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1. General information
The mechanical flow switch described in the operating instructions has been
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designed and manufactured using state-of-the-art technology. All components
are subject to stringent quality and environmental criteria during production. Our
management systems are certified to ISO 9001.
These operating instructions contain important information on handling the instru-
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ment. Working safely requires that all safety instructions and work instructions are
observed.
Observe the relevant local accident prevention regulations and general safety
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regulations for the instrument's range of use.
The operating instructions are part of the product and must be kept in the immediate
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vicinity of the flow measuring instrument and readily accessible to skilled personnel
at any time.
Skilled personnel must have carefully read and understood the operating instruc-
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tions prior to beginning any work.
The manufacturer's liability is void in the case of any damage caused by using
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the product contrary to its intended use, non-compliance with these operating
instructions, assignment of insufficiently qualified skilled personnel or unauthorised
modifications to the instrument.
The general terms and conditions contained in the sales documentation shall apply.
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Subject to technical modifications.
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Further information:
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- Internet address:
www.wika.com
- Relevant data sheet:
FV 30.10
Abbreviations, definitions
SPDT
Single pole double throw
NC
Normally closed contact type (NC = normally closed)
NO
Normally open contact type (NO = normally open)
COM
Common contact
GND
Ground connection
WIKA operating instructions, flow switch, model FSM-6100
2. Design and function
2.1 Overview
2.2 Description
The flow element of the model FSM-6100 is a paddle which works against a spring
mechanism with an adjustable pre-load force. On the spring mechanism there is a
contact arm for actuating the switch contact. The switch is actuated as soon as the force
generated by the flow is greater than the set pre-load force.
2.3 Terms used
Reset point
The flow value at which the switch returns to the starting position. Mathematically,
the flow value for the reset point is equal to the flow value of the switch point
minus the switch differential on rising flow. On falling flow, the flow value
for the reset point is equal to the flow value of the switch point plus the switch
differential.
Maximum operating flow
The maximum flow with which the instrument can be used without changing the
assured performance data.
Operating pressure
The maximum pressure with which the instrument can be used without changing the
assured performance data.
With stand pressure
The maximum pressure with which the instrument can hold without any damage to the
system and surroundings.
2.4 Scope of delivery
Flow switch, operating instructions
Cross-check scope of delivery with delivery note.
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