IM_1XTXSW-08
www.ueonline.com
11
BASIC FEATURES
Setting the Units of Measure
The One Series allows the units of measure to be set in the field. The default units are pounds per square inch (PSI) for pressure models
and degrees Fahrenheit (
˚
F) for temperature models.
• To change the units of measure, enter the programming mode. Press the left
2
button. The display will scroll SET UNITS.
• Press the right
g
button and the display will read the default units psi or
˚
F.
• Repeatedly press and release the left
2
button to select from the available choices. Stop at the desired choice.
• Press the right
g
button to make the selection. The display will return to “Set Units.”
• Press the left
2
button to continue on in the menu or press both left
2
and right
g
buttons to exit the Programming Mode and
save changes.
NOTE:
MAX/MIN memory is reset (changed to zero) whenever the units of measure have been changed. Set Point, Deadband, Offset,
Span and Plug Port values are recalculated for the newly selected units of measure.
Setting the Switch Mode, Set Point and Deadband for SW1 and SW2 (1XTXSW Only)
Please refer to the Programming Flowchart, page 21. Repeat these steps for SW2.
• Enter the programming mode (see page 10).
• Press and release the left
2
button until SW1 appears on the display.
• Press the right
g
button. The previously selected mode will appear. OPEN RISE is the factory default.
NOTE:
The One Series has six available modes of operation
OPEN RISE - Switch opens on rising process values that exceed the set point.
OPEN FALL - Switch opens on falling process values that drop below the set point
OPEN WINDOW - Switch opens when process values go outside configured limits specified by set point high and set point low.
CLOSE RISE - Switch closes on rising process values that exceed the set point.
CLOSE FALL - Switch closes on falling process values that drop below the set point.
CLOSE WINDOW - Switch closes when process values go outside configured limits specified by set point high and set point low.
Please use the Switch Decision Logic (Figure 13, page 12) for help with setting the appropriate switch mode.
• Press and release the left
2
button until the desired mode appears.
• Press the right
g
button to select the mode and move on to the set point. SP will appear.
NOTE:
The set point is the process value at which the One Series opens or closes the SW1 and SW2 switch. The Set Point is fully programmable
throughout the operating range of the sensor as noted on the device nameplate.
• Press the right
g
button to select a positive or negative set point. POS is the default. Use the left
2
button to change to NEG.
• Press the right
g
button to view and change the set point. Press the left
2
button to increment the blinking digit. Press the right
g
button to enter and move to the next digit.
• Press the right
g
button to enter a new Deadband. DB will show on the display.
NOTE:
The Deadband is the amount above or below the set point at which the One Series resets the SW1 and SW2 switch, returning it to
the normally closed or open state. Deadband is represented as a value which is added or subtracted from set point, depending on the
control mode.
• Example 1: If the Control Mode is OPEN RISE and the set point is 100 and the deadband is 10, the Switch will open as pressure rises
to 100 and close (reset) as the pressure falls to 90.
• Example 2: If the Control Mode is CLOSE RISE and the set point is 100 and the deadband is 10, the Switch will close as pressure rises
to 100 and open (reset) as the pressure falls to 90.
• Example 3: If the Control Mode is OPEN FALL and the set point is 100 psi and the deadband is 10, the Switch will open as pressure
falls to 100 psi and close (reset) as pressure rises to 110 psi.
• Example 4: If the Control Mode is CLOSE FALL and the set point is 100 psi and the deadband is 10, the Switch will close as pres-
sure falls to 100 psi and open (reset) as pressure rises to 110 psi.
NOTE:
Deadband should be set wide enough so that frequent or rapid switch cycling (chatter) does not occur but narrow enough to satisfy
the process conditions. A Deadband value of zero is undefined and, therefore, not permitted.
