Publication 1746-UM001A-US-P
5-14 Channel Configuration, Data, and Status
Scaled-for-PID to Real Units
Example: #3 A transducer is being used to measure temperature.
The 4 to 20 mA signal range is proportional to 100 to 500°C (212 to 932°F)
The input data is scaled for PID, i.e. input range of 0 to 16383
Input value to convert = 5500
The scaled range is 212 to 932°F
The Input range is 0 to 16383
Find: Input value in °F
Per the equation above:
Proportional Counts to Real Units
Example: #4 A transducer is being used to measure pressure.
The -10V dc to +10V dc signal range is proportional to 0 to 200 psi
The input data is in “Proportional Counts” data format, i.e. -32768 to 32767
Input value to convert = 21567
The Scaled range is 0 to 200 psi
The Input range is -32768 to 32767
Find: Input value in psi
Per the equation above:
Slope
932 212
–
()
16383 0
–
()
--------------------------------0.044==
Offset 212 0 0.044
×()
212=
–=
Scaled Value 5500 0.044
×()
212
454
°
F
=
+=
Slope
200 0
–
()
32767 32768
–
()
–
[]
------------------------------------------------------ 0. 003==
Offset 0 32768 0.003
()
–
()
98.3=
–
=
Scaled Value 21567 003
×()
98.3
163 psi
=+
=
Comments to this Manuals