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AKR10.00C80 Datasheet(PDF) 5 Page - EPCOS |
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AKR10.00C80 Datasheet(HTML) 5 Page - EPCOS |
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5 / 7 page  Pressure sensors Gauge pressure transducers AK2 series AS SEN PD 2009-08-03 Please read Cautions and warnings and Page 5 of 7 Important notes at the end of this document. 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) Overpressure pOV Pressure cycles within the pressure range 0 up to pov will not affect the performance of the pressure sensor. 5) 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) Offset V0 The offset V0 is the signal output Vout(p = 0) at zero pressure. 7) Sensitivity S Within the pressure range 0 up to pr the output voltage is Vout(px) = V0 + S · px 8) Nonlinearity L (including pressure hysteresis) The nonlinearity 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 nonlinearity is: r x 0 r out 0 x out p p V ) p ( V V ) p ( V L − − − = 9) 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 10) Temperature coefficients of the bridge resistance α α α αRS, β β β 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. 11) Temperature coefficients of the sensitivity α α α αS, β β β 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. 12) Temperature coefficient of offset TCV 0 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. |
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