pocket colorimeter™ ii analysis systems

5957088.book Page 1 Friday, March 22, 2013 3:54 PM
59570-88
POCKET COLORIMETER™ II
ANALYSIS SYSTEMS
INSTRUCTION MANUAL
Chlorine (Cl2)
© Hach Company, 2006–2009, 2013. All rights reserved. Printed in the U.S.A.te/jk/dk 03/13 6ed
5957088.book Page 2 Friday, March 22, 2013 3:54 PM
Important Note
This manual is intended for use with the following Pocket Colorimeter™ II
instrument:
Chlorine (Cl2)
Cat. No. 59530-00
Note: This product has not been evaluated to test for chlorine and
chloramines in medical applications in the United States.
1—2
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Table of Contents
Safety Precautions ............................................................................... 1—7
Laboratory Safety................................................................................ 1—7
Use of Hazard Information .................................................................. 1—8
Precautionary Labels .......................................................................... 1—9
Specifications ...................................................................................... 1—11
Instrument Keys and Display .......................................................... 1—15
Instrument Cap Cord ......................................................................... 1—16
Chlorine, Free and Total, LR ............................................................ 1—19
Measuring Hints ................................................................................ 1—19
Accuracy Check ................................................................................ 1—32
Interferences ..................................................................................... 1—34
Method Performance ........................................................................ 1—36
Chlorine, Free and Total, HR ............................................................ 1—37
Measuring Hints ................................................................................ 1—37
Accuracy Check ................................................................................ 1—45
Interferences ..................................................................................... 1—47
Method Performance ........................................................................ 1—49
1—3
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Table of Contents, continued
Spec√™ Secondary Standards for DPD Chlorine ...................... 1—51
Using the Spec√ Standards.............................................................. 1—52
Summary of Method .......................................................................... 1—53
Replacement Parts............................................................................. 1—54
Instrument Operation .......................................................................... 2—3
Key Functions..................................................................................... 2—3
Menu Selections ................................................................................. 2—4
Switching Ranges............................................................................... 2—4
Setting the Time ................................................................................. 2—4
Recalling Stored Measurements ........................................................ 2—5
Battery Installation .............................................................................. 2—6
Error Codes ........................................................................................... 2—9
Error Messages .................................................................................. 2—9
Standard Calibration Adjust ............................................................ 2—13
1—4
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Table of Contents, continued
User-Entered Calibration .................................................................. 2—15
Overview ........................................................................................... 2—15
Calibration Procedure Using Prepared Standards ............................ 2—17
Entering a Predetermined Calibration Curve .................................... 2—20
Editing a User-entered or Factory Calibration Curve ........................ 2—22
Exiting the Calibration Routine.......................................................... 2—25
Deleting Calibration Points................................................................ 2—25
Retrieving the Factory Calibration..................................................... 2—26
Maximum/Minimum Displayed Value ................................................ 2—27
Certification ......................................................................................... 2—29
How to Order ....................................................................................... 2—35
Repair Service ..................................................................................... 2—37
Warranty................................................................................................ 2—38
1—5
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1—6
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Safety Precautions
Please read this entire manual before unpacking, setting up or operating this
equipment. Pay attention to all danger and caution statements. Failure to do
so could result in serious injury to the operator or damage to the equipment.
Make sure that the protection provided by this equipment is not impaired, do
not use or install this equipment in any manner other than that specified in
this manual.
In no event will the manufacturer be liable for direct, indirect, special,
incidental or consequential damages resulting from any defect or omission in
this manual. The manufacturer reserves the right to make changes in this
manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer’s website.
Laboratory Safety
As part of good laboratory practice, please familiarize yourself with the
reagents used in these procedures. Read all product labels and the material
safety data sheets (MSDS) before using them. It is always good practice to
1—7
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Safety Precautions, continued
wear safety glasses when handling chemicals. Follow instructions carefully.
Rinse thoroughly if contact occurs. If you have questions about reagents or
procedures, please contact the manufacturer or distributor.
Use of Hazard Information
WA R N I N G
Indicates a potentially or imminently hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate
injury.
NOTICE
Indicates a situation which, if not avoided, may cause damage to the instrument.
Information that requires special emphasis.
1—8
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Safety Precautions, continued
Precautionary Labels
Read all labels and tags attached to the instrument. Personal injury or damage
to the instrument could occur if not observed. A symbol on the instrument is
referenced in the manual with a precautionary statement.
This is the safety alert symbol. Obey all safety messages that follow this
symbol to avoid potential injury. If on the instrument, refer to the instruction
manual for operation or safety information.
Electrical equipment marked with this symbol may not be disposed of in
European public disposal systems after 12 August of 2005. In conformity
with European local and national regulations (EU Directive 2002/96/EC),
European electrical equipment users must now return old or end-of life
equipment to the Producer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment producer or
supplier for instructions on how to return end-of-life equipment, producersupplied electrical accessories, and all auxiliary items for proper disposal.
1—9
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Safety Precautions, continued
1—10
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Specifications
Lamp: Light emitting diode (LED)
Detector: Silicon photodiode
Photometric precision: ± 0.0015 Abs
Filter bandwidth: 15 nm
Wavelength: 528 nm
Absorbance range: 0–2.5 Abs
Dimensions: 3.2 x 6.1 x 15.2 cm (1.25 x 2.4 x 6 inches)
Weight: 0.2 kg (0.43 lbs)
Sample cells: 1 cm (10 mL), 25 mm (10 mL)
Operating conditions: 0 to 50 °C (32 to 122 °F); 0 to 90% relative humidity
(noncondensing)
Power supply: Four AAA alkaline batteries; approximate life is 2000 tests*
* Backlight usage will decrease battery life.
1—11
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1—12
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OPERATION
DANGER
Handling chemical samples, standards, and reagents can be dangerous. Review the necessary
Material Safety Data Sheets and become familiar with all safety procedures before handling
any chemicals.
DANGER
La manipulation des échantillons chimiques, étalons et réactifs peut être dangereuse. Lire les
Fiches de Données de Sécurité des Produits (FDSP) et se familiariser avec toutes
les procédures de sécurité avant de manipuler tous les produits chimiques.
PELIGRO
La manipulación de muestras químicas, estándares y reactivos puede ser peligrosa. Revise las
fichas de seguridad de materiales y familiarícese con los procedimientos de seguridad antes de
manipular productos químicos.
GEFAHR
Das Arbeiten mit chemischen Proben, Standards und Reagenzien ist mit Gefahren verbunden.
Es wird dem Benutzer dieser Produkte empfohlen, sich vor der Arbeit mit sicheren
Verfahrensweisen und dem richtigen Gebrauch der Chemikalien vertraut zu machen und alle
entsprechenden Materialsicherheitsdatenblätter aufmerksam zu lesen.
PERIGO
A manipulação de amostras, padrões e reagentes químicos pode ser perigosa. Reveja a
folha dos dados de segurança do material e familiarize-se com todos os procedimentos de
segurança antes de manipular quaisquer produtos químicos.
PERICOLO
La manipolazione di campioni, standard e reattivi chimici può essere pericolosa. La preghiamo di
prendere conoscenza delle Schede Techniche necessarie legate alla Sicurezza dei Materiali e di
abituarsi con tutte le procedure di sicurezza prima di manipolare ogni prodotto chimico.
1—13
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1—14
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Instrument Keys and Display
Ite
m
Description
1
POWER/BACKLIGHT
2
ZERO/SCROLL
3
MENU
4
Numeric Display
5
Range Indicator
6
Range Indicator
7
Menu Indicator
8
Calibration Adjusted Indicator
9
Battery Low Indicator
10
1—15
Key
Key
Key
READ/ENTER
Key
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Instrument Cap Cord
The instrument cap for the Pocket Colorimeter™ II doubles as a light shield.
Accurate measurements cannot be obtained unless the sample or blank is
covered with the cap. Use the instrument cap cord to secure the cap to the
body of the colorimeter and prevent loss of the cap. See Figure 1 on page 1—
17.
1. Loop the instrument cap cord through the ring on the cap.
2. Remove the battery compartment cover. Press the knotted end of the cord
into the hole indicated by the arrow.
3. Slide the cord into the slot on the battery compartment cover. Snap the
cover into place.
1—16
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Instrument Cap Cord, continued
Figure 1
Attaching the Instrument Cap Cord
1—17
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1—18
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Chlorine, Free and Total, LR
(0.02 to 2.00 mg/L Cl2)
Method 8021 (Free): For water, treated water, estuary water, and sea water
Method 8167 (Total): For water, treated water, wastewater, estuary water, and
sea water
Note: This product has not been evaluated to test for chlorine and
chloramines in medical applications in the United States.
DPD Method*
USEPA accepted for reporting drinking water analyses** (free and total
chlorine) and wastewater analyses** (total chlorine only)
Measuring Hints
•
•
Analyze samples immediately. Do not use plastic containers to collect
samples.
For best results, dedicate a set of cells to each free chlorine and total
chlorine test.
* Adapted from Standard Methods for the Examination of Water and Wastewater.
** Procedure is equivalent to USEPA method 330.5 for wastewater and Standard
Method 4500-Cl G for drinking water.
1—19
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Chlorine, Free and Total, LR, continued
•
Cold waters can cause condensation on the sample cells during color
development. Examine the sample cells for condensation before reading.
Note: The Pocket Colorimeter II is designed to measure solutions contained
in sample cells. DO NOT dip the meter in the sample or pour the sample
directly into the cell holder.
1—20
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Chlorine, Free and Total, LR, continued
Using Powder Pillows (USEPA accepted for reporting)
1. Fill a 10-mL cell with
sample (the blank). Cap.
Note: Samples must be
analyzed immediately and
cannot be preserved for
later analysis.
2. Press the POWER key
to turn the meter on.
The arrow should indicate
the low range channel
(LR).
Note: See page 2—4 for
information on selecting
the correct range channel.
3. Remove the meter cap.
Place the blank in the cell
holder with the diamond
mark facing the keypad.
Fit the meter cap over the
cell compartment to cover
the cell.
Note: Wipe excess liquid
and finger prints off sample
cells.
1—21
5957088.book Page 22 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
4. Press ZERO/SCROLL.
The display will show
“- - - -” then “0.00”.
Remove the blank from
the cell holder.
5. Fill a second 10-mL cell
to the 10-mL line with
sample.
Note: Do not use the same
sample cells for free and
total chlorine analysis
without thoroughly rinsing
the cells with sample
between free and total
tests.
1—22
6. Add the contents of one
DPD Free Chlorine Powder
Pillow or one DPD Total
Chlorine Powder Pillow to
the sample cell (the
prepared sample).
Note: SwifTest™
Dispensers for Free or
Total Chlorine can be used
in place of powder pillows.
See Using the SwifTest™
Dispenser (USEPA
accepted for reporting) on
page 1—28.
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Chlorine, Free and Total, LR, continued
7. Cap and shake gently
for 20 seconds.
Note: Shaking dissipates
bubbles that may form in
samples with dissolved
gases.
Note: A pink color will
develop if chlorine is
present.
8. For free chlorine, wipe
excess liquid and
fingerprints from the
sample cell. Put the
prepared sample cell in the
cell holder, then cover the
cell with the instrument cap.
Proceed to step 10 within
one minute after adding the
DPD Free Pillow.
Note: Accuracy is not
affected by undissolved
powder.
1—23
9. For total chlorine, wait
3 to 6 minutes after adding
the DPD Total Pillow. After
the reaction time, wipe
excess liquid and
fingerprints from the
sample cell. Put the
prepared sample in the cell
holder and cover the cell
with the instrument cap.
Proceed to step 10.
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Chlorine, Free and Total, LR, continued
10. Press READ/ENTER.
The instrument will show
“- - - -” followed by the
results in mg/L chlorine.
Note: If the sample temporarily turns yellow after reagent
addition, or if the display shows overrange (page 2—12)
dilute a fresh sample and repeat the test. A slight loss of
chlorine may occur because of the dilution. Multiply the
result by the appropriate dilution factor.
1—24
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Chlorine, Free and Total, LR, continued
Using AccuVac® Ampules (USEPA accepted for reporting)
1. Fill a 10-mL sample
cell with sample (the
blank). Cap. Collect at
least 40 mL of sample in a
50-mL beaker.
Note: Empty AccuVac
Ampules are available for
use as blanks. See
OPTIONAL REAGENTS
on page 1—55.
2. Press the POWER key
to turn on the meter.
The arrow in the display
should indicate the low
range channel (LR).
See page 2—4 for
information on selecting
the correct range channel.
1—25
3. Remove the instrument
cap. Place the blank in the
cell holder, with the
diamond mark facing the
keypad. Cover the cell with
the instrument cap.
Note: Wipe liquid and
finger prints off sample
cells.
5957088.book Page 26 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
4. Press ZERO/SCROLL.
The display will show
“- - - -” then “0.00”.
Remove the blank.
5. Fill a DPD Free Chlorine
Reagent AccuVac®
Ampule or a DPD Total
Chlorine Reagent AccuVac
Ampule with sample.
Note: Keep the tip
immersed until the ampule
fills completely.
1—26
6. Quickly invert the
ampule several times to
mix.
Note: A pink color will form
if chlorine is present.
Note: Accuracy is not
affected by undissolved
powder.
5957088.book Page 27 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
7. For free chlorine, wipe
8. For total chlorine, wait
9. Press READ/ENTER.
The instrument will show
excess liquid and
3 to 6 minutes after filling
- - - - followed by the results
fingerprints from the
the AccuVac Ampule. After
in mg/L chlorine.
AccuVac Ampule. Put the
the reaction time, wipe
ampule in the cell holder,
excess liquid and
then cover with the
fingerprints from the
instrument cap. Proceed to
ampule. Put the ampule in
step 9 within one minute
the cell holder, then cover
after filling the AccuVac
with the instrument cap.
Ampule.
Proceed to step 9.
Note: If the sample temporarily turns yellow after reagent addition, or if the display shows
overrange (page 2—12) dilute a fresh sample and repeat the test. A slight loss of chlorine
may occur because of the dilution. Multiply the result by the appropriate dilution factor.
1—27
5957088.book Page 28 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
Using the SwifTest™ Dispenser (USEPA accepted for reporting)
1. Fill a 10-mL cell with
sample (the blank). Cap.
Note: Samples must be
analyzed immediately and
cannot be preserved for
later analysis.
2. Press the POWER key
to turn the meter on.
The arrow should indicate
the low range channel
(LR).
Note: See page 2—4 for
information on selecting
the correct range channel.
3. Remove the meter cap.
Place the blank in the cell
holder with the diamond
mark facing the keypad.
Fit the meter cap over the
cell compartment to cover
the cell.
Note: Wipe excess liquid
and finger prints off sample
cells.
1—28
5957088.book Page 29 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
4. Press ZERO/SCROLL.
The display will show
“- - - -” then “0.00”.
Remove the blank from
the cell holder.
5. Fill a second 10-mL cell
to the 10-mL line with
sample.
Note: Do not use the same
sample cells for free and
total chlorine analysis
without thoroughly rinsing
the cells with sample
between free and total
tests.
1—29
6. Use the SwifTest™
Dispenser to add one
dispensation of DPD Free
Chlorine reagent or one
dispensation of DPD Total
Chlorine reagent to the
sample cell (the prepared
sample).
5957088.book Page 30 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
7. Cap and shake gently
for 20 seconds.
Note: Shaking dissipates
bubbles that may form in
samples with dissolved
gases.
Note: A pink color will
develop if chlorine is
present.
8. For free chlorine, wipe
excess liquid and
fingerprints from the
sample cell. Put the
prepared sample cell in the
cell holder and cover with
the instrument cap.
Proceed to step 10 within
one minute after adding the
DPD Free reagent.
Note: Accuracy is not
affected by undissolved
powder.
1—30
9. For total chlorine, wait
3 to 6 minutes after adding
the DPD Total reagent.
After the reaction time, wipe
excess liquid and
fingerprints from the
sample cell. Put the
prepared sample in the cell
holder and cover the cell
with the instrument cap.
Proceed to step 10.
5957088.book Page 31 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
10. Press READ/ENTER.
The instrument will show - - - followed by the results in
mg/L chlorine.
Note: If the sample temporarily turns yellow after reagent
addition, or if the display shows overrange (page 2—12)
dilute a fresh sample and repeat the test. A slight loss of
chlorine may occur because of the dilution. Multiply the
result by the appropriate dilution factor.
1—31
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Chlorine, Free and Total, LR, continued
Accuracy Check
Standard Additions Method
1. Use the ampule breaker to snap the neck off a low range Chlorine
Standard Solution Ampule, 20–30 mg/L Cl2.
2. Use a TenSette® pipet to add 0.1, 0.2, and 0.3 mL of standard to three
10-mL samples. Swirl gently to mix. (For AccuVac Ampules, use 0.2, 0.4,
and 0.6 mL of standard and a 25-mL sample in a 50-mL beaker.)
3. Analyze a 10-mL aliquot of each sample as described in the procedure.
Each 0.1 mL of standard will cause an incremental increase in chlorine.
The exact value depends on the concentration of the ampule standard.
Check the certificate enclosed with the ampules for the chlorine
concentration and calculation of the expected chlorine increase.
Standard Solution Method
Standard solutions for chlorine are difficult and time-consuming to prepare.
Errors can occur if attention to detail is not addressed during preparation of the
standards. The calibration curve is prepared under rigorous analytical
laboratory conditions. Use the factory calibration for most normal testing.
1—32
5957088.book Page 33 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
A user calibration or a user-prepared chlorine standard may be required by a
regulatory official or agency. Two options are available on the
Pocket Colorimeter II to meet this requirement.
A chlorine standard may be prepared and used to validate the calibration curve
using the Standard Calibration Adjust feature (see page 2—13 for more
information). The concentration of the prepared standard must be determined
with an alternate instrument such as a spectrophotometer, colorimeter, or by
using an alternate method such as amperometric titration. The concentration of
the chlorine standard for the LR procedure must be between 0.50 and 1.50
mg/L chlorine.
In addition, a user-generated calibration curve can be programmed into the
Pocket Colorimeter™ II. See User-Entered Calibration on page 2—15 for
more information.
1—33
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Chlorine, Free and Total, LR, continued
Interferences
Interfering
Substance
Interference Levels and Treatments
Acidity
Greater than 150 mg/L CaCO3. May not develop full
color or color may fade instantly. Neutralize to pH 6–7
with 1 N Sodium Hydroxide. Determine amount to be
added on a separate 10-mL sample, then add the same
amount to the sample being tested. Correct for the
additional volume.
Alkalinity
Greater than 250 mg/L CaCO3. May not develop full
color or color may fade instantly. Neutralize to pH 6–7
with 1 N Sulfuric Acid. Determine amount to be added
on a separate 10-mL sample, then add the same
amount to the sample being tested. Correct for the
additional volume.
Bromine, Br2
Interferes at all levels
1—34
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Chlorine, Free and Total, LR, continued
Interfering
Substance
Interference Levels and Treatments
Hardness
No effect at less than 1,000 mg/L as CaCO3
Iodine, I2
Interferes at all levels
Manganese,
Oxidized
(Mn4+, Mn7+) or
Chromium,
Oxidized (Cr6+)
1. Adjust sample pH to 6–7.
2. Add 3 drops Potassium Iodide (30-g/L) (Cat. No.
343-32) to a 10-mL sample.
3. Mix and wait one minute.
4. Add 3 drops Sodium Arsenite (5-g/L) (Cat. No.
1047-32) and mix.
5. Analyze 10 mL of the treated sample as described in
the procedure.
6. Subtract the result from this test from the original
analysis to obtain the correct chlorine concentration.
1—35
5957088.book Page 36 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, LR, continued
Interfering
Substance
Interference Levels and Treatments
Monochloramine, Causes a gradual drift to higher readings. When read
LR method
within 1 minute after reagent addition, 3 mg/L
monochloramine causes less than a 0.1 mg/L increase
in the reading.
Ozone
Interferes at all levels.
Method Performance
Estimated Detection Limit (EDL) = 0.02 mg/L
Typical precision (95% confidence interval) = 1.00 ± 0.05 mg/L
1—36
5957088.book Page 37 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR (0.1 to 8.0 mg/L Cl2)
For water, treated water, estuary water, and seawater (Free Chlorine)
For water, treated waters, wastewater, estuary water, and seawater
(Total Chlorine)
Note: This product has not been evaluated to test for chlorine and
chloramines in medical applications in the United States.
DPD Method*
USEPA accepted for reporting drinking water analyses (free and total
chlorine) and wastewater analyses (total chlorine).
Measuring Hints
•
•
If the chlorine concentration is typically less than 2 mg/L, use the low range
procedure.
Analyze samples immediately. Do not use plastic containers to collect
samples. For best results, dedicate a set of sample cells to each test (free
and total).
* Adapted from Standard Methods for the Examination of Water and
Wastewater.
1—37
5957088.book Page 38 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
•
•
•
If the sample temporarily turns yellow after reagent addition or shows
overrange (page 2—12), dilute a fresh sample and repeat the test. A slight
loss of chlorine may occur. Multiply the result by the dilution factor.
High range free chlorine determinations are subject to variable levels of
interferences from monochloramine. See Interferences on page 1—47.
Cold waters can cause condensation on the sample cells during color
development. Examine the sample cells for condensation before reading.
Note: The Pocket Colorimeter II is designed to measure solutions contained
in sample cells. DO NOT dip the meter in the sample or pour the sample
directly into the cell holder.
1—38
5957088.book Page 39 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
Using Powder Pillows
1. Fill a 1-cm/10-mL cell
with sample (the blank).
Cap.
Note: Samples must be
analyzed immediately and
cannot be preserved for later
analysis.
2. Press the POWER key to
turn the meter on.
The arrow should indicate
the high range channel
(HR).
Note: See page 2—4 for
information on selecting the
correct range channel.
1—39
3. Remove the meter cap.
Place the blank into the
cell holder, with the
diamond mark facing the
back of the cell holder.
Cover the cell with the cap.
Note: Wipe liquid off
sample cells.
5957088.book Page 40 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
4. Press: ZERO/SCROLL
The display will show
“- - - -” followed by “0.0”.
Remove the blank.
5. Fill another 1-cm/10-mL
sample cell to the 5-mL line
with sample. Cap.
Note: Do not use the same
sample cells for free and
total chlorine without
thoroughly rinsing the cells
between the free and total
tests.
1—40
6. Add the contents of two
DPD Free Chlorine or two
DPD Total Chlorine Powder
Pillows to the sample cell
(the prepared sample).
Cap the cell and shake
gently for 20 seconds.
Note: Gentle shaking
dissipates bubbles which
may form in samples
containing dissolved gases.
5957088.book Page 41 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
7. For free chlorine, wipe
excess liquid and fingerprints
from the sample cell. Put the
prepared sample cell in the
cell holder, then cover the
cell with the instrument cap.
Proceed to step 9 within one
minute after adding the DPD
Free Pillows.
Note: The SwifTest™
Dispenser can be used in
place of the powder pillows
(see page 1—42).
8. For total chlorine, wait
3 to 6 minutes after adding
the DPD Total Pillows. After
the reaction time, wipe
excess liquid and fingerprints
from the sample cell. Put the
prepared sample in the cell
holder and cover the cell with
the instrument cap. Proceed
to step 9.
1—41
9. Press READ/ENTER.
The instrument will
show “- - - -” followed by
the results in mg/L chlorine
(Cl2).
5957088.book Page 42 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
Using the SwifTest™ Dispenser
1. Fill a 1-cm/10-mL cell
with sample (the blank).
Cap.
Note: Samples must be
analyzed immediately and
cannot be preserved for later
analysis.
2. Press the POWER key to
turn the meter on.
The arrow should indicate
the high range channel
(HR).
Note: See page 2—4 for
information on selecting the
correct range channel.
1—42
3. Remove the meter cap.
Place the blank into the cell
holder, with the diamond
mark facing the back of the
cell holder. Cover the cell
with the cap.
Note: Wipe liquid off sample
cells.
5957088.book Page 43 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
4. Press: ZERO/SCROLL
The display will show
“- - - -” followed by “0.0”.
Remove the blank.
5. Fill another 1-cm/10-mL
sample cell to the 5-mL line
with sample. Cap.
Note: Do not use the same
sample cells for free and
total chlorine without
thoroughly rinsing the cells
between the free and total
tests.
1—43
6. Use the SwifTest™
Dispenser to add two
dispensations of DPD Free
Chlorine reagent or DPD
Total Chlorine reagent to
the sample cell
(the prepared sample).
Cap the cell and shake
gently for 20 seconds.
Note: Gentle shaking
dissipates bubbles.
5957088.book Page 44 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
7. For free chlorine, wipe
excess liquid and fingerprints
from the sample cell. Put the
prepared sample cell in the
cell holder, then cover the
cell with the instrument cap.
Proceed to step 9 within one
minute after adding the DPD
Free reagent.
8. For total chlorine, wait
3 to 6 minutes after adding
the DPD Total reagent. After
the reaction time, wipe
excess liquid and fingerprints
from the sample cell. Put the
prepared sample in the cell
holder and cover the cell with
the instrument cap. Proceed
to step 9.
1—44
9. Press READ/ENTER.
The instrument will show
“- - - -” followed by the
results in mg/L chlorine
(Cl2).
5957088.book Page 45 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
Accuracy Check
Standard Additions Method
a. Use the ampule breaker to snap the neck off a high range Chlorine
Standard Solution Ampule, 50–70 mg/L Cl2.
b. Use a TenSette® pipet to add 0.1, 0.2, and 0.3 mL of standard to three
5-mL samples. Swirl gently to mix.
c. Analyze each sample as described in the procedure. Each 0.1 mL of
standard will cause an incremental increase in chlorine. The exact
value depends on the concentration of the ampule standard. Check the
certificate enclosed with the ampules for calculation of the expected
increase in the chlorine concentration.
Standard Solution Method
Standard solutions for chlorine are difficult and time-consuming to prepare.
Errors can occur if attention to detail is not addressed during preparation of the
standards. The calibration curve is prepared under rigorous analytical
laboratory conditions. Use the factory calibration for most normal testing.
1—45
5957088.book Page 46 Friday, March 22, 2013 3:54 PM
Chlorine, Free and Total, HR, continued
A user calibration or a user-prepared chlorine standard may be required by a
regulatory official or agency. Two options are available on the
Pocket Colorimeter™ II to meet this requirement.
A chlorine standard may be prepared and used to validate the calibration curve
using the Standard Calibration Adjust feature (see page 2—13 for more
information). The concentration of the prepared standard must be determined
with an alternate instrument such as a spectrophotometer, colorimeter, or by
using an alternate method such as amperometric titration. The concentration of
the chlorine standard for the HR procedure must be between 4.5 and 7.0 mg/L
chlorine.
In addition, a user-generated calibration curve can be programmed into the
Pocket Colorimeter™ II. See User-Entered Calibration on page 2—15 for
more information.
1—46
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Chlorine, Free and Total, HR, continued
Interferences
Interfering Substance Interference Levels and Treatments
Monochloramine
For conventional free chlorine disinfection (beyond
the breakpoint), monochloramine concentrations are
very low. If monochloramine is present in the
sample, its interference in the free chlorine test
varies with the temperature, the relative amount of
monochloramine to free ammonia, and the time
required to do the analysis. Approximate
interference levels of monochloramine in the free
chlorine test are listed below (as mg/L Cl2).
NH2Cl
Sample Temperature °C (°F)
(as Cl2)
1.2
2.5
3.5
5 (40)
0.2
0.4
0.5
1—47
10 (50)
0.2
0.5
0.6
20 (68)
0.3
0.6
0.7
30 (83)
0.3
0.6
0.8
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Chlorine, Free and Total, HR, continued
See additional Interferences on page 1—34.
1—48
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Chlorine, Free and Total, HR, continued
Method Performance
Estimated Detection Limit (EDL) = 0.1 mg/L
Typical precision (95% confidence interval) = 5.0 ± 0.2 mg/L
1—49
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Chlorine, Free and Total, HR, continued
1—50
5957088.book Page 51 Friday, March 22, 2013 3:54 PM
Specê Secondary Standards for DPD
Chlorine
Note: Due to improvements in the optical system of the Pocket Colorimeter™ II, the
tolerance ranges and values on the Certificate of Analysis of previously
purchased Spec√ standards may no longer be valid. Obtain a new set of
standards, or use the Pocket Colorimeter II to assign new values to existing
standards.
The DPD Chlorine Spec√ Secondary Standards are available to quickly check
the repeatability of the Pocket Colorimeter™ II instrument (see OPTIONAL
REAGENTS on page 1—55).
After initial measurements for the Spec√ standards are collected in the low
range (LR) channel, the standards can be re-checked as often as desired to
ensure the instrument is working consistently.
The standards do not ensure reagent quality nor do they ensure the accuracy
of the test results. Analysis of real standard solutions using the kit reagents is
required to verify the accuracy of the entire Pocket Colorimeter system. The
Spec√ Standards should NEVER be used to calibrate the instrument. The
certificate of analysis lists the expected value and tolerance for each Spec√
Standard.
1—51
5957088.book Page 52 Friday, March 22, 2013 3:54 PM
Specê Secondary Standards for DPD Chlorine, continued
Note: Before proceeding, make sure the instrument is in the low (LR) range channel.
See Switching Ranges on page 2—4.
Using the Spec√ Standards
1. Place the colorless Spec√ blank into the cell holder with the alignment
mark facing the keypad. Tightly cover the cell with the instrument cap.
2. Press ZERO. The display will show “0.00”.
3. Place the STD 1 cell into the cell holder. Tightly cover the cell with the
instrument cap.
4. Press READ/ENTER. Record the concentration measurement.
5. Repeat steps 3 and 4 with cells labeled STD 2 and STD 3.
6. Compare these measurements with previous measurements to verify the
instrument is performing consistently. (If these are the first measurements,
record them for comparison with later measurements.)
Note: If the instrument is user-calibrated, initial standard measurements of the Spec√
Standards will need to be performed again for the user calibration.
1—52
5957088.book Page 53 Friday, March 22, 2013 3:54 PM
Summary of Method
Chlorine can be present in water as free chlorine and as combined chlorine.
Both forms can coexist in the same solution and can be determined together as
total chlorine. Free chlorine is present as hypochlorous acid or hypochlorite
ion. Combined chlorine represents a combination of chlorine-containing
compounds including but not limited to monochloramine, dichloramine,
nitrogen trichloride, and other chloro derivatives. The combined chlorine
oxidizes triiodide ion (I3–) to iodine (I2). The iodine and free chlorine reacts with
DPD (N,N-diethyl-p-phenylenediamine) to form a red solution. The color
intensity is proportional to the total chlorine concentration. To determine the
concentration of combined chlorine, run a free chlorine test and a total chlorine
test. Subtract the results of the free chlorine test from the total chlorine test to
obtain the combined chlorine concentration.
The range of analysis using the DPD method for chlorine can be extended by
adding more indicator in proportion to sample volume. For example, two
powder pillows of DPD Chlorine Reagent are added to a 5-mL sample portion
to extend the range of analysis.
1—53
5957088.book Page 54 Friday, March 22, 2013 3:54 PM
Replacement Parts
REQUIRED REAGENTS
Description
Unit
Cat. No.
Free Chlorine Tests
DPD Free Chlorine Reagent Powder Pillows....................100/pkg ... 21055-69
or
DPD Free Chlorine Reagent AccuVac® Ampules
(low range test only) ........................................................25/pkg ... 25020-25
SwifTest™ DPD Free Chlorine Reagent with dispenser 250* tests ... 28023-00
Total Chlorine Tests
DPD Total Chlorine Reagent Powder Pillows....................100/pkg ... 21056-69
or
DPD Total Chlorine Reagent AccuVac® Ampules
(low range test only) ........................................................25/pkg ... 25030-25
SwifTest™ DPD Total Chlorine Reagent with dispenser 250* tests ... 28024-00
REQUIRED APPARATUS (AccuVac® Ampules)
Beaker, 50 mL........................................................................each .... 500-41H
* 125 tests when performing the high range test
1—54
5957088.book Page 55 Friday, March 22, 2013 3:54 PM
Replacement Parts, continued
OPTIONAL REAGENTS
Description
Unit
Cat. No.
Chlorine Standard Solution, 25–30 mg/L, 2-mL.................. 20/pkg ... 26300-20
Chlorine Standard Solution, 50–75 mg/L, 2-mL.................. 20/pkg ... 14268-20
Chlorine Standards, secondary, Specê,
0.0, 0.2, 0.8 and 1.5 mg/L ................................................. 4/pkg ... 26353-00
Empty AccuVac® Ampules (for reading blanks)................. 25/pkg ... 26779-25
Potassium Iodide Solution, 30 g/L ...........................100 mL MDB* ....... 343-32
Spec√ Secondary Standards, Chlorine.................................. each ... 26353-00
Sodium Arsenite Solution, 5 g/L ............................... 100 mL MDB ..... 1047-32
Sodium Hydroxide Standard Solution, 1 N ............... 100 mL MDB ..... 1045-32
Sulfuric Acid Standard Solution, 1 N......................... 100 mL MDB ..... 1270-32
SwifTest™ DPD Free Reagent Replacement Vial........250** tests ... 21055-60
SwifTest™ DPD Total Reagent Replacement Vial........250** tests ... 21056-60
Water, deionized ....................................................................... 4 L ....... 272-56
* Marked Dropper Bottle
** 125 tests when performing the high range test
1—55
5957088.book Page 56 Friday, March 22, 2013 3:54 PM
Replacement Parts, continued
OPTIONAL APPARATUS
Description
Unit
Cat. No.
AccuVac® Snapper Kit ...........................................................each ... 24052-00
Ampule Breaker Kit ................................................................each ... 24846-00
Batteries, AAA, alkaline ........................................................4/pkg ... 46743-00
Caps for 10-mL sample cells ..............................................12/pkg ... 24018-12
Cylinder, graduated, 25 mL. glass .........................................each ....... 508-40
Cylinder, graduated, 100 mL, glass .......................................each ....... 508-42
sension™1 Basic Portable pH Meter, with electrode............each ... 51700-10
Pipet, TenSette®, 0.1 to 1.0 mL..............................................each ... 19700-01
Pipet Tips, For 19700-01 TenSette® Pipet ..........................50/pkg ... 21856-96
Sample Cells, 10-mL with screw caps ..................................6/pkg ... 24276-06
REPLACEMENT PARTS
Cap for 1-cm/10 mL sample cell ............................................each ... 52626-00
Instrument Cap/light shield ....................................................each ... 59548-00
Instrument Manual .................................................................each ... 59570-88
Sample Cells, 1-cm/10-mL....................................................2/pkg ... 48643-02
1—56
5957088.book Page 1 Friday, March 22, 2013 3:54 PM
Section 2
Instrument Manual
2—1
5957088.book Page 2 Friday, March 22, 2013 3:54 PM
2—2
5957088.book Page 3 Friday, March 22, 2013 3:54 PM
Instrument Operation
Key Functions
Key
Description Function
POWER
On/Off/Backlight
To turn on the backlight, turn on the instrument, then
press and hold the power key until the backlight
turns on. Press and hold again to turn off the
backlight. This key functions the same in all
instrument modes and ranges.
ZERO/SCROLL
In measurement mode, sets the instrument to zero.
In menu mode, scrolls through menu options. Also
scrolls numbers when entering or editing a value.
READ/ENTER
In measurement mode, initiates sample
measurement.
In menu mode, selects a menu option. When
entering numbers, moves one space to the right and
executes the function when the entry is complete.
2—3
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Instrument Operation, continued
Key
Description Function
MENU
Enter/Exit the menu mode
Press and hold for approximately 5 seconds to enter
user-entered method mode.
Menu Selections
Press the MENU key to access the menu selections.
Switching Ranges
1. Press the MENU key. The display will show “SEL”. A flashing arrow
indicates the current range.
2. Press the READ/ENTER key to toggle between ranges.
3. Press MENU again to accept and exit back to the measurement screen.
Setting the Time
1. Press the MENU key, then press the ZERO/SCROLL key until the display
shows a time in the “00:00” format.
2—4
5957088.book Page 5 Friday, March 22, 2013 3:54 PM
Instrument Operation, continued
2. Press READ/ENTER. The digit to be edited will flash.
3. Use the ZERO/SCROLL key to change the entry, then press READ/ENTER to
accept and advance to the next digit. The time is entered in 24-hour format.
Recalling Stored Measurements
1. Press the MENU key, then press the ZERO/SCROLL key until the display
shows RCL. The instrument automatically stores the last
10 measurements.
2. In RCL, press READ/ENTER to recall the stored measurements, beginning
with the most recent measurement taken. The meter stores the
measurement number as 01 (most recent) through 10 (oldest), the time the
measurement was taken, and the measurement value. The ZERO/SCROLL
key allows for selection of a specific measurement by number. The
READ/ENTER key scrolls through all stored data points.
2—5
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Instrument Operation, continued
Battery Installation
Figure 1 on page 2—7 provides an exploded view of battery installation.
1. Unhook the latch and remove the battery compartment cover. The
polarities are shown on the battery holder.
2. Place the four batteries provided with the instrument in the holder as
indicated and replace the battery compartment cover. The display will
show the software version number (e.g., “P 1.6”) after correct battery
installation.
When replacing discharged batteries, always replace the complete set of four
alkaline batteries. Rechargeable batteries are not recommended and
cannot be recharged in the instrument.
Note: The Low Battery icon will appear on the display when the batteries have 10%
battery life remaining. The battery icon will flash when the batteries are too low
to complete measurements. See Instrument Keys and Display on page 1—15.
2—6
5957088.book Page 7 Friday, March 22, 2013 3:54 PM
Instrument Operation, continued
Figure 1
Battery Installation
2—7
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Instrument Operation, continued
2—8
5957088.book Page 9 Friday, March 22, 2013 3:54 PM
Error Codes
When the instrument cannot perform the function initiated by the operator, an
error message will appear in the display. Refer to the appropriate message
information below to determine what the problem is and how it can be
corrected. Resolve error messages in the order that they appear on the
display. Service Centers are listed in Repair Service on page 37.
Error Messages
1. E-0 No Zero (User mode)
Error occurs when trying to read a standard in the user calibration mode
before setting the meter to zero.
•
Zero the instrument on an appropriate blank.
2. E-1 Ambient Light Error
There is too much light present to take a valid measurement.
•
•
Verify instrument cap is correctly seated.
If the problem persists, contact a Service Center (Repair Service on
page 37).
2—9
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Error Codes, continued
3. E-2 LED Error
The LED (light source) is out of regulation.
•
•
Replace batteries.
•
If the problem persists, contact a Service Center (page 2—37).
Verify LED lights up (inside the cell holder) when the READ/ENTER or
ZERO/SCROLL key is pressed.
Note: When an E-1 or E-2 error occurs on a measurement, the display will show
“_.__”. (The decimal place is determined by the chemistry.) If the E-1 or E-2
error occurs while zeroing the meter, the meter must be zeroed again.
4. E-3 Standard Adjust Error
The value obtained on the prepared standard exceeds the adjustment
limits allowed for the standard concentration, or the concentration of the
standard is outside the concentration range allowed for standard
calibration adjust.
•
•
Prepare the standard and rerun according to the procedure.
Prepare a standard at or near the recommended concentrations given
in the procedure.
2—10
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Error Codes, continued
•
•
Verify that the concentration of the standard has been entered correctly.
If the problem persists, contact a Service Center (page 2—37).
5. E-6 Abs Error (User mode)
Indicates that the absorbance value is invalid, or indicates an attempt to
make a curve with less than two points.
•
•
Enter or measure the absorbance value again.
If the problem persists, contact a Service Center (page 2—37).
6. E-7 Standard Value Error (User mode)
Standard concentration is equal to another standard concentration that is
already entered.
•
•
Enter the correct standard concentration.
If the problem persists, contact a Service Center (page 2—37).
2—11
5957088.book Page 12 Friday, March 22, 2013 3:54 PM
Error Codes, continued
7. E-9 Flash Error
The meter is unable to save data.
•
If the problem persists, contact a Service Center (page 2—37).
8. Underrange—flashing number below stated test range
• Verify instrument cap is correctly seated.
•
Check zero by measuring a blank. If error recurs, re-zero the
instrument.
•
If the problem persists, contact a Service Center (page 2—37).
9. Overrange—flashing number above stated test range
Note: Flashing value will be 10% over the upper test limit.
•
•
Check for light blockage.
Dilute and retest sample.
2—12
5957088.book Page 13 Friday, March 22, 2013 3:54 PM
Standard Calibration Adjust
The Pocket Colorimeter™ II instrument is factory-calibrated and ready for use
without user calibration. Use of the factory calibration is recommended unless
the user is required to generate a calibration. The Standard Calibration Adjust
can be used to meet regulatory requirements.
This feature allows the factory default calibration curve to be adjusted with a
known standard. Use the standard described in the procedure.
1.
2.
3.
4.
5.
Place a blank in the meter (in measurement mode). Press ZERO/SCROLL.
Place the reacted standard in the meter. Press READ/ENTER.
Press MENU, then press ZERO/SCROLL until the display shows “SCA”.
Press READ/ENTER to display the standard calibration adjust value.
Press READ/ENTER to adjust the curve to the displayed value. The meter will
return to the measurement mode and the Calibration Adjusted icon will
appear in the display window.
If an alternate concentration is used, or if a standard concentration is not given:
6. Repeat steps 1–4.
2—13
5957088.book Page 14 Friday, March 22, 2013 3:54 PM
Standard Calibration Adjust, continued
7. Press ZERO/SCROLL to access the Edit function, then press READ/ENTER to
begin editing. The digit to be edited will flash. Use the ZERO/SCROLL key to
change the entry, then press READ/ENTER to accept and advance to the
next digit.
When the last digit is entered, press READ/ENTER and the meter will adjust
the curve to the value entered. The meter will return to measurement mode
and the Calibration Adjusted icon will appear in the display window.
To turn off Standard Calibration Adjust (SCA):
1.
2.
3.
4.
Press MENU.
Press ZERO/SCROLL until “SCA” appears in the display.
Press READ/ENTER, then press ZERO/SCROLL until “Off” is shown.
Press READ/ENTER to turn off SCA.
Note: Perform another standard calibration adjust to turn SCA on again.
Note: For meters with factory-calibrated ranges or methods, Standard Calibration
Adjust (SCA) will be disabled when a user-entered method is programmed
into the meter. To turn SCA back on, restore the meter to factory default
calibration. See Retrieving the Factory Calibration on page 2—26.
2—14
5957088.book Page 15 Friday, March 22, 2013 3:54 PM
User-Entered Calibration
Overview
The Pocket Colorimeter™ II will accept a user-prepared calibration curve. The
curve can extend from 0 to 2.5 absorbance. A user-prepared calibration curve
may be entered into any channel that does not contain a factory-programmed
curve. These channels are labeled “abs” on instruments having a single factory
calibration or are labeled “1” and “2” on the uncalibrated single wavelength
instruments. Any chemistry that can be run at the instrument wavelength may
be user-entered in these channels.
Using prepared standard solutions that cover the range of interest, the meter
generates a calibration curve by calculating the straight-line segments
between each standard entered. A calibration curve may be entered using the
keypad. Factory-entered calibration curves may also be recalculated or
adjusted using the same procedure.
To enter the user-entered calibration mode, press the MENU key and hold it
down until the display shows “USER” (about 5 seconds), followed by “CAL”.
Press ZERO/SCROLL to scroll through the options.
Note: If the meter does not display USER followed by CAL after pressing the
MENU
key, the factory calibration cannot be modified on this channel.
2—15
5957088.book Page 16 Friday, March 22, 2013 3:54 PM
User-Entered Calibration, continued
•
CAL—Used to enter and edit standard values and measure absorbance
values, or review the existing calibration.
•
Edit—Used to enter and edit standard values and absorbance values with
the keypad or review the existing calibration. Used to enter a
predetermined calibration curve.
•
dFL—Used to return the instrument back to the default factory calibration.
User-entered calibrations are stored upon exit from the calibration or
edit modes.
Note: To return to factory settings, following the instructions in Retrieving the
Factory Calibration on page 2—26.
If the instrument is shut off or loses power during data entry, all edits will be lost.
Automatic shut-off in user-entered calibration entry mode is 60 minutes.
CAL and Edit Submenus
In CAL mode, standard values are entered and absorbance values are
measured. In Edit mode, standard and absorbance values are entered.
•
To select CAL from the User menu, press READ/ENTER.
2—16
5957088.book Page 17 Friday, March 22, 2013 3:54 PM
User-Entered Calibration, continued
•
•
To select Edit from the User menu, press ZERO/SCROLL and READ/ENTER.
Once in the CAL or Edit option, press the READ/ENTER key to navigate
through each option.
Note: Press ZERO/SCROLL to quickly scroll through each option.
Calibration Procedure Using Prepared Standards
Note: Deionized water or a reagent blank can be used to zero during the calibration
procedure. Calibrations generated with deionized water as the zero will give
less accurate results if the reagent blank is significantly more turbid or colored
than deionized water. Use the deionized water or the reagent blank as the zero
concentration point (S0) in the following calibration procedure.
1. Turn on the instrument and select the range to be calibrated. An arrow at
the top of the display will point to the selected range. To change ranges,
press the MENU key, then use the READ/ENTER key to toggle between
ranges 1 and 2. Press MENU again to return to measurement mode.
2—17
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User-Entered Calibration, continued
2. Follow the procedure for the chemical method to be calibrated. Prepare a
reagent blank (if needed) and a standard solution. Allow the color to
develop fully.
3. Insert the reagent blank or deionized water into the meter and cover with
the cap. Press the ZERO/SCROLL key. The meter will display “- - - -”,
followed by “0.000”. This initializes (zeroes) the meter.
4. Press the MENU key and hold it down until the display shows “USER”,
followed by “CAL”. Press READ/ENTER to enter the calibration mode.
5. In factory-calibrated meters, S0 will appear in the display.
Note: When recalibrating a factory-calibrated meter or range, RES (resolution)
cannot be changed.
6. In uncalibrated meters or meters with ranges labeled Abs, “RES” will
appear. Press ZERO/SCROLL to review the current resolution (decimal
placement). Press ZERO/SCROLL again to accept the current resolution. To
change the resolution, press READ/ENTER, then ZERO/SCROLL to change the
resolution. Press READ/ENTER to accept the new resolution. “S0” will
appear on the display.
7. Press the READ/ENTER key again, then enter the blank value.
2—18
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User-Entered Calibration, continued
Note: Press the READ/ENTER key to move from digit to digit. Use the ZERO/SCROLL
key to change the number.
8. After completing entry of the blank value, press the READ/ENTER key. The
display will show “A0”.
9. Insert the reagent blank or deionized water into the cell holder. Cover the
blank with the instrument cap.
10. Press the READ/ENTER key. The meter will measure and display the
absorbance value for “S0”.
11. Remove the sample blank. Press the ZERO/SCROLL key. “S1” will appear.
Press the READ/ENTER key, then enter the first standard value.
Note: Press the READ/ENTER key to move from digit to digit. Use the ZERO/SCROLL
key to change the number.
12. After completing entry of the first standard value, press the READ/ENTER
key. The display will show “A1”.
13. Insert the first reacted standard solution into the cell holder. Cover the
prepared standard with the instrument cap.
2—19
5957088.book Page 20 Friday, March 22, 2013 3:54 PM
User-Entered Calibration, continued
14. Press the READ/ENTER key. The meter will measure and display the
absorbance value for S1.
15. The calibration is complete with two points. If additional standards are
required, press ZERO/SCROLL until “Add” appears on the display. Repeat
steps 11–14 to enter additional standards.
16. Press the MENU key twice to exit and accept the changes. The instrument
will use this calibration to determine the displayed concentration of future
sample measurements.
Entering a Predetermined Calibration Curve
Note: Entering a predetermined calibration curve requires at least two data pairs.
Each data pair requires a concentration value and the absorbance value for
the given concentration. Up to 10 data pairs may be entered. This procedure
uses the Edit mode.
1. Turn on the instrument and select the range to be calibrated. An arrow at
the top of the display will point to the selected range. To change ranges,
press the MENU key, then use the READ/ENTER key to toggle between
ranges 1 and 2. Press MENU again to return to measurement mode.
2—20
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User-Entered Calibration, continued
2. Press the MENU key and hold it down until the display shows “USER”,
followed by “CAL”. Press ZERO/SCROLL to scroll to EDIT. Press READ/ENTER.
3. In uncalibrated meters or in Abs range, “RES” will appear. Press
ZERO/SCROLL. To change the resolution (decimal placement), press
READ/ENTER. Press ZERO/SCROLL to select the new resolution, then press
READ/ENTER to accept. “S0” will appear on the display.
4. Enter the concentration value and absorbance value of the first data pair
(S0, A0).
5. To enter the S0 value, press READ/ENTER. Use the ZERO/SCROLL key to
select the numerical value, then press the READ/ENTER key to accept the
entry and advance to the next decimal place. Repeat this sequence until
the S0 concentration value is entered.
6. After editing the S0 value, press READ/ENTER to accept. “A0” will appear on
the display.
7. To enter the absorbance value for S0, press the READ/ENTER key to go to
entry mode. Use the ZERO/SCROLL key to select the numerical value, then
press the READ/ENTER key to accept the entry and advance to the next
decimal place. Repeat this sequence until the absorbance value for S0 is
entered.
2—21
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User-Entered Calibration, continued
8. After entering A0, press READ/ENTER to accept. “S1” will appear on the
display.
9. Repeat steps 5 through 8 for each standard value and absorbance value
pair in the calibration curve
Note: After A1 is entered, Add will appear in the display. If additional data pairs are
to be entered, press READ/ENTER and continue with step 9.
10. When all the calibration data has been entered, press MENU twice to return
to the measurement mode.
Editing a User-entered or Factory Calibration Curve
1. Press the MENU key and hold it down until the display shows “USER”,
followed by “CAL”. Press ZERO/SCROLL until EDIT appears.
Note: If the meter does not display USER followed by CAL after pressing the
MENU
key, the factory calibration cannot be modified on this channel.
2. Press the READ/ENTER key to enter Edit mode. In factory-calibrated meters,
“S0” will appear in the display.
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User-Entered Calibration, continued
Note: When editing a factory-calibrated meter or range, RES (resolution) cannot
be changed.
Note: When RES or S0 appears in the display, press ZERO/SCROLL to quickly
scroll to the data to be edited.
3. In uncalibrated meters or in Abs range, “RES” will appear. Press
ZERO/SCROLL to review the current resolution. Press ZERO/SCROLL again to
accept the displayed resolution. To change the resolution (decimal
placement), press READ/ENTER. Press ZERO/SCROLL to select the new
resolution, then press READ/ENTER to accept. “S0” will appear on the
display.
4. Press READ/ENTER. The current concentration value for S0 will appear on
the display.
5. To edit the S0 value, press READ/ENTER. Use the ZERO/SCROLL key to select
the numerical value, then press the READ/ENTER key to accept the entry
and advance to the next decimal place. Repeat this sequence until the S0
concentration value is entered.
6. After editing the S0 value, press READ/ENTER to accept. “A0” will appear on
the display.
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User-Entered Calibration, continued
7. To edit the absorbance value for S0, press the READ/ENTER key to go to
entry mode. Use the ZERO/SCROLL key to select the numerical value, then
press the READ/ENTER key to accept the entry and advance to the next
decimal place. Repeat this sequence until the absorbance value for S0 is
entered.
8. After editing A0, press READ/ENTER to accept. “S1” will appear on the
display.
9. Repeat steps 4 through 8 for each standard value and absorbance value
pair in the calibration curve.
10. When all calibration data has been reviewed or edited, “ADD” will appear
in the display.
11. Press READ/ENTER to add more calibration points, or press MENU twice to
return to the measurement mode.
Note: When a factory calibration curve has been edited, the “calibration adjust”
icon will appear in the display.
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User-Entered Calibration, continued
Exiting the Calibration Routine
Exit the calibration routine by pressing the MENU key to return to measurement
mode. The instrument uses the last completed user-entered calibration or the
factory calibration if no user-entered calibration has been completed.
Deleting Calibration Points
1. Select the range containing user-entered calibration points. See Switching
Ranges on page 2—4.
2. Press and hold the MENU key until “USER”, then “CAL” appears. Press
READ/ENTER.
Note: Calibration points can also be deleted in Edit mode.
3. Press ZERO/SCROLL to select the point to delete (e.g., S0 or S1 or S2).
Press READ/ENTER.
4. The left digit will flash. Press ZERO/SCROLL until “dEL” appears. (“dEL” will
appear after the numeral 9.)
5. Press READ/ENTER to delete. Repeat for all points to be deleted.
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User-Entered Calibration, continued
Note: The minimum number of valid points is two. For example, if five points have
been entered, three can be deleted using this feature.
6. Press MENU to return to the measurement mode.
Retrieving the Factory Calibration
1. Select the range to restore factory default calibration. See Switching
Ranges on page 2—4.
2. Press and hold the MENU key until “USER”, then “CAL” appears.
Note: If the meter does not display USER followed by CAL after pressing the
MENU
key, the factory calibration cannot be modified on this channel.
3. Press the ZERO/SCROLL key to find dFL.
4. Press the READ/ENTER key to select dFL and restore the instrument to the
factory default calibration.
Note: For meters with factory-calibrated ranges or methods, Standard Calibration
Adjust (SCA) will be disabled when a user-entered method is programmed
into the meter. To turn SCA back on, restore the meter to factory default
calibration.
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User-Entered Calibration, continued
Maximum/Minimum Displayed Value
In meters with absorbance (Abs) ranges, the maximum displayed value and
minimum displayed value is related to the value of the standards entered in a
user calibration.
Measurements that exceed the minimum or maximum standards entered in the
user calibration will return a flashing number indicating “underrange” or
“overrange”. See Error Codes (page 2—12) for more information.
Example 1
For a calibration with the following standards:
S0=0.000
S1=1.000
Maximum Displayed Value
1.000
Minimum Displayed Value
0.000
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User-Entered Calibration, continued
Example 2
For a calibration with the following standards:
S0=1.00
S1=2.00
S2=4.00
Maximum Displayed Value
4.00
Minimum Displayed Value
1.00
For Hach-calibrated programs, the maximum and minimum displayed values
always equal the factory-calibrated values and cannot be changed.
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5957088.book Page 29 Friday, March 22, 2013 3:54 PM
Certification
Hach Company certifies this instrument was tested thoroughly, inspected, and
found to meet its published specifications when it was shipped from the factory.
The Pocket Colorimeter™ II instrument has been tested and is certified as
indicated to the following instrumentation standards:
EMC Immunity:
Per 89/ 336/ EEC EMC: EN 61326: 1998 (Electrical Equipment for
measurement, control and laboratory use—EMC requirements). Supporting
test records by
Hach Company, certified compliance by Hach Company.
Standard(s) include:
IEC 1000-4-2: 1995 (EN 61000-4-2: 1995) Electro-Static Discharge Immunity
(Criteria B)
IEC 1000- 4- 3: 1995 (EN 61000- 4- 3: 1996) Radiated RF Electro- Magnetic
Field Immunity (Criteria A)
Additional Immunity Standard(s) include:
ENV 50204: 1996 Radiated Electromagnetic Field from Digital Telephones
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Certification, continued
(Criteria A) Radio Frequency Emissions:
Per 89/ 336/ EEC EMC: EN 61326: 1998 (Electrical Equipment for
measurement, control and laboratory use—EMC requirements) “Class B”
emission limits. Supporting test records from Hach EMC Test Facility, certified
compliance by Hach Company.
Additional Radio Frequency Emissions Standard(s) include:
EN 55022 (CISPR 22), Class B emissions limits.
Canadian Interference-causing Equipment Regulation, IECS-003, Class
A: Supporting test records from Hach EMC Test Facility, certified compliance
by Hach Company.
This Class A digital apparatus meets all requirements of the Canadian
Interference-causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du
Règlement sur le matériel brouilleur du Canada.
FCC Part 15, Class “A” Limits: Supporting test records from Hach EMC Test
Facility, certified compliance by Hach Company.
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5957088.book Page 31 Friday, March 22, 2013 3:54 PM
Certification, continued
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
(1) This device may not cause harmful interference, and (2) This device must
accept any interference received, including interference that may cause
undesired operation. Changes or modifications to this unit not expressly
approved by the party responsible for compliance could void the user's
authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user
will be required to correct the interference at his own expense. The following
techniques of reducing the interference problems are applied easily.
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5957088.book Page 32 Friday, March 22, 2013 3:54 PM
Certification, continued
1. Remove power from the Pocket Colorimeter instrument by removing one
of its batteries to verify that it is or is not the source of the interference.
2. Move the Pocket Colorimeter instrument away from the device receiving
the interference.
3. Reposition the receiving antenna for the device receiving the interference.
4. Try combinations of the above.
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5957088.book Page 33 Friday, March 22, 2013 3:54 PM
GENERAL INFORMATION
At Hach Company, customer service is
an important part of every product we
make.
With that in mind, we have compiled the
following information for your
convenience.
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5957088.book Page 34 Friday, March 22, 2013 3:54 PM
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5957088.book Page 35 Friday, March 22, 2013 3:54 PM
How to Order
By Telephone:
6:30 a.m. to 5:00 p.m. MST
Monday through Friday
(800) 227-HACH (800-227-4224)
U.S.A.
By Mail:
Hach Company
P.O. Box 389
Loveland, Colorado 80539-0389
By FAX:
(970) 669-2932 (Hach Loveland)
For order information by E-mail:
orders@www.hach.com
Information Required:
•
Hach account number (if
available)
•
Purchase order number
•
Billing address
•
Catalog number
•
Shipping address
•
Brief description or model
number
•
Your name and phone number
•
Quantity
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5957088.book Page 36 Friday, March 22, 2013 3:54 PM
How to Order, continued
Technical and Customer Service (USA only)
Hach Technical and Customer Service Department personnel are eager to
answer questions about our products and their use and to take your orders.
Specialists in analytical methods, they are happy to put their talents to work for
you.
Call 1-800-227-4224 or E-mail techhelp@hach.com.
International Customers
Hach maintains a worldwide network of dealers and distributors. To locate the
representative nearest you, send E-mail to intl@hach. com or call (970) 6693050.
In Canada
Hach Instrument Service Centre, Winnipeg, Manitoba, Canada
Telephone: (204) 632-5598; (800) 665-7635
FAX: (204) 694-5134
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5957088.book Page 37 Friday, March 22, 2013 3:54 PM
Repair Service
Authorization must be obtained from Hach Company before sending any items
for repair. Please contact the Hach Service Center serving your location.
In the United States:
Hach Company
100 Dayton Avenue
Ames, Iowa 50010
(800) 227-4224 (USA only)
FAX: (515) 232-3835
Canada:
Hach Sales & Service Canada Ltd.
1313 Border Street, Unit 34
Winnipeg, Manitoba R3H 0X4
(800) 665-7635 (Canada only)
Telephone: (204) 632-5598
FAX: (204) 694-5134
E-mail: canada@hach.com
Latin America, Caribbean, Africa, Europe, the Middle East,
Far East, Indian Subcontinent:
or Mediterranean Africa:
Hach Company World Headquarters HACH Company, c/o
P.O. Box 389
Dr. Bruno Lange GmbH & CO. KG
Loveland, Colorado 80539-0389 U.S.A.Willstätterstr. 11
Telephone: (970) 669-3050
40549 Düsseldorf, Germany
FAX: (970) 669-2932
Telephone: +49/(0)211/52 88-0
E-mail: intl@hach. com.
FAX: +49/(0)211/52 88-134
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5957088.book Page 38 Friday, March 22, 2013 3:54 PM
Warranty
Hach Company warrants this product to the original purchaser against any
defects that are due to faulty material or workmanship for a period of two years
from date of shipment.
In the event that a defect is discovered during the warranty period, Hach
Company agrees that, at its option, it will repair or replace the defective product
or refund the purchase price, excluding original shipping and handling charges.
Any product repaired or replaced under this warranty will be warranted only for
the remainder of the original product warranty period.
This warranty does not apply to consumable products such as chemical
reagents; or consumable components of a product, such as, but not limited to,
lamps and tubing.
Contact Hach Company or your distributor to initiate warranty support.
Products may not be returned without authorization from Hach Company.
Limitations
This warranty does not cover:
•
damage caused by acts of God, natural disaster, labor unrest, acts of war
(declared or undeclared), terrorism, civil strife or acts of any
governmental jurisdiction
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5957088.book Page 39 Friday, March 22, 2013 3:54 PM
Warranty, continued
•
damage caused by misuse, neglect, accident or improper application
or installation
•
damage caused by any repair or attempted repair not authorized by
Hach Company
•
any product not used in accordance with the instructions furnished by
Hach Company
•
•
freight charges to return merchandise to Hach Company
•
travel fees associated with on-site warranty repair
freight charges on expedited or express shipment of warranted parts
or product
This warranty contains the sole express warranty made by Hach Company in
connection with its products. All implied warranties, including without limitation,
the warranties of merchantability and fitness for a particular purpose, are
expressly disclaimed.
Some states within the United States do not allow the disclaimer of implied
warranties and if this is true in your state the above limitation may not apply to
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5957088.book Page 40 Friday, March 22, 2013 3:54 PM
Warranty, continued
you. This warranty gives you specific rights, and you may also have other rights
that vary from state to state.
This warranty constitutes the final, complete, and exclusive statement of
warranty terms and no person is authorized to make any other warranties or
representations on behalf of Hach Company.
Limitation of Remedies
The remedies of repair, replacement or refund of purchase price as stated
above are the exclusive remedies for the breach of this warranty. On the basis
of strict liability or under any other legal theory, in no event shall Hach
Company be liable for any incidental or consequential damages of any kind for
breach of warranty or negligence.
2—40