Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 415)

App-46
IM 04L31A01-01E
Appendix 8 Explanation of Engineering Units (EU
and EUS)
The CX2000 uses the following two types of engineering units as units for the internal
data.
The PV is indicated using the engineering unit of the measurement span (the range used
by control within the PV range).
• EU():
Unit indicating the value using the engineering unit where the low and high
limits of measurement span are EU (0%) and EU (100%), respectively.
• EUS(): Unit indicating the amount of percentage the value occupies against the width
of the measurement span using engineering units.
Below is an example of values converted to EU() and EUS().
If the measurement span is set to –200 to 1200 °C, EU (20%) is 80 °C and EUS (20%) is
280 °C.
EU (0%)
= –200 °C
EU (20%)
= 80 °C
EUS (20%)
= 280 °C
EUS (20%)
= 280 °C
EUS (100%)
EU (40%)
= 360 °C
EU (100%)
= 1200 °C
–200 °C 80 °C 360 °C 1200 °C