ORBECO SC450 User manual

Instruction Manual
DE
GB
FR
IT
ES
Bedienungsanleitung
Istruzioni d'uso
Mode d'emploi
Instrucciones
Seite 3–19
Page 21–37
Page 39–55
Pagina 57–73
Página 75–91
SC450
Single Parameter Colorimeter
Chlorine & pH
For use with SC450-15

Declaration of CE-Conformity
Déclaration de conformité CE / CE -Declaración de conformidad
———————————————————————————————————————
Manufacturer / Fabricant / Fabricante:
Orbeco-Hellige, Inc. / 6456 Parkland Drive / Sarasota, FL 34243-4036 / U.S.A.
———————————————————————————————————————
Product name / Nom du fabricant / Nombre del productor:
SC450, Single Prarameter Colorimeter
———————————————————————————————————————
Declaration of EC-Conformity according to DIRECTIVE 2004/108/EG OF THE
EUROPEAN PARLIAMENT AND OF THE COUNCIL of 2004, December the 15th.
The manufacturer declares that this product meets the requirements of the
following product family standard:
Déclaration de conformité CE conformément à la DIRECTIVE 2004/108/CE DU
PARLEMENT EUROPÉEN ET DU CONSEIL du 15 décembre 2004. La fabricant
déclare que le produit est conforme aux exigences de la norme de famille de
produits suivante :
CE - Declaración de conformidad conforme a la NORMA 2004/108/ CE
DEL PARLAMENTO Y DEL CONSEJO EUROPEO del 15 de diciembre de 2004.
El fabricante declara, que este producto cumple con las exigencias de la
siguiente norma correspondiente a la familia de productos:
———————————————————————————————————————
DIN EN 61326-1:2006
———————————————————————————————————————
Basic immunity test requirements (Table1) / Emission according to the
requirements for class B equipment
Conformément aux exigences fondamentales relatives aux essais d'immunité
(tableau 1) / Émissions parasites conformément aux exigences applicables aux
appareils de la classe B
De acuerdo a los requisitos básicos de verificación para la resistencia a
interferencias (tabla 1) / Emisión de interferencias conforme a las exigencias para
aparatos de clase B
Sarasota, FL. 01. November 2010 Bradley K. Martell, President
To download manuals in French and Spanish, please visit www.orbeco.com

3
SC450_V1_10/2011
Contents
CAUTION
The accuracy of the instrument is only valid if the instrument is used in an
environment with controlled electromagnetic disturbances according to DIN 61326.
Wireless devices, e.g. wireless phones, must not be used near the instrument.
General notes• ......................................................4
Guidelines for photometric measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Method notes .......................................................4
Replacement of batteries...............................................5
Functional description• ...............................................6
Operation ..........................................................6
Display backlight.....................................................7
Recall of stored data ..................................................7
Countdown ........................................................7
Methods• ..........................................................8
Chlorine,withpowderpack(CL2) .......................................8
Chlorine,withpowderpack(CL8) ......................................10
pH-value, with tablet.................................................12
pH-value,withliquidreagent ..........................................13
Menu options• .....................................................14
Menuselections....................................................14
Recall of stored data .................................................14
Transmittingstoreddata..............................................14
Settingdateandtime................................................15
Calibration Mode• ..................................................15
User calibration.....................................................15
Factory calibration reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Technical data• .....................................................18
Operatingmessages.................................................19
Errorcodes........................................................19
Instrument accessories information ......................................19

4SC450_V1_10/2011
General notes
Guidelines for photometric measurements
Vials, caps and stirring rods should be cleaned thoroughly1. after each analysis to prevent
interference. Even minor reagent residues can cause errors in the test result.
The outside of the vial must be clean and dry before starting the analysis. Clean the outside2.
of the vials with a lint-free cloth (L197635) to remove fingerprints or other marks.
Zero calibration and test must be carried out with the same vial as there may be slight3.
differences in optical performance between vials.
The vials must be positioned in the sample chamber for zeroing and test with the4. mark
on the vial aligned with the mark on the instrument.
Always perform zeroing and test with the vial cap tightly closed. Only use the cap with5.
a light-shielding ring.
Bubbles on the inside wall of the vial lead to incorrect measurements. To prevent this,6.
remove the bubbles by gently swirling the vial before performing the test.
Avoid spillage of water into the sample chamber because this can lead to incorrect test7.
results.
Contamination of the transparent cell chamber can result in incorrect readings. Check8.
at regular intervals and – if necessary – clean the transparent cell chamber using a moist
cloth or cotton swab.
Large temperature differences between the instrument and the environment can lead to9.
errors – e.g. due to the formation of condensation in the cell chamber or on the vial.
To avoid errors caused by stray light do not use the instrument in bright sunlight.10.
The reagents must be added in the correct sequence.11.
Method notes
Prior to measurement ensure that the sample is suitable for analysis (no major interferences)•
and does not require any preparation i.e. pH adjustment, filtration etc.
Reagents are designed for use in chemical analysis only and should be kept well out of•
the reach of children.
Ensure proper disposal of reagent solutions.•
Material Safety Data Sheets are available on request•
(Internet: www.orbeco.com)

5
SC450_V1_10/2011
General notes
Correct filling of the vial:
Replacement of batteries:
Correct position of the vial (Ø 24 mm):
CAUTION:
To ensure that the instrument is water proof:
seal ring (E) must be in position•
battery compartment cover (B) must be fixed with the four screws•
If the batteries are removed for more than one minute the date and time menu starts auto-
matically when the colorimeter is turned on the next time.
AAA/LR 03
AAA/LR 03
AAA/LR03
AAA/LR 03
(D) batteries
(E) seal ring
(C) notch
(F) instrument back
(B) battery compart-
ment cover
(A) screws
correct
10 ml
5 ml
10 ml
5 ml
wrong
correct correct wrongwrong

6SC450_V1_10/2011
Functional description
Operation
Turn the unit on using the [ON/OFF] key.
The display shows the following:
Select the required test using the [MODE] key.
Scroll Memory (SM)
To avoid unnecessary scrolling for the required test method, the in-
strument memorizes the last method used before being turned off.
When the instrument is turned on again, the scroll list comes up with
the last used test method first.
The display shows the following:
Fill a clean vial with the water sample up to the 10 ml mark, screw the
cap on and place the vial in the sample chamber making sure that the
marks are aligned.
Press the [ZERO/TEST] key.
The "Method" symbol flashes for approx. 8 seconds.
The display shows the following:
After zero calibration is completed, remove the vial from the sample
chamber. The characteristic coloration appears after the addition of
the reagents.
Replace the cap on the vial and place in the sample chamber making
sure that the marks are aligned.
Press the [ZERO/TEST] key.
(For Countdown/reaction period see page 23)
The "Method" symbol flashes for approx. 3 seconds.
The result appears in the display.
The result is saved automatically.
Repeating the test:
Press the [ZERO/TEST] key again.
Repeating the zero:
Press the [ZERO/TEST] key for 2 seconds.
METHOD
METHOD
METHOD
RESULT
On
Off
Mode
Zero
Test
Zero
Test
Zero
Test
0.0.0
Zero
Test
METHOD

7
SC450_V1_10/2011
Functional description
Display backlight
Press the [!] key to turn the display backlight on or off. The backlight
is automatically turned off during the measurement.
Recall of stored data
If the instrument is turned on, press the [!] key for more than
4 seconds to access the recall menu.
!
!
!
Countdown / reaction period
If a reaction period is included in a method a countdown function
can be used:
Press the [!] key and hold.
Press the [ZERO/TEST] key.
Release the [!] key; the countdown starts.
After the countdown is finished the measurement starts automati-
cally.
It is possible to interrupt the countdown by pressing the [ZERO/TEST]
key. Measurement starts immediately.
Caution:
An incomplete reaction period can lead to incorrect test
results.
Zero
Test

8SC450_V1_10/2011
Methods
Chlorine with Powder Pack
0.02 – 2.0 mg/l
a) Free Chlorine
Fill a clean vial (24 mm Ø) with 10 ml of the water sample and
perform zero calibration (see “Operation”).
Remove the vial from the sample chamber.
Add the contents of one Chlorine Free-DPD/F10 Powder Pack
straight from the foil into the water sample.
Close the vial tightly with the cap and invert several times to mix the
contents (20 sec.).
Place the vial in the sample chamber making sure that the marks
are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l free Chlorine.
b) Total Chlorine
Remove the vial from the sample chamber.
Rinse the vial and the cap several times and then fill the vial with
10 ml of water sample (Note 2 and 3).
Add the contents of one Chlorine Total-DPD/F10 Powder Pack
straight from the foil into the water sample.
Close the vial tightly with the cap and invert several times to mix the
contents (20 sec.).
Place the vial in the sample chamber making sure that the marks
are aligned.
Wait for a reaction period of 3 minutes.
(Countdown can be activated, see page 25)
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l total Chlorine.
c) Combined Chlorine
combined Chlorine = total Chlorine – free Chlorine
Tolerances:
0 – 1 mg/l: ± 0.05 mg/l
> 1 – 2 mg/l: ± 0.10 mg/l
!
Zero
Test
Zero
Test
CL 2
Tablet Powder
CL 2
Tablet Powder
CL 2
Tablet Powder
0.0.0
Tablet Powder
RESULT
Tablet Powder
RESULT
Tablet Powder

9
SC450_V1_10/2011
Methods
Notes:
Vial cleaning:1.
As many household cleaners (e.g. dishwasher detergent) contain reducing substances,
the subsequent determination of Chlorine may show lower results. To avoid any
measurement errors, only use glassware free of Chlorine demand.
Preparation: Put all applicable glassware into Sodium hypochlorite solution (0.1 g/l) for
one hour, then rinse all glassware thoroughly with deionised water.
For individual testing of free and total Chlorine, the use of different sets of glassware is2.
recommended (EN ISO 7393-2, 5.3).
Do not use the same sample vial for free and total chlorine without thoroughly rinsing3.
the vial between the two different tests.
Preparing the sample:4.
When preparing the sample, the loss of Chlorine, e.g. by pipetting or shaking, must be
avoided. The analysis must take place immediately after taking the sample.
The DPD color development is carried out at a pH value of 6.2 to 6.5. The reagents5.
therefore contain a buffer for the pH adjustment.
Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before
the reagent is added (use 0.5 mol/l Sulfuric acid resp. 1 mol/l Sodium hydroxide).
Exceeding the measuring range:6.
Concentrations above 2 mg/l Chlorine can lead to results showing 0 mg/l. In this case,
the water sample must be diluted with water free of Chlorine and the measurement
repeated.
Oxidizing agents such as Bromine, Ozone etc. interfere as they react in the same way as7.
Chlorine.
Reagent re-order information
DPD Free Chlorine Reagent, 10 ml size, 100 pack RP010-0
DPD Free Chlorine Reagent, 10 ml size, 1,000 pack RP010-3
DPD Total Chlorine Reagent, 10 ml size, 100 pack RP012-0
DPD Total Chlorine Reagent, 10 ml size, 1,000 pack RP012-3

10 SC450_V1_10/2011
Methods
Chlorine with Powder Pack
(plastic vial type 2, 10 mm)
0.1 – 8.0 mg/l
a) Free Chlorine
Fill a clean vial (10 mm ) with 5 ml of the water sample and perform
zero calibration (see “Operation”).
Add the contents of two Chlorine Free-DPD/F10 Powder Pack
straight from the foil into the water sample.
Close the vial tightly with the cap and invert several times to mix the
contents (20 sec.).
Place the vial in the sample chamber making sure that the marks
are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l free Chlorine.
b) Total Chlorine
Fill a clean vial (10 mm ) with 5 ml of the water sample and perform
zero calibration (see “Operation”).
Add the contents of two Chlorine Total-DPD/F10 Powder Pack
straight from the foil into the water sample.
Close the vial tightly with the cap and invert several times to mix the
contents (20 sec.).
Place the vial in the sample chamber making sure that the marks
are aligned.
Wait for a reaction period of 3 – 6 minutes.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l total Chlorine.
c) Combined Chlorine
combined Chlorine = total Chlorine – free Chlorine
Tolerances:
2 – 3 mg/l: ± 0,2 mg/l
> 3 – 4 mg/l: ± 0,3 mg/l
> 4 – 8 mg/l: ± 0,4 mg/l
Zero
Test
Zero
Test
CL 8
Tablet Powder
CL 8
Tablet Powder
CL 8
Tablet Powder
RESULT
Tablet Powder
RESULT
Tablet Powder
0.0.0
Tablet Powder
0.0.0
Tablet Powder
10 ml
5 ml
2