Malvern Scirocco 2000 User Manual
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Malvern Scirocco 2000 User Manual

Malvern Scirocco 2000 User Manual

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Summary of Contents for Malvern Scirocco 2000

  • Page 1 Scirocco 2000 user manual...
  • Page 3 Scirocco 2000 User Manual MAN0386 Issue 1.0 March 2007...
  • Page 4 © Malvern Instruments Ltd. 2007 Malvern Instruments makes every effort to ensure that this document is correct. However, due to Malvern Instruments’ policy of continual product development we are unable to guarantee the accuracy of this, or any other document after the date of publication. We therefore disclaim all liability for any changes, errors or omissions after the date of publication.

  • Page 5: Table Of Contents

    ....... . . 2-3 Features of the Scirocco 2000 ........2-12...
  • Page 6 Table of Contents Scirocco 2000 Part 2 - Appendices Specification ..........A-1...

  • Page 7: Part 1 - Operator's Guide

    Part 1 - Operator’s Guide...

  • Page 9: Introduction To This Manual Introduction

    Introduction to this manual Introduction This manual covers the operation of the Scirocco 2000 sample dispersion unit: Instrument Model number Scirocco 2000 (stainless steel venturi) ADA2000 Scirocco 2000 (ceramic venturi) ADA2001 Hopper for Scirocco 2000 option DPF2267 This manual is a supplement to the following manuals: Mastersizer 2000 User Manual (termed “the main User Manual”).

  • Page 10: Access To The Instrument

    The following is a list of these people and their responsibilities: Malvern personnel Malvern personnel (service engineers, representatives, etc.) have full access to the dispersion unit and are authorised to perform all service procedures that may require the removal of the covers.

  • Page 11: Assumed Information

    The Mastersizer 2000 optical bench is referred to as “the optical bench” or “the instrument”. The sample dispersion units are referred to in full (“the Scirocco 2000”) or as “the dispersion unit”. The combination of the optical bench, one or more dispersion units and the computer is referred to as “the system”.
  • Page 12 Chapter 1 Introduction to this manual Page 1-4 MAN 0386...

  • Page 13: Hardware Features

    The sole purpose of any sample dispersion unit is to prepare the sample and then deliver it to the optical bench so that it can be measured. The Scirocco 2000 allows the Mastersizer 2000 to be used for particle-in-gas parti- cle sizing (in the majority of cases the gas will be air).

  • Page 14: How The Dispersion Unit Works

    Chapter 2 Hardware features How the dispersion unit works This diagram shows the features of the dispersion unit: ill 7765 The dry powder sample is manually placed in the sample tray with the air supply  and vacuum extraction system connected. When the sample tray is vibrated the sample travels down the tray until it eventually falls into the main feed mechanism.

  • Page 15: How The Dispersion Unit Is Controlled

    “active”. Features of the Scirocco 2000 The illustration below identifies the main features of the dispersion unit: ill 7766...
  • Page 16 Chapter 2 Hardware features  Sample tray area The sample tray area is where the sample is added to the dispersion unit. Sample feeds down the sample tray as it is vibrated. Three sizes of sample tray are available for different applications. More details of the sample tray area are given below. ...
  • Page 17 Micro volume tray – this is designed for pharmaceutical materials where very little material is available. The smallness of the tray removes the temp- tation to overload it. The tray has a single slit width which is recorded in the sample details and in the SOP. Scirocco 2000 Page 2-5...
  • Page 18 Chapter 2 Hardware features This tray is not suitable for samples having broad size distributions unless several repeat measurements are made. Repeat measurement tests need to be carried out to determine the exact number of repeat measurements to give the required standard of repeatability. Small volume tray –...

  • Page 19: Rear Panel

    “accessory comms - in” connector of the second dispersion unit. Caution! A termination plug must be fitted to this connector if this is the only dis- persion unit connected or it is the last dispersion unit in the line. Scirocco 2000 Page 2-7...
  • Page 20 Chapter 2 Hardware features  Air in connector The compressed air line is connected to this. The compressed air is used to disperse the sample. The input range is from 6-8 bar. Caution! The dispersion unit may be permanently damaged if the compressed air line is not clean, dry and free from oil (see the Site Requirements for details).
  • Page 21  Cell windows The cell windows allow the analyser beam of the optical bench to pass through the cell and hence the particle field. The cell windows can be removed to allow clean- Scirocco 2000 Page 2-9...
  • Page 22 Chapter 2 Hardware features ing (the cell window tool used to remove the window is located within the cell holder). The cell windows are delicate and should be treated with caution - refer to the Essentials Manual for details on cleaning these windows. ...
  • Page 23 Warning! The warning symbol near this socket is there to warn that this power socket is switched on and off by computer control. The operator must be aware that this power socket may be powered unexpectedly. Scirocco 2000 Page 2-11...

  • Page 24: Scirocco 2000 With Hopper

    Chapter 2 Hardware features Scirocco 2000 with hopper The hopper instrument is a modified version of the Scirocco 2000, specifically designed for the needs of customers in the cement and bulk chemical industries. Its features are shown below: ill 7397 Changes from the standard Scirocco 2000 are: ...
  • Page 25 Hopper instruments use a larger switcher box. This has a second mains power outlet socket, required for connecting the second vacuum unit used to remove any excess sample from the sample tray after the measurement has finished. Scirocco 2000 Page 2-13...
  • Page 26 Chapter 2 Hardware features Page 2-14 MAN 0386...

  • Page 27: Software Features

    If more than one dispersion unit is con- nected, the system detects all dispersion units connected, but only the dispersion unit that has its cell installed on the optical bench will be “active”. Scirocco 2000 Page 3-1...

  • Page 28: Manually Controlling The Dispersion Unit

     Air pressure control The Scirocco 2000 uses compressed air to transport and suspend the particles of the sample as they pass through the air cell. High air pressure settings can also help break up agglomerates. The air pressure can be controlled up to a pressure of 4 bar.
  • Page 29 Mode area of the dialogue.  Feed rate control The Scirocco 2000 uses a vibrating tray to feed the sample into the dispersion sys- tem. The rate at which sample is fed is governed by the vibration amplitude and the type of tray fitted.
  • Page 30 Chapter 3 Software features A progress bar indicates the state of the air control sequence. The segments have the following meaning: Segment 1 Unit in standby mode Segment 2 Waiting for vacuum confirmation Segment 3 Waiting for air pressure confirmation Segment 4 Not used Segment 5...
  • Page 31 Software features Chapter 3 If an error is not corrected by the above suggestions, contact the local Malvern rep- resentative.  Sample tray and lid indicators These indicators display which sample tray is fitted and whether the lid is open.

  • Page 32: Writing An Sop For The Dispersion Unit

    The SOP Wizard is described in full in the main User Manual. There are ten dialogues in all but here we just describe those which have parameters specific to the Scirocco 2000. These are the Sampler Selection, Sampler Settings and Measurement Cycles dialogues.
  • Page 33 A for a metal venturi and B for ceramic. On older systems this switch was not used; if in doubt, select Original Configuration to disable the ven- turi type check. Contact the Malvern representative if required to switch between the types of venturi.
  • Page 34  Vibration Feed Rate control The Scirocco 2000 uses a vibrating tray to feed the sample into the dispersion sys- tem. The rate at which sample is fed is governed by the vibration amplitude and the type of tray fitted.
  • Page 35 This is then the rate to use in an SOP. Approximate starting Hopper Feed Rates are 40% to 45% for a materials such as cement, but every product is different so the appropriate SOP settings for specific products may differ. Scirocco 2000 Page 3-9...
  • Page 36 Chapter 3 Software features Measurement Cycles dialogue The Measurement Cycles dialogue allows the system to be set up to perform multiple measurements of a sample. It also defines the cleaning sequence used after a measurement has been completed. Excess sample often remains on the tray and has to be removed manually. The Cleaning section of the dialogue enables this excess sample to be fed through the system into the vacuum cleaner.
  • Page 37 0.5% and 6% for a dry dispersion unit. Select the Raise alarm... box to flag when integrated obscuration is out of range. This tab only defines the limits - the Obscuration filtering tab imposes the defined limits. Scirocco 2000 Page 3-11...
  • Page 38 Chapter 3 Software features Note Application Notes available at www.Malvern.com describe the process of method development for dry powder dispersion, including selection of obscuration limits.  Autostart Autostart is used to ensure that no measurements are started until the dispersion is stable.

  • Page 39: Making A Measurement Introduction

    Making a measurement Introduction This chapter describes how to make a measurement using a Scirocco 2000. It cov- ers: Dry powder measurement guidelines. Making a measurement – important differences from the procedure described in Chapter 4 of the main User Manual.

  • Page 40: Making A Measurement

    Too much sample means the measurement is distorted by multiple scattering. Making a measurement Making manual and SOP measurements using the Scirocco 2000 is basically the same as discussed in Chapter 4 of the main User Manual, but with two impor- tant differences:...
  • Page 41 The software will only make a measure- ment when the measured obscuration is between the set obscuration limits. Once the measurement is complete, the results will be saved to a measurement file. Scirocco 2000 Page 4-3...
  • Page 42 Chapter 4 Making a measurement To make a basic SOP measurement: Open the lid to the sample area and adding the sample to the sample tray. Close and lock the lid. Select Measure-Start SOP. A dialogue appears asking you to select an SOP. Select an SOP and press the Open button.

  • Page 43: Part 2 - Appendices

    Part 2 - Appendices...

  • Page 45: Specification

    Automatic via SOPs. Manual via computer operating dialogues. Weight 21.3kg. Dimensions Width: 352mm Height: 332mm Depth: 355mm Power 100-120V / 200-240 V AC, 50/60Hz, 240VA. Maximum particle 2000 microns, depending on particle shape and density. size Scirocco 2000 Page A-1...
  • Page 46 Appendix A Specification Page A-2 MAN 0386...

  • Page 47: Chemical Compatibility

    Chemical compatibility Introduction The Scirocco 2000 is manufactured from materials that are considered to give the widest protection from chemical attack. However, it is important to check that any sample you may use is chemically compatible with the materials that they will come into contact with within the dispersion unit.
  • Page 48 Appendix B Chemical compatibility Page B-2 MAN 0386...

  • Page 49: Regulatory Statements

    Regulatory statements This appendix presents regulatory information. Scirocco 2000 Page C-1...

  • Page 50: Ce Declaration Of Conformity

    Appendix C Regulatory statements CE Declaration of Conformity The CE badge on this product, shown below, signifies conformance to European Commission Directives. ill 8010 Page C-2 MAN 0386...
  • Page 51 2-13 importance of optimising Controlling the accessory Locking handle manually Mains power supply 2-7, 2-11 Dispersion units Making a measurement chaining Manual control Dry Accessory dialogue Manual measurement Dry powder guidelines procedure Measurement Cycles tab 3-10 Scirocco 2000 Page i...
  • Page 52 Index Scirocco 2000 Measurement display Sample tray when appears (hopper instruments) 2-13 Measurement guidelines faults Measurement snaps function 3-12 Measurements indicator manual and SOP micro volume tray 3-1, 4-2 Menu commands overview Micro volume tray selection Model number small volume tray...

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