LaMotte 3240-LI User manual

DC1500 CHLORINE

Chlorine Colorimeter Kit • DPD Liquid

Code 3240-LI

Firmware Version 2.10 or greater

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CONTENTS

Chlorine & Bromine DPD Liquid Kit

 Kit Contents .......................................................................................... 5

 Accessories .......................................................................................... 5

Test Method Specications

 Application ............................................................................................ 6

 Range ..................................................................................................... 6

 Method .................................................................................................. 6

 Handling & Preservation .................................................................... 6

 Interferences ........................................................................................ 6

 Calibration ............................................................................................ 6

Analysis

 Chlorine ................................................................................................. 7

 Bromine ............................................................................................... 10

Calibration

 Chlorine Standards ...........................................................................12

 Chlorine Calibration Procedure ....................................................... 12

Set Up

 Setting the Clock ...............................................................................15

 Logging Data ......................................................................................16

 Factory Setup .....................................................................................17

 Setting Power Save ...........................................................................17

 Setting Backlight Time .....................................................................18

 Selecting A Language .......................................................................19

 Looping Menus ................................................................................... 20

Computer Connection

 Output ..................................................................................................21

 Computer Connection ....................................................................... 21

Battery

 Battery/AC Operation ........................................................................21

 Battery Replacement ........................................................................ 22

Maintenance

 Cleaning ..............................................................................................22

 Repairs ................................................................................................22

 Meter Disposal ...................................................................................23

General Operating Information

 Overview .............................................................................................. 24

 General Operating Information .......................................................24

 The Keypad .........................................................................................24

 The Display and Menus ..................................................................... 25

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 Tubes and Chambers.........................................................................27

 Sample Dilution Techniques ............................................................27

General information

 Packaging and Delivery ....................................................................28

 General Precautions .......................................................................... 28

 Safety Precautions ............................................................................ 28

 Limits of Liability ...............................................................................29

 Specications ....................................................................................29

 CE .........................................................................................................30

 IP67 ...................................................................................................... 30

 Warranty .............................................................................................30

 Register Your Meter...........................................................................30

Trouble Shooting Guide

 Error Messages ..................................................................................31

 Calibration ..........................................................................................31

 Stray Light ..........................................................................................31

 Troubleshooting Guide ......................................................................32

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DC1500 Chlorine & Bromine DPD Liquid Kit

 Kit Contents

QUANTITY CONTENTS CODE

30 mL DPD 1A Free Chlorine Reagent P-6740-G

30 mL *DPD 1B Free Chlorine Reagent *P-6741-G

30 mL *DPD 3 Total Chlorine Reagent *P-6743-G

1 Colorimeter Tubes, w/caps,set of 6 0290-6

1 Water Sample Collecting Bottle 0688

1 1500 Colorimeter for Chlorine DPD 27926-CL

1 USB Wall Adapter 1721

1 USB Cable 1720

1 DC1500-CL Chlorine Colorimeter, DPD

Liquid Manual

1 DC1500-CL Chlorine Colorimeter, DPD

Liquid Quick Start Guide

*WARNING: Reagents marked with an * are considered to be potential health
hazards.

reagent label, in the contents
that follows or precedes the four digit code number. For example if code is
4450WT-H, search 4450. To obtain a printed copy, contact LaMotte by e-mail,
phone or fax.

To view or print a Safety Data Sheet (SDS) for these reagents go to

Search the four digit reagent code number listed on the

list or in the test procedures. Omit any letter

3240-LI-MN-CL

3240-LI-QG-CL

To order individual reagents or test kit components, use the specied code

number.

 Accessories

DESCRIPTION CODE

Test Tubes, with Caps 0290-6

Replacement Chamber 3-0038

USB Cable 1720

USB Wall Adapter 1721

Car Charger 5-0132

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TEST METHODS SPECIFICATIONS

 APPLICATION

Drinking water supplies and distribution systems, swimming pool and
spas, sewage and chlorinated waste waters, process waters and sanitizing
solutions.

 RANGE

0 to 4.0 ppm Chlorine (may be extended by dilution)
0 to 7.0 ppm Bromine (may be extended by dilution)

 METHOD

In the absence of Iodide, Free Available Chlorine reacts instantly with the

buered diethyl-p-phenylenediamine indicator (DPD) to produce a pink-red

color in proportion to the amount of chlorine present. Subsequent addition of
potassium iodide produces a rapid color response from the combined forms

of chlorine (chloramines). In buered samples, bromine reacts with disthyl-

p-phenylene diamine (DPD) to produce a pink-red color in proportion to the
concentration of bromine present.

 HANDLING & PRESERVATION

Chlorine and bromine in aqueous solutions, particularly weak solutions, are
not stable. Exposure to sunlight or agitation will accelerate the reduction of

chlorine and bromine. For chlorine samples, ll sample containers to the top

and cap tightly. Analyze samples as soon as possible after collection. Samples
to be analyzed for bromine cannot be preserved or stored.

 INTERFERENCES

The only interfering substance likely to be encountered is oxidized
manganese. The extent of this interference can be determined by treating a
sample with sodium arsenite to destroy the chlorine or bromine present, so
that the amount of interference can be estimated. Chlorine, bromine, and
iodine will give a positive result and should be considered an interference

unless the test is being performed specically for that parameter.

 CALIBRATION

The colorimeter is precalibrated. In order to comply with NPDWR or NPDES
reporting regulations, the calibration should be checked periodically by using
a set of reference standards including a 0 mg/L blank and 0.3, 1.0, and 3.5
mg/L chlorine. To prepare these standards, a LaMotte 1000 mg/L standard
chlorine equivalent solution (Code 3858) is available. Consult with your local
regulatory agency to determine standardization frequency.

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ANALYSIS - CHLORINE

PROCEDURE – FREE CHLORINE

1. Fill the Water Sample Collecting
Bottle (0688) with sample
water.

Chlorine

2. Press and hold until
colorimeter turns on.

3. Press

ENTER

to select Testing

Menu.

4. Scroll to and select 024 Chlorine
L DPD from menu.

Main Menu

Testing Menu

Editing Menu

12:00:00 001/500

All Tests

015 Bromine L DPD

016 Bromine T DPD

024 Chlorine L DPD

025 Chlorine T DPD

12:00:00 001/500

024 Chlorine L DPD

Scan Blank

Scan Sample

12:00:00 001/500

5. Rinse a clean tube (0290) with
sample water. Fill to the 10 mL
line with sample. Cap and wipe
dry.

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6. Insert tube into chamber, close
lid and select Scan Blank.

Chlorine

7. Remove tube from colorimeter.
Add 5 drops of DPD 1A Free
Chlorine Reagent (P-6740) and
add 5 drops of *DPD 1B Free
Chlorine Reagent (P-6741), Cap
and invert to mix. The solution
will be pink if chlorine is present.
Read within 30 seconds.

8. Immediately insert tube into
chamber. Close lid. Select Scan
Sample. Record result as Free
Chlorine.

0.99 ppm

Scan BLank

Scan Sample

12:00:00 001/500

PROCEDURE – COMBINED CHLORINE

9. Remove tube from colorimeter.
Add 5 drops of *DPD 3 Total
Chlorine Reagent (P-6743). Cap
and invert to mix. An increase
in color represents Combined
Chlorine.

DPD

DPD

024 Chlorine L DPD

1A

DPD

3

1B

NOTE: For wastewater samples, Standard Methods for the Examination of Water and
Wastewater recommends waiting 2 minutes for full color development when testing

total chlorine.

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10. Insert tube into chamber, close
lid and select Scan Sample.
Record result as Total Chlorine
(Monochloramine, Dichloramine,
and Nitrogen Trichloride)
present in the water sample.

11. Subtract free chlorine reading from total chlorine reading to obtain
concentration of combined chlorine.

Chlorine

12. Press to turn o the colorimeter or press

EXIT

to exit to a

previous menu or make another menu selection.

Levels of chlorine about 4 mg/L will cause a bleaching eect on the DPD

indicator, and may give a false indication that no chlorine is present. If if is
possible that the chlorine concentration is greater than 4 mg/L, perform test
on a diluted sample and multiply the result by appropriate dilution factor.

CAUTION: DO NOT leave reacted samples in test tubes. Discard sample and
thoroughly rinse tubes. If allowed to remain, DPD wil stain tubes, signigicantly
impairing the operation of the colorimeter. If necessary, acid wash, and
vigorously clean glassware with test tube brush and detergent.

NOTE: For the most accurate results, samples over 4 ppm chlorine should be
diluted with chlorine demand free water and re-tested.

NOTE: The meter will remember the last scanned blank reading. It is not
necessary to scan a blank each time the test is performed. To use the
previous blank reading, instead of scanning a new one, scroll to Scan Sample
and proceed. For the most accurate results, the meter should be blanked
before each test and the same tube should be used for the blank and the
reacted sample.

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ANALYSIS - BROMINE

PROCEDURE

1. Fill the Water Sample Collecting
Bottle (0688) with sample

Bromine

water.

2. Press and hold until
colorimeter turns on.

3. Press

ENTER

to select Testing

Menu.

4. Scroll to and select 015
Bromine L DPD from menu.

Main Menu

Testing Menu

Editing Menu

12:00:00 001/500

All Tests

015 Bromine L DPD

016 Bromine T DPD

024 Chlorine L DPD

025 Chlorine T DPD

12:00:00 001/500

015 Bromine L DPD

Scan Blank

Scan Sample

12:00:00 001/500

5. Rinse a clean tube (0290) with
sample water. Fill to the 10 mL
line with sample. Cap and wipe
dry.

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6. Insert tube into chamber, close
lid and select Scan Blank.

Bromine

7. Remove tube from colorimeter.
Add 5 drops of DPD 1A Free
Chlorine Reagent (P-6740) and
add 5 drops of *DPD 1B Free
Chlorine Reagent (P-6741), Cap
and invert to mix. The solution
will be pink if bromine is present.
Read within 30 seconds.

8. Immediately insert tube into
chamber. Close lid. Select
Scan Sample. Record result as
Bromine.

NOTE: For the most accurate results, samples over 7 ppm bromine should be
diluted with chlorine demand free water and re-tested.

NOTE: The meter will remember the last scanned blank reading. It is not
necessary to scan a blank each time the test is performed. To use the
previous blank reading, instead of scanning a new one, scroll to Scan Sample
and proceed. For the most accurate results, the meter should be blanked
before each test and the same tube should be used for the blank and the
reacted sample.

0.99 ppm

Scan BLank

Scan Sample

12:00:00 001/500

DPD

DPD

015 Bromine L DPD

1A

1B

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CALIBRATION

 CHLORINE STANDARDS

The meter should be calibrated with free chlorine standards. The calibration
should be done with a distilled or deionized water blank and one chlorine
standard of known concentration. The concentration of the calibration

Calibration

standard should be similar to the expected concentration of the sample that
will be tested.

To perform a bromine calibration, prepare a bromine with a concentration
that is equivenlent to a chlorine dioxide standard that is within the range of
the chlorine dioxide test. (1 ppm chlorine = 1.9 ppm bromine). Follow the
procedure below but select the bromine test.

Chlorine Secondary Standards (Code 4140-03) are available to verify the
performance of the meter.

CHLORINE CALIBRATION PROCEDURE

1. Press and briey hold to
turn the meter on. The LaMotte
logo screen will appear for about
3 seconds and the Main Menu
will appear.

2. Press

3. Scroll to and select 024 Chlorine

ENTER

to select Testing

Menu.

L DPD from menu.

Main Menu

Testing Menu

Editing Menu

12:00:00 001/500

All Tests

015 Bromine L DPD

016 Bromine T DPD

024 Chlorine L DPD

025 Chlorine T DPD

12:00:00 001/500

024 Chlorine L DPD

Scan Blank

Scan Sample

12:00:00 001/500

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4. Rinse a clean tube (0290)
three times with the chlorine
standard. Fill to the 10 mL line
with the chlorine standard. Cap
the tube. Dry the tube with a
lint-free cloth.

5. Insert tube into chamber, close
lid and select Scan Blank.

Calibration

6. Remove tube from colorimeter.
Add 5 drops of DPD 1A Free
Chlorine Reagent (P-6740) and
add 5 drops of *DPD 1B Free
Chlorine Reagent (P-6741), Cap
and invert to mix. The solution
will be pink if chlorine is present.
Read within 30 seconds.

7. Immediately insert tube into
chamber. Close lid. Select Scan
Sample.

8. Press to scroll to
Calibrate.

DPD

DPD

024 Chlorine L DPD

1A

1B

0.99 ppm

Scan BLank

Scan Sample

12:00:00 001/500

024 Chlorine L DPD

0.99 ppm

%T/Abs

Calibrate

12:00:00 001/500

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9. Press
A reverse font (light background
with dark characters) will appear
to indicate that the reading can
be adjusted.

Calibration

ENTER

to select Calibrate.

024 Chlorine L DPD

0.99 ppm

∧, ∨=Edit, ENTER=Save

∧ +ENTER=Default

12:00:00 001/500

10. Press or to
adjust the value shown to the
concentration of the prepared
standard, 1.00 in this example.
NOTE: A maximum adjustment
of 25% is possible.

11. Press

ENTER

to save the value.

To leave the Calibration
procedure without saving the
adjustment, press

Press
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.

and

EXIT

ENTER

.

at any

024 Chlorine L DPD

1.00 ppm

∧, ∨=Edit, ENTER=Save

∧ +ENTER=Default

12:00:00 001/500

024 Chlorine L DPD

1.00 ppm

%T/Abs

Calibrate

12:00:00 001/500

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SET UP

 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.

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.

3. Press

ENTER

to select the nal

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

Set Time

Year: 2000

12:00:00 001/500

Editing Menu

Set Clock

Logging

Factory Setup

Set Power Save

12:00:00 001/500

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 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.

2. Press

ENTER

to select Logging.

3. Press or to scroll to

desired function.

Editing Menu

Set Clock

Logging

Factory Setup

Set Power Save

12:00:00 001/500

Logging

Display Test Log

Logging Enabled

Logging Disabled

Erase Log

12:00:00 001/500

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.

Set Clock

Logging

Editing Menu

Factory Setup

Set Power Save

12:00:00 001/500

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 FACTORY SETUP

The Factory Setup menu is used in manufacturing of the colorimeter. This

menu is not for use by the operator in the eld.

 SETTING POWER SAVE

The power saving Auto Shuto feature will turn the meter o 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.

2. Press

ENTER

to select Set Power

Save.

3. Press or to scroll to

desired function.

Editing Menu

Set Clock

Logging

Factory Setup

Set Power Save

12:00:00 001/500

Set Power Save

Disable

5 Minutes

15 Minutes

30 Minutes

12:00:00 001/500

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.

Set Clock

Logging

Editing Menu

Factory Setup

Set Power Save

12:00:00 001/500

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 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/o switch and the backlight will remain on or o 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 specied amount of time after

any button is pressed.

NOTE: The backlight feature uses a signicant 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.

2. Press

ENTER

to select Set

Backlight Time.

3. Press or to scroll to

desired option.

Editing Menu

Logging

Factory Setup

Set Power Save

Set Backlight Time

12:00:00 001/500

Set Backlight Time

Button Control

10 seconds

20 seconds

30 seconds

12:00:00 001/500

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.

Logging

Factory Setup

Editing Menu

Set Power Save

Set Backlight Time

12:00:00 001/500

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 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.

2. Press

ENTER

to select Select

Language.

3. Press or to scroll to

desired language.

Editing Menu

Factory Setup

Set Power Save

Set Backlight Time

Select Language

12:00:00 001/500

Select Language

English

Spanish

French

Portugese

12:00:00 001/500

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.

Set Power Save

Set Backlight Time

Editing Menu

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.

1. Press one time. Press

2. Press ve times. Press

3. Press

ENTER

.

ENTER

ENTER

.

.

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 LOOPING MENUS

Long menus, such as All Tests, incorporate a looping feature which allows

the user to quickly reach the last choice in the menu from the rst choice.
In a looping menu the last choices in the menu are above the rst choice

and scrolling upward moves through the menu in reverse order. Scrolling

downward moves through the menu from rst 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

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

SECOND TO LAST SECOND TO LAST

The feature called Looping Menu can be turned on and o in the Editing
Menu. The default setting is ON.

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COMPUTER CONNECTION

 OUTPUT

USB

 COMPUTER CONNECTION

USB Type A, USB mini B, Order Cable Code 1720.

 WATERLINK CONNECT

The meter may be interfaced with any Windows-based 64 bit computer
by using the LaMotte WaterLink Connect 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) le. The meter

will send the following data: time/date stamp, name of test, sample value,
sample units, meter name, and location. To download WaterLink go t

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 rubber 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 ash when the unit rst turns on. Then the indicator will indicate the

battery status by showing 0, 1, 2, 3, or 4 bars.

It will take 6 hours to fully charge a low battery. The battery icon will ash

when the battery is charging. The battery icon will show four bars and stop

ashing when it is fully charged. The charging circuit will automatically switch
to a oat 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.

Storing the meter above ambient room temperature will decrease the battery
charge more quickly than storage at room temperature. If the meter does
not turn on, it means that the battery is at a very low charge. Charging the
battery with the wall adapter in this state may take up to 10 hours. At low
temperatures, approaching 0 °C, the battery will charge more slowly. It will not
charge at all below 0 °C. The battery icon will show no bars and continuously

ash if the battery is getting low but the unit will still operate normally. A

“Low Battery” message on the status bar of the display will replace the time

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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 o when the battery is too low to
operate the unit. When the battery icon simultaneously ashes bars 1 and 2

followed by bars 3 and 4, it is an indication that the battery is damaged and
technical support should be contacted.

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 o after 5 minutes.

• Store the unit at a moderate temperature.

• Fully charge the battery before storing the unit for extended periods
of time.

• Fully charge the battery at least once per year. Failure to do so may
result in a permanently drained battery.

• 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 o.

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

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.

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 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.

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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 dierent 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 lter. The interference lter 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.

 THE KEYPAD

The keypad has 6 buttons which are used to perform specic tasks.

ENTER

EXIT

This button will scroll up through a list of menu selections.

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.

This button exits to the previous menu.

This button turns the meter on or o.

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ENTER

EX IT

 THE DISPLAY AND MENUS

The display allows menu selections to be viewed and selected. These

selections instruct the colorimeter to perform specic 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 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 rst 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 or down each time an arrow button

is pressed. Some menus in the colorimeter are looping menus.
The top and bottom menu choices are connected in a loop. Scrolling down
past the bottom of the menu will lead to the top of the menu. Scrolling up
past the top of the menu will lead to the bottom of the menu.

Header Menu Title

Main Window Selection First Choice

Second Choice

Third Choice

Another

Footer

12:00:00 001/500 P

And Another

And So On

A light bar will indicate the menu choice. As the menu is scrolled through, the

light bar will highlight dierent menu choices. Pressing the

ENTER

button will

select the menu choice that is indicated by the light bar.
In the second format the menu choice window takes advantage of the

graphical capabilities of the display. Large format graphic information, such
as test results or error messages or the LaMotte logo is displayed. The top
two lines of the display are used to display information in a large, easy to read

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format. The menus work in the same way as previously described but two lines
of the menu are visible at the bottom of the display.

Header Menu Title

Message or Result Window

Result or
Message

Another

Main Window Selection And Another

Footer

As described previously, the
current menu and a return to the previous menu. This allows a rapid exit from
an inner menu to the main menu by repeatedly pushing the
Pushing at any time will turn the colorimeter o.

The display may show the following messages:

Battery Status

More choices are available and can be viewed by scrolling
up and/or down through the display.

EXIT

12:00:00 001/500

And So On

Last Choice

button allows an exit or escape from the

EXIT

button.

Header Identies the current menu and information on units and

reagent systems if applicable.

Footer In the data logging mode the number of the data point

is displayed and the total number of data points in the
memory will be shown. The footer also shows current time
and battery status

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 TUBES AND CHAMBERS

The colorimeter uses one type of tube (Code 0290) for all test factors.
The handling of the tubes is of utmost importance. Tubes must be clean and

free from lint, ngerprints, dried spills and signicant scratches, especially

the central zone between the bottom and the sample line.

Scratches, ngerprints and water droplets on the tube can cause stray light

interference leading to inaccurate results. Tubes that have been scratched in
the light zone through excessive use should be discarded and replaced with
new ones.

Tubes should always be washed on the inside and outside with mild detergent

prior to use to remove dirt or ngerprints. The tubes should be allowed to air-

dry in an inverted position to prevent dust from entering the tubes. Dry tubes
should be stored with the caps on to prevent contamination.

After a tube has been lled and capped, it should be held by the cap and the

outside surface should be wiped with a clean, lint-free absorbent cloth until it
is dry and smudge-free. Handling the tube only by the cap will avoid problems

from ngerprints. Always set the clean tube aside on a clean surface that will

not contaminate the tube. It is imperative that the tubes and light chamber be
clean and dry. The outside of the tubes should be dried with a clean, lint-free
cloth or disposable wipe before they are placed in the meter chamber.

Tubes should be emptied and cleaned as soon as possible after reading a
sample to prevent deposition of particulates on the inside of the tubes.

Variability in the geometry of the glassware and technique is the predominate
cause of variability in results. Slight variations in wall thickness and the
diameter of the tubes may lead to slight variations in the test results. To
eliminate this error the tubes should be placed in the chamber with the same
orientation each time.

Chambers which have been scratched through excessive use should be
discarded and replaced with a new one.

 SAMPLE DILUTION TECHNIQUES

If a test result is out of the range of the meter, it must be diluted. The test
should then be repeated on the diluted sample. The following table gives quick
reference guidelines for dilutions of various proportions.

Amount of Sample Deionized Water to Bring

Final Volume to 10 mL

10 mL 0 mL 1

5 mL 5 mL 2

2.5 mL 7.5 mL 4

1 mL 9 mL 10

0.5 mL 9.5 mL 20

All dilutions are based on a nal volume of 10 mL, so several dilutions will

require small volumes of the water sample. Graduated pipets should be
used for all dilutions. If volumetric glassware is not available, dilutions can

28

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be made with the colorimeter tube. Fill the tube to the 10 mL line with the
sample and then transfer it to another container. Add 10 mL volumes of
deionized water to the container and mix. Transfer 10 mL of the diluted
sample to the colorimeter tube and follow the test procedure. Repeat the
dilution and testing procedures until the result falls within the range of the
calibration. Multiply the test result by the dilution factor. For example, if 10 mL
of the sample water is diluted with three 10 mL volumes of deionized water,
the dilution factor is four. The test result of the diluted sample should be
multiplied by four.

GENERAL INFORMATION

 PACKAGING AND DELIVERY

Experienced packaging personnel at LaMotte Company assure adequate
protection against normal hazards encountered in transportation of
shipments.

After the product leaves LaMotte Company, all responsibility for safe delivery

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

immediately with the transportation company to receive compensation for
damaged goods.

 GENERAL PRECAUTIONS

READ THE INSTRUCTION MANUAL BEFORE ATTEMPTING TO SET UP OR

OPERATE THE METER. Failure to do so could result in personal injury or
damage to the meter. The meter should not be used or stored in a wet or
corrosive environment. Care should be taken to prevent water from wet tubes
from entering the meter chamber.

NEVER PUT WET TUBES IN THE METER.

 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. Safety Data Sheets (SDS) can be found at

Keep equipment and reagent chemicals out of the reach of young children.
Ensure that the protection provided by this equipment is not impaired. Do not

intall or use this equipment in a manner that is not indicated in this manual.

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 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.

 SPECIFICATIONS & RANGES

INSTRUMENT TYPE: Colorimeter

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

display

Wavelengths 525 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

Light Sources 1 LEDs

Detectors 1 silicon photodiode

Modes Pre-programmed tests, absorbance, %T

Pre-Programmed Tests YES, with automatic wavelength selection

Languages English, Spanish, French, Portuguese, Italian,

Chinese, Japanese

Temperature Operation: 0-50 °C; Storage: -40-60 °C

Operation Humidity
Range

USB Port Mini B

Power Requirements USB wall adapter, USB computer connection or

Battery Charge Life: Approximately 380 tests with

Electrical Rating Rated voltage (5V), Rated power of input current

Data Logger 500 test results

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

0-90 % RH, non-condensing

lithium ion rechargeable battery

backlight on to 1000 tests with backlight o.

Battery Life: Approximately 500 charges.

(1.0A) at mini-USB input port

Weight 13 oz, 362 g (meter only)

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 CE COMPLIANCE

The colorimeter has been independently tested and has earned the European
CE Mark of compliance for electromagnetic compatibility and safety. To view

certicates of compliance, go t

 IP67 Certication

The meets IP67 standards for protection against dust and immersion only
when the USB port plug is in place. Documentation is available at www.

TROUBLESHOOTING

 ERROR MESSAGES

Over Range

If the message OVERRANGE is displayed when scanning a sample, the
sample may be over range or under range. If the sample is over range the
sample should be diluted and tested again (see Sample Dilution Techniques
and Volumetric Measurements, page 27).

If overrange is displayed, press

ENTER

to continue testing on diluted

samples.

Note: After pressing
overrange cncentration will be
displayed. This concentration is an
approximation only.

ENTER

, the

Overrange

<Enter> continue

Scan Blank

Scan Sample

12:00:00 001/500

31

025 Chlorine T DPD

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 CALIBRATION

As with all pre-calibrated meters, it is highly recommended, even if not
required by regulations, that the user periodically verify the performance of
the meter by running standards with a predetermined concentration. Results

outside of specication are an indication that the meter needs to be adjusted.

This can be done following the user calibration described on page 24. If the
user calibration fails to properly adjust the meter then the meter should be
returned to LaMotte Company for recalibration. (See page 30).

 STRAY LIGHT

The colorimeter should have no problems with stray light. Make sure that the
sample compartment lid is always fully closed.

 TROUBLESHOOTING GUIDE

PROBLEM REASON SOLUTION

Flashing

“Low Battery” Battery voltage is very

“Shut Down Low Batt”
Shut Down

“Overrange” Sample is outside of

Low battery. Readings
are reliable.

low. Readings are not
reliable.

Battery is too low to
operate the unit.

acceptable range.

Charge battery or use
USB wall/computer
adapter.

Charge battery or use
USB wall/computer
adapter.

Charge battery or use
USB wall/computer
adapter.

Dilute sample and
test again.

Unusually large
negative or positive
readings when
performing calibration

Incorrect standards
used to calibrate meter.

Use fresh 0.0
standard in clean
tube. Reset meter
to factory default
settings. Recalibrate
meter.

3240-LI-MN-CL 08.19

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