Emerson 3051S Especificaciones descargar pdf (Pagina 233)

Reference Manual

00809-0200-4801, Rev CA

July 2010

D-3

Rosemount 3051S

Revised function blocks (comply w/ most recent ITK)

The Arithmetic, Characterizer and Integrator blocks had small changes made

to them to bring them in compliance to ITK 5.0 (One of the first devices to

pass this level).

Sensor status remains Uncertain when reading is beyond the sensor

limits (increased robustness)

Previous to this release when a pressure went beyond the sensor limits the

pressure status would go to BAD. For example; on a range 2 coplanar

transmitter the published upper sensor limit is 250in H2O although it will still

accurately read up to 277 inH2O and then continue to read much higher but

without much accuracy. In the previous release once the pressure went about

277 inH2O the status went to BAD which could initialize a safety action. Due

to customer demand, if the pressure goes above 277 inH2O the status now

goes to uncertain which allows the operator to determine whether that

pressure is bad or not.

The status does go to Bad when the absolute limit of the sensor is reached.

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