Sutron 8310 - Page 172

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 172
Convert this ratio to a load by following the Slope and Offset calculation example below.
Slope and Offset Calculation Example
Given the following information (supplied by the sensor’s vendor), calculate the slope
and offset to convert an input of the Bridge Voltage Ratio to an output of pounds.
Full Scale Load or Capacity = 50 lb
Full Scale Output = 3 mV/V (An identical statement from the vendor would be “an
output of 15 mV given an excitation of 5 Volts.”
Zero Load Output = -0.134% of Full Scale (If given, this is found on a calibration sheet.)
A Full Scale Output of 3 mV/V means 3 mV will be measured given a 1 volt excitation.
Slope is the Full Scale Load divided by the Full Scale Output, with a unit converstion from
millivolts to volts.
Multiply the Zero Load Output by the Full Scale Load to determine the offset:
Together, they make the equation:
Field
Value
InputType
Bridge
Module
1
Channel
Analog Input port number
where Analog Signal 1 is wired
Differential
Yes
FullScale
78mV
SettlingTime
100
FilterNotch
60
SwitchedPwr
None
Processing
Slope-Offset
Slope
Calculate slope of sensor
Offset
Calculate offset of sensor
Cal Slope
1
Cal Offset
0