1.3 SMV 3000 Smart Multivariable Transmitters, Continued

SMV Operating Modes, continued

In the digital DE protocol format, all four process variables are available for monitoring and control purposes; and the meter body temperature is also available as a secondary variable for monitoring purposes only - See Figure 3.

Figure 3 Functional Block Diagram for Transmitter in Digital DE Mode of Operation.

 

 

 

 

 

 

s

 

 

 

 

 

g

ic

 

 

 

 

 

t

 

 

 

 

n

is

Meter Body

 

 

i

 

 

 

t

 

r

 

 

ra

 

te

 

 

e

c

 

 

p

ra

 

 

O

 

a

 

 

 

 

 

h

 

 

 

 

C

 

 

 

Factory

Characterization

Data

Electronics Housing

PROM

P Sensor

PV1

Temperature Sensor

SV1

Static Pressure Sensor

PV2

Multiplexer

A/D

 

 

PV4

 

 

Microprocessor

Digital I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A/D

PV3

Digital signal broadcasts up to 4 PVs plus secondary variable in floating point format over 20mA loop.

PV1 = Differential Pressure

PV2 = Static Pressure

PV3 = Process Temperature

PV4 = Calculated Volumetric

or Mass Flow

Pressure

RTD or Thermocouple Input

SV1 = Meter Body Temperature (Monitoring purposes only)

Transmitter adjustments

The SMV 3000 transmitter has no physical adjustments. You need an SCT to make any adjustments in an SMV 3000 transmitter. Alternately, certain adjustments can be made through the Universal Station if the transmitter is digitally integrated with our TPS/TDC 3000 control system.

1/99

SMV 3000 Transmitter User’s Manual

5

Page 17
Image 17
Honeywell SMV 3000 user manual SMV Operating Modes, Transmitter adjustments