Pressure sensors
B58610T*
Absolute pressure transducers
AT2 series
4. Symbols and terms
1)
Storage temperature range Tst
A storage of the pressure sensor within the temperature range Tst,min up to Tst,max
and without applied pressure and supply voltage will not affect the performance of the pressure sensor.
2)
Operating temperature range Ta
An operation of the pressure sensor within the temperature range Ta,min up to Ta,max
will not affect the performance of the pressure sensor.
3)
Rated pressure pr
Within the rated pressure range 0 up to pr the signal output characteristic corresponds to this specification.
4)
5)
Over pressure pOV
Pressure cycles within the pressure range 0 up to pov will not affect the performance of the pressure sensor.
Supply voltage VDD
VDD,max is the maximum permissible supply voltage, which can be applied without damages.
The output voltage Vout is ratiometric (Vout ~ VDD).
6)
DC voltage resistance Vis
The pressure sensor withstands a high voltage between the stainless steel pressure connection and the electrical
connection VDD and Vout (all short circuited) without damage.
7)
8)
9)
Offset V0
The offset V0 is the signal output Vout (p = 0) at zero pressure.
Sensitivity S
Within the pressure range 0 up to pr the output voltage is Vout(px) = V0 + S · px
Non-linearity L (including pressure hysteresis)
The non-linearity is the deviation of the real sensor characteristic Vout = f(p) from the ideal straight line.
It can be approximated by a polynomial of second order, with the maximum at px = pr / 2.
The equation to calculate the non-linearity is:
10)
11)
12)
13)
Temperature hysteresis
The temperature hysteresis is the change of offset, starting from the value at 25 °C after a temperature change
and return to 25 °C. Determined during temperature cycles in operating temperature range (cycles with 1 K/min).
(Full Scale): FS = VFS = S · pr
Temperature coefficients of the bridge resistance αRS, βRS
Bridge resistance at temperature Tx: RS(Tx) = RS(25 °C) · [ 1 + αRS · (Tx – 25 °C) + βRS · (Tx – 25 °C)2 ]
Values are valid within the operating temperature range Ta,min up to Ta,max
Out of the operating temperature range, the deviation may increase.
Temperature coefficients of the sensitivity αS, βS
Sensitivity at temperature Tx: S(Tx) = S(25 °C) · [ 1 + αS · (Tx – 25 °C) + βS · (Tx – 25 °C)2 ]
Values are valid within the operating temperature range Ta,min up to Ta,max
Out of the operating temperature range, the deviation may increase.
Temperature coefficients of offset TCV0
Offset at temperature Tx: V0(Tx) = V0(25 °C) + TCV0 · (Tx – 25 °C) · VDD
Values are valid within the operating temperature range Ta,min up to Ta,max
Out of the operating temperature range, the deviation may increase.
SEN PS PD T
2022-03-10
Please read Cautions and warnings and
Page 5 of 9
Important notes at the end of this document.
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