NovaSensor disposable medical pressure sensor
NPC-100 and NPC-120 series

NPC- 100 – NovaSensor Medical Pressure Sensor

NovaSensor’s NPC-100 and NPC-120  Series pressure sensor is specifically designed for use in disposable medical applications. The device is compensated and calibrated per the Association for the Advancement of Medical Instrumentation (AAMI) guidelines for industry acceptability. The sensor integrates a high-performance, pressure sensor die with temperature compensation circuitry and gel protection in a small, low-cost package.

The NPC-100 and NPC-120 Series is manufactured in a class 1000 clean room to minimize possible sources of contamination. A specially designed, silicon, micromachined sensing element is used to meet or exceed all industry requirements, while minimizing assembly and test cost for maximum customer value. Thick-film laser trimming is employed for final compensation and calibration. Sensitivity is maintained to ±1% and linearity is better than 1% in the physiological operating pressure range.

The NPC-100/NPC-120 Series is batch-manufactured in ceramic plate form and shipped as an intact array or as single sensors packaged in Tape and Reel format for easy customer automation. This assembly method draws from well-established manufacturing techniques used in the electronics industry in order to produce a quality, high volume product.

 

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Features

  • Solid state, high reliability
  • Media compatibility
  • High performance
  • Factory filled with dielectric gel
  • Small size
  • Fully tested
  • Temperature compensated
  • Low cost disposable design
  • Designed to AAMI specifications

Applications

  • Medical instrumentation
  • Blood pressure measurement
  • Infusion pumps
  • Kidney dialysis machines

Specifications

ParameterValueUnitsNotes
General
Pressure Ranges –50 to 300 mmHg –0.97 psi to 5.8 psi
Overpressure 125 psi minimum
Electrical @ 72°F (22°C) Unless Otherwise Stated
Input Excitation 1 to 10 VDC Calibrated for 6 VDC
Dielectric Breakdown 10,000 VDC 5
Risk Current 2 μA Maximum (per AAMI), 5
Input Impedance 1800 to 3300 Ω  
Output Impedance 285 to 315 Ω  
Environmental
Temperature
Compensated 15°C to 40°C °C (59° to 104°F)
Operating 15°C to 40°C °C (59° to 104°F)
Storage –25°C to 70°C °C (–13° to 158°F)
Humidity 10 to 90 %  
Light Sensitivity 1 mmHg maximum (per AAMI BP22)
Operating Product Life 168 hours  
Shelf Life 5 years  
Mechanical
Weight <0.0044 lb (<2 g)
Media Interface Medical grade, dielectric gel
Gel Tube Interface Material Polycarbonate

 

ParameterUnitsMinimumTypeMaximumNotes
  1. * All values measured at 6 VDC and 71.6°F (22°C) and after five second warm up unless otherwise specified.
  2. Output of sensor with no pressure applied and a 150 kW resistor shorted across +IN to +OUT.
  3. Over a temperature range of 59°F to 104°F (15°C to 40°C).
  4. Normalized offset/bridge voltage—8 hours after 20 seconds. warm-up.
  5. Previously qualified, not tested in production.
  6. Deviation from straight line drawn through zero and 100 mmHg data points.
  7. These sensors are compatible with ETO (ethylene oxide) sterilization. The user is responsible for establishing and validating suitable process conditions to prevent damage to the sensor.
Performance Parameters*
Offset mmHg –20 0 20  
Sensitivity μV/V/mmHg 4.95 5 5.05  
Calibration mmHg 97.5 100 102.5 2
Symmetry % ±5  
Linearity (–30 to 100 mmHg) mmHg 1 6
Linearity (100 to 200 mmHg) % output 1 6
Linearity (200 to 300 mmHg) % output 1.5 6
Thermal Coefficient Offset mmHg/°C ±0.3 3
Thermal Coefficient Span %/°C ±0.1 3
Frequency Response Hz 1200 5
Phase Shift degrees 5 5
Offset Drift mmHg/8 hrs 1 4,5
NPC-100 port interface
NPC-100 Series pressure sensor port interface
NPC-120 port interface
NPC-120 Series pressure sensor port interface
NPC-100 Series Package Diagram
  1. Tolerances reflect typical flaring during the singulation process.

NPC-100 Series package diagram

NPC-100 Electical Interface
  1. Tolerance on electrical pad location is ±0.010 in (±0.25 mm).
  2. Contact pads are suitable for soldering.
  3. Split pads on +Out and –Out must be connected for proper operation.
  4. All dimensions assume a nominal 0.01 in (0.25 mm) distance between the edge of the solder pads to the edge of the ceramic. This distance will vary slightly from part to part.

NPC-100 Series electrical interface

NPC-100 Series Shipping Configuration
  1. Sensors are shipped as 120 UP snapstrates that must be singulated by the customer.
  2. Each reel or plate may include units that have failed visual or electrical parameters as well as good units. Bad units are identified with a dot on the backside of the cell location.
  3. Reels and plates are shipped in dust free anti-static containers to prevent contamination of the gel surface.

NPC-100 Series shipping
Configuration

NPC-100 Schematic Diagram
NPC-100 Series schematic diagram

Ordering Information

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

Ordering Information

 
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