Sutron 8310 - Page 145

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 145
M6.I1: 0 G
M6.I2: AIO1:1 3.85139 V G
End Inputs
RIGHT more, ENTER measure
The number in parenthesis is the number of inputs configured in measurements. The
diagnostics/inputs menu allows you to view the last measured value for each input along with
the input number and I/O connection information. For many inputs, you can force a live
measurement by pressing SET/ENTER and Calibrate and view the Raw value by pressing RIGHT.
Mx.Ix: I/O Config curvalue > more SET/ENT measure
MxIx: Calibrate
MxIx: I/O Config
MxIx: Raw Val
Calibrate
The 8310 calibrate function built into the 8310 can compute the slope and offset for you if you
are able to place the sensor in known environments. The calibrate function is available from any
menu displaying an input such as in Station Setup/Measurements or Diagnostic/Inputs. The
calibration process is as follows:
1. User selects Calibrate on an input. The system prompts “Enter current value.” The user
enters the current value for the input as determined by some other sensor or
procedure.
2. System measures the input for the first cal point, then prompts, “Two point cal?”
3. If the user selects NO, the system is done with the calibration procedure, computing
only a calibration offset for the sensor.
4. If the user selects YES, the system prompts “Enter second value.” The user will normally
cause some change for the input sensor and then enter the new current value for the
input as determined by another sensor or procedure. The greater the difference
between the two calibration values, the better.
5. System measures the input for the second cal point and then computes both a
calibration slope and offset for the input.
If at any time, a measurement fails, user is told “Cal failed due to measurement failure.”
Note: A single point calibration modifies only CalOffset while a two point calibration modifies
both CalSlope and CalOffset. The calibration slope and offset are kept separate from the
Processing Slope and Offset and applied in order to clearly differentiate between calibration
values and normal operating values.
Diagnostics/Outputs (n)
Outputs (27)