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Vibration Protection Systems

Robertshaw Vibration Protection Systems - Download overview of products and applications
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Vibration/bearing Monitors and Analyzers - these are meant to measure the acceleration at various frequencies and can be used for early detection of bearing problems or shaft unbalance

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Vibration Overview

Vibration Switches

Vibration Monitors

Model 365 Vibration Switch
The Model 365 vibration switch provides maximum protection for large motors, pumps, compressors, and other rotating equipment by responding to mechanical malfunctions the instant they occur. Failing bearings, bent shafts, broken blades, over-speeding and similar malfunctions cause increased imbalance or high frequency vibration detectable with the model 365 vibration switch. The instrument may be wired to actuate an alarm or cause a shutdown before costly damage occurs. It is designed for maintenance-free service in permanent installations. The vibration switch 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. Newton's second law of motion states that the force exerted on a body is equal to its' mass multiplied by its acceleration: F = MA. Thus the destructive forces acting on a bearing are directly dependent on the acceleration of the masses involved at the shaft which is supported by the bearings. Acceleratory measurements made by the vibration switch are the summation of all the individual accelerations giving a total destructive force acting on the machine - the result is positive protection.
Features & Benefits • Explosion Proof- CSA Certified and FM approved. (Most models.) • Self Powered- Does not require external power to operate (Except remote reset.) • Acceleration Sensitive- Measures destructive forces. • Minimum Maintenance- No moving parts except at trip level. • Continuous Protection- No attention required after installation. • Ease of Installation- Requires no special training. • Long Life- Instrument is rugged and durable-no wear. • Ease of Adjustment- Set it and forget it-one adjustment. • Reset- Remote electrical or manual at unit. • AC or DC- Reset coil options. • O-Ring Shaft Seals Standard	Download the full datasheet (PDF format) Ordering Information

Model 366 Vibration Switch
The Model 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, an internal switch closes, 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 vibration switch. It is designed for maintenance-free service in permanent installations where general purpose weather-resistant enclosures are required. The Model 366 vibration switch 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 vibration switch offers a valid measurement of the destructive forces acting on the machine. Accelerator measurements made by the Model 366 are the summation of all of the individual accelerations giving a total destructive force acting on the machine - the result is positive protection.
Features & Benefits • Acceleration sensitive- Measures total destructive shock, not displacement. • No maintenance- No moving parts except when set-point is exceeded. • Continuous protection- No attention required after installation. • Long life- Instrument is rugged and durable - no wearing parts. • Reset- Choice of remote electrical or manual at unit. • Self powered- Does not require any form of external power to operate.	Download the full datasheet (PDF format)

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