DH Instruments ADCS-601-AF, Руководство по эксплуатации и обслуживанию

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ADCS-601-AF™ OPERATION AND MAINTENANCE MANUAL
© 2005 - 2007 DH Instruments, a Fluke Company Page 108
The FPG8601 readings may also become noisy if the piston is no longer well centered in the
cylinder. This may occur when installing the piston-cylinder or due to back pressure or lack
of lubricating pressure. When this occurs, the piston-cylinder needs to be manipulated to
reestablish the gas film between the piston-cylinder that lubricates them so the piston is
perfectly mobile. When FPG8601 pressure readings are noisy, unless very obvious signs of
contamination are present, always try piston-cylinder manipulation to establish normal
behavior before disassembling and cleaning the piston-cylinder. See Section 6.3.7 for the
procedure to reestablish piston mobility.
Failure to follow each of the FPG8601 piston-cylinder disassembly/assembly steps can
cause permanent damage to essential parts of the FPG8601.
1. Upper mounting post 4 Gimbal ring
2. Piston retaining nut 5. Cylinder
3. Indexing block with 3 mm indexing pin 6. Piston
Figure 46. FPG8601 piston-cylinder assembly in mounting post