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Solid State Isolated Transducers in a Transistor Case

0 to 20 psi, Absolute Pressure

$291.64

Item# PX4600-020AV

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $291.64
5-9 $277.06
10-24 $271.23
25-49 $259.56
50-99 $253.73
100+ $247.89

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Lead Time ( If not in Stock): 6 weeks

0 to 20 psi, Absolute Pressure PX4600-020AV PX4600-020AV
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  • Small, Light Weight, OEM Package
  • Solid State Media Isolation Suitable for use with Most Industrial Fluids and Oils
  • Broad Temperature Compensated Range of -55 to 121°C Yields High Stability with Changing Temperatures
  • Electrical Isolation to 100 MOhms Assures Long Term Reliability
  • Rugged - High Shock and Vibration Design for Commercial Aviation or OEM Applications
  • 100,000 hours MTBF Typical
  • Constant Voltage Operation - Easy to Use
  • Built-In Temperature Sensor Standard

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Pressure Range
Pressure Type
Accuracy Class
Accuracy Value (compensated range)
Output Signal
Electrical Output
Pressure Port Size
Pressure Port Type
Connection/Termination
Operating Temperature Range


Product Specs

  • Accuracy Value 0.25
  • Excitation 10 Vdc
  • Input Resistance 2000 Ω minimum
  • Output Resistance 1000 to 1500 Ω
  • Shock 100 g
  • Wetted Materials Silicon Diaphragm
  • Zero Balance 0 mV ±5% FSO

OMEGA's PX4600 Series consists of accurate, highly reliable pressure transducers suitable for printed circuit board mounting. The small size and light weight of the PX4600 tranducers make them ideal for tough vibration and shock environments. The sensor is a small silicon chip with 4 diffused silicon strain gages. Laser-trimmed resistors provide excellent temperature compensation from -54 to 121ºC (-65 to 250°F), and users can adjust zero balance and span to tight tolerances. The unusually high performance of this transducer comes from a 4-active arm bridge sensor using a micromachined diffused silicon diaphragm and proprietary thin-film media and dielectric isolation barriers.

SPECIFICATIONS
Electrical Excitation: 10 Vdc
Output: 30 mV ±10% @ 10 Vdc
Zero Balance: 0 mV ±5% FSO
Input Resistance: 2000 Ω minimum
Output Resistance: 1000 to 1500 Ω Dielectric Isolation Resistance: 100 MΩ min @ 50 Vdc applied between the case or conductive media and the bridge circuit

PERFORMANCE
Accuracy:
±0.25% FSO combined linearity, hysteresis, and repeatability
Sensing Element: 4-active-arm bridge using a micro-machined diffused silicon diaphragm sensor and thin-film media and dielectric isolation barriers.
Temperature Sensor: Output resistance @ 24°C (75°F) 900 to 1500 Ω
Temperature Coefficient: 8% min, 10% max per 55.5°C (100°F)

ENVIRONMENTAL
Operating Temperature:
-55 to 150°C (-67 to 300°F)
Compensated Temperature: -55 to 121°C (-67 to 250°F)
Thermal Effects:
    Zero: ±0.036% FSO/°C
    Span: ±0.036% FSO/°C
Vibration Sensitivity: At 35 g peak sinusoidal vibration from 10 Hz to 2000 Hz (½' D.A.), the output shall not exceed 0.04% FSO/g for 15 psi range, decreasing to 0.005% FSO/g for 100 psi and above.
Natural Frequency: >35 kHz for 100 psi range
Shock: 100 g, 11 ms half sine wave without damage
MTBF: Typical 100,000 hours @ 55°C (131°F), fixed-wing aircraft service

PRESSURE
Standard Ranges:
0 to 15, 20, 50,100, 200, 300 psi gage and absolute pressure
Proof Pressure: 250% rated pressure, 500 psi max, will not cause changes in performance beyond specified tolerance
Burst Pressure: 300% rated pressure, 500 psi max MECHANICAL
Wetted Parts: Nitride, Pyrex® glass, epoxy and Kovar®
Weight: 5 g (0.2 oz) maximum

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Is it pressurize directly to the backside of the pressure die (no metal diaphragm)? Is it compatible with natural gas air pressure media?

Asked by: Jason9123
Pressure is measured by the small silicon glass diaphragm mounted in the middle of the middle of the internal circuit board. Not rated for use with natural gas
Answered by: JKengineer
Date published: 2020-10-02

The PX4600 specifies an accuracy of +/-0.25% FSO. But the thermal effects across the compensated temperature range, at full scale seem to add an additional 14%. That can't be right? 121°C x 0.036%/°C x 30 mV = 4.257 mV. 4.257 mV / 30 mV=14.19%.

Asked by: Robert52
Thank you for this inquire see below For calculating thermal effects: Use 25°C for reference temperature. Max. compensated temperature is 121°C. Change in temperature is 121 -25 = 96°C. Thermal effect is 0.036% FSO/°C. (Note: this is 0.00036 FSO/°C, using decimal equivalent of percentage.) FSO = 30 mV. Calculating for this change in temperature: 0.00036/°C x 96°C x 30mV = 1.0368 mV 1.0368 mV / 30 mV = 0.03456 or 3.456 % Similarly for Min. compensated temperature of -55°C, Change is temperature is 25 – (-55) = 80°C Calculating for this change in temperature: 0.00036/°C x 80°C x 30mV = 0.864 mV 0.864 mV / 30 mV = 0.0288 or 2.88 % Uncompensated silicon strain gages may have thermal errors of 10 to 20 %.
Answered by: application engineer je
Date published: 2020-12-18

how should this part be tested to ensure hermetic seal is good? how does one know if seal is bad?

Asked by: jake27
Thank you for your question? We will need some more information before this can be answered completely This will be addressed by the engineering depart in detail by email.
Answered by: application engineer je
Date published: 2020-09-10

We purchase several of the PX4600 series transducers from Omegadyne which we solder to our printed circuit boards. Can you provide the specifications for the recommended mounting distance from the PCBA surface and any other specifications for soldering.

Asked by: Darwin
Omega Engineering recommends a minimum of .125 gap between the PX4600 sensor housing and printed circuit board to minimize stress to the glass hermitic seals during temperature swings.
Answered by: Isha
Date published: 2019-10-30
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