The Model 365A Vibraswitch is an acceleration sensitive instrument that measures the
total peak vibratory shock (destruction forces) present at the point of
measurement. The instrument's explosion proof housing meets Class I,
Division 1, Groups C and D, and Class II, Division 1, Groups E, F and G
hazardous area classifications. It is FM approved and CSA certified. The
instrument provides electrical switch contact closures for on-off control
of alarms and shut-down of machines. Both SPDT and DPDT contact
arrangements are available.
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The set-point is provided with a dial calibrated in 0.1 G divisions. The
instrument has a range of 0 to 4.5 G in a frequency range of 0 to 300 Hz.
The set-point adjustment resolution is 1 G per turn. The Vibraswitch can
be supplied with an electrical reset coil for remote resetting; it is
available for voltages of 24, 48, 120VDC or 120 VAC.
A The Model 365A Vibraswitch is an acceleration sensitive instrument that
measures the total peak vibratory shock (destruction forces) present at
the point of measurement. The instrument's explosion proof housing meets
Class I, Division 1, Groups C and D, and Class II, Division 1, Groups E, F
and G hazardous area classifications. It is FM approved and CSA certified.
The instrument provides electrical switch contact closures for on-off
control of alarms and shut-down of machines. Both SPDT and DPDT contact
arrangements are available.
The set-point is provided with a dial calibrated in 0.1 G divisions. The
instrument has a range of 0 to 4.5 G in a frequency range of 0 to 300 Hz.
The set-point adjustment resolution is 1 G per turn. The Vibraswitch can
be supplied with an electrical reset coil for remote resetting; it is
available for voltages of 24, 48, 120VDC or 120 VAC. A
The Model 366
Vibraswitch is an acceleration sensitive instrument that measures the
total peak vibratory shock (destruction forces) present at the point of
measurement. The instrument is housed in a general purpose,
weather-resistant enclosure meeting NEMA type 4 specs. The cover is ABS
high impact thermoplastic material and the base is aluminum 360 (Cu Free).
The Model 366 is CSA certified. It provides electrical switch contact
closures for on-off control of alarm and / or shut-down of machines. It is
available with SPDT or DPDT contact arrangements.
The set-point is provided with a dial calibrated in 0.1 G divisions. The
instrument has a range of 0 to 4.5 G in a frequency range of 0 to 300 Hz.
The set-point adjustment resolution is 1 G per turn. The Vibraswitch can
be supplied with an electrical reset coil for remote resetting; it is
available for voltages of 24, 48, 120 VDC or 120VAC. A manual reset button
is supplied as standard equipment on all units.
The Robertshaw Model 563A Vibraswitch Electronic Vibration Monitor is a microprocessor based supervisory control system
designed for use with Robertshaw Model 365 or 366 Vibraswitch Vibration
Switch. It may be used with one to eight Vibraswitches and has been
programmed to provide a means of differentiating between valid excessive
vibration and excessive vibration resulting from temporary external
disturbances.
Many machines, during their normal operation, will
suffer occasional short-duration transient shocks, which are external to
the monitored machine. Examples of these disturbances are: Closing of
pipeline check valves on pumping applications; Start-up of additional
pumps on a line; nearby machinery operating - such as hydraulic presses,
etc.. These disturbances may cause a Vibraswitch to "trip out" if the
vibratory level is in excess of its set-point. The Model 563A provides
field settable Monitor Time Delay circuitry that eliminates equipment
shutdown because of these transients and ensures that only a continuous
vibration level which exceeds the set-point of the
Vibraswitch will initiate an alarm and/or shutdown. This Monitor Time
Delay is adjustable, using digital rotary switches, over a range of 0 to
99 seconds.
Nearly all rotating machinery, during its "start-up"
operation, will go through an excessive vibration point which is inherent
to the machine. This vibration level sometimes is higher than the
alarm/shutdown level desired for safe protection. The Model 563A contains
circuitry which provides a Starting Time Delay to disable the Vibraswitches for a period of time to allow the machine to
reach its normal operating speed or condition. After this delay period,
the Model 563A activates the Vibraswitches to provide the necessary
vibration protection. The Start Time Delay is adjustable over a range of 0
to 999 seconds by means of digital rotary switches.
Eight LED indicators, viewable through the window on the instrument door, are provided for visual indication to determine which Vibraswitch detected the excessive vibration and triggered the alarm and/or shutdown.
The Model EURO 366 Vibration Switch is primarily intended for indoor and outdoor hazardous and nonhazardous areas in those
countries requiring ATEX and CE certifications. The EURO 366 employs the
same time proven switch design found in Robertshaw's family of vibration
switches.
The Model EURO 366 Vibration Switch is a vibration sensitive device that protects rotating
and reciprocating machinery from extensive damage resulting from
mechanical malfunction. When the vibration level of a Vibration Switch
protected machine exceeds normal by a preselected amount, the normally
open contacts of an internal switch close and the normally closed contacts
open. This can be used to actuate either an audible warning system or a
shutdown circuit before costly damage occurs Failing bearings, broken
blades and similar malfunctions causes increased imbalance or high frequency vibration detectable with the
Vibration Switch. It is designed formaintenance-free
service in permanent installations.
These Robertshaw Vibraswitch Malfunction
Detectors are acceleration sensitive vibration instruments with electronic
circuitry to provide maximum protection to rotating and reciprocating
machinery due to damages resulting from mechanical malfunctions. Although
identical in outside appearance and dimensionally the same as the existing
Models 365 and 366, these instruments include "built-in" electronic
circuitry for start and/or monitoring time delay functions for the
prevention of false shutdowns resulting from transient vibrations. All
models include provisions for remote reset.
"Start Delay" is often required on machines that start
automatically and exhibit excessive vibration for short periods of time
only during starting. Proper set point adjustment on the Vibraswitch for
adequate protection during normal running conditions may cause the
Vibraswitch to "trip" as the instrument senses these high starting
transient vibrations without the use of "Start Delay." Examples of such
machines are refrigeration compressors and high-speed turbines.
"Monitor Delay" is required on machines that exhibit
excessive vibration of a transient nature which occurs during normal
operation. If a Vibraswitch without monitor delay has it's set point
sufficiently high so as not to trip-out under the transient vibration
levels; inadequate protection would result during the normal running
conditions. Examples of this type of machine include liquid pumps that
experience momentary cavitations resulting in excessive vibration.
The Model 566 can provide 4-20ma output, alarm setpoints, measure acceleration or velocity and is an explosion proof enclosure
The Robertshaw Model 566 Vibration Monitor
is a solid state instrument that encompasses a variety of functions all in
one unit.
Vibration can be monitored in either velocity or
acceleration. The standard ranges are 0 to 1.5 inches/second or 0 to 3
inches/second when sensing velocity and 0 to 5 g's or 0 to 10 g's when
sensing acceleration. A 4-20 mA DC output is provided to drive a 750 ohm
maximum load.
The Model 566 includes two solid state Triacs (2 amp @
120/240 VAC) which can be operated in a N.O. or N.C. configuration. Alarms
are capable of being latched or non latched (ON-OFF). Alarm # 1 has a
monitor time delay adjustable from 0.5 to 15 seconds. LED setpoint
indicators are provided to indicate the alarm condition.
The Model 566 vibration instrument and optional remote
mounted sensor are housed in a weatherproof and explosion proof enclosure.
Note that on the remote sensor unit the connection from
the Model 566 to the remote sensor need only be an ungrounded pair of
twisted wire.
The Robertshaw Model 368 Vibraswitch is a pneumatically powered detector for
use on machines where electrical power is not available. This instrument
is particularly well suited to installation in hazardous (explosive)
areas (even in extreme hazard such as hydrogen atmospheres) since only
compressed air is required for its alarm and/or control operation. It does
not require explosion-proof housings. The instrument is also well suited
for applications at pipeline compressor stations and skid-mounted
compressors since it will operate on either natural gas or compressed air.
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