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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 - 2.5 psid to 0 - 25 psid

Proof Pressure

 N/A +15 psid to +125 psid -150% FS

Line Pressure

 N/A 80 – 200 psig

Burst Pressure

 N/A >350 psig to >2500 psig

Sensor Type

 N/A Variable Reluctance

Weight

 N/A 340 g Nominal

Wetted Materials

 N/A 300 series CRES 400 Series CRES Inconel 600/625

Construction

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

Fittings / Ports

 N/A ¼ Flared Tube Fittings @ 90º

Electrical

Input Voltage

 N/A 22 - 34 VDC

Output Signal

 N/A 0.0 - 5.0 VDC

Power

 N/A 6 mA Nominal

Electrical Interface

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

Reverse Polarity Protection

 N/A Yes

Isolation

 N/A >50 MΩ @ 100 VDC

Output Impedance

 N/A 300 Ω Nominal

Environmental

EMI

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

Compensated Temps

 N/A -65 ºF to +165 ºF

Vibration

 N/A 57 grms Random 40 grms Sine @ 50 - 100 Hz

Media

 N/A All Non-Corrosive

Performance

Static Error Band2 N/A ±1.0% FSO Max

Thermal Error1

 N/A 0.01% FSO/ºF
  • 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.