-3-33-5-EH-23.pdf -3-33-5-EH-23 / Transducer General description pplications transducer is an OEM sensing device. ignal conditioning consist of complete temperature compensation and adjusted amplifier in single, programmable I. High performance and accuracy enables use of this transducer in many applications. rogrammable temperature compensation provides % tal error over 7 temperature. tandard ratiometric and I2 digital at the same time give OEM users maximum freedom for any of application with dry air or non-corrosive gases and liquids. The whole group consists for s from. ifferential and versions are available for this transducer group. Features ingle 5 supply voltage sy use package Wide compensated ( 7 ) Total accuracy down % over 7, all effects included (maximum) tandard voltage Up 5 bits I2 ( + temperature) High performance OEM applications ifferential and configurations s: from March, 22 H Medical instrumentation Respirars ir flow moniring rocess control Leak detection ltimeters /7
-3-33-5-EH-23.pdf -3-33-5-EH-23 / March, 22 Transducer (,5 psi) 2 (,3 psi) s -M -2M 2 gage gage Types overview (,5 psi) (,3 psi) -M -2M T = 25 s gage gage M -25 85 = 5 unless otherwise noted. cc s ompensated: 7 rage : - 25,5,5 ) Over 2-25 85 urst 5 7 3 Low s ompensated: rage : - 25 ) 2 Over 2 (,5 psi) (,3 psi) urst 5 3 s 2/7 5 (,8 psi) (,5 psi) -5M 5 gage (,8 psi) -5M gage -M gage (,5 psi) -M gage 5 75 5 5 (,8 psi) 75-5M 5 (,8 psi) -5M,5 5 (,5 psi) 5 -M (,5 psi) -M,5 -M -2M 2 (,5 psi) (,3 psi) -M -2M,5,5 s s -25 85 ompensated: 7 rage : - 25,5,5,5 ) Over s 2 5-25 85 urst 5 7 3 75 ompensated: rage : - 25 ) 35 5 Over 2 (5 psi) (5 psi) (3 psi) (6 psi) urst 5 3 75 High H 35M 2 35 s (5 psi) (5 psi) (3 psi) (6 psi) H 35M 2 s s -25 85 ompensated: 7 rage : -,5 25 ) Over s -25 85 3 6 8 urst,7 5 2 ompensated: 7 rage : - 25 ) arameter Over 3ymbol ower supply urst, 5 upply voltage urrent consumption I arameter ymbol nalog () ower supply Offset O upplyvoltage voltage Full scale (FO) urrent consumption F I Full scale span (F) FO nalog () Offset voltage ( Offset voltage OO igital (), 5 bits Full scale (FO) F Offset voltage Full scale span (F) O FO Full scale (FO) Offset voltage ( F O Full scale span (F) FO igital (), 5 bits Offset voltage ( Offset voltage OO 7) igital (temperature), 5 bits Full scale (FO) F @ Full scale span (F) o TFO @ 7 Offset voltage ( TOs 8) ccuracy () @ 25 5 bits 7) igital (temperature), Low ( F E @ Tao Low (2 @ 7 F E Tas tandard 8) ccuracy () @ 25 9) Total accuracy @ 7 Low (() F Low ( E (2 F F Etaa Low (2 F tandard E Etaa 6,75,75 5 7 ( psi) 5 7 ( psi) 7 Typ. 8 5,25 6,5 Typ.,5, 2,5 5,25 6,5,5 3277, 299 2,5 262 638 3277 2 2 m m 299 892 262 2576 638 892, 2576,3 ±,5 ±,8,7,,6,3,5 ±,5 ±,8
s -3-33-5-EH-23.pdf s ) Over urst -M -2M -25 85 ompensated: 7 rage : - 25 2 5 3-5M 5 75 35 (5 psi) (5 psi) (3 psi) - s H - - s -25 85 erformance characteristics ompensated: 7 rage : - 25 TOver = 25 ) 3 M = 5 unless otherwise noted. urst, 5 cc ymbol I igital (), 5 bits Offset voltage Full scale (FO) Full scale span (F) Offset voltage ( 7) igital (temperature), 5 bits @ @ 7 8) ccuracy () @ 25 Low ( F Low (2 F tandard 9) Total accuracy () @ 7 Low ( F Low (2 F tandard (all other Resolution / converter / converter Response time ) Repeatability ) onlinearity & hysteresis (FL) Load resistance Media compatibility Weight 5 / (6 psi) ( psi) March, 22 7 3/7 6 8 2 2 35M Transducer arameter ower supply upply voltage urrent consumption nalog () Offset voltage Full scale (FO) Full scale span (F) Offset voltage ( -M -3-33-5-EH-23,75 Typ. 5,25 6,5 m O F FO O,5, 2,5 O F FO O 3277 299 262 638 To Ts 892 2576,,3 ±,5 ±,8 Eta Eta Eta,7,6,5 ± i O Ert Er El RL,5 ±,5 ±, 5 bit bit ms % FO % FO k W 2 ee spec. note 9, ±,3 g
-3-33-5-EH-23.pdf -3-33-5-EH-23 / Transducer March, 22 /7 pecification notes ) 7) 8) Over is the maximum which may be applied without causing damage the sensing element. urst is the maximum which may be applied without causing leakage damage the sensing element. nalog signal is ratiometric power supply cc, digital signal is not ratiometric the power supply. Offset voltage is the voltage at zero. Full scale is the voltage at full. Full scale span is the algebraic difference between the at full scale and offset. igital signal (temperature) is not ratiometric power supply cc. data are read directly on the sensing element. ccuracy includes all effects (offset, span, nonlinearity, hysteresis and repeatability) at room temperature and represents maximum deviation of transducer signal from ideal characteristic. 9) Total accuracy includes all effects (offset, span, nonlinearity, hysteresis and repeatability) included with all temperature effects of offset and span. It describes overall error and represents maximum deviation of transducer signal from ideal characteristic in compensated temperature from 7. ) Repeatability is defined as typical deviation of the signal after cycles. ) onlinearity is defined as the FL (best fit straight line) across entire. Media compatibility: on port : clean, dry and noncorrosive gases silicon, RT, ceramics l2o3, gold, epoxy, polymer. Media compatibility: on port 2: noncorrosive gases or liquids RT, ceramics l2o3, epoxy, polymer. I2 communication General description transducer have I2 communication availability. When this device is connected I2 digital bus, the digital readouts with resolution up 5 bits of (st and 2nd byte) and temperature (3rd and th byte) can be read from serial register of the internal I. works as a slave configured device which replies the requests from the master (normally microcontroller). The I2 bus is controlled from the master which generates TRT and TO conditions. igital I2 interface tates descriptions: Idle period: the bus is free when both data line () and clock line (L) are HIGH. TRT condition (): is generated in transition of line from HIGH(H) LOW(L) when L line (clock) is HIGH. It can be only generated by the master. ch data request needs starts with TRT condition.
-3-33-5-EH-23.pdf ) I TRIGHT: -3-33-5-EH-23 I URE: / Transducer March, 22 5/7 TO condition (): is generated in transition of line from LOW(H) HIGH(L) when L line (clock) is HIGH. It can be only generated by the master. ch data request needs end with TO condition. T valid (): ata is transmitted in bytes (8 bits) starting with data (2 bytes) with the M (most significant bit) first and followed by 2 bytes of temperature data with M first. ch data bit is transferred with each clock pulse. alid data are presented after start condition when data line is stable during HIGH clock is generated. changes must be done while clock is LOW. KOWLEGE (): Information data are transferred in bytes (8 bits) on data bus with M first. fter receiving of each byte master or slave must pull down line LOW as acknowledge for receiving the data. For that reason master must generate an extra clock. If acknowledge is missed slave becomes inactive, which means that master must either repeat last command or generate TO condition. LE address: efault slave address of devices are facry calibrated x78. ccording I2 specification there are 27 different addresses available, which give possibility for multi-slave communication where the user can connect up 27 devices with unique addresses the same I2 bus. fter generating TRT condition master sends address containing 7 bits followed by a R/W (read=, write= ). I2 communication procol:
-3-33-5-EH-23.pdf -3-33-5-EH-23 ) I TRIGHT: I URE: / Transducer March, 22 6/7 I2 interface parameters: arameter Input HIGH level Input LOW level LOW level ull up resisr lock frequency L Load capacitance () ) I TRIGHT: (L/) er G L / I 9 7 M 2M 5M %cc %cc %cc Ω khz I URE: I2 application circuit: oth I2 lines have be connected with pull up resisrs (recommended,7 k ohms), additional serial resisrs 3 ohms recommended also (optional). cer direction port inout tube arameter Input HIGH level Input LOW level LOW level ull up resisr lock frequency L Load capacitance () (L/) M 35M 2 7 ifferential 2 bsolute (for p ) 5 direction 35 press. -press +press. (biderectional) in number 2 3 ins 5 6 traight 9 7 G L / I inurved 5 must be left unconnected Transducer M 2M direction port 5M M port 35M ositive on egative on 2 7 M ins ifferential
-3-33-5-EH-23.pdf -3-33-5-EH-23 / Transducer Outline dimensions ) I TRIGHT: ) I TRIGHT: in number in number in number G G 2 2 2 3 L 3 3 L 5 5 / 5 / 6 I 6 6 I Ordering guide arameterarameter arameter 9 Input HIGHInput level HIGH level 9 % cc I URE: Input HIGH level 9 %cc cc Input LOW Input level LOW level % I Input LOW level URE: %cc cc LOW level LOW level % LOW level %cc ull up resisr 7 ull up resisr 7 Ω ull up resisr 7 Ω lock L frequency L lock frequency khz lock frequency L khz Load capacitance () Load capacitance () Load capacitance () (L/)(L/) (L/) March, 22 7/7 %cc %cc %cc Ω khz G L / I Transducer Transducer Transducer direction port tube tube direction port direction port tube M M M 2M 2M 2M 5M 5M 5M M M M 35M 35M 35M 2 2 2 7 7 7 M M M 2M 2M 2 2 2M 2 5M 5M 5 5 5M 5 M M M 35M 35M 35 35 35M 35 2 2 2 7 7 7 ins ins ins traight traight ifferential ifferential traight ifferential (for bsolute (for p ) urved urved bsolute p ) urved bsolute (for p ) direction direction direction press. press. press. -press +press. -press +press. -press (biderectional) +press. (biderectional) (biderectional) port port port ositiveon on ositive ositive on egativeon on egative egative on Other configurations possible on special request.
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