08/30178569 DC : 0
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
BS ISO 27892 - VACUUM TECHNOLOGY - TURBOMOLECULAR PUMPS - MEASUREMENT OF RAPID SHUTDOWN TORQUE
Hardcopy , PDF
02-28-2010
English
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Destructive test methods for turbomolecular pumps
5.1 General
5.2 Items to be checked
5.3 Test conditions for burst and crash (destruction of rotor
body and rotor blades)
5.3.1 Destructive test method (burst)
5.3.2 Torque cell
5.4 Destructive test method
5.4.1 Destructive test method A
5.4.2 Destructive test method B
5.5 Destructive test procedures
5.6 Destructive test method "crash" (destruction of rotor/stator
blades)
6 Report of destructive test results for both burst and crash
6.1 Destructive rotational speed
6.2 Destruction state of rotor, rotor blades and pump case
6.3 Results of destructive torque measurement
6.4 State of pump case
6.5 Flange rotation after destruction
6.6 Rigidity of test system
Annex A (informative) Details to be stated in technical drawings
and documents
A.1 Common items
A.2 When fixing the pump inlet flange or base with bolts
A.3 When fixing the pump inlet flange with clamps
A.4 When a bellows or damper is fitted on the pump inlet
flange
Bibliography
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