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Whether monitoring feed line, tank ullage or atmospheric ascent pressures, Tavis transducers continue to provide reliable telemetry for the most critical payload launches. Measurements on the violent first stage, as well as upper stage propulsion pressures, are within reach using our rugged Variable Reluctance (VR) sensors. When success is the only acceptable outcome, consider a customized Tavis VR transducer for your launch requirements.




Existing designs provide capabilities such as:
  • Low ΔP measurements with very high line pressure
  • Severe rocket motor vibration environment
  • High proof and reverse proof pressures
  • Custom frequency response characteristics
  • Extreme cold media interface
  • Wet – Wet capability without the need to coat or protect diaphragm (non-contact, metallic diaphragm without any electrical connections)
Unit of Measure

General

Pressure Range1 N/A 0 - 29 psid 0 - 67 psid

Proof Pressure

 N/A +128 psid +158 psid -25 psid

Line Pressure

 N/A 85 psia / 105 psia

Burst Pressure

 N/A >>263 psia

Sensor Type

 N/A Variable Reluctance

Weight

 N/A 1175 g Nominal

Wetted Materials

 N/A Inconel 600/625

Construction

 N/A Secondary Barrier All-welded Gage Metal Diaphragm Differential Wet - Wet

Fittings / Ports

 N/A KC105-4 Flared Tube Fittings

Electrical

Input Voltage

 N/A 22 - 32 VDC

Output Signal

 N/A -0.300 to 9.700 VDC

Power

 N/A 17 mA Nominal

Electrical Interface

 N/A 6-pin D38999 Series III Connector

Reverse Polarity Protection

 N/A Yes

Isolation

 N/A >100 MΩ @ 100 VDC

Output Impedance

 N/A <500 Ω

Environmental

EMI

 N/A CE01, CE03, CE07, CEXX, RE01, RE02, CS01, CS02, CS06, RS02, RS03, ESD MIL-STD-451

Compensated Temps

 N/A -65 ºF to +172 ºF

Vibration

 N/A 66.2 grms 6.8 g²/Hz @ 625 - 800 Hz

Media

 N/A He, O2, N2

Performance

Static Error Band2 N/A ±0.4% FSO

Thermal Error1

 N/A ±1.5% FSO
Frequency Response3 N/A Custom: -3 dB between 1.75 Hz and 2.65 Hz
  • 1 The designs above are intended to convey just a few capabilities currently used on launch vehicles for discussion purposes. Tavis specializes in custom configurations and capabilities for your specific application. Discuss your application requirements with our engineers – we are here to make your future launches uneventful.
  • 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.