YOKOGAWA FA-M3 VITESSE F3CX04-0N, User Manual

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C2-14
IM 34M06H63-01E 1st Edition : July, 2003-00
C2.8 Fixed Biasing
The fixed biasing function adds a constant bias to input values. The resultant values are
used for monitoring.
This function is especially useful when a sensor output is always lower than true values by
a fixed amount due to the physical condition of the sensor. For example, it may be used
when the temperature of a material in a furnace is indirectly determined by measuring the
ambient temperature in the furnace, where a fixed bias is added to the ambient
temperature to represent the temperature of the material. The function is also useful for
rectifying deviations among outputs from different sensors, which are within precision
tolerance, or for correcting the output from a degraded sensor.
Table C2.12 Fixed Biasing Parameter
Data Position Number
Symbol Description Unit Data Range
Default
Value
Attribute Stored
CH1 CH2 CH3 CH4
171 371 571 771 BS Fixed bias Industrial unit -(SH-SL) to (SH-SL) 0 RW
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