Stahl 9146 Series, Руководство по эксплуатации

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159896 / 914660310010
2018-09-06·BA00·III·en·0 4
Function and Device Design
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Frequency Transmitter Field Circuit Ex i
Series 9146
3.4 Modifications and Alterations
4 Function and Device Design
4.1 Function
Application range
The frequency transmitter is used for monitoring the rpm of rotating machines or
system sections in hazardous areas. The connected sensor or contact can be installed
in Zones 0, 1 or Div 1, 2. The device is permitted for use in Zones 2 and 22 as well as
outside of hazardous areas.
Mode of operation
The frequency transmitter converts intrinsically safe binary input signals into analog
signals proportional to the frequency (non-intrinsically safe). Initiators according to
IEC/EN 60947-5-6 (NAMUR) or potential-free contacts / optocoupler outputs with
suitable resistance wiring can be used as signal transducers. The 9146/10-11-12 variant
additionally provides the function of limit value output or pulse forwarding.
DANGER
Explosion hazard due to modifications and alterations to the device!
Non-compliance results in severe or fatal injuries.
• Do not modify or alter the device.
No liability or warranty for damage resulting from modifications and
alterations.
DANGER
Explosion hazard due to improper use!
Non-compliance results in severe or fatal injuries.
• Use the device only in accordance with the operating conditions
described in these operating instructions.
• Use the device only for the intended purpose specified in these
operating instructions.