Bailey Platinum standard Series, Инструкция по эксплуатации

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DESCRIPTION AND OPERATION
FUNCTIONAL OPERATION
WBPEEUI110505A0 2 - 3
The cell and characterization board are a matched set and may
not be separated. For more information on the characteriza-
tion board, refer to
Electronics Assembly .
Electronics Assembly
Figure 2-3 shows the Type PTSDL level transmitter electronics
in block diagram form. All calibration, configuration, and com-
pensation data are stored in both the main and characteriza-
tion boards. The output of the cell goes into a custom analog to
digital converter on the LSI smart chip via the characterization
board. The microcontroller requests the digital outputs of the
custom analog to digital converter. It uses these digital outputs
and the memory stored on the characterization board to calcu-
late an output for the transmitter. This output is then available
as a four to 20-milliampere output or a polled digital process
variable signal.
The transmitters include a lockout jumper that when acti-
vated, prevents any alterations to the calibration or
configuration (Fig.
5-1 ).
Figure 2-3. Electronics Block Diagram
S E E P RO M
L S I
S M A R T C H IP
A N A L O G TO D IG ITA L
C O N V E RT E R
L C D
O P T IO N
3 2 K
E P R O M
E E P R O M
H C 1 1
M IC RO C O N T RO L L E R
IN T E R N A L
P OW E R S U P P LY
F S K
C O M M U N IC AT IO N
C IR C U IT RY
IS O L AT IO N F ILT E R
C U R R E N T
C O N T RO L
V O LTA G E
R E G U L AT IO N
L IG H T N IN G
A R R E S TO R
O P T IO N
D IG ITA L F S K
C O M M U N IC AT IO N S
O R
D IG ITA L F S K
C O M M U N IC AT IO N S
W IT H
4 TO 2 0 -m A O U T P U T
IS O L AT IO N
IS O L AT IO N
A N A L O G M E T E R
O P T IO N
1 ) P R E S S U R E
2 ) C E L L T E M P E R AT U R E
3 ) DY N A M IC T E M P E R AT U R E
(T Y P E P T S D P R E S S U R E
T R A N S M IT T E R O N LY )
C H A R AC T E R IZ ATIO N
B O A R D
M A IN B O A R D
T 02 19 9 A