Tavis satellite transducers have provided propulsion measurements for journeys to orbit other planets, while other Tavis instruments have actually landed on planetary surfaces or measured pressures as the spacecraft plummets through other solar system atmospheres.









Previous hardware for missions to Mars, Jupiter, Venus and the Moon have featured one or more of the following:
  • Very low barometric pressure measurements with high proof
  • Severe thermal environments
  • Tether cable for thermal separation between gage and electronics
  • Low power consumption
  • Long-term stability over thermal environments
  • Ice, sand, dust immunity
  • High-cycle power on-off
  • Spores bake-out
  • Zero Outgassing
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Unit of Measure
Items
Interplanetary Exploration Pressure Transducers-10484

Interplanetary Exploration Pressure Transducers-10283

Interplanetary Exploration Pressure Transducers-10568

Interplanetary Exploration Pressure Transducers-10257
Pressure Range1 N/A 0 - 0.174 psia 0 - 15 psia N/A 0 - 2.5 psid to 0 - 5 psid N/A 0 - 5 psia N/A 0 - 0.01 psid to 0 - 11 psid
Proof Pressure N/A 20 to 30 psia N/A 15 to 30 psid N/A 20 psia N/A >150% FSO
Line Pressure N/A N/A 80 to 200 psig N/A N/A 20 psid or 200% FSO
Burst Pressure N/A >200 psia N/A 350 to 2500 psig N/A >>20 psia N/A >>200% FSO
Sensor Type N/A Variable Reluctance
Weight N/A 454 gm Max N/A 14 oz Max N/A 13 oz Max N/A 3.5 lb Max
Wetted Materials N/A 17-4 PH SST 410 SST N/A 304L/321 CRES Inconel 718 N/A 17-4 PH SST 410 SST Inconel 600 N/A 17-4 PH SST 410 SST Inconel 600
Construction N/A TIG Welded Assy Mounting Feet Low-Pressure Metallic Diaphragm N/A TIG Welded Gage Nickel Housing 410/321/17-4 PH SST Wetted Materials N/A TIG Welded Gage Thermally / Electrically Isolated Feet 12-ft Tether to Electronics N/A TIG Welded Assembly Large Diameter Metallic Diaphragm for Excellent Low Pressure Signal
Fittings / Ports N/A 1/4 Flared Tube Fitting
Input Voltage N/A 24 - 36 VDC N/A 25 - 30 VDC N/A 24 - 32 VDC N/A 20 - 40 VDC
Output Signal N/A 0.0 - 5.0 VDC N/A 0.0 - 5.0 VDC +6.5/-1.5 VDC Clamp with ± Pressure N/A 0.0 - 4.0 VDC N/A 0.0 - 5.0 VDC
Power N/A 10 mA Max N/A 7 mA Nominal N/A 10 mA Max N/A 10 mA Max
Electrical Interface N/A MSFC 40M39569 (10-6) Connector N/A MS3112/MIL-C-26482 Connector 4-Pin N/A MSFC 40M39569 (10-6) Connector N/A MS3116 (10-6) Connector
Reverse Polarity Protection N/A Yes
Isolation N/A >50 MΩ @ 50 VDC N/A >50 MΩ @ 100 VDC N/A >10 MΩ @ 50 VDC N/A >100 MΩ @ 100 VDC
Output Impedance N/A <1000 Ω N/A <1000 Ω N/A <1000 Ω N/A <100 Ω
EMI N/A MIL-STD-461 RE02, RS03, CE01, CE03, CS01, CS02, CS06, TT01 N/A NASA CS-EMC-1A 3001, 3002, 4001, 5001, 5002, 5006, 6001 N/A N/A Basic Capacitor Filter
Compensated Temps N/A -50 ºC to +50 ºC (Operating -65 ºF to +200 ºF) N/A -65 ºF to +165 ºF N/A -54 ºC to +93 ºC (Gage Operating -155 ºC to +125 ºC) N/A -65 ºF to +165 ºF (Operating -65 ºF to 200 ºF)
Vibration N/A N/A 57 grms N/A 23.5 grms N/A 20 g pk
Shock N/A 100 g 30 ms Half Sine N/A 550 g 0.6 ms N/A 100 g 30 ms Half Sine N/A 20 g 11 ms Half Sine
App Media N/A Earth Atmospheric Mars Atmospheric N/A Non-Corrosive Gases N/A Earth Atmospheric Mars Atmospheric N/A Non-Corrosive Fluids
Static Error Band2 N/A ±0.5% FSO N/A ±1.0% FSO N/A ±0.5% FSO N/A ±0.5% FSO
Thermal Error2 N/A ±0.01% FSO/ºF Average Max N/A ±2.5% FSO N/A ±0.2% FSO N/A ±2.0% FSO
Total Error Band (TEB)2 N/A Static + Thermal Error Band N/A Static + Thermal Error Band N/A ±2.5% FSO System Uncertainty N/A Static + Thermal Error Band
Frequency Response3 N/A -1 dB @ 5 Hz -3 dB @ 10 Hz N/A N/A -6 dB/Oct Roll-off Flat to 20 Hz N/A Flat ±5% to 250 Hz
  • 1 The designs above are intended to convey just a few capabilities previously used on interplanetary craft for discussion purposes. Tavis specializes in custom configurations and capabilities for your specific application. Discuss your application requirements with our engineers for your exploration science needs.
  • 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.