ADP11423 データシートの表示（PDF） - Panasonic Corporation
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ADP11423 Datasheet PDF : 7 Pages
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Glossary of Common Terms for Pressure Sensors
EXPLANATION OF TERMS
■ Pressure object
This is what can be used to activate the pressure
sensor.
(The Panasonic Corporation pressure sensor can be
used with gas.)
■ Rated pressure
The pressure value up to which the specifications of
the pressure sensor are guaranteed.
■ Maximum applied pressure
The maximum pressure that can be applied to the
pressure sensor, after which, when the pressure
is returned to below the rated pressure range,
the specifications of the pressure sensor are
guaranteed.
■ Temperature compensation range
The temperature range across which the
specification values of the pressure sensor are
guaranteed.
■ Drive current (voltage)
The supply current (voltage) required to drive a
pressure sensor.
■ Output span voltage
The difference between the rated output voltage and
the offset voltage. The output span voltage is also
called the full-scale voltage (FS).
■ Offset voltage
The output voltage of a pressure sensor when no
pressure is applied.
■ Rated pressure output voltage
Output voltage when rated pressure is applied.
■ Linearity
When the pressure is varied from no load to the
rated pressure, the linearity is the amount of shift
between the straight line that joins the no-load
voltage value and the rated pressure voltage value
(expressed as the ratio of the amount of shift (D1)
at half of the rated pressure value with respect to
the full scale voltage (FS)).
■ Output hysteresis
The ratio of the difference (D2) in the noload output
voltages when the pressure is varied from no load
to the rated pressure then reduced back to no load,
with respect to the full scale voltage (FS).
FS
D1
D2
Offset
voltage
No load
1/2 rated Rated Rated pressure
■ Offset voltage temperature characteristic
The variation of the offset voltage with changes
in ambient temperature. The difference between
the offset voltage at the standard temperature
and the offset values at the compensation lower
limit temperature (low temperature) (D1) and
compensation upper limit temperature (high
temperature) (D2) are obtained, and the offset
voltage temperature characteristic is expressed
as the ratio of the larger of these two differences
(absolute) with respect to the full scale voltage (FS).
■ Temperature sensitivity characteristic
The variation of the sensitivity with changes in
ambient temperature (variation in full scale (FS)).
The difference between the full scale voltage at the
standard temperature (FS) and the full scale values
at the compensation lower limit temperature (low
temperature) (FS1) and compensation upper limit
temperature (high temperature) (FS2) are obtained,
and the offset voltage temperature characteristic is
expressed as the ratio of the larger of these two
differences (FS1 - FS and FS2 - FS (absolute)) with
respect to the full scale voltage (FS).
Compensation upper
limit temperature
No
Compensation
lower limit temperature
FS2
Δ2
Standard temperature
FS
Δ1
FS1
No load
No load
■ Bridge resistance
Refers to the resistance value of a piezoresistance
formed on a monolithic silicon substrate.
For example, the values of the resistances R1 to R4
in the bridge are typically 5 kΩ each.
✽ When the resistances of the resistive elements R1
to R4 that comprise the bridge are 5 kΩ each, the
equivalent composite resistance of the bridge is 5
kΩ (3 kΩ bridges are also available).
R2
R1
The bridge resistance is
R3
R4 the resistance of the four
resistive elements that
make up the bridge
expressed as one
combined resistance.
■ Overall accuracy
Accuracy of offset voltage and rated pressure output
voltage within the temperature compensation range.
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
00 Aug. 2015
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