Hach EC1000 Instruction Manual page 32

repeat percentages or values. When all entries are made, return to the Controller MODE
options and select CURVE.
Example—(Assuming PH was selected for the controller MODE)
Press .
ENTER
Select the percent (of reagent addition) for the first point (X axis) by pressing the
key and the
ARROW DOWN ARROW
Press .
ENTER
Select the PH value by pressing the
key.
UP ARROW
The Controller prompts the user to continue entering the percentages and PH values
through nine entries (corresponding to number of points selected). The green LED display
continues to show which point selection is being made at any time even if the user scrolls
back to the beginning of the sequence.
Press then
ENTER CLEAR
The function of the output trim adjustment is slightly different from the rest of the edit
functions. When the zero (minimum scale) trim is selected, the controller output is driven
to zero (minimum scale), and the output value is displayed with the right hand digit
flashing. If the output is too low, pressing and holding the
output to ramp up.
When the output is correct, release the
key. If a large adjustment is required (e.g., adjusting the controller zero
DOWN ARROW
from 4 mA to 0 mA), use the
When the or
UP DOWN ARROW
Press .
ENTER
Press .
ENTER
This is the trim controller zero setting (in terms of mA output).
Press the key or the
DOWN ARROW
Press .
ENTER
key or the
UP ARROW
key and the
RIGHT ARROW
followed by the
DOWN ARROW
key. If the output is too high, use the
UP ARROW
key to move the flashing digit to the left.
RIGHT ARROW
keys are used, the output ramps faster.
key to adjust the output.
UP ARROW
32
RIGHT
key.
key or the
DOWN ARROW
key to advance to:
key causes the
UP ARROW