LaMotte Tracer Total Chlorine PockeTester 1740 User manual

Water Testing Leader Since 1919!
Tracer Total Chlorine
PockeTesterTM
Code 1740
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

WARNING! This set contains chemicals
that may be harmful if misued. Read
cautions on individual containers
carefully. Not to be used by children
except under adult supervision.

TRACER
TOTAL CHLORINE POCKETESTERTM • CODE 1740
Introduction .....................................................................................4
Specifications..................................................................................4
Contents ..........................................................................................4
Parts & Accessories........................................................................5
Meter Description
Front Panel Description ............................................................... 5
TRACER Display .......................................................................... 5
Basic Operation
Powering the TRACER................................................................. 6
Electrode Recognition ................................................................. 6
Automatic Calibration .................................................................. 6
Changing the Display Temperature Units ................................... 6
Low Battery Indicator................................................................... 6
Testing
Conditioning the Electrode.......................................................... 7
Measurement ............................................................................... 7
Storing Readings ......................................................................... 7
Recalling Stored Readings.......................................................... 8
For Best Accuracy........................................................................ 8
Offset Adjustment Procedure ...................................................... 9
Validation Procedure
Required Materials...................................................................... 10
Preparation of 1ppm Standard................................................... 10
Procedure.................................................................................... 10
Notes ........................................................................................... 11
Maintenance
Storage........................................................................................ 12
Battery Replacement .................................................................. 12
Cleaning the Electrode ............................................................. 12
Replacing the Electrode ............................................................. 13
Troubleshooting .......................................................................... 13
Expanding Your TRACER ........................................................... 14
Warranty ...................................................................................... 14

4
INTRODUCTION
Congratulations on your purchase of the TRACER Total Chlorine PockeTester. The
TRACER is a revolutionary, f rst of its kind measurement device that offers direct
reading of Total Chlorine from 0.01 to 10.00 ppm. The TRACER is easy to use and
maintain, and offers high accuracy, automatic calibration, with fast response and
simultaneous Chlorine and Temperature displays and a 15-reading memory storage.
Careful use and maintenance will provide years of reliable service. The TRACER
testing procedure complies with the electrode method described in EPA 40 CFR
Part 136.3, Table 1B (1994) and Standard Methods for the Examination of
Wastewater,
18th Ed., 4500-Cl I, p 4-65, which requires that potassium iodide and
a buffer be added to the sample before testing.
SPECIFICATIONS
Display Multifunction display with bar graph
Operating conditions 32 to 122°F (0 to 50°C) and < 80% RH
Chlorine range 0.01 to 10.00 ppm (Total Chlorine)
Chlorine accuracy 0.5 to 5.00 ppm; ± (10% reading + 0.01 ppm)
5.00 to 10.00 ppm; ± (15% reading + 0.05 ppm)
Temperature 23 to 194°F ( 5 to 90°C)
measurement range
Temperature range for 32 to 122°F (0 to 50°C)
Chlorine
Temperature resolution 0.1 up to 99.9, then 1
Temperature accuracy ± 1.8F (1°C) from 23 to 122°F ( 5 to 50°C)
± 5.4F (3°C) from 122 to 194°F (50 to 90°C)
Measurement storage 15 readings can be stored and recalled
Low battery indicator ‘BAT’ appears on the display
Power Four CR 2032 button batteries
Auto power off After 10 minutes of inactivity
CONTENTS
Total Chlorine TRACER Kit, 0-10.00ppm Range Code 1740
Includes:
TRACER TCL Tablets (100) Code 7044A-J
Tablet Crusher Code 0175
Sample Cup w/cap†
† not sold individually. See below.

5
PARTS & ACCESSORIES
Total Chlorine Replacement Electrode Code 1732
Weighted Stand w/ Sample Cups (5) Code 1746
Sample Cups w/caps (24) Code 1745
METER DESCRIPTION
Front Panel Description
1. Battery compartment cover
2. LCD Display
3. MODE/HOLD button
4. CAL/RECALL button
5. ON/OFF button
6. Electrode Retaining Collar (ring)
7. Electrode Sensor
(Note: The Electrode storage
cap is not shown)
LCD Display
1. Bargraph reading
2. Bar graph scale designations
3. Measurement reading
4. BAT (low battery) and
HOLD (data hold) indicator
5. Temperature display
6. Units of measure
10.04
78.6
500
1000
0
mv
HOLDBAT

6
BASIC OPERATION
Powering the TRACER
If the batteries are weak, the BAT indicator will appear on the display. Press the
ON/OFF key to turn the TRACER on or off. The auto power off feature will shut
the TRACER off automatically after 10 minutes of inactivity.
Electrode Recognition
When the TRACER is turned on, it will recognize the type of electrode that is
connected and will display the appropriate unit of measure.
Automatic Calibration
NOTE: The automatic calibration process calibrates internal circuitry for drift.
This does not calibrate the electrode.
The TRACER should not be immersed in a solution until after the unit is turned
on. When the TRACER is turned on, it will automatically self calibrate and the
SELF and CAL icons will be displayed. These icons will disappear after the self
calibration is complete. The main display and bar graph will then read the Total
Chlorine concentration in ppm units. The bar graph will read 0 ppm (far left),
5 ppm (center), and 10 ppm (far right). The unit of measure for the lower
temperature display will be °C or °F as selected. The readings on the display will
f ash until they have stabilized.
Changing the Displayed Temperature Units
Press and hold the CAL/RECALL button for approximately 3 seconds. The °C
or °F icon will change f rst and temperature readings will change only after the
button has been released.
Low Battery Indicator
The “BAT” indicator will be displayed when the batteries become weak. Refer to
the Maintenance Section for battery replacement information.

7
TESTING
Conditioning the Electrode
The TRACER electrode comes in a factory cleaned condition. If the meter is new
or has been in storage for an extended period of time, at least two tests should be
performed to condition the electrode. The electrode will perform best when in
continuous use. Gently wipe the electrode surface with a paper towel between uses.
Measurement
1. Fill a sample cup with exactly 20 ml of the sample water.
NOTE: Turbidity of the solution has no effect on the reading.
2. Add one TRACER TCL Tablet (7044A).
3. Use the tablet crusher (0175) to crush the tablet.
4. Cap and shake vigorously for 20-30 seconds. The tablet should be
completely disintegrated.
5. Turn the TRACER on. Wait 3 seconds for self-calibration. Immediately
immerse in the sample.
6. Stir the sample with the TRACER for 10 seconds. Stop stirring.
The sample and the electrode must remain still and stable during
the entire measurement.
7. The display will f ash while readings are changing rapidly. The result
should be read when the display stabilizes. The reading will be held and
the HOLD annunciator will come on after 120 seconds.
8. Remove the TRACER from the sample. Turn the unit off. Replace
electrode cap.
NOTE: If a series of subsequent measurements is to be carried out, brief y
rinse the electrode with water (deionized, if available) and shake off.
Gently wipe the electrode surface with a paper towel between uses.
9. The TRACER must be turned off and on again between samples.
Storing Readings
1. When the display is steady and not f ashing, press the MODE/HOLD button
to store the data. The storage location number, the stored reading and HOLD
will be displayed. Press MODE/HOLD to return to the current reading.
2. Only one reading can be stored during the 120 second measurement cycle.
3. After f fteen readings are stored, the sixteenth stored reading will over-write
the f rst stored reading.

8
Recalling Stored Readings
NOTE: The HOLD symbol should not be displayed. If it is, exit the HOLD
function by pressing the MODE button.
1. Press the CAL/RECALL button and then press the MODE/HOLD button
immediately after CAL is displayed; the location number (1 through 15)
will f ash.
2. The last stored reading taken will be displayed f rst. To advance through
the stored readings, press the MODE/HOLD button. The location number
is displayed f rst, followed by the reading stored in that location.
3. To exit the storage mode, press the CAL/RECALL button and the meter
will return to normal operation.
4. If the batteries are removed, all stored readings will be lost.
For Best Accuracy
1. Remove TRACER from sample when power is off. Even though power
is off, leaving TRACER in solution can shorten unit life.
2. Wash sample cups and caps and rinse completely before use.
3. If measuring solutions with large differences in chlorine concentration,
for example, 0.1 ppm and 5.0 ppm, use a separate sample cup for each
concentration.
4. Discard the sample cup when it becomes stained.
5. The process requires an acidic solution. The reagent tablet provides
suff cient buffering capacity to deal with alkalinity, calculated as calcium
carbonate, up to and in excess of 500 ppm. This will cover all common
water samples.
6. When the electrode is new or after dry storage, chlorine measurements
should be repeated at least twice until a repeatable reading is obtained.
7. Gently wipe the electrode surface with a paper towel between uses.
8. When measuring a lower chlorine concentration after a higher
concentration, the meter will temporarily give slightly elevated readings.
9. All oxidizing species that interfere with other chlorine methods, such as
manganese, iodine and bromine will interfere. Silver and mercuric ions
over 20 ppm will also interfere.
10. Do not touch the tablets. It can contaminate them.
11. Do not touch the sensor surface.

9
Total Chlorine Tracer Offset Adjustment Procedure
1. Obtain a sample with a known concentration of total chlorine.
2. Follow the Chlorine Measurement procedure on page 7.
3. Wait for the display to read HOLD. This may take approximately 2 minutes.
4. Press the MODE/HOLD button for approximately 5 seconds until “C_O”
appears at the bottom of the display.
5. IMMEDIATELY press the MODE/HOLD button repeatedly to increase the
value or press the CAL/RECALL button repeatedly to decrease the value
on the display until it matches the known concentration of the sample.
6. Once the value is adjusted, IMMEDIATELY press the ON/OFF button to
save the adjusted value to memory. “SA” will appear on the display.
7. Turn the meter off and proceed with the Chlorine Measurement procedure.

10
VALIDATION PROCEDURE
Perform this procedure or an appropriate calibration procedure when TRACER
is used for compliance monitoring or before the f rst use after replacing the Total
Chlorine TRACER electrode.
Required Materials and Chemicals
1 Analytical Balance, Readability 0.0005g
5 g Chloramine-T trihydrate, Analytical grade, 98%
1 Pipet, or Pipettor with disposable plastic tips, 1 mL
3 Volumetric f asks, 100 mL
2 Amber glass bottles, 100 mL
1 Sample cup (included in kit)
5 TRACER TCl Tablets (included in kit)
Deionized or distilled water
Preparation of 1ppm Standard Solution
1. Fill a 100 mL volumetric f ask approximately half full with deionized
water. Weigh and add exactly 4.050 g Chloramine-T trihydrate. Dissolve.
Dilute to the 100 mL line with deionized water. Cap and mix. This
standard is 10,000 ppm.
2. Pipet exactly 1.00 mL of the 10,000 ppm standard into another 100 mL
volumetric f ask. Dilute to the 100 mL line with deionized water. Cap and
mix. This standard is 100 ppm.
3. Pipet exactly 1.00 mL of the 100 ppm solution into a third 100 mL
volumetric f ask. Dilute to the 100 mL line with deionized water.
Cap and mix. This standard is 1 ppm.
4. Add 5 TRACER TCl Tablets (7044A) to the f ask of 1 ppm standard from
Step 3. Cap and mix until the tablets disintegrate. The tablets contain a
small amount of insoluble material and will not dissolve completely. This
standard is 1 ppm Converted Chlorine.
Procedure
1. Mix the 1 ppm Converted Chlorine standard.
2. Fill a sample cup with 20 ml of newly prepared 1 ppm Converted
Chlorine standard. Tightly cap the standard immediately after use.
3. Turn the TRACER on. Wait 3 seconds for auto-calibration (circuit’s not
electrode). Immediately immerse in the standard.
4. Stir the standard with the TRACER for 10 seconds. Stop stirring.
The standard and the TRACER must remain still and stable during
measurement.

11
5. The display will f ash while readings are changing rapidly. The result
should be read when the display stabilizes. The reading will be held and
the HOLD annunciator will come on after 120 seconds.
6. Remove the TRACER from the standard. Rinse in deionized water and
shake dry.
7. Repeat steps 2 - 6 three more times on the same sample cup of standard.
8. After the fourth time, press and hold the CAL key. While continuing to
hold the CAL key, press the MODE key. Immediately release both keys.
The main display should f ash 1.00. If 1.00 is not displayed, keep the
electrode in standard and press the CAL key again until CAL is displayed,
then press the CAL and MODE keys again simultaneously. Immediately
release both keys.
9. After approximately 5 to 7 seconds the display will brief y f ash END.
Rinse the TRACER in deionized water and shake dry.
Notes
1. The 1 ppm Converted Chlorine standard should be at room
temperature (23 ±2°C) during the validation procedure.
2. The 10,000 ppm Standard Solution can be stored for up to one year
in a tightly sealed, amber, glass bottle.
3. The 10 ppm Standard Solution can be stored for up thirty days in
a tightly sealed, amber, glass bottle.
4. The 1 ppm Converted Chlorine Standard is stable for up to
approximately 30 minutes. Discard the standard after use.

12
MAINTENANCE
Storage
When not in use, the TRACER should be stored dry with the electrode cap in place.
Cover the connector with the clear cover whenever the electrode is removed from
the meter body.
Battery Replacement
1. Twist off the battery compartment cap.
2. Hold the battery housing in place with one f nger. Remove the battery carrier
by pulling on the small tabs.
3. Replace the four CR2032 batteries. Observe polarity.
4. Replace the battery compartment cap.
Cleaning the Electrode
The TRACER Chlorine Electrode arrives in a factory-cleaned condition and is
ready to be used. The electrode will perform better and yield more stable readings
after the f rst few tests. Firmly wipe the electrode surface with a clean, dry paper
towel before and after use to remove any compounds that may have formed.
Rinse the electrode in deionized water to clean it. When not in use, the TRACER
should be stored with the electrode cap in place.

13
Replacing the Electrode
The TRACER is shipped with an electrode attached. If the electrode needs to be
replaced or changed, follow these steps.
1. Press the ON/OFF button to turn the meter off.
2. To remove an electrode, unscrew and completely remove the electrode
collar. Turn the collar counter-clockwise.
3. Gently rock the electrode from side to side, pulling it downwards, until it
disconnects from the meter.
4. To attach an electrode, align the slots and carefully plug the electrode into
the meter socket. CAUTION: Take care to align pins carefully. Bent or
broken pins will cause the meter to malfunction.
5. Firmly tighten the electrode collar to create a seal with the rubber gasket
between the electrode and the meter. Do not over tighten.
6. Cover the connector end of the removed electrode with the clear plastic cap.
TROUBLESHOOTING
Problem Check Action
Power on but no display Batteries Insert batteries
Verify correct polarity
Replace
Unstable reading Electrode Immerse probe more deeply
in sample
Remove air bubbles caught
under electrode
Clean electrode
Replace electrode
Slow response Electrode Clean electrode
Unexpected low results Tablet Conf rm tablet has been added
Unexpected high results Tablet Dissolve tablet completely
Display frozen HOLD function Press MODE/HOLD or turn
meter off.Restart.
Button press Remove batteries (stored data
will be lost)

14
0
EXPANDING YOUR TRACER
Interchangeable electrodes are available to convert the Total Chlorine TRACER
to a pH TRACER or an ORP TRACER.
Remember to ask for instructions and appropriate reagent or buffer tablets when
ordering pH or ORP electrodes.
pH TRACER Electrode, 0.00-14.00 pH Code 1733
The pH TRACER Electrode is used with pH 4.0, 7.0
and 10.0 buffers. Order using the following codes:
pH 4.0 Mini Buffer Tablets (100) Code 3983A-J
pH 7.0 Mini Buffer Tablets (100) Code 3984A-J
pH 10.0 Mini Buffer Tablets (100) Code 3985A-J
ORP TRACER Electrode,±999 mV Code 1734
The ORP TRACER Electrode (code1734) requires
an initial soaking in a pH 4.0 buffer solution. Order
pH 4.0 Mini Buffer Tablets/100 pack (Code 3893A-J).
WARRANTY
The TRACER PocketTester is specif cally calibrated for use with the TRACER
TC1 Tablets (Code 7044A). Use with other reagent systems will void the warranty
and may damage the meter.
LaMotte Company warrants this instrument to be free of defects in parts and
workmanship for 1 year from the date of shipment and the probe to be free of
defects in parts and workmanship for 6 months 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
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 specif cation, improper maintenance or repair, or unauthorized
modif cation. LaMotte Company specif cally disclaims any implied warranties
or merchantability or f tness for a speci f 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.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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