Brookfield RST Rheometer Manual de usuario Pagina 61

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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 [µm]
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
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