Barksdale UDS7-BX - Manual (Page 2)

Bulletin #272391-A 11/5/13
Page 2 of 7
Selecting the Units of measure for the above displayed value:
This menu option allows the user to turn on/off the display of the unit of measure. Selecting “on” will set the unit to display the
unit of measure every 30 s. Selecting “off” will turn off the display.
Setting Switch Point 1:
Standard mode programming:
Here we will discuss the two most common settings for the switch points: STANDARD and WINDOW modes. The “Std” or
standard mode mimics the operation of a mechanical switch. For example, the user can specify ON at 500 psi increasing
pressure, and OFF at 400 psi decreasing pressure. The switch state (ON or OFF) within the range of 400-500 psi will depend
on whether the pressure is increasing or decreasing, as it does in a typical mechanical switch. In window mode “uln”, the user
specifies a range and a switch state within the range. For example, the user can specify ON at 400 psi pressure, and OFF at 500
psi pressure. The switch state within the range of 400-500 psi will be the same regardless of whether the pressure is increasing
or decreasing.
The user can also use this menu to set a delay for the switch-on point “dS1” and for the switch-off point “dr1”. For example,
in a system where the pressure changes rapidly, the user may choose to introduce a delay of anywhere from 0 to 9.9 seconds.
(Zero would imply no delay). This menu also allows inversion “lu1” of the switch state. The switch will change from
normally open to normally closed or from normally closed to normally open. The S1 and S2 LEDs allow the user to see when
the switch points are “ON” and “OFF” for ease of programming and test.
The following example sets switch 1 to turn ON at 500 psi increasing pressure and OFF at 400 psi decreasing pressure:
Press “M” for menu. Using the down arrow, scroll to “SP1”. Press “M” to enter the menu for Switch Point 1. Using the down
arrow, scroll to “Std”. Press “M” to select the standard setting of the switch. Using the down arrow, scroll to “on1”. Press
“M” to enter the menu for setting the switch ON point. Set the switch ON point to 500 psi by using the arrows to change
digits, and the “M” to move from one digit to the next. Once done, the “M” will take the user back to the menu with “on1”.
Press the down arrow to go to the next option, “OF1”. Press “M” to enter the menu for setting the switch OFF point. Set the
switch OFF point to 400 psi by using the arrows to change digits, and the “M” to move from one digit to the next. Once done,
the “M” will take the user back to the menu with “OF1”. Press the down arrow to go to the next option, “dS1”. Press “M” to
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SP1
on1
OF1
dS1
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Und
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