Brookfield RST Rheometer - Manual (Page 61)

Brookfield Engineering Labs., Inc. page 61 Manual No. M14-223
Table of cone/plate measuring systems
Measuring System RCT-25-1 RCT-25-2 RCT-50-1 RCT-50-2 RCT-75-1 RCT-75-2
Shear rate range [s
-1
]
0.06 …
7,800
0.03 …
3,900
0.06 …
7,800
0.03 …
3,900
0.06 …
7,800
0.03 …
3,900
Shear stress range [Pa]
36.7 …
24,400
36.7 …
24,400
4.58 …
3,050
4.58 …
3,050
1.36 …
905
1.36 …
905
Viscosity range [Pa*s]
1)
0.005 …
407,000
0.01 …
814,000
0.0006 …
50,900
0.0012 …
101,000
0.0002 …
15,000
0.0004 …
30,000
Filling quantity [mL] 0.1 0.2 1 2 2.5 5
Shear rate factor K � [s
-1
/RPM]
6.00 3.00 6.00 3.00 6.00 3.00
Schubspannungsfaktor �
‰ [Pa]
12.223 12.223 1.5279 1.5279 0.4527 0.4527
Measuring cone radius R [mm] 12.5 12.5 25 25 37.5 37.5
Angle of measuring cone
! [°]
1 2 1 2 1 2
Cone truncation [
µ
m] 50 50 50 50 50 50
Table of plate/plate measuring systems
(consisting of measuring plate and measuring device ME3-CP/PP)
The following values pertain to a plate distance of 1 mm. For all other plate distances you can easily
calculate K � using the formula:
• K � = (2* ! / 60) * (R / H) R = radius, H = plate distance
Measuring System RPT-25 RPT-50 RPT-75
Shear rate range [s
-1
]
0.013 …
1,700
0.027 …
3,400
0.04
5,100
Shear stress range [Pa]
49 …
32,600
6.2 …
4,070
1.8 …
1.200
Viscosity range [Pa*s]
1)
0.03 …
2,490,000
0.002 …
155,000
0,0004 …
30,700
Filling quantity [mL] 0.5 2.0 4.5
Shear rate factor K �
[s
-1
/RPM] 1.309 2.618 3.927
Shear stress factor
�
‰ [Pa]
16.297 2.037 0.604
Radius of measuring plate R [mm] 12.5 25.0 37.5