Sensor Constants
Each sensor is defined by a set of calibration constants, also
known as sensor constants. The two constants, multiplier
and adder, are used to derive an accurate measurement
from the sensor’s output signal. The multiplier is also known
as slope or span. The adder is also known as the offset or
zero point.
When using Smart Sensors, these constants are stored in
the Smart Sensor’s memory and automatically read by the
770MAX. If using a pulse input flow sensor, consult the
sensor instruction manual for guidance in entering these
values.
These constants are re-calculated during calibration. See
Chapter 6: Calibrating and Verifying for calibration
instructions.
NOTE: The calibration constant “multiplier” is a value unique
to an individual sensor. It is not the same as a units
multiplier, which indicates the factor of ten by which the
displayed readings must be multiplied (e.g., 2 K = 2000).