Brookfield DV-III Rheometer - Manual (Page 40)

Brookfield Engineering Laboratories, Inc. Page 40 Manual No. M/98-211-A0701
The calculated parameters for this model are:
Flow Index (no units)
Consistency Index (cP or mPa•s)
Confidence of Fit (%)
5. IPC Paste Analysis
This method is intended to calculate the Shear Sensitivity Factor and the 10 RPM Viscosity value
of pastes. A prime example of its use is in the solder paste industry, thus the name IPC (Institute
for Interconnecting and Packaging Electronic Circuits).
The Paste equation is:
η =
kR
n where:
η
= Viscosity (cP)
kR = Consistency Multiplier
kR = Rotational Speed (RPM)
R
n = Shear Sensitivity Factor
The calculated parameters for this model are:
Shear Sensitivity Factor
(no units)
10 RPM Viscosity (cP or mPa•s)
Confidence of Fit (%)
V. OPTIONS
The DV-III+ Options Menu allows the user to execute temperature control commands and special
time tests. General rheometer settings are also accessed from this menu. The Options Menu is
shown in Figure 61. Selections are made by pressing the appropriate number key.
Figure 61
V.1 Set Up
1. Change the units of temperature. The change is selected by pressing the1 key. The change must
be confirmed by pressing the ENTER key.
2. Change the units of viscosity and shear stress (CGS System: cP, D/cm 2 ) (SI System: mPa•s, N/
m 2 ).
The change is selected by pressing the 2 key. The change must be confirmed by pressing the
ENTER key.