

reported with 99% condence that the analyte concentration is greater than zero

and is determined from analysis of a sample in a given matrix containing the

analyte.”1Note that, “As Dr. William Horwitz once stated, ‘In almost all cases when

dealing with a limit of detection or limit of determination, the primary purpose of

determining that limit is to stay away from it.’”2

Accuracy: Accuracy is the nearness of a measurement to the accepted or true

value.3The accuracy can be expressed as a range, about the true value, in

which a measurement occurs (i.e. ±0.5 ppm). It can also be expressed as the

% recovery of a known amount of analyte in a determination of the analyte (i.e.

103.5 %).

Resolution: Resolution is the smallest discernible difference between any

two measurements that can be made.4For meters this is usually how many

decimal places are displayed. (i.e. 0.01). Note that the resolution many change

with concentration or range. In some cases the resolution may be less than the

smallest interval, if it is possible to make a reading that falls between calibration

marks. A word of caution, that resolution has very little relationship to accuracy or

precision. The resolution will always be less than the accuracy or precision but it

is not a statistical measure of how well a method of analysis works. The resolution

can be very, very good and the accuracy and precision can be very bad! This is

not a useful measure of the performance of a test method.

Repeatability: Repeatability is the within-run precision.5A run is a single data

set, from set up to clean up. Generally, one run occurs on one day. However, for

meter calibrations, a single calibration is considered a single run or data set, even

though it may take 2 or 3 days.

Reproducibility: Reproducibility is the between-run precision.6

Detection Limit (DL): The detection limit (DL) for the 2020we/wi

is dened as the minimum value or concentration that can be determined by the

meter, which is greater than zero, independent of matrix, glassware, and other

sample handling sources of error. It is the detection limit for the optical system of

the meter.

1CFR 40, part 136, appendix B

2Statistics in Analytical Chemistry: Part 7 – A Review, D. Coleman and L Vanatta,

American Laboratory, Sept 2003, P. 31.

3Skoog, D.A., West, D. M., Fundamental of Analytical Chemistry, 2nd ed., Holt

Rinehart and Winston, Inc, 1969, p. 26.

4Statistics in Analytical Chemistry: Part 7 – A Review, D. Coleman and L Vanatta,

American Laboratory, Sept 2003, P. 34.

5Jeffery G. H., Basset J., Mendham J., Denney R. C., Vogel’s Textbook of

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COD3 Plus Colorimeter 11.14 9

Quantitative Chemical Analysis, 5th ed., Longman Scientic & Technical, 1989, p.

130.

6Jeffery G. H., Basset J., Mendham J., Denney R. C., Vogel’s Textbook of

Quantitative Chemical Analysis, 5th ed., Longman Scientic & Technical, 1989, p.

130

CONTENTS AND ACCESSORIES

CONTENTS

COD3 Plus Colorimeter

Test Tubes, with Caps

COD/UDV Adapter

USB Wall Adapter

USB Cable

COD3 Plus Colorimeter Quick Start Guide

COD3 Plus Colorimeter Manual

ACCESSORIES

Test Tubes, with Caps Code 0290-6

Replacement Chamber Code 3-0038

USB Cable Code 1720

USB Wall Adapter Code 1721

COD/UDV Adapter Code 1724

Car Charger Code 5-0132

SMARTLink3 Program (CD) Code 1901-CD

Small Field Carrying Case

(37.5 27.5 x 13.75 cm)

Code 1910-GCS150

Large Field Carrying Case

(45 x 32.5 x 20 cm)

Code 1910-GCS440

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10 COD3 Plus Colorimeter 11.07

EPA COMPLIANCE

The COD3 Plus Colorimeter is an EPA-Accepted instrument. EPA-Accepted

means that the instrument meets the requirements for instrumentation as found

in test procedures that are approved for the National Primary Drinking Water

Regulations (NPDWR) or National Pollutant Discharge Elimination System

(NPDES) compliance monitoring programs. EPA-Accepted instruments may be

used with approved test procedures without additional approval.

CE COMPLIANCE

The COD3 Plus Colorimeter has earned the European CE Mark of Compliance for

electromagnetic compatibility and safety. The Declaration of Conformity for the

COD3 Plus Colorimeter is available at www.lamotte.com.

IP67 CERTIFICATION

The COD3 Plus meets IP67 standards for protection against dust and immersion

only when the USB port plug is in place. Documentation is available at www.

lamotte.com.

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