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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 - 2.5 psid to 0 - 5 psid

Proof Pressure

 N/A 15 to 30 psid

Line Pressure

 N/A 80 to 200 psig

Burst Pressure

 N/A 350 to 2500 psig

Sensor Type

 N/A Variable Reluctance

Weight

 N/A 14 oz Max

Wetted Materials

 N/A 304L/321 CRES Inconel 718

Construction

 N/A TIG Welded Gage Nickel Housing 410/321/17-4 PH SST Wetted Materials

Fittings / Ports

 N/A 1/4 Flared Tube Fitting

Electrical

Input Voltage

 N/A 25 - 30 VDC

Output Signal

 N/A 0.0 - 5.0 VDC +6.5/-1.5 VDC Clamp with ± Pressure

Power

 N/A 7 mA Nominal

Electrical Interface

 N/A MS3112/MIL-C-26482 Connector 4-Pin

Reverse Polarity Protection

 N/A Yes

Isolation

 N/A >50 MΩ @ 100 VDC

Output Impedance

 N/A <1000 Ω

Environmental

EMI

 N/A NASA CS-EMC-1A 3001, 3002, 4001, 5001, 5002, 5006, 6001

Compensated Temps

 N/A -65 ºF to +165 ºF

Vibration

 N/A 57 grms

Shock

 N/A 550 g 0.6 ms

App Media

 N/A Non-Corrosive Gases

Performance

Static Error Band2

 N/A ±1.0% FSO

Thermal Error2

 N/A ±2.5% FSO
Total Error Band (TEB)2 N/A Static + Thermal Error Band
  • 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.