NPI-19H-101AH

## NPI-19 Series Medium Pressure Sensors 

## **Applications** 

## **Features** 

- Process control systems 

   - Solid state, high reliability 

- Hydraulic systems and valves 

   - 316L stainless steel, ISO sensor design 

- Biomedical instruments 

   - ±0.5% static accuracy 

- Refrigeration and HVAC controls 

- Appliances and consumer electronics 

- Ship and marine systems 

- Aircraft and avionic systems 

- Temperature compensated 32°F to 158°F (0°C to 70°C) 

- High sensitivity, 100 mV FSO with 1.0 mA excitation 

- Linearity 0.1% FSO typical 

- Four standard ranges: 0 to 15 psig (0 to 1 bar), 0 to 250 psig (0 to 17 bar) available in gauge or absolute 

- Voltage driven ranges: 15, 30, 50, 100, 200 and 300 psi (1, 2, 3, 7, 14 and 20 bar) gauge and absolute 

- Standard configurations include: 

   - _   1/2 in-20 UNF threaded male port with 1.0 in (25 mm) flange 

   - _   0.74 in (18.8 mm) diameter x 0.28 in (7 mm) long cylinder with o-ring seals 

   - _   1/4 in-18 NPT male port with 7/8 in (22 mm) flange _   1/8 in-27 NPT male port with 7/8 in (22 mm) flange 

**Amphenol Advanced Sensors** 

- Custom configurations and other pressure ranges available. Please consult the factory. 

## NPI-19 Series Specifications 

## Current Driven Medium Pressure, Media Isolated Pressure Sensor 

The NovaSensor NPI Series incorporates state-ofthe-art IsoSensor technology, which gives the OEM user the best in price and performance. 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 measured media by a stainless steel diaphragm and body. As with all NovaSensor silicon sensors, the NPI Series employs SenStable[®] processing technology, providing excellent output stability. 

The modular design allows for a variety of pressure port modules, which are hermetically welded to the sensor header module. Standard types A, B ~~,~~ H, and J are shown inside. 

For compensation of temperature effects, a complete resistor network is supplied on a hybrid ceramic substrate. The IsoSensor design minimizes temperature errors to provide a maximum offset error of 0.75% FSO over the 32°F to 158°F (0°C to 70°C) compensated range. 

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A<br>-Out<br>R1<br>D<br>+In<br>4 R6<br>R2<br>B<br>+Out<br>3 5<br>R5<br>2 1 R3 C<br>-In<br>R7<br>R4<br>**----- End of picture text -----**<br>


_NPI-19 Series Constant Current schematic diagram_ 

_NPI-19 Series Constant Voltage schematic diagram_ 

## NPI-19 Series Specifications 

|**Parameter**|**Value**|**Notes**|
|---|---|---|
|**General(8)**|||
|Pressure Range<br>NPI 19|0 to 100 kPa<br>0 to 200 kPa<br>0 to 700 kPa<br>0 to 1700 kPa|0 to 15 psi (0 to 1 bar)<br>0 to 30 psi (0 to 2.07 bar)<br>0 to 100 psi (0 to 6.89 bar)<br>0 to 250 psi (0 to 17.24 bar)|
|NPI-19VC|0 to 103.4 kPa<br>0 to 206.8 kPa<br>0 to 344.7 kPa<br>0 to 689.4 kPa<br>0 to 1379 kPa<br>0 to 2068 kPa|0 to 15 psi (0 to 1 bar)<br>0 to 30 psi (0 to 2.07 bar)<br>0 to 50 psi (0 to 3.44 bar)<br>0 to 100 psi (0 to 6.89 bar)<br>0 to 200 psi (0 to 14 bar)<br>0 to 300 psi (0 to 21 bar)|
|Maximum Overpressure|2x|rated pressure|
|**Electrical @ 77°F (25°C)**|**unless otherwise stated**||
|Input Excitation<br>NPI-19<br>NPI-19VC<br>Insulation Resistance<br>Input Impedance<br>NPI-19<br>NPI-19VC<br>Output Impedance<br>Bridge Impedance|1.0 mA<br>10 VDC<br>108 Ω<br>4,000Ω<br>4,000Ω<br>5,000Ω<br>5,000Ω|1.5mA maximum<br>1.5 VDC maximum<br>@50 VDC<br>± 20%<br>± 20%<br>± 20%|
|**Environmental**|||
|Temperature Range<br>Operating(6)<br>Compensation<br>Shock<br>Life (Dynamic Pressure<br>Cycle)|-40°F to 257°F<br>32°F to 158°F<br>10 gRMs<br>100 g<br>1 x 106Cycles|(-40°C to 125°C)<br>(0°C to 70°C)<br>20 to 2000 Hz<br>11 milliseconds|
|**Mechanical**|||
|Weight|0.02 lb (10 g)|NPI-19A-XXX|
||0.1 lb (45 g)|NPI-19B/H/J-XXX|
|Media Compatibility|All corrosive media compatible with||
||316 L stainless steel||
|Case and Diaphragm|316L stainless steel||
|Material|||
|Recommended O-Ring|||
|Type A|0.66 in x 0.039 (16.76 mm x 1 mm) diameter||
|Type B|2-013 per ISO 3601/1||



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Parameter Units Min. Typical Max. Notes<br>Performance Parameters [(5)]  Compensated [(1)]<br>**----- End of picture text -----**<br>


|Offset|mV|-2|1|2|mV|
|---|---|---|---|---|---|
|FSO Output||||||
|NPI-19|mV|70|100|130|2|
|NPI-19VC|mV|99|100|101|2|
|Linearity|%FSO|-0.25|0.1|0.25|3|
|Hysteresis and||||||
|Repeatability|%FSO|-0.05|0.01|0.05||
|Thermal Accuracy of Offset||||||
|NPI-19|%FSO|-0.75|0.2|0.75|4|
|NPI-19VC|%FSO|-1.0|0.2|1.0|4|
|Thermal Accuracy of FSO||||||
||%FSO|-0.75|02|0.75|4|
|Thermal Hysteresis||||||
||%FSO|-0.2|0.1|0.2|5|
|Short-Term|µV/V||||6|
|Stability of||||||
|Offset||||||
|Short-Term|µV/V||5||6|
|Stability of FSO||||||
|Long-Term|%FSO||0.1||7|
|Stability of||||||
|Offset||||||
|Long-Term|%FSO||0.1||7|
|Stability of FSO||||||



1. Performance with offset, thermal accuracy of offset, and thermal accuracy of FSO compensation resistors. 

2. FSO with 1.0 mA input excitation, 10 VDC for NPI-19VC. 

3. Linearity by best fit straight line. 

4. 2°F to 158°F (0°C to 70°C) with reference to 77°F (25°C). 

5. 32°F to 158°F (0 to 70°C), by design. 

6. Normalized offset/bridge voltage—100 hours, typical value, not tested in production. 

7. 1 year, typical value, not tested in production. 

8. Consult factory for vacuum applications. 

## NPI-15 Series Specifications 

## Ordering Information 

## **NPI-19  NovaSensor Pressure Type (ISO Sensor)** ~~OTC~~ **Code Pressure Port Type** 

A No port, o-ring seal B 1/2-20 UNF H 1/4-18 NPT J 1/8-27 NPT **Code Pressure Ranges** 101 100 kPa, 1 mA 102 200 kPa, 1 mA 701 700 kPa, 1 mA 015 015 psi (1 bar), 10 V 030 30 psi (2.07 bar), 10 V 050 50 psi (3.44 bar), 10 V 100 100 psi (6.89 bar), 10 V 200 200 psi (14 bar), 10 V 300 300 psi (21 bar), 10 V **Code Description** 

A Absolute 

G Gauge 

**Code  Voltage** H Constant Current Supply (1.0 mA) V Constant Voltage Supply (10 VDC) 

NPI-19 - ____  -   ____ - ____   -   ____  Typical model number 

_NPI-19 Series dimensions_ 

## **Amphenol Advanced Sensors** 

## 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. 

**AAS-920-312B-08/2014**