Calculating The Gain And Offset Of Analog Values - IDEC FL1E-H12RCA User Manual

4.3.6

Calculating the gain and offset of analog values

A sensor is connected to the analog input and converts a
process variable into an electrical signal. This value of signal
lies within the typical range of this sensor.
IDEC SmartRelay always converts the electrical signals at
the analog input into digital values from 0 to 1000.
A voltage of 0 to 10 V at input AI is transformed internally into
a range of values from 0 to 1000. An input voltage exceeding
10 V is shown as internal value 1000.
Because you cannot always process the range of values
from 0 to 1000 as predetermined by IDEC SmartRelay, you
can multiply the digital values by a gain factor and then shift
the zero of the range of values (offset). This allows you to
output an analog value to the IDEC SmartRelay display,
which is proportional to the actual process variable.
Input voltage (in V)
Internal value
Gain
Offset
IDEC SmartRelay Manual
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Parameter
IDEC SmartRelay functions
Minimum
0
0
-10.00
-10000
Maximum
 10
1000
+10.00
+10000
125