Model : 123A21 | Pressure Sensor, ICP®

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Rocket motor ICP® pressure sensor, 250 psi, 20 mV/psi, Helium bleed, water-cooled

  • Measurement Range: 250 psi (1724 kPa)
  • Sensitivity: (±15%)20 mV/psi (2.90 mV/kPa)
  • Low Frequency Response: (-5%)0.50 Hz
  • Resonant Frequency: >=25 kHz (>=25 kHz)
  • Electrical Connector: Integral Cable
  • Weight: 4.23 oz (120 gm)
English: SI:
Performance
Measurement Range (for ±5V output) 250 psi 1724 kPa
Useful Overrange (for ± 10V output) 500 psi 3448 kPa [3]
Sensitivity (±15 %) 20 mV/psi 2.90 mV/kPa
Maximum Pressure 5000 psi 34475 kPa
Resolution 0.005 psi 0.034 kPa [2]
Resonant Frequency ≥25 kHz ≥25 kHz [4]
Rise Time (Reflected) ≤20 µ sec ≤20 µ sec [4]
Low Frequency Response (-5 %) 0.50 Hz 0.50 Hz
Non-Linearity ≤1.0 % FS ≤1.0 % FS [1]
Environmental
Acceleration Sensitivity ≤0.002 psi/g ≤0.0014 kPa/(m/s²)
Temperature Range (Operating) -100 to +250 °F -73 to +121 °C [5]
Temperature Coefficient of Sensitivity ≤0.03 %/°F ≤0.054 %/°C
Maximum Flash Temperature 10000 °F 5538 °C
Maximum Vibration 2000 g pk 19600 m/s² pk
Maximum Shock 10000 g pk 98070 m/s² pk
Electrical
Output Polarity (Positive Pressure) Positive Positive
Discharge Time Constant (at room temp) ≥1.0 sec ≥1.0 sec
Excitation Voltage 20 to 30 VDC 20 to 30 VDC
Constant Current Excitation 2 to 20 mA 2 to 20 mA
Output Impedance ≤100 Ohm ≤100 Ohm
Output Bias Voltage 8 to 14 VDC 8 to 14 VDC
Physical
Housing Material 17-4 Stainless Steel 17-4 Stainless Steel
Diaphragm Invar Invar
Sealing Epoxy Epoxy
Electrical Connector Integral Cable Integral Cable
Weight 4.23 oz 120 gm
Helium Flow Rate (at 1,500 psi) 40 scf/hr 1.13 m³/hr
Cable Length 4 ft 1.2 m
Water Flow Rate (at 50 psi) 1.2 gal/min 4.5 L/min
* All specifications are at room temperature unless otherwise specified
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Specification Notes


[1] Zero-based, least-squares, straight line method.
[2] Typical.
[3] For +10 volt output, minimum 24 VDC supply voltage required. Negative 10 volt output may be limited by output bias.
[4] With helium flow.
[5] Applies to internal amplifer, not to external housing.
[6] See PCB Declaration of Conformance PS023 for details.


Accessories


Supplied
070A08 Cable adaptor (10-32 jack to BNC jack) 1
065A15 Seal, 0.624" OD x 0.553" ID x 0.080" thk, brass (for Series M121Axx & 123A) 3