Figure 2 Functional Block Diagram For Transmitter In Analog Mode Of Operation - Honeywell SMV 3000 User Manual

1.3 SMV 3000 Smart Multivariable Transmitters,
SMV Operating Modes
Figure 2 Functional Block Diagram for Transmitter in Analog Mode of Operation.
Meter Body
P Sensor
PV1
Temperature
Sensor
SV1
Static Pressure
Sensor
PV2
Pressure
4
The SMV 3000 can transmit its output in either an analog 4 to 20
milliampere format or a Digitally Enhanced (DE) protocol format for
direct digital communications with our TPS/TDC 3000 control system. In
the analog format, only a selected variable is available as an output which
can be any one of the following:
• Differential Pressure PV1,
• Static Pressure PV2,
• Process Temperature PV3, or
• Calculated Flow Rate PV4
Note that the secondary variable is only available as a read only parameter
through the SCT or SFC. See Figure 2.
Factory
Characterization
Data
PROM
A/D Microprocessor
A/D
PV3
RTD or
Thermocouple
Input
SMV 3000 Transmitter User's Manual
Electronics Housing
PV4
D/A
Digital I/O
PV1 = Differential Pressure
PV2 = Static Pressure
PV3 = Process Temperature
PV4 = Calculated Volumetric
SV1 = Meter Body Temperature
Continued
Proportional 4 to 20mA
output for selected PV
(Digital signal imposed
during SFC
communications).
or Mass Flow
(Read only)
Continued on next page
1/99