Campbell Scientific PVS4100/4120/4150 Portable Automatic Samplers User Manual

Page 53

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Section 5. Programming

5-13

The display will show a new screen
containing the option title 4-20mA INPUT
on the top line and a 7 digit number with the
leftmost digit flashing as a prompt for input.
The 4-20 mA input will be converted by the
controller to pulses, proportional to the span
of the input, at the rate set in the
specifications. To set the number of pulses
required to be input before a sample program
is started, use the ARROW keys to move
the flashing prompt until it is over the digit
requiring change.

Press a number key (0-9) to replace any
existing number and advance the flashing
prompt to the next digit to change. Replace
digits as required, then press ENTER.

The display will echo the last entry with
<ENTERED>.

Any wrong entries will require re-entry. If
ENTER has not been pressed, reposition the
flashing prompt over the incorrect digit and
replace it. After ENTER has been pressed,
the entire entry must be redone from the
beginning (press SET).

The controller has now been given a new
value for START DELAY. The new values
reside in the NEW ENTRIES area of the
controller memory. To make these changes
active, press the RESTART key, then again
press it to confirm your choice. The
controller will then wait until the required
pulses have been received before starting its
sampling program.

Summary of Sequence:
SET, START DELAY, ARROW(S), ENTER, #######, ENTER,
RESTART, RESTART.

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