Electronics International MVP-50T - Manual (Page 46)

The tanks must be calibrated with the wings level and the aircraft
set for level flight pitch. Start with the tanks empty.
“Fuel Tank”: This field selects the fuel tank to be calibrated.
You can switch between tanks any time during the calibration
cycle.
Note: The tanks must be calibrated in US gallons. However, fuel
levels may be displayed in other units by changing the “Display
Units” field in the “3. Redlines, Limits and Color Setup” screen
(found in the “3. Redlines, Limits and Color Setup” screen.
“Current Sensor Count”: This is the output count measured on
the fuel level probe. A sensor count represents a fuel level. The
calibration process below associates a sensor count to a fuel level.
“Calibration Filter”: When fuel is added to the tank the sensor count will increase. When you stop adding fuel to
the tank the sensor count will continue to climb for a short period of time and then stop climbing. If the sensor count
does not settle out (continues to jump up and down), increase the “Calibration Filter.” The higher the Calibration
Filter the more stable the counts will be and the longer it will take for the sensor counts to settle out.
“Calibration Points, Qty, Sensor Count, Use Current Count?”: Start with an empty tank. Wait for the
“Current Sensor Count” to settle. Select the Empty “Calibration Point.” Transfer the “Current Sensor Count” to
the “Sensor Count” field by selecting YES in the “Use Current Count?” field.
Use the same process for each Calibration Point. You may want to use ¼, ½ and ¾ tank levels for calibration
points 2, 3 and 4. You may set a Calibration Point at any desired fuel level but each successive Calibration Point
must have a “Qty” and “Sensor Count” the same or higher than the previous one. Ideally, the sensor counts should
increase more than 5 counts for every gallon of fuel added to the tank.
You can use as few as two Calibration Points (Empty and Full). For any Calibration Point you do not use, set the
“Qty” and “Sensor Count” to the same settings as the previous “Calibration Point.”
6.11 “Pressure Altitude Calibration” Screen:
This screen allows you to calibrate the Pressure Altitude function using a traceable Air Data Tester connected to the
aircraft’s pitot-static system. Calibrate each altitude as shown on the screen starting with -1,000 ft and ending with
40,000 ft. Adjust the offsets so the “PR ALT” (shown in the red box) matches the Air Data Tester at each
calibration point.
The Temp Compensation value is written on each transducer. Only change this value if the altitude transducer is
changed.
A Vertical Speed Indicator (VSI) reading is calculated from the Pressure Altitude function. The “VSI Filter” sets the
response time of the VSI reading. Increasing the “VSI Filter” decreases the VSI reading response time. A setting
of 5 is standard.
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