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Frequency-to-DC Transmitter Monitors Frequency and Pulse Signals in Safety Instrumented Systems

The SFY Functional Safety Frequency-to-DC Transmitter from Moore Industries monitors frequency or pulse signals in Safety Instrumented Systems (SIS).

Aw 116409 1703np Moore Industries

This helps provide overspeed protection by sending signals that warn the logic solver to alarm or shut down the monitored device for plant, process and personnel safety. The transmitter has been certified by exida for conformance with strict IEC 61508:2010 standards for safety-related applications. The unit is approved for use in a wide variety of processes and factory automation SIS including turbine flow meters, magnetic pickups, dry contact closures, variable frequency drives, turbine tachometer generators, rotating equipment, motor and conveyor speed as well as pulse and frequency output transducers. It can be used to monitor frequency, period, high or low pulse width, and contact closure signals, converting the input signal to an isolated 4-20 mA output. Setup is via Windows compatible Intelligent PC Configuration Software that lets users choose, and then view to confirm, all application specific operating parameters. The SFY also allows users to program a moving average filter which minimizes measurement instability caused by the effects of bent turbine blades or other frequency variations. A user-configurable 5–digit LCD display shows the process variable in selectable frequency units. The unit is also available in explosion-proof/flameproof housings for use in hazardous environments.

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Moore Industries-International, Inc.

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