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Home / Instruments / Airspeed Indicators / Radiant Instruments /Radiant Multi Function Instrument ASI / VSI / Altimeter UMFI-22-Gen 2
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Radiant Multi Function Instrument ASI / VSI / Altimeter UMFI-22-Gen 2

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Overview

**NOT FAA APPROVED - FOR USE IN EXPERIMENTAL AIRCRAFT ONLY**


Altimeter + Airspeed + VSI + TAS + OAT + Density Altitude + G-Meter

RADIANT's Universal Multi-Function Instrument (UMFI) is an all-in-one flight instrument for builders who want maximum usefulness in minimum panel space.

In normal operation, UMFI displays indicated altitude, Kollsman setting, indicated airspeed, true airspeed, outside air temperature, vertical speed, and density altitude. Density altitude is always highlighted for quick recognition, and the built-in G-meter adds a useful picture of recent aircraft loading without requiring another instrument hole.

The updated platform gives the builder meaningful setup flexibility. UMFI supports 100 or 200 top-of-scale airspeed range selection, knots or MPH, inHg or hPa Kollsman units, °F or °C temperature display, and customizable airspeed arcs including VSO, VS1, VFE, VF1, VNO, and VNE. The airspeed sensor may also be zeroed and saved to non-volatile memory.

An external temperature probe is included, and UMFI is offered in both 2-1/4 inch and 3-1/8 inch versions for flexible panel installation.

Technical Details

  • Universal Multi-Function Instrument (UMFI) with shared 2026 Radiant platform and interface
  • Available in 2-1/4" and 3-1/8" case sizes
  • Altimeter dial plus digital altitude readout
  • Airspeed dial plus digital airspeed readout
  • True airspeed display
  • Vertical speed display to ±9,999 FPM
  • Settable Kollsman window in inHg or hPa
  • Outside air temperature with included external probe
  • Density altitude display
  • Built-in G-meter with scrolling strip-chart history
  • Selectable airspeed top range: 100 or 200
  • Selectable airspeed units: knots or MPH
  • Selectable temperature units: °F or °C
  • User-settable airspeed arcs: VSO, VS1, VFE, VF1, VNO, VNE
  • Airspeed zero calibration saved to non-volatile memory
  • Brightness control from front panel
  • Designed for experimental, ultralight, and qualifying Light Sport aircraft

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Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is this Radiant altimeter divided in two? Can I separate them and place one above the other?

No this cannot be split apart, but they can flip flop back and forth.

Q: I am confused. Other Radiant instruments on you website indicate their mounting diameter is 2.25. The UMFI-22 only says standard instrument hole which I would assume is 3-1/8. What is the diameter of the UMFI-22?

This gauge is a 2-1/4 mounting hole size which is also standard in instrumentation. Typically instruments will be either 3-1/8 or 2-1/4.

Q: Is the Radiant Multifunction 2 screens side by side or is it one screen with 2 selectable displays?

Per Radiant: "It is one screen and you can advance between the displays."

Q: Is there a manual available? Thanks

Yes, we have added the manual to the web page for download.

Q: Is the diagonal screen size on this Radiant Multi-function instrument the same as on the GEN-2 Universal Airspeed Indicator?

2-3/8 inches

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