Monarch Instrument Vibration Strobe - Manual (Page 4)

Figure 1 Display Panel
1
INTRODUCTION
The Vibration Strobe is a truly portable, battery-operated stroboscope that is suited for a wide range
of industrial, institutional, and educational applications, and is able to interface with several of the
Vibration Data Collectors that are currently available. Several interface cables are available. Sturdy
and compact, the strobe can be operated anywhere in the plant or field to permit visual inspection
(freeze motion), and digital measurement of rotary, reciprocating, or linear motions of various
equipment while it is in operation.
The Vibration Strobe has a special “tuning” circuit that allows it to track vibration transducer
(accelerometer) signals. This capability makes it different from general-purpose strobe lights. It
also has a Narrow and Wide Bandwidth filter selection to discriminate fundamentals from harmonics.
The Narrow Bandwidth filter limits the influence of harmonics around the selected frequency,
providing a more stable phase reading.
The Vibration Strobe requires an input signal to synchronize the flash rate with an external source,
typically a vibration transducer in the tracking mode or optical pickup in the external mode. This
signal is applied, using a special cable, to the Input (! pointing into socket) jack connector on the
side of the strobe light. The Vibration Strobe generates a tachometer signal that is on the Output ("
pointing away from socket) jack. Information about the use of these signals is given in other sections
of this manual. Special adapter cables are available to suit several commercially available
Vibration Analyzers.
The Vibration Strobe is ideally suited for:
1. Balancing
2. Inspection of High Speed Rotating Parts
3. Motion Analyses, or Phase Measurement
4. Over speed Trip Tests
5. Online coupling Inspections
The Vibration Strobe can also be used as a highly accurate, remote electronic digital tachometer for
direct measurement of RPM (speed) without special reflective tape or markings. RPM results are
updated and displayed approximately every 1 second on a 5-digit LCD display.
The display panel consists of a backlit liquid crystal display with five alphanumeric digits (see Figure
1). Below the display is a knob that controls the phase shifting, the Mode Selector Switch and the
Bandwidth Switch.
10
REPAIR/SERVICE/PARTS
Repair:
In accordance with the warranty and replacement provisions, the user ordinarily would undertake
no strobe repairs. Possible exceptions involve minor malfunctions, i.e., cables, plugs, and
attachment items.
Assembling the Vibration Strobe is a critical procedure. It should NOT be dismantled. However,
the reflector lens is removable for lamp replacement. Refer to the section on Lamp Replacement
for instructions.
Service:
Notes should be kept regarding field troubles, whether or not any of the equipment is returned at
that time. A brief history or record of symptoms, or of pre-fault behavior is of substantial aid to the
factory. This is especially true of intermittent malfunctions that might call for a schedule of extended
scrutiny at the repair site.
Disposal:
Prior to disposing of this product, the user must remove the sealed lead acid batteries. To do this,
remove the lens as detailed above in lamp replacement, remove the reflector and lamp. This will
expose 4 screws that must be removed so the reflector housing can be dismantled. There are four
additional screws in the case half opposite the input and output jacks that must be removed. The
case halves can now be separated, exposing the batteries. Remove the cables from the batteries and
place tape over the battery terminals to prevent them from shorting. The batteries should be sent to
a recycling center or returned to the factory. The rest of the parts may now be disposed of.
Parts:
The following parts are available for field replacement, and can be ordered directly from
Monarch Instrument.
Model Description
CC-7 Latching Carrying Case for Strobe with provision for accessories
FR-3CE Fast Charger, 115Vac, 50/60Hz (3 hour)
FR-4CE Fast Charger, 230Vac, 50/60Hz (3 hour)
L-1903 Vibration Strobe replacement lamp (flash tube)
50192 Cable, BNC to miniature phone jack, External trigger input