DESCRIPTION AND OPERATION
FUNCTIONAL OPERATION
WBPEEUI110506A0
2 - 3
digital outputs and the memory stored on the characterization
board to calculate 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.
EZ CAL Option
NOTE: The EZ CAL option is for zero and span validation only. Do
not use it to change the calibrated span of the transmitter. The
EZ CAL option provides no means to indicate if an error is made.
After mounting the EZ CAL option, one of two magnetically
coupled components responds to the moving of a magnet in
the EZ CAL option. When validating the zero, adjust the input
pressure to the configured zero value and turn and hold the
adjustment screw on the EZ CAL option in the zero direction
for at least three seconds. This causes the electronics to auto-
matically adjust the output to zero percent. To validate the
span, set the input pressure to the configured span value,
depress the span lock and turn and hold the adjustment screw
on the EZ CAL option in the span direction for at least three
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
Summary of Contents for platinum standard PTSP Series
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