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B - 54

Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0

Appendix B • Vission 20/20 Application Procedures

Step 4: Instrument Calibration Screen Setup of

Auxiliary Analog Inputs.

Now that the auxiliary analog inputs have been selected

and named, the scaling for the inputs needs to be setup.

Navigate to Instrument Calibration screen page 4 and

setup the auxiliary analog input(s). These inputs are

4-20ma signals and the scaling will be setup so that:

a. The units of this signal are in “percent”.

b. 4 ma signal corresponds to 0% level.

c. 20 ma signal corresponds to a 100% level.

The setup example shown in Figure B-32, Auxiliary #5

Analog Input was setup so that the units of the input will

readout in “percent”. At 4.0ma input, the level percent-

age is equal to 0.0%. At 20.0ma input, the level percent-

age is equal to 100.0%. Setup Auxiliary #6 analog input

in the same way.

Continue to step 5.

Figure B-32. Scaling Setup for Auxiliary Analog Inputs

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