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Example – Cooper Instruments & Systems DFI INFINITY Digital Force Indicator/Controller User Manual

Page 33

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These calculated scale factors are the numbers that your meter would display if you connected a signal source.

You must complete the procedure for preparing your meter for scaling as described in Section 8.4.1. Failure to
complete this procedure will result in erroneous readings.

INPUT SIGNAL

LOW VALUE

HIGH VALUE

0-20 mA

000000

020000

4-20 mA

000000

020000

±50 mV

–50000

050000

±500 mV

–50000

050000

0-20 mV

000000

020000

0-30 mV

000000

030000

0-50 mV

000000

050000

0-100 mV

000000

100000

0-1 V

000000

100000

0-5 V

000000

050000

1-5 V

010000

050000

1-6 V

010000

060000

0-10 V

000000

100000

0-50 V

000000

050000

0-100 V

000000

100000

±5 V

–50000

050000

±50 V

–50000

050000

Figure 8-1. Factory Calculated Scale Factors


For the purpose of this procedure, we will use an input of 0-50 mVdc and scale the meter to display 0 to 2500.0.

The calculated scale factors can now be used to scale your meter to display in engineering units using Input Scale
and Offset (“IN.SC.OF”) as follows:

Record your “INPUT1” and READ 1" numbers, and your “INPUT2” and “READ 2” numbers, record them below and
proceed as follows:

Example

INPUT1 =

000000.

READ 1 =

000000.

INPUT2 =

050000.

READ 2 =

025000.


PRESS

THEN PRESS
(TO CHANGE
IF REQUIRED)

UNTIL
DISPLAY
SHOWS

COMMENTS

‘MENU’

“IN.SC.OF”

Press the ‘MENU’ button until the display shows “IN.SC.OF” Input
Scale and Offset.

‘MIN’

“INPUT1”

Press the ‘MIN’ button and the display will show “INPUT1”.

‘MIN’

“XXXXXX”

Press the ‘MIN’ button and the display will show some 6-digit
number.

‘MAX’

‘MIN’

“000000.”

Using the ‘MAX’ button to change the value of the flashing digit
and the ‘MIN’ button to scroll to the next digit to the right, enter
your “INPUT 1” number on the display.

‘MENU’

“READ 1”

Press the ‘MENU’ button and the display will show “READ 1”.

‘MIN’

“XXXXXX”

Press the ‘MIN’ button and the display will show some 6-digit
number.

CF 67

28

M1291/N/0403 11279ML-02 Rev. A