Tower Performance, Inc.'s Vibration Switches - Murphy



VS2 Vibration Switches manufactured by Frank W. Murphy feature:



Tower Performance, Inc.'s VS2 Series vibration switches, manufactured by Frank W. Murphy, are shock sensitive mechanisms for shutdown of engine or electric motor powered equipment, designed to prevent protection from damaging shock/vibration. As with any precision machine component, proper selection, installation, maintenance and operating procedures are imperative for long life and trouble-free service.

The VS2 Series vibration switches are ideal for use on engines, pumps, compressors, heat exchangers and pumping units. They can be used anywhere shutdown protection from damaging shock/vibration is desired. Switches are field adjustable to sensitivity required in each application. The VS2 series switches have a weatherproof case. There is an Explosion- proof model for hazardous locations.

The basic operation of the VS2 switches is pushing a reset button which moves the tripping latch into a magnetically held position. A shock/vibration will move the magnet beyond this holding position, thus freeing the spring loaded tripping latch to transfer the contacts and shutdown the machinery.


Tower Performance, Inc.'s Vibration Switches - PMC/BETA

440 Series Vibration Switches manufactured by PMC/BETA feature:


Tower Performance, Inc.'s 440 Series vibration switches, manufactured by PMC/BETA, offer many of the capabilities of remote monitor systems at one-third the cost. As with any precision machine component, proper selection, installation, maintenance and operating procedures are imperative for long life and trouble-free service.

The 440 Series vibration switches are an excellent early warning of machine deterioration. The switches sense the causes of excessive machine vibration and machine failure. The major causes are: imbalance of a rotating member (about 40% of the time); misalignment (15%); defective bearings (15%); and defective belts (15%). The 440 series vibration switches respond to destructive vibration by shutting down the machine when the vibration trip level is exceeded, preventing catastrophic damage and extensive repairs and downtime. A solid state crystal is utilized which provides an electrical output when it is deformed by vibrating forces. The output is electronically converted to a signal proportional to velocity. This signal is compared to a preset limit and triggers a solid state relay if the limit is exceed. There are no moving parts in the 440 vibration switches.


Tower Performance, Inc.'s Vibration Switches - Robertshaw

Vibraswitches manufactured by Robertshaw feature:



Tower Performance, Inc.'s Vibraswitch vibration switches, manufactured by Robertshaw, protect rotating and reciprocating machinery from extensive amage resulting from mechanical malfunction. Model 366 vibration switches are most commonly used in cooling towers. There is also an explosion proof model available, the 365 Vibraswitch. As with any precision machine component, proper selection, installation, maintenance and operating procedures are imperative for long life and trouble-free service.

When the vibration level of a VIBRASWITCH protected machine exceeds normal by a pre-selected amount, an internal switch closed, actuating either an audible warning system or a shutdown circuit before costly damage occurs. Failing bearings, broken blades and similar malfunctions cause increased imbalance or high frequency vibration detectable with the VIBRASWITCH. It is designed for maintenance-free service in permanent installations where general purpose weather- resistant enclosures are required. When the vibration level of a VIBRASWITCH protected machine exceeds normal by a pre- selected amount, an internal switch closed, actuating either an audible warning system or a shutdown circuit before costly damage occurs. Failing bearings, broken blades and similar malfunctions cause increased imbalance or high frequency vibration detectable with the VIBRASWITCH. It is designed for maintenance-free service in permanent installations where general purpose weather-resistant enclosures are required.

The VIBRASWITCH is an acceleration sensitive instrument that measures the total acceleratory shock present on the machine. Acceleration is a vibration characteristic of prime importance in cases of mechanical failure on reciprocating or rotating machinery. Acceleration is directly related to the shock forces (impact) acting on a machine - thus the VIBRASWITCH offers a valid measurement of the destructive forces acting on the machine.


Tower Performance, Inc.'s Vibration Switches - Metrix




Vibralert 5550 manufactured by Metrix feature:



Tower Performance, Inc.'s Model 5550 Series vibration switches, manufactured by Metrix Instrument Co., are designed to meet all requirements for mechanical switches in a single, affordable package. The 5550 provides economical vibration protection for low to medium speed machinery. An inertia sensitive mechanism activates a snap-action switch with SPDT output contacts if the vibration exceeds an adjustable set point. As with any precision machine component, proper selection, installation, maintenance and operating procedures are imperative for long life and trouble-free service.

Specifications:

Function: Armature mechanism trips on high vibration and operates snap action switch.
Frequency Range: 0 to 3600 RPM
Set Point Adjust: 0 to 100% of range. External set point adjustment.
Reset: Local reset, plus optional remote reset electrical recoil.
Start Delay: Applying reset coil voltage at startup holds mechanism from tripping for 20-30 seconds, after which the switch is automatically activated. Requires electric reset option.
Temperature Limit: -400 to +700 C (-400 to +158 F)
Enclosure: Cast Aluminum Alloy 413
Environmental Rating: NEMA 4, IP 65 & CE mark standard. Optional NEMA 4X.
Weight: 1.8 kg (4.0 lbs)

The Model 5550 contacts can be used to activate an alarm or initiate equipment shutdown. The housing is weatherproof with an optional NEMA 4X or hazardous area rating. Electrical (remote) reset with startup time delay and a second set of SPDT output contacts to accommodate DPDT needs (e.g. separate trip and trip light circuits) are available.

Baseplates are available to accommodate most previous models, including other manufacturers, which makes an easy retrofit.

Please Contact
Jalene Fritz
(800) 314-1695
Fax: (970) 278-4034
jfritz@towerperformance.com

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