Malvern Hydro 2000 G Operation & User’s Manual

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Introduction to this manual Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Access to the instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Assumed information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Where to get help. . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Hydro 2000G/S Page ii MAN 0385 Part 2 - Appendices Specification Hydro 2000G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1 Hydro 2000S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2 Purge air specification (Hydro 2000G) . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2 Chemical compatibility Introduction . . . . . . . . . . . . . . . . . . ...

Introduction This manual describes the operation of the large volume Hydro 2000G and small volume Hydro 2000S sample dispersion units: This manual is a supplement to the following manuals: „ Mastersizer 2000 User Manual (termed “the main User Manual”). „ Mastersizer 2000 Essentials Manual (termed “the Essentials Manual”). This dispersion unit manual focuses on some specific issues of the dispe ...

Page 1-2 MAN 0385 1 Those who are more familiar with particle size analysers may wish to jump straight to Chapter 4 of the main User Manual which gives details on making measure- ments. However, the importance of sample preparation before measurement can- not be overstated so we recommend reading the chapter on sample preparation (Chapter 8 of the main User Manual) as a priority. Access to the instrument Within this ma ...

Chapter 1 Hydro 2000G/S Page 1-3 Assumed information All pictures and text show the Hydro 2000G unless information is specific to the Hydro 2000S. Naming convention Within this manual: „ The Mastersizer 2000 optical bench is referred to as “the optical bench” or “the instrument”. „ The sample dispersion units are referred to in full (e.g. “the Hydro 2000G”) or as “the dispersion unit”. „ The combination of th ...

„ What the dispersion unit does. „ How the dispersion unit works. „ How the dispersion unit is controlled. „ The physical features of the Hydro 2000G in detail. „ The physical features of the Hydro 2000S in detail. What the dispersion unit does The sole purpose of any sample dispersion unit is to prepare the sample a ...

This is the Hydro 2000G: ill 4911 The dispersion unit comprises a tank  that holds one litre of sample/dispersant liquid. A stirrer , controlled from the software, agitates the sample and stops it from settling or separating out. The pump , controlled from the software, forces the sample from the TO CELL port  of the dispersion unit to the flow cell  located in the ...

The dispersion unit is controlled using a single software dialogue with sliders for the pump speed, stirrer speed and ultrasonic power (Chapter 3 has details). When controlled through a Standard Operating Procedure (SOP), the software tells the user what value to set for each parameter. Features of the Hydro 2000G This illustration identifies the main features of the ...

loaded into the optical bench. (i.e. the dispersion unit is at “standby”) „ red if the dispersion unit detects an error. If an error message does not appear on the screen, selecting Configure-Accessory displays the accessory control dialogue which should show the error.  Rear panel The rear panel contains all services and ...

 Tank The tank can hold up to one litre of sample and dispersant for circulation through the cell of the optical bench. Warning! Due to the possible risk of sonication of the blood and its unknown effects, never place fingers in the tank when the ultrasonic probe is in operation. Also, never put fingers in the tank when the pump/stirrer shaft is rotating. Sample and dispersant ...

on cleaning the level sensor. The level sensor must be set to detect different types of dispersant by setting the level sensor threshold. This is done by selecting Configure-Accessories. The Level Sensor Threshold section is shown below: Use the up and down arrows to set the threshold for the dispersant used then click the Apply butto ...

ill 4913 These are the following:  Drain The drain port is the exit point where sample/dispersant leaves the dispersion unit. A warning triangle warns that the contents of the tank are drained from this pipe. The risk depends on the hazardous nature of the dispersants/samples being meas- ured. The drain pipe should not exceed ...

This adjuster alters an internal pressure regulator that will control the rate at which the tank is filled with dispersant. This is always set by the installation engineer but if it’s found that the dispersant pressure has changed (one sign is that the tank takes a long time to fill), alter this adjuster so that a fill tank cycle takes about 20 seconds.  “From cell” pipe This is the ...