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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
Unit of Measure

General

Pressure Range1 N/A 0 - 5 psia

Proof Pressure

 N/A 20 psia

Burst Pressure

 N/A >>20 psia

Sensor Type

 N/A Variable Reluctance

Weight

 N/A 13 oz Max

Wetted Materials

 N/A 17-4 PH SST 410 SST Inconel 600

Construction

 N/A TIG Welded Gage Thermally / Electrically Isolated Feet 12-ft Tether to Electronics

Fittings / Ports

 N/A 1/4 Flared Tube Fitting

Electrical

Input Voltage

 N/A 24 - 32 VDC

Output Signal

 N/A 0.0 - 4.0 VDC

Power

 N/A 10 mA Max

Electrical Interface

 N/A MSFC 40M39569 (10-6) Connector

Reverse Polarity Protection

 N/A Yes

Isolation

 N/A >10 MΩ @ 50 VDC

Output Impedance

 N/A <1000 Ω

Environmental

Compensated Temps

 N/A -54 ºC to +93 ºC (Gage Operating -155 ºC to +125 ºC)

Vibration

 N/A 23.5 grms

Shock

 N/A 100 g 30 ms Half Sine

App Media

 N/A Earth Atmospheric Mars Atmospheric

Performance

Static Error Band2

 N/A ±0.5% FSO

Thermal Error2

 N/A ±0.2% FSO
Total Error Band (TEB)2 N/A ±2.5% FSO System Uncertainty
Frequency Response3 N/A -6 dB/Oct Roll-off Flat to 20 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.