LaMotte COD3 Plus User manual

1925-MN-V3
10.10.18
1925-MN-V3.indd
COD3 Plus
Colorimeter
Operator’s
Manual
Firmware Version 2.10 and greater
PO Box 329 • Chestertown • MD • 21620
800-344-3100 • 410-778-3100
www.lamotte.com
Warning! This set contains chemicals
that may be harmful if misused. Read
cautions on individual containers
carefully. Not to be used by children
except under adult supervision.

CONTENTS
COD3 Plus
Kit Contents............................................................................................................................................ 5
Accessories............................................................................................................................................. 5
General Testing Procedures................................................................................................................ 6
Testing with LaMotte Pre-Programmed Tests............................................................................... 6
Calibrating LaMotte Pre-Programmed Tests.................................................................................8
SET UP
Setting the Clock.................................................................................................................................11
Logging Data........................................................................................................................................12
Factory Setup.......................................................................................................................................13
Setting Power Save.............................................................................................................................13
Setting Backlight Time ......................................................................................................................14
Selecting A Language.........................................................................................................................15
Looping Menus.....................................................................................................................................16
COMPUTER CONNECTION
Output....................................................................................................................................................17
Computer Connection........................................................................................................................17
BATTERY
Battery/AC Operation .........................................................................................................................17
Battery Replacement .........................................................................................................................18
MAINTENANCE
Cleaning.................................................................................................................................................18
Repairs...................................................................................................................................................18
Meter Disposal .....................................................................................................................................19
GENERAL OPERATING INFORMATION
Overview ................................................................................................................................................19
General Operating Information........................................................................................................19
The Keypad............................................................................................................................................20
The Display and Menus ......................................................................................................................20
Tubes and Chambers..........................................................................................................................22
Sample Holders ...................................................................................................................................23
Sample Dilution Techniques.............................................................................................................23

GENERAL INFORMATION
Packaging and Delivery......................................................................................................................24
General Precautions ...........................................................................................................................24
Safety Precautions .............................................................................................................................24
Limits of Liability.................................................................................................................................24
Specifications ......................................................................................................................................25
CE ........................................................................................................................................................26
IP67 ........................................................................................................................................................26
Warranty................................................................................................................................................26
Register Your Meter............................................................................................................................26
TROUBLE SHOOTING GUIDE
Error Messages....................................................................................................................................27
Calibration.............................................................................................................................................27
Stray Light ............................................................................................................................................27
Troubleshooting Guide .......................................................................................................................28
TEST PROCEDURES (ALPHABETICAL ORDER)

COD3 Plus Colorimeter 10.18 5
CONTENTS AND ACCESSORIES
Contents
COD3 Plus Colorimeter
Test Tubes, with Caps Code 0290
COD/UDV Adapter Code 1724
USB Wall Adapter Code 1721
USB Cable Code 1720
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
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

6 COD3 Plus Colorimeter 10.18
GENERAL TESTING PROCEDURES
The following is a step-by-step example of how to run tests from the Testing Menu.
These test procedures are designed to be used with LaMotte SMART Reagent Systems.
LaMotte Company continuously updates the list of pre-programmed tests as the
calibrations become available. Call LaMotte Technical Services at 1-800-344-3100
(410-778-3100 outside the USA) or email at [e-mail] for a current list of
available calibrations.
TESTING WITH LaMOTTE PRE-PROGRAMMED TESTS
1. Press and briefly hold to
turn the meter on. The LaMotte
logo screen will appear for about
3 seconds and the Main Menu
will appear.
Main Menu
Testing Menu
Editing Menu
12:00:00 001/500
2. Press
ENTER to select Testing
Menu.
All Tests
006 Ammonia-N LRF
007 Ammonia-N LRS
008 Ammonia-N HR
014 Boron
12:00:00 001/500
3. Press or to scroll to
the desired test.
All Tests
006 Ammonia-N LRF
007 Ammonia-N LRS
008 Ammonia-N HR
014 Boron
12:00:00 001/500
4. Press
ENTER to select the
test.
007 Ammonia-N LRS
Scan Bank
Scan Sample
12:00:00 001/500

COD3 Plus Colorimeter 10.18 7
5. Insert the blank into the
chamber. Close the lid.Press
ENTER to scan the blank. The
screen wil display Scan Blank
Blank Done for about 1 second
and then return to the test
menu.
007 Ammonia-N LRS
Scan Blank
Scan Sample
12:00:00 001/500
6. Insert the reacted sample into
the chamber. Close the lid. Press
ENTER to scan the sample. The
screen will display Scan Sample
Sample Done for about 1
second. The result will appear on
the screen.
007 Ammonia-N LRS
1.00 ppm
Scan Blank
Scan Sample
12:00:00 001/500
To repeat the test, press ENTER
to scan the sample again. The
last blank scanned is used by the
colorimeter for repeated scans.
A different blank can be used by
pressing or to scroll
to Scan Blank and then scanning
another blank. Scroll with or
and make another selection
with ENTER . The %T or Absorbance
of the last test can be viewed by
scrolling down and choosing %T/Abs.
Press EXIT to escape to previous
menus.
NOTE: The menus loop in this screen
so either or will lead to
the menu selection needed.
007 Ammonia-N LRS
1.00 ppm
Scan Bank
Scan Sample
12:00:00 001/500

8 COD3 Plus Colorimeter 10.18
CALIBRATING LaMOTTE PRE-PROGRAMMED TESTS
The LaMotte Pre-Programmed Tests have been pre-calibrated. Recalibration of
the pre-programmed tests by the user is not possible. However, a procedure to
standardize the calibration can be performed to obtain the most accurate readings or
to meet regulatory requirements.
The LaMotte Pre-Programmed tests are standardized with one standard solution. To
standardize over the full range of the test, the concentration of the standard should
be chosen from the high end of the range. Alternatively, if samples do not cover the full
range of the test, a standard should be chosen that is close to the concentration of
the samples.
The standardization procedure should be followed as often as required by regulations
and laws for compliance monitoring.
In the example below, the Aluminum calibration will be standardized.
Prepare a standard solution to be tested. In this example, 0.30 ppm ammonia
nitrogen.
1. Press and briefly hold to
turn the meter on. The LaMotte
logo screen will appear for about
3 seconds and the Main Menu
will appear.
Main Menu
Testing Menu
Editing Menu
12:00:00 001/500
2. Press
ENTER to select Testing
Menu.
Testing Menu
006 Ammonia-N LRF
007 Ammonia-N LRS
008 Ammonia-N HR
014 Boron
12:00:00 001/500
3. Press or to scroll to
the desired test factor.
All Tests
006 Ammonia-N LRF
007 Ammonia-N LRS
008 Ammonia-N HR
014 Boron
12:00:00 001/500

COD3 Plus Colorimeter 10.18 9
4. Press
ENTER to select the
test.
007 Ammonia-N LRS
Scan Blank
Scan Sample
12:00:00 001/500
5. Follow the test procedure in the
manual to test the prepared
standard. Insert the blank into
the chamber. Close the lid. Press
ENTER to scan the blank. The
screen will display Scan Blank
Blank Done for about 1 second
and then return to the Test
Menu.
007 Ammonia-N LRS
Scan Blank
Scan Sample
12:00:00 001/500
6. Insert the reacted standard
solution into the chamber. Close
the lid. Press ENTER to scan the
sample. The screen will display
Scan Sample Sample Done for
about 1 second. The result will
appear on the screen.
007 Ammonia-N LRS
0.28 ppm
Scan Blank
Scan Sample
12:00:00 001/500
7. The displayed result can now be
standardized. Press or
to scroll to Calibrate.
007 Ammonia-N LRS
0.28 ppm
%T/Abs
Calibrate
12:00:00 001/500
8. Press
ENTER to select Calibrate.
A reverse font (light background
with dark characters) will appear
to indicate that the reading can
be adjusted.
007 Ammonia-N LRS
0.28 ppm
, =Edit, ENTER=Save
+ENTER=Default
12:00:00 001/500

10 COD3 Plus Colorimeter 10.18
9. Press or to
adjust the value shown to the
concentration of the prepared
standard, 0.30 in this example.
NOTE: A maximum adjustment
of 25% is possible.
007 Ammonia-N LRS
0.30 ppm
, =Edit, ENTER=Save
+ENTER=Default
12:00:00 001/500
10. Press ENTER to save the value.
To leave the Calibration
procedure without saving the
adjustment, press EXIT .
Press and ENTER at any
time to return to the default
value.
The calibration has now been
standardized and can be used
for testing. Scroll to Scan Blank
and begin testing.
007 Ammonia-N LRS
0.30 ppm
%T/Abs
Calibrate
12:00:00 001/500

COD3 Plus Colorimeter 10.18 11
SETTING THE CLOCK
Setting the clock allows the correct time and date stamp to be stored with each
reading in the data logger.
1. From the Editing Menu, press
or to scroll to Set
Clock.
Editing Menu
Set Clock
Logging
Factory Setup
Set Power Save
12:00:00 001/500
2. Press
ENTER to select Set Clock.
The year is displayed. Press
or to scroll to the
appropriate character. Press
ENTER to select the character.
The month, day, hour, format
hour, minute, second, AM/PM
will be dislpayed. Repeat for
each.
Set Time
Year: 2000
12:00:00 001/500
3. Press
ENTER to select the final
character. The time and date
will be saved and the meter will
return to the Editing Menu.
Editing Menu
Set Clock
Logging
Factory Setup
Set Power Save
12:00:00 001/500

12 COD3 Plus Colorimeter 10.18
LOGGING DATA
The default setting for the data logger is enabled. The meter will log the last 500 data
points. The counter in the center bottom of the display will show how many data points
have been logged. The display will show 500+ when the data logger has exceeded 500
points and the data points are being overwritten.
1. From the Editing Menu, press
or to scroll to
Logging.
Editing Menu
Set Clock
Logging
Factory Setup
Set Power Save
12:00:00 001/500
2. Press
ENTER to select
Logging.
Logging
Display Test Log
Logging Enabled
Logging Disabled
Erase Log
12:00:00 001/500
3. Press or to scroll to
desired function.
Logging
Display Test Log
Logging Enabled
Logging Disabled
Erase Log
12:00:00 001/500
4. Press
ENTER . The screen will
display Storing... for about 1
second and return to the Editing
Menu.
Editing Menu
Set Clock
Logging
Factory Setup
Set Power Save
12:00:00 001/500

COD3 Plus Colorimeter 10.18 13
FACTORY SETUP
The Factory Setup menu is used in manufacturing of the colorimeter. This menu is not
for use by the operator in the field.
SETTING POWER SAVE
The power saving Auto Shutoff feature will turn the meter off when a button has not
been pushed for a set amount of time. The default setting is disabled. To change the
setting:
1. From the Editing Menu, press
or to scroll to Set
Power Save.
Editing Menu
Set Clock
Logging
Factory Setup
Set Power Save
12:00:00 001/500
2. Press
ENTER to select Set Power
Save.
Set Power Save
Disable
5 Minutes
15 Minutes
30 Minutes
12:00:00 001/500
3. Press or to scroll to
desired function.
Set Power Save
Disable
5 Minutes
15 Minutes
30 Minutes
12:00:00 001/500
4. Press
ENTER . The screen will
display Storing.... for about 1
second and the meter will retun
to the Editing Menu.
Editing Menu
Set Clock
Logging
Factory Setup
Set Power Save
12:00:00 001/500

14 COD3 Plus Colorimeter 10.18
SETTING THE BACKLIGHT TIME
The backlight illuminates the display for enhanced viewing. The default setting is 10
seconds. If Button Control is chosen the backlight button on the key pad will act as
an on/off switch and the backlight will remain on or off when the meter is being used.
When one of the other settings – 10, 20 or 30 seconds – is chosen, the display will be
illuminated for the specified amount of time after any button is pressed.
NOTE: The backlight feature uses a significant amount of power. The longer the
backlight is on, the more frequently the battery will have to be charged if the USB/Wall
Adapter is not being used.
1. From the Editing Menu, press
or to scroll to
Backlight Time.
Editing Menu
Logging
Factory Setup
Set Power Save
Set Backlight Time
12:00:00 001/500
2. Press
ENTER to select Set
Backlight Time.
Set Backlight Time
Button Control
10 seconds
20 seconds
30 seconds
12:00:00 001/500
3. Press or to scroll to
desired option.
Set Backlight Time
Button Control
10 seconds
20 seconds
30 seconds
12:00:00 001/500
4. Press
ENTER . The screen will
display Storing... for about 1
second and the meter will return
to the Editing Menu.
Editing Menu
Logging
Factory Setup
Set Power Save
Set Backlight Time
12:00:00 001/500

COD3 Plus Colorimeter 10.18 15
SELECTING A LANGUAGE
There are seven languages available: English, Spanish, French, Portuguese, Italian,
Chinese, and Japanese.
1. From the Editing Menu, press
or to scroll to
Select Language.
Editing Menu
Factory Setup
Set Power Save
Set Backlight Time
Select Language
12:00:00 001/500
2. Press
ENTER to select Select
Language.
Select Language
English
Spanish
French
Portugese
12:00:00 001/500
3. Press or to scroll to
desired language.
Select Language
English
Spanish
French
Portugese
12:00:00 001/500
4. Press
ENTER . The screen will
display Storing... for about 1
second and the meter will return
to the Editing Menu.
Editing Menu
Set Power Save
Set Backlight Time
Bluetooth Menu
Select Language
12:00:00 001/500
NOTE: If meter unintentionally switches to another language, use the procedure above
to reset the meter to the desired language. For example, to reset the meter to English:
Turn meter on.

16 COD3 Plus Colorimeter 10.18
1. Press one time. Press ENTER .
2. Press five times. Press ENTER .
3. Press
ENTER .
LOOPING MENUS
Long menus, such as the Testing Menu, incorporate a looping feature which allows
the user to quickly reach the last choice in the menu from the first choice. In a looping
menu the last choices in the menu are above the first choice and scrolling upward
moves through the menu in reverse order. Scrolling downward moves through the
menu from first choice to last but the menu starts over following the last choice. So
all menu choices can be reached by scrolling in either direction. The diagrams below
demonstrate a looping menu.
AND SO ON AND SO ON AND SO ON
: : : : : : : : :
: : : : : : : : :
THIRD TO LAST LAST CHOICE LAST CHOICE
SECOND TO LAST AND SO ON AND SO ON
LAST CHOICE : : : : : :
TESTING MENU TESTING MENU TESTING MENU
FIRST CHOICE : : : : : :
SECOND CHOICE THIRD TO LAST THIRD TO LAST
THIRD CHOICE SECOND TO LAST SECOND TO LAST
ANOTHER LAST CHOICE LAST CHOICE
12:00:00 001/500 12:00:00 001/500 12:00:00 001/500
AND ANOTHER FIRST CHOICE FIRST CHOICE
AND SO ON SECOND CHOICE SECOND CHOICE
: : : THIRD CHOICE THIRD CHOICE
: : : ANOTHER ANOTHER
LAST CHOICE AND ANOTHER AND ANOTHER
The feature called Looping Menu can be turned on and off in the Editing Menu. The
default setting is ON.

COD3 Plus Colorimeter 10.18 17
COMPUTER CONNECTION
OUTPUT
USB
COMPUTER CONNECTION
USB Type A, USB mini B, Order Cable Code 1720.
WATERLINK CONNECT 2
The meter may be interfaced with any Windows-based 64 bit computer by using
the LaMotte WaterLink Connect 2 program and a USB cable. The program will store
test information and results in a local database, and allow for exporting this data to
a comma separated value (CSV) file. The meter will send the following data: time/
date stamp, name of test, sample value, sample units, meter name, and location.
To download WaterLink 2 go to http://www.waterlinkconnect.com/ . Then select
“Products” > “WaterLink Connect 2 Application” > “Download”.
BATTERY
BATTERY/AC OPERATION
The colorimeter may be operated on battery power, using a USB wall adapter or USB
computer connection. If using the meter as a bench top unit, use the wall adapter if
possible to extend the battery life. The meter will remain on when the USB adapter is
used.
To charge the battery with the wall adapter, plug the smaller end of the USB cable
(USB mini B connector) into the meter and the larger end of the USB cable (USB Type
A connector) into the wall adapter. Plug the wall adapter into an AC outlet. Reinsert the
USB port plug after charging.
To charge the battery from a computer, plug the smaller end of the USB cable (USB
mini B connector) into the meter and the larger end of the USB cable (USB Type A
connector) into a USB port on a computer.
The battery icon will show no bars and flash when the unit first turns on. Then the
indicator will indicate the battery status by showing 0, 1, 2, 3 or 4 bars.
It will take 5 hours to fully charge a low battery. The battery icon will flash when the
battery is charging. The battery icon will show four bars and stop flashing when it is
fully charged. The charging circuit will automatically switch to a float charge when the
battery is fully charged. The charger may remain connected. Some computers will NOT
supply power to their USB ports during standby operation. The wall adapter will charge
the unit continuously.
The battery icon will show no bars and continuously flash if the battery is getting low
but the unit will still operate normally. A “Low Battery” message on the status bar of

18 COD3 Plus Colorimeter 10.18
the display will replace the time when the battery voltage is too low for proper operation
and accuracy may be degraded. A “Shutdown Low Batt” message on the display will
appear for a few seconds before the power is switched off when the battery is too low to
operate the unit.
To extend the battery life:
◊ Shut down the unit with the power switch when not taking measurements or use
the power save option to have the unit automatically turn off after 5 minutes.
◊ Store the unit in a cool dry place.
◊ Fully charge the battery before storing the unit for extended periods of time.
◊ Limit backlight use. The unit consumes 3X normal power with the backlight on. Set
the backlight time option to 10 seconds, or select “Button Control” and keep the
backlight off.
BATTERY REPLACEMENT
The lithium ion battery used in this unit should last for many years with normal use.
When it no longer powers the unit long enough to meet testing requirements it will need
to be replaced. Lithium ion batteries that are properly charged and stored do not usually
lose all capacity; they just have less capacity after hundreds of charge cycles. This unit
uses a custom battery assembly that is only available from LaMotte Company. Battery
replacement must be performed at a LaMotte authorized repair facility. The water
resistant housing of this meter should not be opened by the user. Contact LaMotte
Company by phone [phone]) or email ([email protected]) for a return
authorization number.
MAINTENANCE
CLEANING
Clean the exterior housing with a damp, lint-free cloth. Do not allow water to enter the
light chamber or any other parts of the meter. To clean the light chamber and optics
area, point a can of compressed air into the light chamber and blow the pressurized air
into the light chamber. Use a cotton swab dampened with Windex®window cleaner to
gently swab the interior of the chamber. Do not use alcohol; it will leave a thin residue
over the optics when dry.
REPAIRS
Should it be necessary to return the meter for repair or servicing, pack the meter
carefully in a suitable container with adequate packing material. A return authorization
number must be obtained from LaMotte Company by calling 800-344-3100 (US only) or
410-778-3100, faxing 410-778-6394, or emailing [e-mail]. Often a problem
can be resolved over the phone or by email. If a return of the meter is necessary, attach
a letter with the return authorization number, meter serial number, a brief description
of problem and contact information including phone and FAX numbers to the shipping

COD3 Plus Colorimeter 10.18 19
carton. This information will enable the service department to make the required
repairs more efficiently.
METER DISPOSAL
Waste Electrical and Electronic Equipment (WEEE)
Natural resources were used in the production of this equipment. This equipment may
contain materials that are hazardous to health and the environment. To avoid harm to
the environment and natural resources, the use of appropriate take-back systems is
recommended. The crossed out wheeled bin symbol on the meter encourages the use
of these systems when disposing of this equipment.
Take-back systems will allow the materials to be reused or recycled in a way that will
not harm the environment. For more information on approved collection, reuse, and
recycling systems contact local or regional waste administration or recycling services.
GENERAL OPERATING INFORMATION
OVERVIEW
The meter is a portable, microprocessor controlled, direct reading colorimeter. It has
a graphical liquid crystal display and 6 button keypad. These allow the user to select
options from the menu driven software, to directly read test results or to review stored
results of previous tests in the data logger. The menus can be displayed in seven
different languages.
The LaMotte tests are precalibrated for LaMotte reagent systems.The colorimeter
displays the result of these tests directly in units of concentration.
The optics feature a colored LED. The LED has a corresponding silicon photoiode with
an integrated interference filter. The interference filter selects a narrow band of light
from the corresponding LED for the colorimetric measurements.
A USB wall adapter, USB computer connection or lithium battery powers the
colorimeter.
GENERAL OPERATING INFORMATION
The operation of the colorimeter is controlled by the menu driven software and user
interface. A menu is a list of choices. This allows a selection of various tasks for the
colorieter to perform, such as scan blank and scan sample. The keypad is used to
make menu selections that are viewed on the display.

20 COD3 Plus Colorimeter 10.18
THE KEYPAD
The keypad has 6 buttons which are used to perform specific tasks.
This button will scroll up through a list of menu selections.
ENTER The button is used to select choices in a menu viewed on the
display.
This button controls the backlight on the display.
This button will scroll down through a list of menu selections.
EXIT This button exits to the previous menu.
This button turns the meter on or off.
EXIT
ENTER
THE DISPLAY AND MENUS
The display allows menu selections to be viewed and selected. These selections
instruct the colorimeter to perform specific tasks. The menus are viewed in the display
using two general formats that are followed from one menu to the next. Each menu is
a list of choices or selections.
The display has a header line at the top and a footer line at the bottom. The header
displays the title of the current menu. The footer line displays the time and the date,
the data logger status, the bluetooth/printer status and the battery status. The menu
selection window is in the middle of the display between the header and the footer.
The menu selection window displays information in two general formats. In the first
format only menu selections are displayed. Up to 4 lines of menu selections may be
displayed. If more selections are available they can be viewed by pressing the arrow
buttons to scroll the other menu selections into the menu selection
window. Think of the menu selections as a vertical list in the display that moves up