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R7B7
R7B7 (R7 Sleeve B7 Bob)
R7B7 being attached to M3600 Automatic Rheometer
B7 Bob
M3600 Measurement Range Graph
The R7 Sleeve 7 and B7 Bob combination (R7B7) enhances low viscosity measurements for the M3400 Dial-Reading Viscometer and the M3600 Automatic Rheometer.
A Bob and Sleeve for Low Viscosity Measurements
Combine the R7 Sleeve and the B7 Bob to make the R7B7, which makes low-viscosity measurements 4 times better, to about ±0.1 cP at 300 RPM.
The R7B7 setup is available for the M3400 Dial-Reading Viscometer and the M3600 Automatic Rheometer.
If temperature control is desired for a test, an optional heater cup is available. The heater cup for the R7B7 is larger than the standard heater cup.
Click here to see the standard M3410 and M3610 heater cups.
| Rotor Radius: 2.9108 cm |
| Bob Radius and Height: 2.7264 x 7.6 cm |
| Shear Gap in Annulus: 0.1844 cm |
| Radii Ratio, R1/R0: 0.9367 |
| Maximum Temperature: 212°F (100°C) |
| Minimum Temperature: Ambient (20°F or -6°C with Chiller) |
| Shear Stress Range (dynes/cm2: 1~2,000 (standard) |
Shear Rate Range
| Shear Rate Constant k3, sec-1 per RPM: | 1.7023 | |
| Shear Rate Range, sec-1 Y = k3N: | ||
| N = 0.01 RPM | 0.017 | |
| N = 0.1 RPM | 0.17 | |
| N = 1 RPM | 1.7 | |
| N = 10 RPM | 17 | |
| N = 100 RPM | 170 | |
| N = 600 RPM | 1021 (maximum 511 recommended) |
- A B7 bob and an R7 sleeve (R7B7) that enhances low-viscosity measurements.