LaMotte DC1500 CHLORINE User manual

DC1500 CHLORINE
Chlorine Colorimeter Kit • DPD Tablet
Code 3240
Firmware Version 2.10

2

CONTENTS
Chlorine & Bromine DPD Tablet Kit
Kit Contents.......................................................................................... 5
Accessories .......................................................................................... 5
Test Method Specifications
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

4
Tubes and Chambers.........................................................................27
Sample Dilution Techniques ............................................................27
General information
Packaging and Delivery ....................................................................28
General Precautions..........................................................................28
Safety Precautions............................................................................28
Limits of Liability ...............................................................................29
Specifications ....................................................................................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

5
DC1500 Chlorine & Bromine DPD Tablet Kit
Kit Contents
QUANTITY CONTENTS CODE
100 *Chlorine DPD #1 Instrument Grade Tablets *6903A-J
100 *Chlorine DPD #3 Instrument Grade Tablets *6197A-J
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 Tablet Manual
3240-MN-CL
1 DC1500-CL Chlorine Colorimeter,
DPD Tablet Quick Start Guide
3240-QG-CL
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to
www.lamotte.com. Search the four digit reagent code number listed on the
reagent label, in the contents list or in the test procedures. Omit any letter
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.
Emergency information for all LaMotte reagents is available from Chem-Tel
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
To order individual reagents or test kit components, use the specified 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

6
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
buffered 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 buffered 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, fill 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 specifically 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.

7
ANALYSIS - CHLORINE
PROCEDURE – FREE CHLORINE
1. Fill the Water Sample Collecting
Bottle (0688) with sample
water.
2. Press and hold until
colorimeter turns on.
Main Menu
Testing Menu
Editing Menu
12:00:00 001/500
3. Press ENTER to select Testing
Menu.
All Tests
015 Bromine L DPD
016 Bromine T DPD
024 Chlorine L DPD
025 Chlorine T DPD
12:00:00 001/500
4. Scroll to and select 025 Chlorine
T DPD from menu.
025 Chlorine T 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.
Chlorine

8
6. Insert tube into chamber, close
lid and select Scan Blank.
7. Remove tube from colorimeter.
Add one *Chlorine DPD #1
Instrument Grade Tablet
(6903A).
Cap tube and shake for 10
seconds. Invert slowly 5 times.
Solution will turn pink if free
chlorine is present.
8. Immediately insert tube into
chamber. Close lid. Select Scan
Sample. Record result as Free
Chlorine.
025 Chlorine T DPD
0.99 ppm
Scan BLank
Scan Sample
12:00:00 001/500
PROCEDURE – COMBINED CHLORINE
9. Remove tube from colorimeter.
Add one *Chlorine DPD #3
Instrument Grade Tablet
(6197A).
Cap tube and shake for 10
seconds. Invert slowly 5 times.
An increase in color represents
combined chlorine.
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.
Chlorine

9
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.
12. Press to turn off the colorimeter or press EXIT to exit to a
previous menu or make another menu selection.
Levels of chlorine about 6 mg/L will cause a bleaching effect 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 6 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 6 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.
Chlorine

10
ANALYSIS - BROMINE
PROCEDURE
1. Fill the Water Sample Collecting
Bottle (0688) with sample
water.
2. Press and hold until
colorimeter turns on.
Main Menu
Testing Menu
Editing Menu
12:00:00 001/500
3. Press ENTER to select Testing
Menu.
All Tests
015 Bromine L DPD
016 Bromine T DPD
024 Chlorine L DPD
025 Chlorine T DPD
12:00:00 001/500
4. Scroll to and select 016
Bromine T DPD from menu.
016 Bromine T 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.
Bromine

11
6. Insert tube into chamber, close
lid and select Scan Blank.
7. Remove tube from colorimeter.
Add one *Chlorine DPD #1
Instrument Grade Tablet
(6903A).
Cap tube and shake for 10
seconds. Invert slowly 5 times.
Solution will turn pink if bromine
is present.
8. Immediately insert tube into
chamber. Close lid. Select
Scan Sample. Record result as
Bromine.
016 Bromine T DPD
0.99 ppm
Scan BLank
Scan Sample
12:00:00 001/500
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.
Bromine

12
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
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 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
015 Bromine L DPD
016 Bromine T DPD
024 Chlorine L DPD
025 Chlorine T DPD
12:00:00 001/500
3. Scroll to and select 025 Chlorine
T DPD from menu.
025 Chlorine T DPD
Scan Blank
Scan Sample
12:00:00 001/500
Calibration

13
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.
6. Remove tube from colorimeter.
Add one *Chlorine DPD #1
Instrument Grade Tablet
(6903A).
Cap tube and shake for 10
seconds. Invert slowly 5 times.
Solution will turn pink if free
chlorine is present.
7. Immediately insert tube into
chamber. Close lid. Select Scan
Sample.
025 Chlorine T DPD
0.99 ppm
Scan BLank
Scan Sample
12:00:00 001/500
8. Press to scroll to
Calibrate.
025 Chlorine T DPD
0.99 ppm
%T/Abs
Calibrate
12:00:00 001/500
Calibration

14
9. Press ENTER to select Calibrate.
A reverse font (light background
with dark characters) will appear
to indicate that the reading can
be adjusted.
025 Chlorine T 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.
025 Chlorine T DPD
1.00 ppm
∧, ∨=Edit, ENTER=Save
∧ +ENTER=Default
12:00:00 001/500
11. 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.
025 Chlorine T DPD
1.00 ppm
%T/Abs
Calibrate
12:00:00 001/500
Calibration

15
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.
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

16
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

17
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

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

19
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.
1. Press one time. Press ENTER .
2. Press five times. Press ENTER .
3. Press ENTER .

20
LOOPING MENUS
Long menus, such as the Tsting 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.