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
• Temperature compensated 32°F to 158°F (0°C to
70°C)
• Appliances and consumer electronics
• Ship and marine systems
• High sensitivity, 100 mV FSO with 1.0 mA
excitation
• Aircraft and avionic systems
• 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.
A
-Out
The modular design allows for
R1 a variety of pressure
port modules, which are hermetically weldedD to the
+In and
sensor header module. Standard types A, B, H,
4
J are shown inside.
R2
For compensation of temperature effects, a
B
complete resistor network is supplied on a hybrid
+Out
5
ceramic
design minimizes
3 substrate. The IsoSensor
temperature errors to provide a maximum
offset
R5
error of 0.75% FSO over the 32°F to 158°F (0°C
to
C
R3
2
1
70°C) compensated
range.
-In
R4
A
A
-Out
R1
-Out
R1
D
D
+In
+In
4
4
R6
R2
R2
B
5
3
B
+Out
R5
2
1
R3
+Out
5
3
R5
C
-In
2
1
C
R3
R7
R4
NPI-19 Series Constant Current schematic diagram
R4
NPI-19 Series Constant Voltage schematic diagram
-In
NPI-19 Series Specifications
Parameter
Value
Notes
Pressure Range
NPI 19
NPI-19VC
Maximum Overpressure
0 to 100 kPa
0 to 200 kPa
0 to 700 kPa
0 to 1700 kPa
0 to 15 psi (0 to 1 bar)
0 to 30 psi (0 to 2.07 bar)
0 to 100 psi (0 to 6.89 bar)
0 to 250 psi (0 to 17.24 bar)
0 to 103.4 kPa
0 to 206.8 kPa
0 to 344.7 kPa
0 to 689.4 kPa
0 to 1379 kPa
0 to 2068 kPa
0 to 15 psi (0 to 1 bar)
0 to 30 psi (0 to 2.07 bar)
0 to 50 psi (0 to 3.44 bar)
0 to 100 psi (0 to 6.89 bar)
0 to 200 psi (0 to 14 bar)
0 to 300 psi (0 to 21 bar)
2x
rated pressure
1.0 mA
10 VDC
108 Ω
4,000 Ω
4,000 Ω
5,000 Ω
5,000 Ω
1.5mA maximum
1.5 VDC maximum
@50 VDC
± 20%
± 20%
± 20%
Environmental
Temperature Range
Operating(6)
Compensation
Shock
Life (Dynamic Pressure
Cycle)
-40°F to 257°F
32°F to 158°F
10 gRMs
100 g
1 x 106 Cycles
(-40°C to 125°C)
(0°C to 70°C)
20 to 2000 Hz
11 milliseconds
Min.
Typical
Max.
Notes
Offset
mV
-2
1
2
mV
FSO Output
NPI-19
NPI-19VC
mV
mV
70
99
100
100
130
101
2
2
Linearity
%FSO
-0.25
0.1
0.25
3
Hysteresis and
Repeatability
%FSO
-0.05
0.01
0.05
-0.75
-1.0
0.2
0.2
0.75
1.0
4
4
%FSO
-0.75
02
0.75
4
%FSO
-0.2
0.1
0.2
Thermal Accuracy of Offset
NPI-19
NPI-19VC
%FSO
%FSO
Thermal Hysteresis
5
Short-Term
Stability of
Offset
µV/V
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
6
1. Performance with offset, thermal accuracy of offset, and thermal
accuracy of FSO compensation resistors.
Mechanical
Weight
0.02 lb (10 g)
0.1 lb (45 g)
Media Compatibility
All corrosive media compatible with
316 L stainless steel
Case and Diaphragm
Material
316L stainless steel
Recommended O-Ring
Type A
Type B
Units
Thermal Accuracy of FSO
Electrical @ 77°F (25°C) unless otherwise stated
Input Excitation
NPI-19
NPI-19VC
Insulation Resistance
Input Impedance
NPI-19
NPI-19VC
Output Impedance
Bridge Impedance
Parameter
Performance Parameters(5) Compensated(1)
General(8)
NPI-19A-XXX
NPI-19B/H/J-XXX
0.66 in x 0.039 (16.76 mm x 1 mm) diameter
2-013 per ISO 3601/1
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.
Ordering Information
NPI-19 Series Specifications
NPI-19 NovaSensor Pressure Type (ISO Sensor)
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
201
200 kPa, 1 mA
701
700 kPa, 1 mA
1700 kPa, 1mA
172
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
© 2015 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-920-312C-10/2015