5. PARTS LIST
Figure 5-1
Parts list: Enclosure
H
and
T
, housing with PLUG connector
1300354160
4. CONSTRUCTION AND
OPERATION
4.1 Smart transmitter
Sensor Module
The piezoresistive sensor, which has a silicone oil fill, is
isolated from the process with a diaphragm. Sensor
pressure and temperature are measured with a 24-bit AD
converter. Linearity and temperature effects are digitally
corrected with an internal microprocessor connected to
the sensor module.
The
sensor
converts pressure to electrical signal. The
conversion is carried out through a Wheatstone bridge
supplied with direct current. The elastic displacement
produced in the bridge by the pressure causes bridge
unbalance which is measured as a DC voltage signal.
Compensation
includes temperature compensation and
linearization. Each sensor is calibrated individually
through a resistance network connection. The
temperature information required by compensation is
derived from a temperature measuring element located by
the Wheatstone bridge.
Electronics Module
The electronics module converts the process pressure
signal from the sensor module to 4-20 mA output signal.
The conversion can be made in linear, square root or
inverted mode, or it can be done through user-selectable
pressure/output point pairs (2-16 points).
Transmitters provided with own display (code
N
) is equipped
with operating keys that allow you to define the transmitter’s
all functions.
The active functions required for
signal shaping
are in a customized IC which is divided into two sub-blocks:
amplifier block and standard-signal shaping block. The
standard-signal shaping block also includes zero, span and
damping adjustments.
The
interface stage
includes failure protections to ensure
the transmitter's operation and nonfailure in possible failure
conditions. This stage also includes the TEST and cable
connections
SATRON VG
pressure transmitter
BPLV700AV
2006-12-19
16
When ordering spares, please quote this document’s number BPLH700AV and date 2004-04-30, the name and order
number of the required part, and the transmitter’s serial number. Parts indicated with asterisk (*) as well as screws, nuts
and seals (packings) are spare parts.
14
13
10
9
8
7
4
3
2
1
11
Summary of Contents for VG
Page 4: ......
