EF-Series Instruction Manual
Rev 2/01 2-27
2.7 CALIBRATION
The calibration routines (performed by the configuration software) support 5-point calibration, with
two end points and three mid-points. The low-end or zero reading is calibrated first, followed by the
high-end or full-scale reading. The three mid-points, if desired, can be calibrated next. The diagnostic
analog inputs—battery voltage (E1), charge voltage (E2), and board/battery temperature (E5)—are not
designed to be calibrated.
The built-in inputs that are supported for 5-point calibration are the first three Analog Input points:
♦
Differential pressure located at AI Point A1
♦
Static pressure located at AI Point A2
♦
RTD temperature located at AI Point A3
Since two of the three points are obtained from the Flow Sensor, the calibration procedure for these
inputs is described in Section 4.
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