TA Instruments AR 2000, Operator'S Manual

Page: 6 / 144

AR 2000 Operator's Manual
6
Levelling the Rheometer ............................................................................................................................................... 52
Checking Your System .................................................................................................................................................. 52
Calibrating the Rheometer ........................................................................................................................................... 53
Shut-Down Procedure .................................................................................................................................................. 53
Cleaning the Filter Regulator Assembly ..................................................................................................................... 54
Chapter 6: Measuring Systems .................................................................................................................................. 55
Overview ........................................................................................................................................................................ 55
General Description ...................................................................................................................................................... 55
Geometry Materials ................................................................................................................................................ 55
Stainless Steel .................................................................................................................................................. 55
Aluminium ...................................................................................................................................................... 55
Plastic ............................................................................................................................................................... 56
Cone and Plate ............................................................................................................................................................... 56
Parallel Plate .................................................................................................................................................................. 57
Concentric Cylinders .................................................................................................................................................... 58
Using the Stress and Shear Rate Factors .................................................................................................................... 59
Choosing the Best Geometry ........................................................................................................................................ 60
Cone and Plate/Parallel ........................................................................................................................................ 60
Plate Systems .......................................................................................................................................................... 60
Angles .............................................................................................................................................................. 60
Diameters ......................................................................................................................................................... 60
Material ............................................................................................................................................................ 61
Preventing Solvent Evaporation .................................................................................................................................. 62
Preventing Slippage at Sample/Geometry Interface ................................................................................................. 62
Removing the Air-Bearing Clamp ............................................................................................................................... 63
Attaching a Geometry ................................................................................................................................................... 64
Ensuring that the Sample is Loaded Correctly .......................................................................................................... 65
Chapter 7: Using the Upper Heated Plate ................................................................................................................ 67
Introduction to the Upper Heated Plate ...................................................................................................................... 67
Attaching the Upper Heated Plate to the AR 2000 .................................................................................................... 68
Installing the (Optional) Vortex Air Cooler ......................................................................................................... 70
Configurations for the Cooling Water .................................................................................................................. 72
Connecting the Cooling Control Unit ........................................................................................................... 73
Using Circulating Fluids Other Than Water ............................................................................................... 74
Connecting and Disconnecting the Geometry Holder ....................................................................................... 76