NovaSensor NPH Series

NovaSensor NPH Series

NPH Medium Pressure Sensors

An integrated circuit silicon sensor is 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 the 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.

Application
  • Level sensing
  • Automotive systems
  • Process control
  • Pneumatic controls
  • Hydraulic systems

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
General
Pressure Range 0 to 15 psi (0 to 1 bar) 0 to 100 kPa
0 to 30 psi (0 to 2 bar) 0 to 200 kPa
0 to 100 psi (0 to 7 bar) 0 to 700 kPa
Maximum Pressure 4× rated pressure(b)
Electrical @ 77°F (25°C) Unless Otherwise Stated
Input Excitation 1.5 mA 2 mA maximum
Insulation Resistance 109 Ω @ 50 VDC
Input Impedance 4000 Ω ±20%
Output Impedance 5000 Ω ±20%
Bridge Impedance 5000 Ω ±20%
Environmental
Operating Temperature Range(a) -40 to 257 °F (-40°C to 125°C)
Compensated Temperature Range 32 to 158 °F (0°C to 70°C)
Vibration 10 gRMS 20 to 2000 Hz
Shock 100 g 11 milliseconds
Life (Dynamic Pressure Cycle) 1 × 106 cycles
Mechanical(b)
Weight <0.2 oz (<5 g)
Environmental 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(c).

Performance Parameters(b) Units Minimum Typical Maximum Notes
Offset mV -2 1 2
Full Scale Output mV 75 100 125 2
Linearity %FSO -0.1 0.05 0.1 3
Hysteresis and Repeatability %FSO -0.05 0.03 0.05
Thermal Accuracy of Offset
100 kPa %FSO -0.6 0.4 0.6 4
200 and 700 kPa %FSO -0.5 0.2 0.5 4
Thermal Accuracy of FSO
100 kPa %FSO -0.6 0.4 0.6 4
200 to 700 kPa %FSO -0.5 0.2 0.5 4
Thermal Hysteresis & Stability
Thermal Hysteresis %FSO -0.1 0.05 0.1 5
Stability of FSO μV/V 5 6,11
Short-Term Stability of FSO μV/V 5 6,11
  1. Performance with offset, thermal accuracy of offset, and thermal accuracy of FSO compensation resistors.
  2. FSO with 2.5 mA input excitation.
  3. Linearity is the maximum deviation from linearity.
  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. Meets or exceeds requirements after 100 hrs, typical value, not tested in production.
  7. All values at 77°F (25°C) and at 1.5 mA, unless otherwise noted.
  8. Backside pressure. Backside pressure maximum pressure is 250 psi (17.23 bar) or 175 kPa, whichever is lower.
  9. Reduced performance outside compensation range.
  10. Backside differential tube is nickel or Kovar.
  11. Typical specifications are for reference only; absolute values may vary.

Product Documents

Part Numbers
Part Number Description
NPH-8-100-A-H TO-8 package configuration, Range: 100kPa; 15 psi , Absolute
NPH-8-100-G-H TO-8 package configuration, Range: 100kPa; 15 psi, Gauge
NPH-8-100-D-H TO-8 package configuration, Range: 100kPa; 15 psi, Differential
NPH-8-200-A-H TO-8 package configuration, Range: 200kPa; 30 psi, Absolute
NPH-8-200-G-H TO-8 package configuration, Range: 200kPa; 30 psi, Gauge
NPH-8-200-D-H TO-8 package configuration, Range: 200kPa; 30 psi, Differential
NPH-8-700-A-H TO-8 package configuration, Range: 700kPa; 100 psi, Absolute
NPH-8-700-G-H TO-8 package configuration, Range: 700kPa; 100 psi, Gauge
NPH-8-700-D-H TO-8 package configuration, Range: 700kPa; 100 psi, Differential
NPI-12-101GH 15psi (1.03 bar)
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