The NovaSensor NPI-15VC Series of voltage-compensated, media-isolated High Pressure Sensors offers the performance of our current-compensated sensors with the convenience of using a voltage supply. Voltage compensation allows the sensor to be connected directly to the power supply, thereby eliminating the need for additional components to construct a constant current source. These sensors enable field interchangeability with a calibrated FSO of 100 mV ±1 %.
As with all NPI media-isolated sensors, they are designed to operate in hostile environments and yet give the outstanding sensitivity, linearity, and hysteresis of a silicon sensor. The piezoresistive sensor chip is housed in a fluid-filled cylindrical cavity and isolated from the measured media by a stainless steel diaphragm and body. The NPI Series employs SenStable® processing technology, providing excellent output stability.
Applications
Features
- Solid state, high reliability
- High sensitivity with 100 mV ± 1% FSO at 10 VDC
- 316L stainless steel, IsoSensor design
- Linearity 0.1% FSO typical
- Thermal accuracy 0.2% FSO typical
- Four standard ranges: 500, 1000, 3000, and 5000 psi (34.5, 69, 207, and 345 bar) available in absolute or sealed gage
- Various standard configurations
- Custom configurations and other pressure ranges available. Please consult factory.
Specifications
| General | Value | Units | Notes |
| Pressure Range | 0-500 | psi | 3447 kPA |
| 0-1000 | psi | 6894 kPA | |
| 0-3000 | psi | 20,682 kPA | |
| 0-5000 | psi | 34,470 kPA | |
| Maximum Pressure | 2x | rated pressure | |
| Electrical @ 77°F (25°C) unless otherwise stated | Value | Units | Notes |
| Input Excitation | 10 | VDC | 15 VDC maximum |
| Insulation Resistance | 100M | Ω | @ 50 VDC Input |
| Input Impedance (min) | 4,000 | Ω | |
| Output Impedance | 5,000 | Ω | ± 20% |
| Bridge Impedance | 5,000 | Ω | ± 20% |
| Environmental | Value | Units | Notes |
| Operating(9) Temperature Range | –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 2000Hz |
| Shock | 100 | g | 11 milliseconds |
| Life (Dynamic Pressure Cycle) | 10 x 106 | cycles | |
| Mechanical(1) | Value | Units | Notes |
| Weight | 0.06 | lb | (28 g) NPI–15A–XXX |
| 0.10 | lb | (47 g) NPI–15B/H/J–XXX | |
| Media Compatibility | All corrosive media compatible with 316 stainless steel | ||
| Case and Diaphragm Material | 316L stainless steel | ||
| Recommended O-Ring | Type A: 0.472 in (12 mm) ID x 0.059 in (1.5 mm) wall | ||
| Type B: 2-013 per ISO 3601/1 | |||
| Parameters | Units | Min | Typical | Max | Notes |
| Performance Parameters | psi | 1000 | 3000 | 35000 | 1, 8 |
| Full Scale Output | mV | 99 | 100 | 101 | 2 |
| Linearity | %FSO | –0.35 | 0.1 | 0.35 | 3 |
| Hysteresis and Repeatability | %FSO | –0.05 | 0.01 | 0.05 | 3 |
| Thermal Accuracy of Offset | %FSO | –1.0 | 0.2 | 0.75 | 4 |
| Thermal Accuracy of FSO | %FSO | –0.75 | –0.2 | 0.75 | 4 |
| Thermal Hysteresis | %FSO | –0.2 | ±0.1 | 0.2 | 5 |
| Short-Term Stability of Offset | µV/V | 5 | 6 | ||
| Short-Term Stability of FSO | µV/V | 5 | 6 | ||
| Long-Term Stability of Offset | %FSO | 0.1 | 7 | ||
| Long-Term Stability of FSO | %FSO | 0.1 | 7 |
| Notes |
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