View and Download Malvern Zetasizer Nano series user manual online. Chapter 2 Software overview The Malvern Zetasizer software controls the system.

• Visco 88 User Manual MAN0378 Issue 1.0 October 2006. • © Malvern Instruments Ltd. 2006 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. • Where to get help What is the Visco 88?.2-1 Introduction.

• Table of Contents Visco 88 Other tasks.4-1 Introduction. • Visco 88 Table of Contents Part 2 - Appendices Health and safety. A-1 General warnings. • Table of Contents Visco 88 Page iv MAN 0378. • Part 1 - Operator’s Guide. • About this manual This manual covers the operation and maintenance of the Visco 88 instrument. This is a portable, easily-handled viscometer for laboratory, plant and field use.

It can be used standalone or connected to a computer running the Bohlin software. • Where to get help Help desk All queries regarding the system should initially be directed to the local Malvern Instruments representative. Please quote the following information: The model and serial number of the instrument (located with the connectors under the flap on the back of the casing). • In addition to standalone use, the Visco 88 can be controlled by a connected com- puter. The computer can run the Bohlin software which allows pre-programmed measurements, as well as data processing and graphic layout of results. Use of this software is described in Chapter 5. • Chapter 2 What is the Visco 88?

Operating principles The viscometer is a constant speed motor with a torque detection system. The sample to be tested is placed in the gap between upper and lower measuring sys- tems. The instrument uses a controlled shear rate. That is, it applies a shear rate (rota- tional speed) and measures the resultant shear stress (torque) needed to maintain the shear rate. • What is the Visco 88? Chapter 2 The main components are: Stand – keeps the instrument stable. The instrument does not have to be used  while placed in the stand.

The viscometer can be held in the hand and the measuring system just placed in the sample to be measured. • Chapter 2 What is the Visco 88? Digital display – this shows the status of the system and measurement data  for torque, speed, viscosity, shear stress, shear rate and temperature. System status parameters are shown as follows: Low bat.

• What is the Visco 88? Chapter 2 Measuring systems The sample is placed between two measuring systems. There are two types of measuring system, cup and bob and cone and plate/parallel plate. Timing solution serial number. Cup and bob is the default, the others are available as an option. • Chapter 2 What is the Visco 88? SYSTEM Estimated switch Inner Outer sample position cylinder cylinder Designation volume 14 mm 15.4 mm C14 DIN53019 10ml 25 mm 27.5 mm C25 DIN53019 15ml 30 mm 33.0 mm C30 DIN53019 17ml 14 mm. • What is the Visco 88?

Chapter 2 ill 7726 Cone and plate Parallel plates Cone and plate (CP) systems are defined in terms of cone angle and diameter. The cone is always the upper system. For example, a CP2.5°/30 cone has an angle of 2.5°. • Chapter 2 What is the Visco 88?

Its components are: Clamp – slide this onto the column before the viscometer clamp as the   lower plate must be below the viscometer. Lower measuring system (plate) – this can incorporate temperature con- .

• Temperature control The viscometer does not have any integrated system of temperature control, but external temperature controllers can be used as follows: Cup and bob systems – Malvern can supply a thermal jacket as shown  below to fit over cup and bob geometries. This allows use of an external fluid circulator to regulate the sample temperature when using the DIN standard or wide gap configurations. • Chapter 2 What is the Visco 88? Connections The flap on the back of the viscometer gives access to the connectors: ill 7727 The ports are: Analogue output – the torque reading can be output to an external recorder .

• What is the Visco 88? Chapter 2 Power supply and battery operation The instrument is powered by one of the following: The mains power socket using an AC adapter. Aqua air v100 pressure tank manuals. Do not use any AC adapter or cable other than those supplied.

• Chapter 2 What is the Visco 88? Page 2-12 MAN 0378. • Optimising the measuring system – this is optimising the torque to take account of the viscosity of the sample. Starting the measurement. Completing the measurement – this is described in detail in Chapter 6. Closing down the viscometer. Work through each step in turn.