General Installation
Vibrex 2000 and Vibrex 2000 Plus User Guide 51
• The user can check for an symmetric loading on the propeller by
dynamically tracking the propeller with the Strobex. If the user can
discount the propeller as a source of any vibration, the only way to
correct the problem is to examine the crank shaft.
• There are several commonly used locations on flat opposed engines.
Because of differences in cowling, baffling, and accessory sections,
make sure that the transducer is mounted in such a way that the
engine can get enough air for cooling during its run-up.
Velocimeter Brackets -
Generally the brackets supplied in the
application kits are adequate for general use.
4.4.2 Photocell System
The operational end of the Vibrex 2000 or Vibrex 2000 Plus photocell
system is the Banner photocell probe (from now on called the photocell).
This unit is self-contained and uses a visible red light (650 nm) from a
light-emitting diode (LED) triggered by a retro-reflective target. This
light reflection sends a one-per-revolution pulse to the Vibrex unit for
frequency-and-balance phase measurement.
Photocell Range -
The effective range of the photocell is 3 in. to
approximately 7 ft. For the best results, place the photocell approximately
2 ft from its companion retro-reflective target.
Getting Started -
The photocell receives power from the Vibrex unit.
Turn the Vibrex unit on and press the following keys (in this sequence):
PROPELLER BALANCE, START, START
These key strokes activate the photocell system. Make sure to activate the
system before placing the retro-reflective target on the rotating object.
To Next Page
Loading...
Need help?
General
