Reference Manual
00809-0100-4302, Rev BA
January 2008
Rosemount 1153 Series B
www.rosemountnuclear.com
Section 4
Operation
␦
-Cell Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3
Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3
Linearity Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3
Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-4
Zero and Span Adjustments . . . . . . . . . . . . . . . . . . . . . . . page 4-4
Current Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-4
Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-4
Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . page 4-4
OVERVIEW
This section provides brief descriptions of basic transmitter operations in the
following order:
•
Transmitter Operation
•
The
␦
-Cell
™
Sensor
•
Demodulator
•
Linearity Adjustment
•
Oscillator
•
Voltage Regulator
•
Zero and Span Adjustments
•
Current Control
•
Current Limit
•
Reverse Polarity Protection
TRANSMITTER
OPERATION
The block diagram in Figure 4-2 on page 4-3 illustrates the operation of the
transmitter.
Rosemount 1153 Series B Alphaline Pressure Transmitters have a variable
capacitance sensing element, the
δ
-Cell (Figure 4-1 on page 4-2). Differential
capacitance between the sensing diaphragm and the capacitor plates is
converted electronically to a 2-wire 4–20 mA dc signal.
Where:
P
is the process pressure.
K
1
is a constant.
P
K
1
C
2
C
1
–
C
1
C
2
+
--------------------
⎝
⎠
⎜
⎟
⎛
⎞
=
Summary of Contents for Rosemount 1153 Series B
Page 6: ...Reference Manual 00809 0100 4302 Rev BA January 2008 Rosemount 1153 Series B iv ...
Page 9: ...Reference Manual 00809 0100 4302 Rev BA January 2008 TOC 3 Rosemount 1153 Series B ...
Page 10: ...Reference Manual 00809 0100 4302 Rev BA January 2008 Rosemount 1153 Series B TOC 4 ...
Page 12: ...Reference Manual 00809 0100 4302 Rev BA January 2008 Rosemount 1153 Series B 1 2 ...
Page 50: ...Reference Manual 00809 0100 4302 Rev BA January 2008 Rosemount 1153 Series B 5 12 ...
Page 62: ...Reference Manual 00809 0100 4302 Rev BA January 2008 Rosemount 1153 Series B Index 2 ...
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