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GE Sensing & Inspection Technologies
NPA
Surface-Mount Pressure Sensor Series
The NPA product series is provided in a miniature size as a cost effective solution for applications that require calibrated performance. Packaged in a SOIC14 pin surface mount, the NPA Series is available in Gage, Absolute or Differential pressure ranges with either mV, amplified analog or digital outputs. The sensor is intended for printed circuit board mounting and delivered in optional tape and reel form to simplify manufacturing handling.
Features
* Surface Mountable * Differential, Gauge, Absolute & Low Pressure * 10" H2O to 30 PSI Full Scale * Analog Amplified Analog or Digital Output * Uncalibrated mV Output Option * Digital pressure signal: 14 bit ADC / 11 bit DAC * On chip temperature sensor in digital mode * Operating temperature range of -40 to 125C * Total Error Band < 1.5% FSO * 60X overpressure on ranges <1 PSI
NPA Engineering Specification
Parameter Environmental Temperature Range Operating Compensated Storage Mechanical Weight Media Compatibility Positive differential and gage ports Negative differential ports Parameter Common Parameters Accuracy (Total Error Band) Response Time Pressure Overload <1psi FS range Pressure Overload 5psi to 30psi Resolution Pressure ranges Digital Performance Resolution Sampling Rate Digital Serial Output Temperature Sensor Accuracy Analog Performance Parameters 5 volt Excitation Offset Span Volts Volts 0.44 0.5 4 0.56 4C 8bit kHz 14bit 1 ADC 16383 steps 10"H2O %FSO ms full scale full scale -1.5 1 60X 2X 11bit DAC 30psi 1.5 2 Compatible with exposed materials Dry gases only Units Min Typ Max Notes 1 ~1 grams -40 to +125 0 to 70 -40 to +125 C C C -40 to +257F +32 to +157F -40 to +257F Value Units Notes
Analog Performance Parameters 3.3 volt Excitation Offset Span Volts Volts 0.46 0.5 2.5 0.54
Notes: 1. Exposed materials are thermoset plastic, silicon, epoxy, RTV, and pyrex. NPA Uncalibrated Performance Parameter Pressure Range Excitation Input Impedance Output Impedance Zero Offset Full Scale Output (10"H2O) Full Scale Output (1psi) Full Scale Output (5 psi to 30psi) Full Scale Output (15psi & 30psi) Linearity Pressure Hysteresis Temperature Coefficient of Zero Temperature Coefficient of Resistance Temperature Coefficient of Sensitivity Thermal Hysteresis of Zero Position Sensitivity Value 0.36 to 30 1.5 500020% 500020% 75 40 to 120 75 to 135 100 to 166 75 to 135 0.25 0.02 +30 0.29 -0.2 0.2 0.1 Units psi mA mV mV mV mV mV %FSO %FSO V/ V / C % /C %FSO/C %FSO %FSO Notes 10"H2O = 0.361psi = 2.49KPa 10 VDC Maximum
Pin # 3 4 5 6 8 9 10 11 12
Uncalibrated Analog VP VSSP -----VN VDDP
Amplified Digital & Analog ---VSS SIG VDD ----
Function Notes Sensor Interface Positive Output Sensor Interface Ground Not Connected Ground Supply Analog Out, Digital Out, Calibration Interface Supply Voltage Gate Control for External JFET Regulation / Overvoltage Protection Sensor Interface Negative Output Sensor Interface Positive Excitation Suggested PCB Land Pattern 1.27 mm
1 2 3 4 5 6 7 14 13 12 11 10 9 8
9.2 mm
(SOIC14 Wide Package)
2.2 mm
0.6 mm
Note: Pin numbers , 1, 2, 7, 13,14 are unused.
Manifold Design (All measurements given in mm)
Barbed Fitting Design
Recommended tubing size of 3/32" ID, 7/32" OD, 1/16" wall thickness
Typical Analog Circuits
Circuit layout same as "Ratiometric Voltage Output"
Digital Output Options
Streaming serial output is a 14 bit number proportional to the full scale
2 DATA Byte Packet Digital Bridge Output
V supply +2.7 to +5.5V
S P 2
Start Bit Parity Bit Data Byte Data Bit (Example: Bit 2 1/2 Stop Bit
1 2 3 4 5 6 VS S 7
NP A S ens or
14 13 12 11
S00543210P
Stop
1/2 S76543210P
0.1F V out
Data Byte Bridge High
Data Byte Bridge Low
Stop
1/2
V gate 10 V DD S IG 9 8
Digital Output (NOM) Bridge Readings
G round
Ratiometric Voltage Output
3 DATA Byte Packet Digital Bridge Output with Temperature
S00543210P
Stop
1/2 S76543210P 1/2 S76543210P Stop
V supply +5.5 to +30V MMBF 4392
1 2 3 4 5 6 VS S 7
Data Byte Bridge High
Data Byte Bridge Low
Data Byte Temperature
NP A S ens or
14 13 12 11
Digital Output (NOM) Bridge Readings with Temperature Option: Ask salesperson to stipulate Temperature need
0.1F V out
V gate 10 V DD S IG 9 8
Ordering Information
Model NPA Code 100 300 500 600 Description mV Output, Ratiometric Uncalibrated sensor Analog Amplified Output, 3.3Vdc Excitation, Calibrated sensor Analog Amplified Output, 5Vdc Excitation, Calibrated sensor Digital Serial Output, Calibrated Sensor Code Port Type M Ported Manifold Pressure connection B Barbed Pressure Port N Non ported Manifold Code Pressure Range 010W 10"H20 (2.5 KPa) 001 1 PSI (7 KPa) 005 5 PSI (35 KPa) 015 15 PSI (100 KPa) 030 30 PSI (200 KPa) Code Pressure Type G Gauge D Differential A* Absolute Code Description Blank Plastic Pack T Tape and Reel -
G round
Absolute Voltage Output
V supply +5 to +5.5V J107
1 2 3 4 5 6 VS S 7
NP A S ens or
14 13 12 11
0.1F V out
V gate 10 gate V DD S IG 9 8
G round
Ratiometric Voltage Output with Over-Voltage Protection NPA -
Note: * Absolute pressure ranges are available in 15 PSIA and 30 PSIA only. Contact Factory for custom pressure ranges.
www.gesensinginspection.com
920-477A (c) 2009 General Electric Company. All Rights Reserved. Specifications are subject to change without notice. GE is a registered trademark of General Electric Company. Other company or product names mentioned in this document may be trademarks or registered trademarks of their respective companies, which are not affiliated with GE.

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