Thermo Scientific 61-12N-64P, Руководство по эксплуатации и обслуживанию

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Ramsey Model 61-12N Speed Sensor REC 4374B Page 9
Note:
The pu pose of this ou ti g a a ge e t is to allo the speed se so to float a d a o odate
any slight misalignment of the coupling. Therefore, no resultant bearing stress is applied due to misalignment,
o ill a slight o le of the de i e esult i ele t i al e o s.
Alternate Sensor Location
On installations where the tail pulley or snubbing roll shaft is not accessible and additional pulley must be
installed specifically for the speed sensor. When using an additional pulley for the speed sensor, the following
requirements are essential:
1.
Select the proper pulley diameter to provide a shaft RPM within the range of the speed sensor (at
rated belt speed or over the range of belt speeds that are of concern).
2.
Locate the pulley on the clean side of the return belt to minimize material build up on the pulley.
3.
Install the unit in such a manner as to provide 15 to 30 degrees contact wrap on the pulley. Any
slippage between belt and pulley will decrease the belt scale accuracy.
CAUTION. Unless the installation is consistent with the illustrations shown in Figure 2, Figure 3,
Figure 4, and as described above, the warranty on the device is void.
Figure 4. Mounting Illustration