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4 ST 3000 Release 300 and SFC Model STS103 User’s Manual 6/08
1.2 ST 3000 Smart Transmitters, Continued
Figure 3 Functional Block Diagram for Transmitter in Digital DE Mode of Operation.
A/D
DP or PP
Sensor
Temperature
Sensor
Static Pressure
Sensor
Meter Body
Electronics Housing
Pressure
Factory
Characterization
Data
Modular Electronics
Terminal Block
Digital signal
broadcasts PV
in floating point
format over
20 mA loop.
Digital I/O
PROM
M
u
lt
ip
le
x
e
r
Microprocessor
Series and model
number data
Honeywell’s line of ST 3000 Smart Transmitters includes these two
series designations:
• Series 100
• Series 900
Each series includes several models to meet various process pressure
measurement and interface requirements. Each transmitter comes with a
nameplate located on the top of the electronics housing that lists its given
“model number”. The model number format consists of a Key Number
with several Table selections as shown below.
Key Number
M
ete
r
Bo
d
y
F
la
ng
e
As
se
m
b
ly
O
p
t
i
o
n
s
F
ac
to
r
y
I
dentifi
c
at
i
on
Table I Table II Table III Table IV
Ba
sic
T
ype
,
STD1 20 E1H 00000 S 1CB
XXXX
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