Inconel 718 and 304L CRES materials are used in our satellite transducers because of their compatibility with caustic propulsion media such as MMH, NOX, MON-3, etc. Most satellite transducer designs manufactured by Tavis utilize a ¼-inch tube stub for orbital tube welding into the spacecraft manifold tubing. The tube stubs are typically seamless 304L or 321; however, some designs incorporate a Titanium-to-304L transition tube for use with Titanium spacecraft plumbing.




Existing designs provide capabilities such as:
  • High pyro shock tolerance for nearby valves and separation nuts
  • Inherent secondary barrier for burst pressure containment
  • High proof and burst pressure capability
  • Connector or pigtail configurations
  • EMI filtering and immunity
  • Compact size
  • Low power consumption for long orbit life requirements
  • Space-grade parts; radiation-hardened components and shielding
  • No mounting feet option, or one-piece case and mounting feet configurations
  • Soldering procedures based on NASA-STD-8739.3
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Unit of Measure
Items
Satellite Propulsion Pressure Transducers-10496

Satellite Propulsion Pressure Transducers-10430

Satellite Propulsion Pressure Transducers-10499

Satellite Propulsion Pressure Transducers-30000
Pressure Range1 N/A 30 psia to 5000 psia N/A 0-200 psia N/A 0 to 550 psia 50 to 400 psia N/A 30 psia to 6000 psia
Proof Pressure N/A 150% FSO to 225% FSO N/A 400 psia N/A 1500 psig N/A >150% FSO
Burst Pressure N/A 250% FSO to 3000% FSO (range dependent) N/A 5000 psig N/A 2500 psig N/A >>200% FSO
Sensor Type N/A Variable Reluctance
Weight N/A 260 gm Max N/A 14.4 oz Max N/A 272 gm Max N/A 255 gm Max
Wetted Materials N/A 304L/321 CRES Inconel 718
Construction N/A Electron Beam Welded Gage Secondary Barrier N/A Electron Beam Welded Gage Secondary Barrier Brazed Tube N/A Electron Beam Welded Gage Secondary Barrier N/A Electron Beam Welded Gage Secondary Barrier
Fittings / Ports N/A 1/4 Tube Stub 0.016 or 0.035 Wall N/A 1/8 Tube Custom Bend 1/8 Flared Fitting N/A 1/4 Tube Stub 0.028 Wall N/A 1/4 Tube Stub 0.035 Wall
Input Voltage N/A 22 - 38 VDC N/A 24 - 33 VDC N/A 22 - 36 VDC N/A 24 - 32 VDC
Output Signal N/A 0.0 - 5.0 VDC0.5 - 5.5 VDC N/A 0.0 - 5.0 VDC N/A 0.5 - 6.0 VDC N/A 0.0 - 5.0 VDC
Power N/A 11 mA Nominal N/A 7 mA Nominal N/A 7 mA Nominal N/A 7 mA Nominal
Electrical Interface N/A 4-Wire Pigtail Hermetically Isolated N/A 2 Twisted Pair Braided Jacket N/A MSFC 40M39569 (10-6) Connector N/A MSFC 40M39569 (10-6)Connector
Reverse Polarity Protection N/A Yes
Isolation N/A >100 MΩ @ 50 VDC N/A >100 MΩ @ 100 VDC N/A >100 MΩ @ 50 VDC N/A >100 MΩ @ 50 VDC
Output Impedance N/A <1500 Ω N/A <1000 Ω N/A <1000 Ω N/A <1000 Ω
EMI N/A CE01, CE03, RE02, CS06, RS03, Inrush MIL-STD-461C & MIL-STD-462 N/A MIL-STD-461C & MIL-STD-462:CE01, CE02, CE03, CE04, RE02, CS01, CS02, CS06, RS02, RS03, Transients, Ripple N/A MIL-STD-461C & MIL-STD-462:CE01, CE02, CE03, CE04, RE02, CS01, CS02, CS06, RS02, RS03, Transients, Ripple N/A MIL-STD-461C & MIL-STD-462:CE01, CE02, CE03, CE04, RE02, CS01, CS02, CS06, RS02, RS03, Transients, Ripple
Compensated Temps N/A 20 ºF to +120 ºF (Operating -65 ºF to +200 ºF) N/A 0 ºF to 250 ºF N/A 11 ºC to 51 ºC (Operating -34 ºC to 71 ºC) N/A -65 ºF to 200 ºF
Vibration N/A 36.9 grms N/A 19.3 grms N/A 13.92 grms N/A 15 grms
Shock N/A 80 g @ 100 Hz 1500 g @ 400 Hz 2500 g @ 2000 to 10000 Hz N/A 4500 g @ 5000 Hz N/A 3100 g @ 8000 Hz N/A
App Media N/A N2H4 N2O4 N/A Hydrazine Combustion Products N/A MON-3 N2H4 N2O4 N/A MON-3 N2H4 N2O4
Static Error Band2 N/A See TEB N/A See TEB N/A See TEB N/A ±0.5% FSO
Thermal Error2 N/A See TEB N/A See TEB N/A See TEB N/A ±0.01%/ºF Max Average
Total Error Band (TEB)2 N/A ±2.0% FSO N/A ±2.0% FSO N/A ±0.055 VDC N/A ±0.5" H2O @ 10" H2O ±1.0" H2O @ 30" H2O
Frequency Response3 N/A N/A Custom: -3 dB @ 20 Hz; Flat to 100 Hz N/A <100 ms N/A <100 ms
  • 1 The designs above are intended to convey just a few capabilities currently used on satellites for discussion purposes. Tavis specializes in custom configurations and capabilities for your specific application. Discuss your application requirements with our engineers for your spacecraft’s long-term success.
  • 2 Many error band definitions and limits are possible, and these actual error bands are too specific to delineate herein. A clear definition and understanding of any error band is critical, and many manufacturers’ published errors or accuracies can be very misleading. Please consult Tavis regarding your specific error band requirements.
  • 3 Frequency Response given is for electronics only. Actual frequency response will depend on pressure range and media.