Pressure Sensors
Shoulder sealed
Please refer to the term “Front
sealed” stated above for a definition
and illustrations.
SIC
Acronym for Sensor Identification
Cable that is part of the SDM Sensor
Data Management system. The SIC
fulfills the same purpose as SID. Like
the SID it carries an unique identification
number which allows the
amplifiers from AVL to recognize and
identify the sensor currently connected
to the indicating system. The SID
is integrated into the piezoelectric
cable that connects a sensor to the
amplifier system. An SIC solution
is an ideal way to upgrade sensors
without SID for SDM or if the sensor
design does not allow an integration
directly inside the sensor housing.
To ensure the unique identification
number of the SID is always associated
with one specific sensor it is
necessary not to separate the SIC
from the sensor.
SID
Acronym for Sensor Identification
that is part of the SDM Sensor Data
Management system.
A sensor with SID electronics has a
built-in electronic component with
an unique digital serial or identification
number. Connected to an AVL
amplifier this identification number
is read by the amplifier and allows
the system to identify which specific
sensor is connected to the system.
The system can automatically request
stored calibration data from the SDB
Sensor Database that corresponds
to the identified sensor. Additionally
data like total run-time, number of
load cycles and peak pressures can
be monitored and stored at the SDB
Sensor Database.
T
TEDS
Acronym for the IEEE 1451 standard
for smart transducers.
A Transducer Electronic Data Sheet
(TEDS) is a standardized method of
storing sensor and actuator identification,
calibration and manufacturer
related information. TEDS formats
are defined in the IEEE1451 interface
standards developed by an IEEE
Committee. This standard describes
a set of network-independent communication
interfaces for connecting
transducers to instrumentation
systems-, and control/field networks.
The TEDS, in essence, is a memory
device attached to the transducer
and contains information needed by
a measurement instrument or control
system to interface with a transducer.
Thermal sensitivity change %
This term classifies how the average
temperature at the mounting position
is influencing the sensitivity of
the sensor. The maximum change of
sensitivity within a certain temperature
range is expressed as a percentage
of the nominal sensitivity. The
thermal sensitivity change of water
cooled quartz sensors depends
additionally on the flow rate of the
cooling water. The value for the
thermal sensitivity change should be
as small as possible.
Thermo shock error
Refer to the explanation of “Cyclic
Temperature Drift” on page 20.
Thread diameter metric
Diameter of the metric or UNF
mounting thread of thread-type
sensors.
W
Weight g
Physical weight of the sensor without
the connecting cable.
25