Model: 123A21

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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)

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Measurement Range (for ±5V output)250 psi1724 kPa 
Useful Overrange (for ± 10V output)500 psi3448 kPa[3] 
Sensitivity (±15 %)20 mV/psi2.90 mV/kPa 
Maximum Pressure5000 psi34475 kPa 
Resolution0.005 psi0.034 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 Hz0.50 Hz 
Non-Linearity≤1.0 % FS≤1.0 % FS[1] 
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 Temperature10000 °F5538 °C 
Maximum Shock10000 g pk98070 m/s² pk 
Output Polarity (Positive Pressure)PositivePositive 
Discharge Time Constant (at room temp)≥1.0 sec≥1.0 sec 
Excitation Voltage20 to 30 VDC20 to 30 VDC 
Constant Current Excitation2 to 20 mA2 to 20 mA 
Output Impedance≤100 Ohm≤100 Ohm 
Output Bias Voltage8 to 14 VDC8 to 14 VDC 
Housing Material17-4 Stainless Steel17-4 Stainless Steel 
Electrical ConnectorIntegral CableIntegral Cable 
Weight4.23 oz120 gm 
Helium Flow Rate (at 1,500 psi)40 scf/hr1.13 m³/hr 
Cable Length4 ft1.2 m 
Water Flow Rate (at 50 psi)1.2 gal/min4.5 L/min 

All specifications are at room temperature unless otherwise specified.


Product 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.
070A08Cable adaptor (micro 10-32 jack to BNC jack)(1)
065A15Seal, .624" OD x .553" ID x .080", brass(3)
Optional Versions:
No optional versions
Product Documents
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