The type 3171 Ex vibration switch is a low-cost, vibration-sensitive switch for the protection of rotating and reciprocating machinery in hazardous areas.
It is adjustable to operate above the machine’s normal running levels of vibration, activating machine shut-down circuits and/or alarms.
Once operated the internal micro switch remains latched until reset.
Key Benefits
Ease of installation on new or existing plant and machinery
Robust for Industrial Environments
Manual reset
SPCO or DPCO Contacts
Must be vertically mounted as in diagram below – sensitive in horizontal, lateral and vertical planes
Electrical connections via M20x1.5mm cable entry (models can be adapted for two cable entries)
Captive lid and fasteners
Two year warranty
Accessories available
Models for operation in non-hazardous areas are available.
Applications
The type 3171 Ex vibration switch, with its low frequency response is ideal for detection of mass imbalance on most machines. It is inherently insensitive to high frequency components and those caused by external knocks, etc. The type 3171 Ex vibration switch is responsive to vibrations in all directions.