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Reference Manual
00809-0100-4665, Rev AA
August 2010
A-5
Rosemount 8732
Profibus PA Function
Blocks
Physical Block - Slot 0
The Physical Block contains physical transmitter information, including
available memory, manufacturer identification, device type, software tag, and
unique identification.
Transducer Block - Slot 5
The transducer block calculates flow from the measured induced voltage and
provides the flowrate input to the AI Block. The calculation includes
information related to the calibration number, line size, and diagnostics.
Analog Input Block - Slot 1
The AI function block processes the measurement and makes it available to
the Host system. The AI function block also allows filtering, alarming, and
engineering unit changes. The 8732E Transmitter with Profibus PA digital
fieldbus comes standard with one AI function block which is dedicated to flow.
Totalizer Block (3 blocks) - Slots, 2, 3, 4
The Totalizer function block allows for totalization of the flow signal. The
8732E Transmitter with Profibus PA digital fieldbus comes with 3 independent
totalizer blocks. Each totalized value can be displayed on the Local Operator
Interface of the device in addition to the Primary Variable.
Sensor Compensation
Rosemount sensors are flow-calibrated and assigned a calibration factor at
the factory. The calibration factor is entered into the transmitter, enabling
interchangeability of sensors without calculations or a compromise in
standard accuracy.
8732E transmitters and other manufacturers’ sensors can be calibrated at
known process conditions or at the Rosemount NIST-Traceable Flow Facility.
Transmitters calibrated on site require a two-step procedure to match a
known flow rate. This procedure can be found in the Operations Manual: