Model 368 Pneumatic Vibration Switch

The Robertshaw Model 368 PNEUMATIC vibration switch constitutes the most effective known method of avoiding costly damage due to mechanical malfunction of rotating and reciprocating machinery. In operation, the Model 368 actuates an audible warning system and/or shutdown circuit when vibration level of the vibration switch-PROTECTED equipment exceeds "normal" by a pre-selected amount. vibration switches are widely used in permanent installations throughout the world; this versatile non-electric model requires only air or natural gas for operation.

Being non-electric, Model 368 may be employed in hazardous locations without the usual necessity of an explosion proof housing. This feature also makes the instrument well suited for applications at pipeline compressor stations and on skid-mounted compressors, as well as countless other applications.

The Model 368 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.

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

• EASE OF INSTALLATION - Requires no special training.

• LONG LIFE – Instrument is rugged and durable - no wearing parts.

• EASE OF ADJUSTMENT – Set it and forget it - one adjustment.

• RESET – Choice of remote pneumatic or manual at unit.

• SELF POWERED – Does not require any form of external power to operate.

• LOW COST – Small initial investment with no maintenance costs.

Download the full datasheet

(PDF format)

Ordering Information