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NPH-8-007-D-H Datasheet(PDF) 2 Page - Amphenol Corporation |
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NPH-8-007-D-H Datasheet(HTML) 2 Page - Amphenol Corporation |
2 / 4 page NPH Series Specifications Description An integrated circuit silicon sensor chip 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 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. NPH Series schematic diagram Parameter Value Units Notes General Pressure Range 0 to 10 inH2O (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 M Ω @ 50 VDC Input Impedance 3200 Ω ±25% Output Impedance 5000 Ω ±20% Bridge Impedance 5000 Ω ±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 Bottom Port Nickel, gold plated Kovar, silicone gel, gold wire, RTV, silicon and glass. Gold plated Kovar, silicon, glass and RTV (9) 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. 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 |
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