NPH-8-007DH

## NPH Series 

Solid State Medium Pressure Sensors 

## Applications 

- Process control, P-to-I converters 

- Pneumatic control systems 

- HVAC controls 

- Biomedical: Infusion pumps, sphygmomanometers, respirators 

- Aerospace: Altimeters, barometers, cabin pressure sensors 

- Computer peripherals 

## 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 

- Typical FSO 100 mV @ 1.5 mA 

- Thermal accuracy FSO 0.4% typical 

- Overpressure capability to five times maximum rated pressure 

- Three standard ranges: 15, 30 and 100 psi (1, 2 and 7 bar) 

- Nonlinearity 0.05% FSO typical 

- Standard 3/16 in OD pressure port 

- Ceramic substrate with temperature compensation resistors 

## **Amphenol Advanced Sensors** 

## 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. 

output stability. Constant current excitation to the sensor produces a voltage output that is linearly proportional to the input pressure. 

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 

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. 

|**Parameter**<br>**Value**<br>**Units**<br>**Notes**<br>**General**<br>Pressure Range<br>0 to 15<br>psi<br>(0 to 1 bar) 0 to 100 kPa<br>0 to 30<br>psi<br>(0 to 2 bar) 0 to 200 kPa<br>0 to 100<br>psi<br>(0 to 7 bar) 0 to 700 kPa<br>Maximum Pressure<br>4x<br>rated pressure(8)<br>**Electrical @ 77°F (25°C) Unless Otherwise Stated**<br>Input Excitation<br>1.5<br>mA<br>2 mA maximum<br>Insulation Resistance<br>108<br>Ω<br>@ 50 VDC<br>Input Impedance<br>4000<br>Ω<br>±20%<br>Output Impedance<br>5000<br>Ω<br>±20%<br>Bridge Impedance<br>5000<br>Ω<br>±20%<br>**Environmental**<br>Temperature Range<br>Operating(9)<br>Compensated<br>Vibration<br>Shock<br>Life (Dynamic<br>Pressure Cycle)<br>–40 to 257<br>32 to 158<br>10<br>100<br>1 x 106<br>°F<br>°F<br>gRMS<br>g<br>cycles<br>(-40°C to 125°C)<br>(0°C to 70°C)<br>20 to 2000 Hz<br>11 milliseconds<br>Mechanical(1)<br>Weight<br><0.2<br>oz<br>(<5 g)<br>Media Compatibility<br>Non-corrosive gases and clean, dry air<br>Wetted Materials<br>Top Port<br>Bottom Port<br>Nickel, gold plated Kovar, silicone gel, gold<br>wire, RTV, silicon and glass.<br>Gold plated Kovar, silicon, glass and RTV (10)|**Parameter**<br>**Units**<br>**Min.**<br>**Type**<br>**Max.**<br>**Notes**|
|---|---|
||**Performance Parameters(7), Compensated(1), 100, 200 and 700 kPa**|
||Offset<br>mV<br>–2<br>1<br>2|
||Full Scale Output<br>mV<br>75<br>100<br>125<br>2|
||Linearity<br>%FSO<br>–0.1<br>0.05<br>0.1<br>3|
||Hysteresis and<br>Repeatability<br>%FSO<br>–0.05<br>0.01<br>0.05|
||Thermal Accuracy of Offset<br>100 kPa<br>%FSO<br>–0.6<br>0.4<br>0.6<br>4<br>200 and 700 kPa<br>%FSO<br>–0.5<br>0.2<br>0.5<br>4|
||Thermal Accuracy of FSO<br>100 kPa<br>%FSO<br>–0.6<br>0.4<br>0.6<br>4<br>200 & 700 kPa<br>%FSO<br>–0.5<br>0.2<br>0.5<br>4|
||Thermal Hysteresis<br>%FSO<br>–0.1<br>0.05<br>0.1<br>5|
||Short-Term<br>Stability of Offset<br>µV/V<br>5<br>6, 11|
||Short-Term<br>Stability of FSO<br>µV/V<br>5<br>6, 11|
||1. Performance with offset , thermal accuracy of offset , and thermal ac-<br>curacy of FSO compensation resistors.<br>2. FSO with 1.5 mA input excitation.<br>3. Best ft straight line.<br>4. 32°F to 158°F (0°C to 70°C) with reference to 77°F (25°C)<br>5. 32°F to 158°F (0°C to 70°C), by design.<br>6. Normalized offset/bridge voltage—100 hrs, typical value, not tested in<br>production.<br>7 All values at 77°F (25°C) and at 15 mA unless otherwise noted|



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

6. Normalized offset/bridge voltage—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. Topside pressure. Backside pressure maximum pressure is 250 psi (17.23 bar) or 4x rated pressure, whichever is less. 

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. 

## NPH Series Specifications 

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NPH Series package diagram 

## NPH Series Specifications 

## Ordering Information 

The code number to be ordered may be specified as follows: **NPH** 

**Code Package Configuration** 8 TO-8 **Code Pressure Range (kPa)** 100 100 kPa; 15 psi (1 bar) 200 200 kPa; 30 psi (2 bar) 700 700 kPa; 100 psi (7 bar) **Code Pressure** A Absolute G Gauge D Differential **Code Compensation** H Hybrid substrate 

NPH        -          ____           _            ____         _         ____           _          ____   Typical model number 

## **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-920-314B-08/2014**