Honeywell SMV800, User Manual

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Revision 1.0 SMV800 Modbus User's Guide Page 3
1.2.4. Functional Characteristics
The SMV800 Modbus transmitter supports standard Modbus RTU transmission mode with
configurable serial communication parameters such as baud rate and parity.
The SMV800 Modbus transmitter measures Differential Pressure, Static Pressure
(Absolute or Gauge), and Process Temperature. The SMV800 measures Process
Temperature from an external RTD or Thermocouple.These measurements are used to
calculate volumetric or mass flow rates and Totalizer. The measured values and calculated
flow may be read by a connected Host. Support of temperature sensing using
Thermocouple and computation of volumetric flow are separate software optional features.
An optional 3-button assembly is available to set up and configure the transmitter via the
Advanced Digital Display. In addition, a Honeywell SMV Modbus PC based application is
available for configuration of transmitter parameters.
1.3 SMV800 Transmitter Name Plate
The transmitter nameplate mounted on the bottom of the electronics housing (see Figure
1-1 ) lists certifications. The model number, physical configuration, electronic options,
accessories are located on the Product I.D. nameplate (see Figure 1-2 ).
Figure 1-2 is an example of a SMV800 for the name plate information. The model number
format consists of a Key Number with several table selections.
Figure 1-2: Typical SMV800 Name Plate
E.g. SMA810, SMA845 or SMG870
You can readily identify the series and basic transmitter type from the third and fourth
digits in the key number. The letter in the third digit represents one of these basic
measurement types for the Static Pressure:

A = Absolute Pressure

G = Gauge Pressure
For a complete selection breakdown, refer to the appropriate Specification and Model
Selection Guide provided as a separate document.