1.2
ST 3000 Smart Transmitters,
Figure 3
Functional Block Diagram for Transmitter in Digital DE Mode of Operation.
Meter Body
DP or PP
Sensor
Temperature
Sensor
Static Pressure
Sensor
Pressure
Series and model
number data
4
ST 3000 Release 300 and SFC Model STS103 User's Manual
Factory
Characterization
Data
PROM
Microprocessor
A/D
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
Table I
S T D 1 2 0
E 1 H
Continued
Electronics Housing
Digital I/O
Modular Electronics
Table II
Table III
0 0 0 0 0
S
B
,
Digital signal
broadcasts PV
in floating point
format over
20 mA loop.
Terminal Block
Table IV
X X X X
1 C
Continued on next page
6/05