MGL Capacitance Fuel Level Senders
MGL Capacitance Fuel Level Senders
Product Overview
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Manufacturer / Model: MGL Avionics (probe made by Centroid Products), sold under part numbers LEVELSND‑12 (12″) and LEVELSND‑24 (24″)
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Lengths Available: 12 inches or 24 inches
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Adjustable:
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Bendable: The probe can be bent within the first 3–5 inches above the mounting base (marked by a black line)
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Cuttable to Length: If shortened, the probe requires additional calibration steps
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Calibration Notes
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If the sender is used at full, uncut length: proceed directly to fuel level calibration in the EFIS—no Empty/Full calibration required.
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If the sender is cut shorter: you must perform a calibration in two stages before EFIS calibration:
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Set EMPTY calibration by applying power with the signal line shorted to ground, wait ~10 seconds (for post‑March 2013 models), then measure a stable 0.3 V output.
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Set FULL calibration by fully immersing the sender in a tank, repeat with jumper, wait ~20 seconds, confirm ~4.0 V output.
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Once sender-level calibration is complete, proceed with the standard fuel‑level calibration in your EFIS system.
Installation & Compatibility
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Wiring:
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Red wire = +11–28 Vdc supply
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Yellow wire = signal output (0.3 V to 4.0 V)
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Black wire = ground
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Compatible with many MGL EFIS and RADAC systems such as the Extreme EMS (signal interpreted in either ohms or voltage mode depending on RADAC switch setting)
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No mechanical floats—ideal for rugged aviation installations and less prone to mechanical failure.
Mechanical & Environmental
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Probe body: concentric tubing (metal inner/outer with polyester or polymer insulators)
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Housing dimensions: approximately 0.72″ tall and 2.625″ diameter
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Materials: corrosion resistant, epoxy‑sealed electronics for durability across a wide temperature range (approx. −40 °C to +85 °C)