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  • NovaSensor NPH Series | Solid State Low Pressure Sensor

NovaSensor NPH Series | Solid State Low Pressure Sensor

    Pressure Sensors

Nova Sensor NPH Solid State Low Pressure Sensors

NovaSensor NPH Series of Solid State Low Pressure Sensors consist of an integrated circuit silicon sensor chip housed in a standard TO-8 electrical package that is printed circuit board mountable.

The latest techniques in micromachining have been used to ion-implant piezoresistive strain gauges into a wheatstone bridge configuration that is integrally formed on a micromachined silicon diaphragm. As with all NovaSensor silicon sensors, the NPH Series employs SenStable® processing technology, providing excellent output stability. Constant current excitation to the sensor produces a voltage output that is linearly proportional to the input pressure.

The user can provide standard signal conditioning circuitry to amplify the 100 mV output signal. The sensor is compatible with most non-corrosive gases and dry air. A laser-trimmed, thick-film resistor network on a hybrid ceramic substrate provides temperature compensation.

 

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  • Applications
  • Features
  • Specifications
  • Product Documents
  • Part Nos.

Applications

  • Process control, P-to-I converters
  • Pneumatic control systems
  • HVAC controls
  • Biomedical: Infusion pumps, sphygmomanometers, respirators
  • Aerospace: Altimeters, barometers, cabin pressure sensors
  • Computer peripherals
  • Features

    • Solid state, high reliability
    • Standard TO-8 package suitable for PC board mount
    • Low cost, small size
    • Available in gauge, absolute, and differential pressure versions
    • Media compatible with non-corrosive gases and dry air
    • Thermal accuracy FSO 0.5% typical
    • Overpressure capability to five times maximum rated pressure
    • Three standard ranges: 0 to 10 inH2O (0 to 25 mbar), 0 to 1 psi (0 to 0.06 bar), and 0 to 5 psi (0 to 0.34 bar)
    • Nonlinearity 0.05% FSO typical
    • Standard 3/16 in OD pressure port
    • Ceramic substrate with temperature compensation resistors

    Specifications

    Parameter Value Units Notes
    Pressure Range 0 to 10 in H(sub>2O (0 to 25 mbar) 0 to 2.5 kPa
      0 to 1 psi (0 to 7 bar) 0 to 7 kPa
      0 to 5 psi (0 to 0.34 bar) 0 to 30 kPa
    Maximum Pressure 5x   rated pressure (10)
    Electrical @ 77°F (25°C) Unless Otherwise Stated      
    Input Excitation 1.5 mA 2 mA maximum
    Insulation Resistance 100 MW @ 50 VDC
    Input Impedance (12) 3200 W ±25%
    Output Impedance 5000 W ±20%
    Bridge Impedance 5000 W ±20%
    Environmental      
    Temperature Range      
    Operating(9) –40 to 257 °F (-40°C to 125°C)
    Compensated 32 to 158 °F (0°C to 70°C)
    Vibration 10 gRMS 20 to 2000Hz
    Shock 100 g 11 milliseconds
    Life (Dynamic Pressure Cycle) 1 x 106 cycles  
    Mechanical (1)      
    Weight <0.2 oz (<5 g)
    Media Compatibility Non-corrosive gases and clean, dry air
    Wetted Materials      
    Top Port Nickel, gold plated Kovar, silicone gel, gold wire, RTV, silicon and glass.
    Bottom Port Gold plated Kovar, silicon, glass and RTV(9)

     

    Parameter Min. Typical 2.5 kPa Max. Min. Typical 7 & 30 kPa Max. Units Notes
    Performance Parameters(7), Compensated(1)                
    Offset -8 2 8 -4 2 4 mV  
    Full Scale (FS) Output:                
    2.5 kPa 25 50 90       mV 2
    7 kPa       50 75 150 mV 2
    30 kPa       75 100 125 mV 2
    Linearity –1.0 0.1 1.0 –0.25 0.05 0.25 %FSO 3
    Hysteresis & Repeatability -0.2 0.05 0.2 -0.2 0.05 0.2 %FSO  
    Thermal:                
    Accuracy of Offset -3 0.5 3 -2 0.5 2 %FSO 4
    Accuracy of FSO –3 –1 3 -1.5 -0.5 1.5 %FSO 4
    Thermal Hysteresis –0.75 0.5 0.75 –0.5 0.2 0.5 %FSO 5
    Short-Term Stability of Offset   5     5   µV/V 6, 11
    Short-Term Stability of FSO   5     5   µV/V 6, 11

    Notes:

    1. Performance with offset, thermal accuracy of offset, and thermal accuracy of FSO compensation resistors.
    2. FSO with 1.5mA input excitation.
    3. Best fit straight line.
    4. 32°F to 158°F (0°C to 70°C) with reference to 77°F (25°C).
    5. 32°F to 158°F (0°C to 70°C), by design.
    6. Normalized offset/bridge voltage —100 hrs, typical value, not tested in production.
    7. All values measured at 77°F (25°C) and at 1.5 mA, unless otherwise noted.
    8. Reduced performance outside compensation range.
    9. Backside differential tube is nickel or Kovar.
    10. Top side pressure.
    11. Typical specifications are for reference only; absolute values may vary.
    12. For NPH-8, 2.5 kPa gauge (G) and differential (D) sensor, the input impedance is 3400 +/-30%.

    Product Documents

    English

    NovaSensor NPH | Solid State Low Pressure Sensor - Datasheet

    • Download

    NovaSensor Application Spotlight | MEMS Pressure Sensor Solutions for Industrial Applications - Application Spotlight

    • Download

    English

    Amphenol Advanced Sensors | Connecting Your World Through Sensing Innovations - OEM Product Catalog

    • Download

    Part Nos.

    Part Number Description
    NPH-8-002.5-A-H TO-8 Package Configuration, Range: 2.5kPa; 10 in H2O, absolute pressure 
    NPH-8-002.5-G-H TO-8 Package Configuration, Range: 2.5kPa; 10 in H2O, gauge pressure 
    NPH-8-002.5-D-H TO-8 Package Configuration, Range: 2.5kPa; 10 in H2O, differential pressure 
    NPH-8-007-A-H TO-8 Package Configuration, Range: 7kPa; 1 psi, absolute pressure 
    NPH-8-007-G-H TO-8 Package Configuration, Range: 7kPa; 1 psi, gauge pressure
    NPH-8-007-D-H TO-8 Package Configuration, Range: 7kPa; 1 psi, differential pressure
    NPH-8-030-A-H TO-8 Package Configuration, Range: 30kPa; 4.35psi, absolute pressure 
    NPH-8-030-G-H TO-8 Package Configuration, Range: 30kPa; 4.35psi, gauge pressure
    NPH-8-030-D-H TO-8 Package Configuration, Range: 30kPa; 4.35psi, differential pressure

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