Garmin GI 275 Installation Manual page 161

Shunt - Alternator Load
1. Select the model.
2. The shunt can be calibrated only if it is out of tolerance. For calibration:
a. With the aircraft alternator OFF, select the installed shunt.
b. Reselect the Shunt - Alternator Load.
3. Touch Calibrate to zero the indication.
The displayed shunt value is a static value captured upon entering the Shunt page; if the electrical load
changes, the page must be reloaded to display the new value.
Manifold Pressure
1. Select the sensor (Sensor→ Manifold PRESS).
2. For the Garmin 011-04202-00 and 011-05783-00 sensor configurations, if the displayed manifold
pressure value is incorrect, perform the calibration.
a. Reselect the manifold pressure sensor model, then touch the Calibration. button.
b. Enter the local Barometric Pressure, then touch the Current BARO button.
c. Enter the local field elevation, then touch the Field Elevation button.
d. Touch the Calibrate button.
Fuel Quantity
Select the fuel quantity sensor model (refer to Section 3.4.2 for sensor selection details). Refer to
Section 5.8.3.1 for the calibration procedure.
Fuel Flow
1. Select the sensor model. Most aircraft will use Low for less filtering with a more responsive gauge.
Select Hi if the fuel flow gauge is unsettled (e.g., to smooth carburetor float surges).
2. Enter the nominal fuel flow sensor K-Factor. Use the Floscan 201B-6 sensor configuration for a
JPI P/N 700900-1. Use the Floscan 231 sensor configuration for a JPI P/N 700900-2.
For all aircraft with an existing fuel flow limitation, the EIS fuel flow must be within 10% of actual; refer
to the fuel flow check in Section 6.5.3.6. The pilot can make adjustments in Normal mode, which is limited
to 15%.
Refer to Table 5-23 for the nominal K-factor values.
CAUTION
K-Factor must be in units of pulses per gallon. Different units will result in inaccurate fuel
flow and fuel computer results.
190-02246-14
Rev. 11
GI 275 STC EIS & MFD Installation Manual
Page 5-38