Vibration Switch Exproof

Vibration Switch Exproof











Features Ease of installation on new or
existing plant and machineryRobust for Industrial EnvironmentsBAS00ATEX2019XS.P.C.O. and D.P.D.T. contactsManual ResetNo maintenance after installationModels for operation in
non-hazardous areas, see appropriate data sheet







General Descriptions

The 3171EExed is a low cost vibration
sensitive switch for the protection of rotating plant and
reciprocating machinery operating in Hazardous areas. It is
adjustable to operate above the normal running levels of vibration,
activating alarm or machine shut-down circuits

Once operated the internal microswitch
remains latched until reset.

The 3171EExed vibration switch, with
its low frequency response,makes it ideal for detection of mass
unbalance on most machines. It is inherently insensitive to high
frequency components and those caused by external knocks, etc.

Being responsive to vibrations in any
directions (dominantly in a horizontal plane) installation problems
are minimised.

The 3171 Exed vibration switch is reset
by depressing the reset button on the base. Adjustment of the operate
point is controlled by rotating a set screw on top of the switch.

Applications

Rotating and reciprocating machines eg.
Fans, Centrifuges, Compressors, Pumps, Mills etc. operating in
Hazardous areas.

Technical Specification






Mounting


Vertical only (reset button lower) by two fixing holes.
Recommended screws -M4




Set Level Range


1 to 9g Peak (Horizontal vibrations)




Enclosure


Ingress Protection IP 67 to BS 5420




Material


Die cast zinc alloy Mazak III




Finish


Chromate Passivation with Polyester Paint (Grey)




Ambient Temp Range


-20oC to 50oC (-55oC 4 Joule max impact areas)




Connector core size


2.5 mm2 max




Integral earth connection


2.5 mm2 max




External earth terminal


6.0 mm2 max