Micro Motion RFT9709 Manuál s instrukcemi Strana 137

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Using ProLink
®
Software with Micro Motion
®
Transmitters
123
Configure Menu: Transmitter Information
continued
Pressure input for RFT9739
Configure Menu:
Transmitter Outputs
Configure Menu:
Transmitter Information
Configure Menu: EventsView Menu: Status
Configure Menu:
Characterize
Configure Menu:
Transmitter Variables
Pressure compensation
If the RFT9739 is configured for pressure compensation, flowmeter
measurement will not be compensated for pressure during a pressure
input failure.
Primary pressure compensation
The RFT9739 polls for gauge pressure values from the
HART-compatible pressure cell as a primary master.
The user must enter the HART tag name for the desired pressure
transmitter.
The user must configure the RFT9739 for pressure compensation,
as described in
Section 8.7
, page 86.
Secondary pressure compensation
The RFT9739 polls for gauge pressure values from the
HART-compatible pressure cell as a secondary master.
The user must enter the HART tag name for the desired pressure
transmitter.
The user must configure the RFT9739 for pressure compensation,
as described in
Section 8.7
, page 86.
Analog input viscosity
The RFT9739 accepts the 4-20 mA signal for differential pressure values
from a DP cell. See the RFT9739 instruction manual for pressure input
wiring instructions.
The user must set values represented by the input at 4 mA and
20 mA, as described in
Section 10.3
, page 112.
The user must perform a viscosity calibration, as described in
Section 8.7
, page 86.
Analog input pressure compensation
The RFT9739 accepts the 4-20 mA signal for gauge pressure values
from a pressure cell. See the RFT9739 instruction manual for pressure
input wiring instructions.
The user must set values represented by the input at 4 mA and
20 mA, as described in
Section 10.3
, page 112.
The user must configure the RFT9739 for pressure compensation,
as described in
Section 8.7
, page 86.
Modbus viscosity
The Modbus-compatible host controller downloads differential pressure
values to the RFT9739 by writing an integer that represents differential
pressure to input register 40007, or by writing an IEEE 754 floating point
value that represents differential pressure to register pair 20257-20258.
The user must perform a viscosity calibration, as described in
Section 14.5
, page 148.
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