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MVA Multivariable Analog Signal Splitter

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Multivariable Safety System Interface

The MVA-141 provides the front-end signal & safety conditioning for analog input safety systems to use Honeywell’s Digitally Enhanced (DE) transmitters.
bullet Use with Triconex or FSC
bullet CE, CSA, UL, and designed to meet ISA S84 and IEC 61508 safety standards.
bullet Provides an independent PV validation signal.
bullet Configurable fail-safe action.
bullet DE Single or DE multivariable.

DE Input >
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Unlike an analog output transmitter alone, the MVA provides true Process Measurement Validation . . .

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Every digital Process Measurement Value from the transmitter has diagnostic Status.

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Transmitter diagnostic status is passed through the MVA to the FSC.

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MVA analog repeat output is Synchronously Validated :

  1. Transmitter Diagnostic Status

  2. DE Communication Integrity

  3. MVA Diagnostic Status

AND . . .

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MVA Analog Output signal integrity is Continuously Validated.

The MVA analog output (into the FSC) is re-sampled by the MVA and validated for agreement with the transmitter’s digital DE value.





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Smartline® Digitally Enhanced (DE) transmitters are a product of Honeywell Inc.