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Technical content

Features

  • Solid state, high reliability
  • 316L stainless steel, ISO sensor design
  • ±0.5% static accuracy
  • Temperature compensated 32°F to 158°F (0°C to 70°C)
  • 125 mV typical FSO on current version
  • 75 ±1 mV FSO on voltage version
  • Thermal errors less than 2% FSO
  • Two standard ranges: 0 to 2.5 psig (0 to 172 mBar) 0 to 5 psig (0 to 345 mBar)
  • Standard configurations include: 0.74 in (19 mm) diameter x 0.28 in (7.1 mm) long cylinder with o-ring seals
  • Custom configurations and other pressure ranges available. Please consult the factory.

Applications

  • Process control systems
  • Hydraulic systems and valves
  • Biomedical instruments
  • Refrigeration and HVAC controls
  • Appliances and consumer electronics
  • Ship and marine systems
  • Aircraft and avionic systems NPI media isolated sensors 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 measured media by a stainless steel diaphragm and body. The NPI Series employs SenStable® processing technology, providing excellent output stability. It is available in either a constant current or constant voltage version. The modular design allows for a variety of pressure port modules, which are hermetically welded to the sensor header module. There are other standard port styles available. Please consult NovaSensor for more details. Amphenol Advanced Sensors

Constant Current (1.5 mA) Constant Voltage (10 V) Value Notes Value Notes General Pressure Ranges 5 PSI 0 to 5 psi (0 to 345 mbar) 34.5 KPa 0 to 5 psi (0 to 345 mbar) 34.5 KPa Maximum Overpressure 3x pressure rated 3x pressure rated Electrical @ 77°F (25°C) unless otherwise stated Input Excitation 1.5 mA maximum 2 mA maximum 10 VDC 12 VDC Insulation Resistance 10 8 Ω @ 50 VDC 108 Ω @ 50 VDC Input Impedance 4000 Ω typical 10,000 Ω typical Output Impedance 5000 Ω ±20% 5000 Ω ±20% Bridge Impedance 5000 Ω ±20% 5000 Ω ±20% Environmental Compensated Temperature 32°F to 158°F (0°C to 70°C) 32°F to 158°F (0°C to 70°C) Operating Temperature 14°F to 176°F (-10°C to 80°C) 14°F to 176°F (-10°C to 80°C) Storage Temperature -40°F to 257°F (-40°C to 125°C) -40°F to 257°F (-40°C to 125°C) Mechanical Weight 0.02 lb (10 g) NPT-19A-XXX 0.02 lb (10 g) NPT-19A-XXX Media Compatibility All corrosive media compatible with 316 L stainless steel All corrosive media compatible with 316 L stainless steel Case and Diaphragm Material 316L stainless steel 316L stainless steel Compensated Performance (1.5 mA) (10 VDC) Parameter Notes Units Minimum Type Maximum Units Minimum Type Maximum Offset mV -2 ±1 2 mV -2 ±1 2 Full Scale Output

2.5 PSI mV 50 125 200 mV 72 75 78

5 PSI mV 50 125 200 mV 74 75 76

Thermal Accuracy of Offset 2.5 PSI %FSO -2 ±0.5 2 %FSO -2 ±0.5 2 3 Thermal Accuracy of FSO 2.5 PSI %FSO -2 ±0.5 2 %FSO -2 ±0.5 2 3 Thermal Repeatability 1. Performance with offset, thermal accuracy of offset, and thermal accuracy of FSO compensation resistors. All values measured at 77°F (25°C) and at 1.5 mA constant current or 10 VDC, unless otherwise noted. 2. Includes Linearity (BFSL), pressure hysteresis and repeatability errors. 3. 32°F to 158°F (0°C to 70°C) with reference to 77°F (25°C). 4. Consult factory for vacuum applications.

Ordering Information

0.05 in (1.4 mm) Ø 0.74 in (18.8 mm) minimum Ø 0.745 in (18.9 mm) maximum Ø 0.56 in (14.2 mm) 0.46 in (11.8 mm) minimum 0.53 in (13.58 mm) maximum 0.2 in (5.05 mm) 0.12 in (3.05 mm) O-ring area* Tig weld Flat 2 in (50 mm) long nylon flex cable (standard) Port type A has no internal and external chamber for welding Spacer Ceramic substrate -Out +In +Out -In A D B C Pin number 4 connected to chip substrate. -Out +In +Out -In A D B C Constant current schematic diagram Constant voltage schematic diagram The code number to be ordered may be specified as follows: NPI-19 NovaSensor Pressure Type (ISO Sensor) Code Pressure Port Type A No port, o-ring seal Code Pressure Range 021 2.5 psi (172 mbar), 1.5 mA 002 2.5 psi (172 mbar), 10 V 031 5 psi (345 mbar), 1.5 mA 005 5 psi (345 mbar), 10 V Code Description G Gauge Code Tolerance H Constant Current Supply (1.5 mA) V Constant Voltage Supply (10 VDC) *Uses o-ring 0.66 in ID x 0.039 in (16.76 mm x 1 mm) cross section.

www.amphenol-sensors.com © 2014 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice. Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners. Amphenol Advanced Sensors