PerkinElmer Perkin Elmer - lambda 20 - Perkin Elmer Uvvis-spectrophotometer Lam

PerkinElmer Perkin Elmer - lambda 20 - Perkin Elmer Uvvis-spectrophotometer Lam
Lambda 20/Lambda 40
Installation and
Maintenance Guide
Release History
Part Number
Release
09935055
A
B
Publication Date
November 1996
July 2000
User Assistance
PerkinElmer Ltd
Post Office Lane
Beaconsfield
Buckinghamshire
HP9 1QA
Printed in the United Kingdom.
Notices
The information contained in this document is subject to change without notice.
PerkinElmer makes no warranty of any kind with regard to the material, including, but not
limited to, the implied warranties of merchantability and fitness for a particular purpose.
PerkinElmer shall not be liable for errors contained herein for incidental consequential
damages in connection with furnishing, performance or use of this material.
Copyright Information
This document contains proprietary information that is protected by copyright.
All rights are reserved. No part of this publication may be reproduced in any form
whatsoever or translated into any language without the prior, written permission of
PerkinElmer, Inc.
Copyright © 2000 PerkinElmer, Inc.
Trademarks
Registered names, trademarks, etc. used in this document, even when not specifically marked
as such, are protected by law.
UV WinLab is a trademark of PerkinElmer, Inc.
PerkinElmer is a registered trademark of PerkinElmer, Inc.
Contents
Contents
Contents .......................................................................................................... 3
Safety Information........................................................................................ 5
Safety Information.......................................................................................... 7
Safety Information in the Handbook ....................................................... 7
IEC 1010 Compliance ............................................................................. 8
CSA Compliance ..................................................................................... 8
UL Compliance ....................................................................................... 8
Electrical Protection ................................................................................ 8
Electrical Safety....................................................................................... 8
Electromagnetic Compatibility (EMC) ................................................. 10
Environment .......................................................................................... 12
Symbols Used on the Instrument........................................................... 14
Preface ......................................................................................................... 17
Preface .......................................................................................................... 19
Application ............................................................................................ 19
Documentation ...................................................................................... 20
Basic Installation......................................................................................... 21
Basic Installation .......................................................................................... 23
Overview ............................................................................................... 23
Preparing the Working Area.................................................................. 23
Unpacking and Inspection ..................................................................... 25
Equipment Provided .............................................................................. 26
System Configuration............................................................................ 27
Connecting to the Electrical Supply ...................................................... 28
Single Cell Holder ................................................................................. 29
Minimum Volume Applications............................................................ 34
Setting up the Printer ............................................................................. 35
Accessory Installation................................................................................. 37
Accessory Installation................................................................................... 39
General .................................................................................................. 39
Linear Transporter ................................................................................. 43
Temperature Sensor............................................................................... 44
Multi-sippers.......................................................................................... 45
Autosampler .......................................................................................... 46
Personal Computer ................................................................................ 47
Maintenance ................................................................................................ 49
3
Lambda 20/40 Installation & Maintenance Guide
Maintenance.................................................................................................. 51
Obtaining Service .................................................................................. 51
Daily Care.............................................................................................. 51
Cleaning the Sample Compartment....................................................... 52
Use and Care of Cells ............................................................................ 54
Replacing a Lamp.................................................................................. 55
Changing Fuses ..................................................................................... 65
Maintaining the Internal Printer ............................................................ 66
Replacement Parts...................................................................................... 69
Replacement Parts ........................................................................................ 71
System Description ..................................................................................... 73
System Description....................................................................................... 75
Features ................................................................................................. 75
Optical System Lambda 20 ................................................................... 75
Optical System Lambda 40 ................................................................... 78
Technical Data ............................................................................................ 81
Technical Data.............................................................................................. 83
Lambda 20 ............................................................................................. 83
Lambda 40 ............................................................................................. 87
Translations of Warnings........................................................................... 91
Translations of Warnings.............................................................................. 93
Index .......................................................................................................... 103
Index ........................................................................................................... 105
4
Safety Information
1
Safety Information
Safety Information
Safety Information in the Handbook
This handbook contains information and warnings that must be followed by the user
to ensure safe operation and to maintain the instrument in a safe condition.
Possible hazards that could harm the user or result in damage to the instrument are
clearly stated at appropriate places throughout this handbook.
The following safety conventions are used throughout this handbook:
We use the term WARNING to inform you about situations that could
result in personal injury to yourself or other persons.
WARNING
CAUTION
Details about these circumstances are in a box like this one.
We use the term CAUTION to inform you about situations that could
result in serious damage to the instrument or other equipment
Details about these circumstances are in a box like this one.
Translations of the warning messages used in this handbook are given in
Translations of Warnings on page 93.
Before using the instrument it is essential to read the manual carefully and to pay
particular attention to any advice concerning potential hazards that may arise from
the use of the instrument. The advice is intended to supplement, not supercede the
normal safety code of behavior prevailing in the user’s country.
7
Lambda 20, Lambda 40 UV/Vis Spectrometers
IEC 1010 Compliance
This instrument has been designed and tested in accordance with IEC 1010-1: Safety
requirements for electrical equipment for measurement, control, and laboratory use,
and Amendment 1 to this standard.
CSA Compliance
This instrument meets the Canadian Standards Association (CSA) Standard
CAN/CSA-C22.2 No. 1010.1-92: Laboratory Equipment.
UL Compliance
This instrument meets the Underwriter Laboratories (UL) Standard UL 31011/Oct.93: Electrical Equipment for laboratory use, part 1: general requirements.
Electrical Protection
Insulation: Class I as defined in IEC 1010-1.
Installation Category: The instruments are able to withstand transient overvoltage
according to Installation Category II as defined in IEC 1010-1 and IEC 664.
Pollution Degree: The equipment will operate safely in environments that contain
non-conductive foreign matter and condensation up to Pollution Degree 2 as defined
in IEC 1010-1 and IEC 664.
Electrical Safety
To ensure satisfactory and safe operation of the instrument, it is essential that the
green/yellow lead of the line power cord is connected to true electrical earth
(ground).
If any part of the instrument is not installed by a PerkinElmer service representative,
make sure that the line power plug is wired correctly:
8
Safety Information
Terminal
WARNING
Cord Lead Colors
International
USA
Live
Brown
Black
Neutral
Blue
White
Protective Conductor
(earth/ground)
Green/Yellow
Green
Electrical Hazard
Any interruption of the protective conductor inside or outside the
instrument or disconnection of the protective conductor (earth/ground)
terminal is likely to make the instrument dangerous.
International interruption is prohibited.
Lethal voltages are present in the instrument
•
Even with the power switch OFF, line power voltages can still be
present within the instrument.
•
When the instrument is connected to line power, terminals may be
live, and opening covers or removing parts (except those to which
access can be gained without the use of a tool) is likely to expose
live parts.
•
Capacitors inside the instrument may still be charged even if the
instrument has been disconnected from all voltage sources.
When working with the instrument:
•
Connect the instrument to a correctly installed line power outlet that has a
protective conductor (earth/ground).
•
Do not attempt to make internal adjustments ore replacements except as
directed in this handbook.
•
Do not operate the instrument with any covers or parts removed.
9
Lambda 20, Lambda 40 UV/Vis Spectrometers
•
Servicing should be carried out only by a PerkinElmer service representative or
similarly authorized and trained person.
•
Disconnect the instrument from all voltage sources before opening it for any
adjustment, replacement, maintenance, or repair. If, afterwards, the opened
instrument must be operated for further adjustment, maintenance, or repair, this
must only be done by a skilled person who is aware of the hazard involved.
•
Use only fuses with the required current rating and of the specified type for
replacement. Do not use makeshift fuses or short-circuit the fuse holders.
•
Whenever it is likely that the instrument is no longer electrically safe for use,
make the instrument inoperative and secure it against any unauthorized or
unintentional operation.
The instrument is likely to be electrically unsafe when it:
•
Shows visible damage;
•
Fails to perform the intended measurement;
•
Has been subjected to prolonged storage under unfavorable conditions;
•
Has been subjected to severe transport stresses.
Electromagnetic Compatibility (EMC)
European Union (EMC Directives)
This instrument has been designed and tested to meet the requirements of the EC
Directives 89/336/EEC and 92/31/EEC. It complies with the generic EMC standards
EN 50 081-1 (rf emissions) and EN 50 082-1 (immunity) for domestic, commercial,
and light industrial environments.
10
Safety Information
This instrument has passed the following EMC tests:
Emission: EN 50 081-1:92
Immunity: EN 50 082-1:92
Emission of conducted
and radiated noise
EN 55 011:91
EN 60 555-2:87
EN 60 555-3:87
Electromagnetic Compatibility
IEC 801-2:91
IEC 801-3:84
IEC 801-4:88
IEC 801-5:90
United States (FCC)
This instrument is classified as a digital device used exclusively as industrial,
commercial, or medical equipment. It is exempt from the technical standards
specified in Part 15 of the FCC Rules and Regulations, based on Section 15.103[c].
Japan (FCC)
This instrument has been tested and found to comply with the limits of 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. Changes or modifications not expressly approved by the manufacturer
could void the user’s authority to operate the equipment.
11
Lambda 20, Lambda 40 UV/Vis Spectrometers
Environment
Operating Conditions
Explosive Atmosphere
WARNING
This instrument is not designed for operation in an explosive
atmosphere.
The instrument will operate correctly under the following conditions:
•
Indoors.
•
Ambient temperature +15 ºC to +35 ºC.
•
Ambient relative humidity 20% to 80%, without condensation.
•
Altitude in the range 0 m to 2000 m.
Storage Conditions
You can store the instrument safely under the following conditions:
•
Indoors.
•
Ambient temperature +15 ºC to +35 ºC.
•
Ambient relative humidity 20% to 80%, without condensation.
•
Altitude in the range 0 m to 2000 m.
When you remove the instrument from storage, before putting it into operation allow
it to stand for at least a day under the approved operating conditions.
12
Safety Information
Chemicals
Use, store, and dispose of chemicals that you require for your analyses in
accordance with the manufacturer’s recommendations and local safety regulations.
Hazardous Chemicals
Some chemicals used with this instrument may be hazardous or may
become hazardous after completion of an analysis.
WARNING
The responsible body (for example, Laboratory Manager) must take
the necessary precautions to ensure that the surrounding workplace
and instrument operators are not exposed to hazardous levels of toxic
substances (chemical or biological) as defined in the applicable
Material Safety Data Sheets (MSDS) or OSHA, ACGIH, or COSHH
documents.
Venting for fumes and disposal of waste must be in accordance with all
national, state and local health and safety regulations and laws.
OSHA: Occupational Safety and Health Administration (U.S.A.)
ACGIH: American Conference of Governmental Industrial Hygienists
COSHH: Control of Substances Hazardous to Health (U.K.)
Toxic Fumes
If you are working with volatile solvents or toxic substances, you must provide an
efficient laboratory ventilation system to remove vapors that may be produced when
you are performing analyses.
Waste Disposal
Waste containers may contain corrosive or organic solutions and small amounts of
the substances that were analyzed. If these materials are toxic, you may have to treat
the collected effluent as hazardous waste. Refer to your local safety regulations for
proper disposal procedures.
13
Lambda 20, Lambda 40 UV/Vis Spectrometers
Deuterium lamps and other spectral lamps are maintained under reduced pressure.
When you dispose of lamps that are defective or otherwise unusable, handle them
correctly to minimize the implosion risk.
UV Radiation
You should be aware of the health hazards presented by ultraviolet radiation.
•
When the deuterium (UV) lamp is illuminated, do not open the
spectrophotometer covers unless specifically instructed to do so in the manual.
•
Always wear UV-absorbing eye protection when the deuterium lamp is
exposed.
•
Never gaze into the deuterium lamp.
Symbols Used on the Instrument
Warning symbol shown on the
spectrometer housing
Figure 1 Lambda 20/40 Spectrometers
14
Safety Information
Warning Labels on the Instrument
Warning labels shown on the
inside of the lamp compartment
Figure 2 Lambda 20/40 Spectrometers
15
Lambda 20, Lambda 40 UV/Vis Spectrometers
The following warnings are shown on the inside of the lamp compartment.
DANGER
HIGH
VOLTAGE
DANGER
HAUTE
TENSION
WARNING
UV RADIATION-HARMFUL TO THE EYES
HOT COMPONENTS – RISK OF BURNS
ACHTUNG
UV-STRAHLUNG-GEFÄHRDUNG DER AUGEN
HEISSE BAUTEILE –
VERBRENNUNGSGEFAHR
ATTENTION
RADIATION UV-DOMMAGEABLE POUR
LES YEUX – PARTIES CHAUDES
RISQUE DE BRULURES
16
Preface
2
Preface
Preface
Application
The Lambda 20 and Lambda 40 spectrometers are intended for routine UV/Vis
analysis. The spectrometer features a double-beam, all-reflecting optical system.
Lambda 20 and Lambda 40 spectrometers are usable in a wide range of applications
as indicated by their performance specifications (see Technical Data on page 83)
Lamp
Compartment
Keyboard and
Display Cover
Power Switch
Keyboard
Space for
Optional Printer
Sample Compartment
Connector Panel
Figure 3 Operating controls for Lambda 20/40 Spectrometers
19
Lambda 20, Lambda 40 UV/Vis Spectrometers
Documentation
A documentation package is provided with the spectrometer:
20
•
Installation and Maintenance Guide
This handbook describes the installation, setup, and maintenance procedures
for the spectrometer. It also includes a detailed description of the spectrometer
and a list of consumables and replacement parts.
•
Operation Guide
This handbook contains comprehensive information on operating the
spectrometer and describes the parameters used.
Basic Installation
3
Basic Installation
Basic Installation
Overview
For spectrometers with installation, the initial installation will be performed by a
PerkinElmer service representative. After receipt of the instrument, please contact
your PerkinElmer office or representative for further information.
For spectrometers without installation, you can easily install the instrument by
following the directions given in the table below.
If you intend to use accessories, for example a cell changer or sipper, refer to
Accessory Installation on page 39 to install these accessories.
Preparing the Working Area
For maximum stability and minimum maintenance observe the following
requirements when siting the instrument:
•
A firm base free from vibration.
•
Enough space around and underneath the instrument for efficient air
circulation.
•
A constant temperature between 15 ºC and 35 ºC.
•
Constant humidity between 20% and 80% relative humidity.
•
An atmosphere free from dust and corrosive fumes.
•
Keep out of direct sunlight. Illumination with diffuse lighting is ideal.
23
Lambda 20, Lambda 40 UV/Vis Spectrometers
•
A suitable source of electrical power should be located in the vicinity of the
instrument.
Electrical power must be available at a proper earth-grounded 3-wire electrical
outlet.
Please refer to Technical Data on page 83 for the electrical ratings of the
spectrometer.
•
The standard sample compartment baseplates have drain holes in them to run
off spilled liquids to the benchtop underneath the instrument. You can place a
sheet of thick filter paper under the instrument, if required.
26 cm
Front view
65 cm
Right side view
56 cm
Figure 4 Space Requirements
24
Basic Installation
Unpacking and Inspection
1. Unpack the components carefully.
Keep the packing materials for possible future storage or reshipment.
2. Examine the components for any signs of damage in shipment.
In the event of damage or missing parts, file an immediate claim with the
authorized carrier, and inform your PerkinElmer office or representative.
After the instrument has been unpacked, check the exterior and interior for possible
damage as follows:
1. Check the entire outer cabinet of the spectrometer for damage.
2. Make sure that terminals, fuse holders, etc. are not damaged.
3. Open the sample compartment cover, checking that it moves freely without
binding.
The compartment must be free of dust or other foreign matter.
4. Close the sample compartment cover.
5. Open the lamp compartment as described in Halogen Lamp Replacement on
page 56.
6. Check for damages or loose cables.
7. Close the lamp compartment.
NOTE: We recommend that the initial installation of the spectrometer should be performed
by a PerkinElmer service representative. After receipt of the instrument, please
contact your PerkinElmer office or representative for further information.
You are required to prepare a suitable working space.
25
Lambda 20, Lambda 40 UV/Vis Spectrometers
Equipment Provided
Spectrometer
1 Lambda 20 Spectrometer (Double-beam)
OR
1 Lambda 40 Spectrometer (Double-beam, with four selectable slit widths)
according to order.
Components
The components listed below are provided with the spectrometer.
Quantity
26
Item
Part Number
2
Single-cell holders (Lambda 20/40)
B0505071
1
Screwdriver 4 mm
B0126972
1
Hexagonal socket-head wrench 3 mm
B0140883
1
Dust cover
B0142229
1
Pack of spare fuses
1
Line power cord with suitable connector
for your electrical outlets
1
Set of Documentation
Basic Installation
System Configuration
Spectrometer
External Printer
(option)
Figure 5 Components of the System
•
You can place the (optional) printer to either side of the spectrometer to suit
your own preferences.
•
Do not place the printer or other instruments on top of the spectrometer.
•
When placing instruments side by side, always leave a small gap between
them.
•
If you wish, you can set up the printer on a separate trolley (cart).
•
Make certain that air can circulate freely over and under the system as well as
behind it.
CAUTION
Do not place anything on or under any of the components that could
hinder free air circulation.
27
Lambda 20, Lambda 40 UV/Vis Spectrometers
Connecting to the Electrical Supply
Electrical Hazard
•
WARNING
•
To prevent potential injury to yourself and damage to the
instrument, first make the electrical connections between the
instruments in the system before connecting to the line power
supply.
The spectrometer automatically adjusts to the correct operating
voltage.
Before starting the instrument for the first time, make sure that the
correct fuse is fitted to your line power supply.
If you have a different fuse, change it for the correct one.
Do not connect the spectrometer to the line power supply if the
wrong fuse is fitted.
1. Make sure that the correct fuses are fitted in the holder at the rear of the
spectrometer (see Changing Fuses on page 65).
Voltage
Standard
100 V – 120 V
6.3 A slow-blow
210 V – 240 V
3.15 A slow-blow
NOTE: The module has two fuses.
2. Make sure that the plug fitted to the line power cord provided with the
spectrometer is suitable for your local electrical outlets.
If it is not, remove it and fit a plug conforming to the local regulations.
3. After all connections have been made between the various components of the
system, make certain that all power switches are set to off, then connect the
line cords to the electrical power supply.
The power switch is located at the top right-hand rear of the spectrometer.
28
Basic Installation
NOTE: To prevent interferences caused by earth loops when operating with ancillary
instruments (printers, etc.), connect all components of the system to the same phase
of the electrical supply via a multisocket distributor.
Single Cell Holder
Locking screw
for horizontal
alignment
Vertical adjustment
screw
Lifter
Milled post
Locking screw
for horizontal
alignment
Figure 6 Single Cell Holder B0505071
NOTE: Depending on the spectrometer, the single cell holder can be installed in two
different positions in the sample compartment. Always install the holder such that
the arrow on the cell holder lines up with the center point on the baseplate (see
Installing the Cell Holder on page 30).
29
Lambda 20, Lambda 40 UV/Vis Spectrometers
Inscription legible
on Holder
Use in Spectrometer
LAMBDA
In this position, the cell holder can be used with all
Lambda Series Spectrometers.
BIO LAMBDA 2
In this position, the cell holder can be used with Lambda
2 Series Spectrometers as Lambda 10, 20, 40, Bio, etc.
(baseplate with 4 threaded holes).
The smallest beam diameter is exactly in the middle of
the cell. This is useful especially for operation with
micro and semi-micro cells.
Installing the Cell Holder
Install the single cell holder in the sample compartment as follows:
1. Orientate the holder so that the lifter is toward the rear of the sample
compartment.
2. Lower the holder so that the two alignment holes slip onto the two studs on the
baseplate at the bottom of the sample compartment.
The arrow on the cell holder must line up with the centre point of the baseplate,
and BIO LAMBDA 2 must be legible.
BIO
LAMBDA 2
Tube Ports
30
Arrow
Center Point
Basic Installation
3. Move the milled posts a little to locate the threaded holes in the baseplate, and
then tighten the milled posts.
The tube ports located at the front of the sample compartment allow you to lead
tubes from flowcells, water-thermsotatted cell holders, etc. in and out of the
sample compartment.
When not in use, you should always insert the caps into the ports.
Aligning the Single Cell Holder
Coarse alignment of the single cell holder is carried out as follows:
1. Open the sample compartment cover.
2. Fill matching cells with a low-absorbing solvent (deionized water or ethanol).
3. Insert one cell into the sample cell holder and one into the reference cell holder.
Make certain that the cell is pushed down fully.
NOTE: The alignment procedure is for a given cell in a given holder. After alignment, the
cell should always be used in the same holder.
4. Block the sample and reference beam window on the right hand side of the
sample compartment with a card to prevent white light from saturating the
detector.
5. Return to standby display.
6. Using the [GOTO] key, slew the monochromator to 0 nm to obtain a beam of
visible (zero order) radiation in the sample compartment.
7. By holding a piece of matt white paper behind each cell holder, visually
examine the light spot to see that the radiation beam is passing through the cell
sample area.
Diffraction patterns become apparent if the radiation beam impinges on the cell
wall.
31
Lambda 20, Lambda 40 UV/Vis Spectrometers
8. If the radiation beam is not centered exactly, loosen the two locking screws and
the two milled posts on the relevant cell holder and shift the cell holder plate to
center the radiation beam horizontally.
Then retighten the two milled posts and the two locking screws.
9. Now visually check the vertical alignment of the radiation beam in the cell
sample area.
Alignment is correct when the radiation beam is just above the floor of the cell
sample area (min. 2 mm) or covers the cell window.
NOTE: The center of the window for micro flowcells should be ideally approximately
15 mm above the base of the cell.
Min. 2 mm
Figure 7 Correct Alignment of the Radiation Beam in the Cell Sample Area
10. If vertical alignment is required, turn the vertical adjustment screw on the lifter
either clockwise to raise the cell, or counterclockwise to lower the cell.
11. Recheck the horizontal alignment of the radiation beam through the cell and
correct if necessary.
12. Using the [GOTO] key, slew the monochromator to any value above 200 nm.
13. Remove the card blocking the sample beam window and close the sample
compartment cover.
32
Basic Installation
This completes the coarse alignment of the cell holder. If necessary, proceed with
the fine alignment as described below.
Fine Alignment
If fine alignment is necessary, proceed as follows:
1. Using the [GOTO] key, slew the monochromator to your measurement
wavelength or to 460 nm.
2. Call up a method that uses transmission (%T) as the ordinate.
If necessary change the ordinate mode to transmission.
3. Open the sample compartment cover.
4. Insert the cell with a low absorbing solvent into the sample cell holder.
Leave the reference cell holder empty.
5. Make horizontal fine alignment to the sample cell holder (locking screws and
milled posts loosened) to obtain the highest possible transmittance reading on
the display (close sample compartment cover while measuring transmittance).
6. Make vertical fine adjustment using the vertical adjustment screw again to
obtain the highest possible reading (close sample compartment cover while
measuring transmittance).
7. When you are satisfied with the alignment, tighten the milled posts and the
locking screws on the cell holder.
8. Insert the matching cell with the same low absorbing solvent into the reference
cell holder.
The first cell remains in the sample cell holder.
9. Repeat steps 5 to 7 with the reference cell holder, but this time obtain the
lowest possible transmittance reading on the display.
This completes the fine alignment procedure.
33
Lambda 20, Lambda 40 UV/Vis Spectrometers
When the cell holder has been aligned once, you can take it out and reinstall it
without aligning it again.
Minimum Volume Applications
To measure minimum sample volumes, use microcells (offered by PerkinElmer).
The minimum sample volume required is a function of the cell internal width or
volume and is specified below.
Cell Type
Cell
Internal
Width
Pathlength
Minimum
Volume
Required
1 cm
200 µL
B0631071
(pair)
1 cm
400 µL
B0631064
(pair)
Pathlength
Minimum
Volume
Required
0.5 µL
0.01 cm
2 µL
B0631082
2.5 µL
0.5 cm
5 µL
B0631080
5 µL
0.1 cm
10 µL
B0631083
5 µL
1.0 cm
10 µL
B0631081
30 µL
1.0 cm
50 µL
B0631079
Height of
2 mm
liquid slightly
more than
height of
4 mm
beam
Cell
Volume
Cell window
completely
filled with
liquid
34
Part
Number
Part
Number
Basic Installation
NOTE: You should align microcells very carefully in the radiation beam by following the
procedures in Aligning the Single Cell Holder on page 31. When aligning
microcells, fill each cell with the minimum volume of liquid specified in the above
table to make sure that the liquid meniscus is not in the radiation beam.
Setting up the Printer
Activating the Internal Printer
If you want to use the internal printer, make sure the method PRINTER CONFIG. is
set to EPSON/INTERNAL in Super User. On delivery, the default setting is
EPSON/INTERNAL.
Connecting an External Printer
You can use an external printer for hard-copy printouts of the analytical results.
PerkinElmer offers suitable printers; refer to the current price list for details.
To install an external printer:
1. Switch off the spectrometer, if it is on.
2. Set up the printer as given in the User’s Guide provided with the printer.
3. Configure the printer.
4. Connect the printer to the Parallel Port.
If you connect the printer to the second RS 232 interface, make sure the
Instrument Configuration method is set correctly in Super User.
5. Switch on the spectrometer and the printer to activate the new printer
configuration.
6. Make sure the method PRINTER CONFIG. is set correctly for the connected
printer in Super User.
35
Lambda 20, Lambda 40 UV/Vis Spectrometers
Spectrometer
Printer
Printer Cable
Figure 8 Connecting an External Printer to the Parallel Port
Configuring an External Printer
Make sure the spectrometer is correctly configured for your printer type as described
in Super User printer configuration in the Operation handbook.
With Epson printers make sure the printer parameter is configured correctly for the
type of paper you are using, Z-fold paper or single sheet.
36
Accessory
Installation
4
Accessory Installation
Accessory Installation
General
To operate the spectrometer with some accessories, for example the Peltier
Temperature sensor, you need an accessory printed circuit board (PCB) and a
connector panel. They will be installed by PerkinElmer service.
Procedures for installing the accessories in the spectrometer are described in the
directions provided with the respective accessory.
To install certain accessories you need to remove the sample compartment cover.
The required procedures are described below.
In the directions provided with some sample handling accessories, reference is made
to earlier models in the Lambda Series of spectrometers. These directions are
generally applicable to the current series of instruments since the sample
compartment is standardized.
Accessory Connector Panel (LP5/5)
To facilitate manufacturing procedures, a common connector panel is used for the
Lambda Series of instruments. Not all connectors are required for Lambda 20, or
Lambda 40 (see table below).
39
Lambda 20, Lambda 40 UV/Vis Spectrometers
J11
Cell Changer
Sipper
J14
2
nd
Peltier J30
Sphere J8
J6
Temp
Autosampler
J10
J1
RS232
P15
Accessory Port
Designation
Parallel Port
Connector for
Remarks
Accessory Port
Linear transporter,
multi-sipper
I2C-bus interface
Serial Port
PC, (printer)
First RS 232 C interface
Parallel Port
Printer
Centronics interface
J6, Autosampler
AS90/91 autosampler
J14, Cell Changer, Sipper
Older accessories
Active
PC, printer
Second RS 232 C
interface
J10, J11, Temp
Temperature sensor
J10: 2-pin socket
J11: 4-pin socket
J30, Peltier
Peltier cell changer
and Peltier cell holder
Active
nd
P15, 2
40
Serial Port
RS 232
Accessory Installation
J88, Sphere
Integrating Sphere
Active
J1
Pump for dissolution
Active
Accessory Connections
Autosampler
Peltier Cell Holder
Peltier Cell Changer
Older
Accessories
J
J10
Cell
Changer
Sipper
Peltier J30
Sphere J8
Temp
Autosampler J6
J
J14
P15
J11
J
J1
Temperature Sensor
nd
2 RS232
External Printer
Linear Transporter
Accessory Port Serial Port
Multi-sipper
Parallel Port
PC
41
Lambda 20, Lambda 40 UV/Vis Spectrometers
Sample Compartment Cover
Some of the accessories used with the spectrometer require removal of the sample
compartment cover.
1. Do this carefully as follows:
2. Open the cover only about 90 degrees to the sample compartment.
3. Carefully slide the cover straight up off both hinges to remove.
You install the sample compartment cover, or other accessory cover, by
performing this procedure in reverse.
Sample Compartment Front Cover
Some of the accessories used with the spectrometer require removal of the sample
compartment front cover.
Do this carefully as follows:
1. Open the sample compartment cover.
2. Carefully slide the cover straight up off both hinges to remove.
You install the sample compartment cover, or other accessory cover, by
performing this procedure in reverse.
Sample Compartment Window
To remove or install certain accessories, you need to remove the sample
compartment windows.
Each window has a magnetic frame and can be easily removed by hand.
42
Accessory Installation
Linear Transporter
WARNING
Electrical hazard
To prevent potential injury to yourself and damage to the instrument,
switch OFF all instruments in the system and disconnect them from the
line power supply before you alter, or make any new, electrical
connections.
Installation Overview
Connector on Spectrometer:
Accessory Port
Installation:
See linear transporter handbook
Cables:
Lead through bottom of spectrometer housing
Tubes:
Lead through the tube ports
Sample Compartment Cover:
Unchanged
Alignment:
See linear transporter handbook
43
Lambda 20, Lambda 40 UV/Vis Spectrometers
Temperature Sensor
WARNING
Electrical hazard
To prevent potential injury to yourself and damage to the instrument,
switch OFF all instruments in the system and disconnect them from the
line power supply before you alter, or make any new, electrical
connections.
Installation Overview
NOTE: When connecting the temperature sensor, align the red mark on the plug with the red
mark on the socket.
Pull the collar on the plug back to connect/disconnect the plug. Release the collar to
secure the plug.
44
Connector on Spectrometer:
Temp J10
Installation:
See temperature sensor description
Cables:
Lead through the tube ports
Sample Compartment Cover:
Unchanged
Accessory Installation
Multi-sippers
WARNING
Electrical hazard
To prevent potential injury to yourself and damage to the instrument,
switch OFF all instruments in the system and disconnect them from the
line power supply before you alter, or make any new, electrical
connections.
Installation Overview
Connector on Spectrometer:
Accessory Port
Installation:
See sipper manual
Cables:
See sipper manual
Tubes:
See sipper manual
Sample Compartment Cover:
Unchanged
Spectrometer
Multi-sipper
B0167808
Figure 9 Multi-sipper, electrical connection
45
Lambda 20, Lambda 40 UV/Vis Spectrometers
Autosampler
WARNING
Electrical hazard
To prevent potential injury to yourself and damage to the instrument,
switch OFF all instruments in the system and disconnect them from the
line power supply before you alter, or make any new, electrical
connections.
Installation Overview
Connector on Spectrometer:
Autosampler
Installation:
See autosampler manual
Cables:
See autosampler manual
Tubes:
See autosampler manual
Spectrometer
Autosampler
B0509311
Figure 10 Autosampler electrical connection
46
Accessory Installation
Personal Computer
You can connect a personal computer (PC) to the spectrometer via the Serial Port
(RS 232 port).
Make sure that the Serial Port (RS 232 port) is configured for use with a PC
(default), see Super User method RS232 PORT CONFIG.
To operate the spectrometer via the PC, you additionally require a PerkinElmer UV
software package, for example, UV WinLab, PECSS. Ask your PerkinElmer service
representative for more details.
47
Lambda 20, Lambda 40 UV/Vis Spectrometers
48
Maintenance
5
Maintenance
Maintenance
Obtaining Service
All internal servicing of the instrument should be performed by a PerkinElmer
service representative or similarly authorized person.
Please contact your local PerkinElmer sales or service office to obtain service.
Maintenance procedures that you can perform yourself are described in this chapter.
WARNING
Unauthorized Adjustments and Servicing
Do not attempt to make adjustments, replacements or repairs to this
instrument except as described in the accompanying User
Documentation.
Only a PerkinElmer service representative or similarly trained and
authorized person should be permitted to service the instrument.
Daily Care
The instrument is constructed with high quality components and requires little
maintenance other than to keep it clean and free of dust.
To protect the optical system from dust and fumes, you should keep the sample
compartment cover closed except for when you are carrying out work in the
compartment.
The sample compartment windows should always be installed.
51
Lambda 20, Lambda 40 UV/Vis Spectrometers
You should observe the following care routine to maintain your instrument in good
condition:
•
Immediately clean all spilled materials from the affected area and wipe it dry
with lintless paper or cloth.
If you have to wipe the sample compartment windows, make sure you do not
introduce scratches.
Sample windows are optical components and you should handle them in the
sampe way as high quality cells.
•
Do not leave samples, particularly those given to fuming or evaporation, in the
sample compartment for longer than necessary.
•
If any type of sample handling system is installed and portions of it are left in
the sample compartment (such as a sipper and flowcell), make certain that the
system is cleaned at the end of the working day.
Generally, such systems should be filled with deionized water when left
overnight.
CAUTION
Risk of damage to Optics or Electronics
Take care not to spill liquids onto the spectrometer. Expensive damage
can result to the optics or electronics if liquids are spilled and run
inside the instrument or onto the keyboard.
Cleaning the Sample Compartment
You must clean the sample compartment every time anything is spilled into it. This
preserves the matt black finish, and prevents corrosion and contamination.
The standard sample compartment baseplates have drain holes in them to run off
spilled liquids to the benchtop underneath the instrument. You can place a sheet of
thick filter paper under the instrument, if required.
1. First remove the cell holder or other sample handling accessory from the
sample compartment.
52
Maintenance
2. Using a soft cloth and mild laboratory detergent solution, lightly scrub away all
foreign material.
3. Using a clean cloth dampened with water, rinse the cleaned surfaces
thoroughly.
4. Dry with lint free cloth or tissue.
Sample Compartment Window
Windows are provided with the spectrometer. The window is made of silica and may
be used in the entire spectral range of the spectrometer.
The window seals the sample compartment and thus protects the instrument’s optics
from dust and fuming or aggressive samples.
•
Generally, the window should be installed at all times.
•
The window is an optical component and requires the same care and handling
as cells.
•
You can remove the window to clean it. The frame is magnetic and can be
removed by hand.
Windows are most suitably cleaned by wiping them with a soft cloth moistened
with ethanol.
53
Lambda 20, Lambda 40 UV/Vis Spectrometers
Use and Care of Cells
Cell Handling
A good spectrometer cell is an optical device, forming a part of the optical system of
the instrument with which it is used. It must be accorded the same careful treatment
applied to any optical component. Optical faults of a minor nature, scratches, lint,
fingermarks, etc. on the optical surfaces can easily introduce substantial analytical
errors.
You should observe the following list of cell handling rules to prevent analytical
errors and to achieve utmost precision:
•
Only hold cells by non-optical surfaces, such as the matt finish surfaces.
•
Protect cells from scratches, and never permit them to rub against one another
or against other hard surfaces.
•
Avoid abrasive, corrosive or stain-producing cleaning agents, and make certain
that the exposed surfaces of cells are optically clean.
•
Always wipe the optical surfaces of cells dry and free of fingermarks, using a
soft cloth or cleaning tissue, just before placing them in the cell holder.
•
When measuring cold solutions, always bear in mind that condensation can
form on the optical surfaces.
•
Make certain no bubbles cling to the inner surfaces of the cell, particularly
when handling cold solutions.
•
For maximum precision and accuracy, calibrate and test with cells of the same
type, and always insert cells into the holders with the same orientation.
Pressure Buildup in Cells
If you are using stoppered cells, observe the following rules to prevent the buildup
of internal pressure that could cause the cell to burst:
54
Maintenance
•
Only fill the cell so full that the liquid meniscus is just above the radiation
beam. The remaining air space in the cell is then adequate to compensate for
any slight increase in pressure in the cell during routine operation.
•
If, for analytical reasons, it is necessary to fill the cell completely, insert the
stopper only lightly so that the liquid in the cell has a chance to expand.
•
Do not insert a stopper forcefully into a completely filled cell since this is
likely to cause the cell to burst.
•
When working at higher temperatures, use a drilled stopper (0.4 mm hole) to
allow for expansion in the cell.
Replacing a Lamp
Lamp compartment
Figure 11 Lamp compartment
55
Lambda 20, Lambda 40 UV/Vis Spectrometers
White ceramic
connector
Halogen lamp
assembly
Deuterium lamp
connector
Deuterium lamp
assembly
Lamp energy
attenuator
Figure 12 Inside the Lamp Compartment (Baffle removed)
Halogen Lamp Replacement
If the lamp burns out, or if the bulb becomes blackened after prolonged use, you
should replace the lamp.
Replacement lamp assemblies are provided complete with prealigned mounts (Part
Number B0114620).
56
Maintenance
Figure 13 Prealigned Halogen Lamp (B0114620)
WARNING
Electrical Hazard
Switch off the spectrometer and remove the plug from the electrical
supply before starting with the replacement.
Risk of Burns
If the old lamp was lighted: allow it to cool before proceeding with the
replacement.
UV Radiation
The lamps emit intense radiation which can damage your eyes.
Do not open the lamp compartment when the lamps are on.
Do not gaze into a lighted lamp.
1. Switch off the spectrometer and unplug the line power cord.
2. Remove the lamp compartment cover by pressing down the catch and pushing
the cover to the left.
3. Remove the lamp baffle by slackening the thumbscrew for the deuterium lamp
and lifting the lamp baffle vertically upward.
57
Lambda 20, Lambda 40 UV/Vis Spectrometers
Lamp baffle
Thumbscrew
(deuterium lamp)
4. Carefully pull the white ceramic connector from the rear of the halogen lamp.
White ceramic
connector
Thumbscrew
Halogen lamp
assembly
58
Maintenance
5. Remove the lamp assembly from the bracket by slackening the thumbscrew
and pulling the lamp mount vertically upward.
Save the thumbscrew for use with the new lamp assembly.
6. Unpack the new lamp assembly, taking care to hold it only by the metal mount
to prevent fingermarks on the bulb.
7. Slip the slot at the base of the lamp mount over the stud on the bracket in the
lamp compartment and then secure with the thumbscrew.
8. Carefully push the ceramic connector firmly onto the pins on the base of the
lamp.
9. Wipe the bulb with a soft cloth moistened with alcohol to remove dirt, since
this would otherwise be burned in when the lamp is hot.
10. Replace the lamp baffle using the reverse of the procedure described in step 3.
11. Replace the lamp compartment cover.
This completes the halogen lamp replacement procedure.
Deuterium Lamp Replacement
If the lamp burns out, or indicates falling energy after prolonged use, you should
replace the lamp.
Replacement lamp assemblies are provided complete with prealigned mounts (Part
Number B2000501).
59
Lambda 20, Lambda 40 UV/Vis Spectrometers
Operating Hours
Counter
Figure 14 Prealigned Deuterium Lamp Assembly (B2000501)
NOTE: An operating hours counter is incorporated in the red deuterium lamp lead.
By means of a gap between the two display bars it is possible to read off the number
of hours that the lamp has been in operation.
One scale division corresponds to approximately 100 hours.
WARNING
Electrical Hazard
Switch off the spectrometer and remove the plug from the electrical
supply before starting with the replacement.
Risk of Burns
If the old lamp was lighted: allow it to cool before proceeding with the
replacement.
UV Radiation
The lamps emit intense radiation which can damage your eyes.
Do not open the lamp compartment when the lamps are on.
Do not gaze into a lighted lamp.
1. Switch off the spectrometer and unplug the line power cord.
2. Remove the lamp compartment cover by pressing down the catch and pushing
the cover to the left.
3. Remove the lamp baffle by slackening the thumbscrew for the deuterium lamp
and lifting the lamp baffle vertically upward.
60
Maintenance
Lamp baffle
Thumbscrew
(deuterium lamp)
4. Unplug the deuterium lamp connector from the terminal board by squeezing in
the two lugs at each side of the connector and carefully pulling the connector
vertically upward.
Deuterium lamp
connector
Deuterium lamp
assembly
5. Remove the lamp assembly from the bracket by slackening the thumbscrew
and pulling the lamp mount vertically upward.
Save the thumbscrew for use with the new lamp assembly.
61
Lambda 20, Lambda 40 UV/Vis Spectrometers
6. Unpack the new lamp assembly, taking care to hold it only by the metal mount
to prevent fingermarks on the lamp window.
7. Slip the slot at the base of the lamp mount over the stud on the bracket in the
lamp compartment and then secure with the thumbscrew.
8. Plug the deuterium lamp connector into the socket.
NOTE: The socket in the lamp compartment is asymmetric; the deuterium lamp connector can
be inserted in one direction only. Make certain that the connector is the right way
round before inserting it. Never attempt to insert the connector by force.
9. Wipe the lamp window with a soft cloth moistened with alcohol to remove dirt,
since this would otherwise be burned in when the lamp is hot.
10. Replace the lamp baffle using the reverse of the procedure described in step 3.
11. Replace the lamp compartment cover.
This completes the deuterium lamp replacement procedure.
Lamp Energy Attenuator
An attenuator is located in the lamp compartment between the deuterium lamp and
the beam entrance slit.
If required you can decrease or increase the energy by placing the attenuator into, or
taking the attenuator out of, the beam.
The attenuator is set at the factory, normally in the out position.
62
Maintenance
WARNING
Electrical Hazard
Switch off the spectrometer and remove the plug from the electrical
supply before starting with the replacement.
Risk of Burns
If the old lamp was lighted: allow it to cool before proceeding with the
replacement.
UV Radiation
The lamps emit intense radiation which can damage your eyes.
Do not open the lamp compartment when the lamps are on.
Do not gaze into a lighted lamp.
Operate the attenuator as follows:
1. Open the lamp compartment.
2. Remove the lamp baffle by slackening the thumbscrew for the deuterium lamp
and lifting the lamp baffle vertically upward.
Lamp baffle
Thumbscrew
(deuterium lamp)
3. Loosen the thumbscrew holding the attenuator in place.
63
Lambda 20, Lambda 40 UV/Vis Spectrometers
Deuterium lamp
assembly
Lamp energy
attenuator
4. Slide the attenuator downwards into the beam.
5. Tighten the thumbscrew.
6. Follow the above procedure in reverse to slide the attenuator out of the beam.
7. Replace the lamp baffle using the reverse of the procedure described in step 2.
8. Close the lamp compartment.
Lamp Alignment Procedure
Due to the prealigned mounts, the alignment of lamps after installation is generally
so good that further alignment is not required.
64
Maintenance
Changing Fuses
WARNING
Electrical hazard
To prevent potential injury to yourself and damage to the instrument,
switch OFF all instruments in the system and disconnect them from the
line power supply before you alter, or make any new, electrical
connections.
The fuses are located in a fuse holder at the rear of the instrument:
Fuse Holder
Figure 15 Rear view, Fuse Holder
1. Switch off the instrument and remove the line power cord from the electrical
supply.
2. Squeeze the two lugs at each side of the fuse holder and gently pull out.
Fuse Holder
65
Lambda 20, Lambda 40 UV/Vis Spectrometers
3. Replace the spent fuse with a new one of the same type and rating:
Voltage
Standard
100 V – 120 V
6.3 A slow-blow
210 V – 240 V
3.15 A slow-blow
NOTE: The module has two fuses.
4. Replace the fuse holder.
Align the lug at the bottom of the fuse holder with the slot in the socket. A
click is heard as each lug snaps into place.
NOTE: If you use the correct fuses but the instrument still does not work correctly, or the
fuses blow repeatedly, contact your PerkinElmer office or representative.
Maintaining the Internal Printer
The internal printer needs no special maintenance. You only need to:
•
Change the printer paper
•
Change the printer ribbon
when necessary.
Changing the Printer Paper
1. Lift off and remove the old paper roll.
2. Replace with a new paper roll.
3. Cut square the end of the paper.
4. Carefully feed the end of the paper into the slot at the top of the printer.
66
Maintenance
5. Press 4 Print to feed the paper through the printer until it appears at the front.
Changing the Printer Ribbon
1. Lift off and remove the paper roll.
2. Push in the catch on the printer cover.
3. Carefully lift out the printer.
4. Gently pull the ribbon cassette forwards to remove.
5. Replace with a new one.
6. Replace the printer and printer cover using the reverse of the above procedure.
67
Lambda 20, Lambda 40 UV/Vis Spectrometers
68
Replacement Parts
6
Replacement Parts
Replacement Parts
Supplies, accessories, and replacement parts can be ordered directly from
PerkinElmer. PE XPRESS, PerkinElmer’s catalog service, offers a full selection of
high-quality ultraviolet, fluorescence, and polarimetry supplies through the Supplies
Catalog for Ultraviolet/Visible and Fluorescence Spectroscopy and Polarimetry.
To place an order, request a free catalog, or ask for information:
If you are located within the U.S., call toll free 1-800-762-402, 8 a.m. to 8 p.m. EST.
Your order will be shipped promptly, usually within 24 hours.
If you are located outside of the U.S., call your local PerkinElmer sales office.
71
Lambda 20, Lambda 40 UV/Vis Spectrometers
Quantity
Item
Part Number
Fuses and Cables
10
3.15 A slow-blow
B0155573
10
6.3 A slow-blow
B0155576
1
RS 232 printer cable
B0166569
Lamps and Windows
1
Deuterium Lamp, prealigned
B2000501
1
Halogen Lamp, prealigned
B0114620
1
Thumbscrew for lamp mount
B0119371
1
Sample Compartment Window
B0098757
Cells and Cell Holder
Cells see actual price list
1
Single Cell Holder
B0505071
5
Paper Roll for internal printer
B0508751
1
Ribbon for internal printer
B0508752
Miscellaneous
72
System Description
7
System Description
System Description
Features
Keyboard and
Display Cover
Lamp compartment
Sample compartment
Power switch
Connector panel
Figure 16 Lambda 20, 40 Spectrometer Features
Optical System Lambda 20
The Lambda 20 UV/Vis Spectrometer features an all-reflecting optical system. The
optical components are coated with silica for durability. A holographic grating is
used in the monochromator.
The optical system is depicted schematically in Figure 17.
The monochromator is a holographic concave grating with 1053 lines/mm in
the center.
Two radiation sources, a deuterium lamp and a halogen lamp, cover the working
wavelength range of the spectrometer.
75
Lambda 20, Lambda 40 UV/Vis Spectrometers
For operation in the visible (Vis) range, mirror M1 reflects the radiation from the
halogen lamp onto source mirror M2. At the same time M1 blocks the radiation
from the deuterium lamp.
For operation in the ultraviolet (UV) range, mirror M1 is raised to permit radiation
from the deuterium lamp to strike source mirror M2.
Source change is automatic during monochromator slewing.
Radiation from the source lamp is reflected from source mirror M2 through an
optical filter on the filter wheel assembly.
A stepping motor drives the filter wheel to be in sychronization with the
monochromator.
Depending on the wavelength being produced, the appropriate optical filter is
located in the beam path to prefilter the radiation before it enters the
monochromator.
Filter change is automatic during monochromator slewing.
From the optical filter the radiation passes through the entrance slit (Slit 1) of the
monochromator.
The radiation is dispersed at the grating to produce a spectrum. The rotational
position of the grating effectively selects a segment of the spectrum, reflecting this
segment through the exit slit (Slit 2) to mirror M3.
76
System Description
Halogen
lamp
M = Mirror
M1, M4, and M5 = Plane Mirror
M2 = Toroidal Mirror
M3 = Spherical Mirror
M2
Deuterium
lamp
M1
Filter wheel
Reference
M5
Slit 1
Detector
Lens
M3
Slit 2
Beam Splitter
Lens
Grating
(Monochromator)
M4
Sample
Detector
Figure 17 Optical Path for Lambda 20
The exit slit restricts the spectrum segment to a near-monochromatic radiation beam.
The slits provide a spectral bandpass of 1 nm, or 2 nm.
From mirror M3 the radiation is reflected onto a beam splitter which allows 50% of
the radiation to pass onto plane mirror M4, and reflects 50% of the radiation onto
plane mirror M5.
Mirror M4 focuses the radiation beam in the sample cell.
77
Lambda 20, Lambda 40 UV/Vis Spectrometers
The beam then passes through a convex lens onto the photodiode detector.
Mirror M5 focuses the radiation beam in the reference cell.
The beam then passes through a convex lens onto the photodiode detector.
Optical System Lambda 40
The optical system is depicted schematically in Figure 18.
The Lambda 40 UV/Vis Spectrometer features an all-reflecting optical system. The
optical components are coated with silica for durability. A holographic grating is
used in the monochromator.
The monochromator is a holographic concave grating with 1053 lines/mm in the
center.
Two radiation sources, a deuterium lamp and a halogen lamp, cover the working
wavelength range of the spectrometer.
For operation in the visible (Vis) range, mirror M1 reflects the radiation from the
halogen lamp onto source mirror M2. At the same time M1 blocks the radiation
from the deuterium lamp. For operation in the ultraviolet (UV) range, mirror M1 is
raised to permit radiation from the deuterium lamp to strike source mirror M2.
Source change is automatic during monochromator slewing.
Radiation from the source lamp is reflected from source mirror M2 through an
optical filter on the filter wheel assembly.
A stepping motor drives the filter wheel to be in sychronization with the
monochromator.
Depending on the wavelength being produced, the appropriate optical filter is
located in the beam path to prefilter the radiation before it enters the
monochromator. Filter change is automatic during monochromator slewing.
From the optical filter the radiation passes through the entrance slit (Selectable Slit
1) of the monochromator.
78
System Description
The radiation is dispersed at the grating to produce a spectrum. The rotational
position of the grating effectively selects a segment of the spectrum, reflecting this
segment through the exit slit (Selectable Slit 2) to mirror M3.
Halogen
lamp
M = Mirror
M1, M4, and M5 = Plane Mirror
M2 = Toroidal Mirror
M3 = Spherical Mirror
M2
Deuterium
lamp
M1
Filter wheel
Selectable
Slit 1
Reference
M5
Detector
Lens
M3
Beam Splitter
Selectable
Slit 2
Grating
(Monochromator)
Lens
M4
Sample
Detector
Figure 18 Optical Path for Lambda 40
The exit slit restricts the spectrum segment to a near-monochromatic radiation beam.
The slits provide a spectral bandpass of 0.5 nm, 1 nm, 2 nm and 4 nm.
From mirror M3 the radiation is reflected onto a beam splitter which allows 50% of
the radiation to pass onto plane mirror M4, and reflects 50% of the radiation onto
plane mirror M5.
Mirror M4 focuses the radiation beam in the sample cell.
79
Lambda 20, Lambda 40 UV/Vis Spectrometers
The beam then passes through a convex lens onto the photodiode detector.
Mirror M5 focuses the radiation beam in the reference cell.
The beam then passes through a convex lens onto the photodiode detector.
80
Technical Data
8
Technical Data
Technical Data
Lambda 20
General
Type
Scanning double-beam spectrometer for the
UV/Vis range; with microprocessor and
keyboard
Dimensions
Width: 650 nm
Height: 260 nm
Depth: 560 nm
Mass
26 kg approx.
Power requirements
100 V to 240 V AC, 50/60 Hz; 250 VA
Ambient operating temperature
15 ºC to 35 ºC
Humidity range
20% to 80% relative humidity without
condensation
Technical Standard
In compliance with the requirements for
technical instruments stipulated by
IEC 1010-1/9.90
Radio interference suppression
In compliance with the legal requirements
of the EMC directive 89.336/EEC
(EN 50 081-1; EN 50 082-1)
83
Lambda 20, Lambda 40 UV/Vis Spectrometers
Optics
Beam center height
15 mm above cell holder bottom
Beam cross-section
1 mm slit
2 mm slit
Optical pathlength in
sample compartment
121 mm
Grating (Monochromator)
Holographic concave grating with 1053 lines/mm
in the center
Radiation sources
Prealigned deuterium and halogen lamps
Detector
Photodiodes
(One for the sample beam and one for the
reference beam)
ca. 0.6 mm x 9 mm (width x height)
ca. 1 mm x 9 mm (width x height), at
focal point of sample and reference
beam in sample compartment
Abscissa
84
Wavelength range
190 n to 1100 nm;
0 nm for alignment purposes
Wavelength accuracy
±0.3 nm
Wavelength reproducibility
±0.1 nm
Spectral bandwidth
1 nm or 2 nm (fixed slit)
Lamp change
Automatically at 326 nm
(selectable over the whole wavelength
range, see Super User Factory
Configuration)
Scan speeds
7.5, 15, 30 , 60, 120, 240, 480, 960,
1920 and 2880 nm/min
Technical Data
Ordinate
Photometric range
Transmission 0% to 100%
Absorbance –6.000 to 6.000 (display range)
1 to 9999 (concentration units)
Photometric accuracy
Absorbance ±0.003
(measured at Absorbance = 1 at 440 nm, 546.1 nm and
630 nm with NIST 930 filters)
Absorbance ±0.015
(measured at Absorbance = 1, at 257 nm and 350 nm
with potassium dichromate solution*)
Stray radiation
Transmission < 0.02%
(at 220 nm, 340 nm and 370 nm)
Absorbance > 2
(measured at 200 nm with potassium chloride solution†
against distilled water)
Baseline linearity
1 nm slit:
2 nm slit:
Absorbance ±0.001
Absorbance ±0.0005
(corrected: 200 nm to 100 nm, scan speed 240 nm/min,
smooth 2)
Baseline noise
1 nm slit:
Absorbance < 0.00008 RMS,
Absorbance < 0.0003 peak-to-peak
3 min at absorbance = 0, wavelength 500 nm and
response 2 s)
*
†
β(K2Cr2O7) = 60.06 µg/mL ±0.5% in sulfuric acid c(H2SO4) = 0.005 mol/L
β(KC1)= 12 mg/mL ±0.5%
85
Lambda 20, Lambda 40 UV/Vis Spectrometers
Baseline stability
(drift)
Absorbance < 0.0003 per hour
(500 nm, after warmup)
Data Output
Digital port
One RS 232 C interface (serial), for connecting a printer or
PC; optional second RS 232 C interface
Display
Information, parameters and entries are shown on a two line
vacuum fluorescence display with 20 alphanumeric
characters per line
Methods
Types
86
Timedrive, Scan, Wavelength
Program, Concentration Analysis with
factor and with Calibration
Technical Data
Lambda 40
General
Type
Scanning double-beam spectrometer for the
UV/Vis range; with four selectable slit
widths, microprocessor and keyboard
Dimensions
Width: 650 nm
Height: 260 nm
Depth: 560 nm
Mass
26 kg approx.
Power requirements
100 V to 240 V AC, 50/60 Hz; 250 VA
Ambient operating temperature
15 ºC to 35 ºC
Humidity range
20% to 80% relative humidity without
condensation
Technical Standard
In compliance with the requirements for
technical instruments stipulated by
IEC 1010-1/9.90
Radio interference suppression
In compliance with the legal requirements
of the EMC directive 89.336/EEC
(EN 50 081-1; EN 50 082-1)
87
Lambda 20, Lambda 40 UV/Vis Spectrometers
Optics
Beam center height
15 mm above cell holder bottom
Beam cross-section
0.5 mm slit ca. 0.25 mm x 7 mm (width x height)
1 mm slit ca. 0.6 mm x 7.5 mm (width x height)
2 mm slit ca. 1 mm x 7.5 mm (width x height)
4 mm slit ca 2 mm x 7.5 mm (width x height),
at focal point of sample and reference beam in
sample compartment
Optical pathlength in
sample compartment
121 mm
Grating (Monochromator)
Holographic concave grating with 1053 lines/mm
in the center
Radiation sources
Prealigned deuterium and halogen lamps
Detector
Photodiodes
(One for the sample beam and one for the reference
beam)
Abscissa
88
Wavelength range
190 nm to 1100 nm;
0 nm for alignment purposes
Wavelength accuracy
±0.3 nm
Wavelength reproducibility
±0.1 nm
Spectral bandwidth
0.5 nm, 1 nm, 2 nm, 4 nm
(selectable fixed slit widths)
Technical Data
Lamp change
Automatically at 326 nm
(selectable over the whole wavelength
range, see Super User Factory
Configuration)
Scan speeds
7.5, 15, 30 , 60, 120, 240, 480, 960,
1920 and 2880 nm/min
Ordinate
Photometric range
Transmission 0% to 100%
Absorbance –6.000 to 6.000 (display range)
1 to 9999 (concentration units)
Photometric accuracy
Absorbance ±0.003
(measured at Absorbance = 1 at 440 nm, 546.1 nm and
635 nm with NIST 930 filters)
Absorbance ±0.015
(measured at Absorbance = 1, at 257 nm and 350 nm
with potassium dichromate solution*)
Stray radiation
Transmission < 0.02%
(at 220 nm, 340 nm and 370 nm)
Absorbance > 2
(measured at 200 nm with potassium chloride† solution
against distilled water)
Baseline linearity
2 nm slit:
Absorbance ±0.0005
(corrected: 200 nm to 100 nm, scan speed 240 nm/min,
smooth 2)
*
†
β(K2Cr2O7) = 60.06 µg/mL ±0.5% in sulfuric acid c(H2SO4) = 0.005 mol/L
β(KC1)= 12 mg/mL ±0.5%
89
Lambda 20, Lambda 40 UV/Vis Spectrometers
Baseline noise
2 nm slit:
Absorbance < 0.00006 RMS,
Absorbance < 0.0002 peak-to-peak
3 min at absorbance = 0, wavelength 500 nm and
response 2 s)
Baseline stability
(drift)
Absorbance < 0.0003 per hour
(500 nm, after warmup)
Data Output
Digital port
One RS 232 C interface (serial), for connecting a printer or
PC; optional second RS 232 C interface
Display
Information, parameters and entries are shown on a two line
vacuum fluorescence display with 20 alphanumeric
characters per line
Methods
Types
90
Timedrive, Scan, Wavelength
Program, Concentration Analysis with
factor and with Calibration
Translations of
Warnings
9
Translations of Warnings
Translations of Warnings
This annex contains translations of the warnings used in this handbook.
93
Lambda 20, Lambda 40 UV/Vis Spectrometers
94
Translations of Warnings
95
Lambda 20, Lambda 40 UV/Vis Spectrometers
96
Translations of Warnings
97
Lambda 20, Lambda 40 UV/Vis Spectrometers
98
Translations of Warnings
99
Lambda 20, Lambda 40 UV/Vis Spectrometers
100
Translations of Warnings
101
Lambda 20, Lambda 40 UV/Vis Spectrometers
102
Index
10
Index
Index
A
D
Accessory Connections, 41
Accessory Connector Panel, 39
Accessory Installation, 39
Autosampler, 46
General (accessory installation), 39
Linear Transporter, 43
Multi-sippers, 45
Personal Computer, 47
Temperature Sensor, 44
Autosampler, 46
Deuterium Lamp Replacement, 59
B
Internal Printer
Changing the Printer Paper, 66
Changing the Printer Ribbon, 67
Maintaining, 66
Basic Installation, 23
Connecting to the Electrical
Supply, 28
Equipment Provided, 26
Laboratory Requirements, 23
Overview (basic installation), 23
Printer, 35
Single Cell Holder, 29
System Configuration, 27
Unpacking and Inspection, 25
C
Cleaning the Sample Compartment,
52
Connecting up the Printer
Configuring an External Printer, 36
F
Fuses
Changing, 65
H
Halogen Lamp Replacement, 56
I
L
Lambda 20
Optical system, 75
Technical data, 83
Lambda 40
Optical system, 78
Technical data, 87
Lamp Alignment, 64
Lamp Energy Attenuator, 62
Linear Transporter, 43
M
Maintenance, 51
Changing Fuses, 65
105
Lambda 20, Lambda 40 UV/Vis Spectrometers
Cleaning the Sample Compartment,
52
Daily Care, 51
Maintaining the Internal Printer, 66
Obtaining Service, 51
Replacing a Lamp, 55
Use and Care of Cells, 54
Multi-sippers, 45
P
Personal Computer, 47
Preface, 19
Documentation, 20
Preparing the Working Area, 23
Pressure Buildup in Cells, 54
IEC 1010 Compliance, 8
UL Compliance, 8
UV Radiation, 14
Setting up the Printer, 35
Connecting an External Printer, 35
Single Cell Holder, 29
Aligning, 31
Fine Alignment, 33
Installing, 30
Minimum Volume Applications, 34
System Configuration, 27
System Description, 75
Features, 75
Optical System Lambda 20, 75
Optical System Lambda 40, 78
T
R
Replacement Parts, 71
Replacing a Lamp, 55
S
Safety information
Electromagnetic Compatibility
(EMC), 10
Safety Information, 7
CSA Compliance, 8
Electrical Protection, 8
Electrical Safety, 8
Environment, 12
Graphic Symbols Used on the
Instrument, 14
106
Technical Data, 83
Lambda 20, 83
Lambda 40, 87
Temperature Sensor, 44
Translations of Warnings, 93
U
Unpacking and Inspection, 25
Use and Care of Cells, 54
W
Warnings
Translation, 93
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