Dwyer UTS - Manual (Page 12)

To Set the Relay Values for Level or Distance:
Setting the 20 mA/4 mA Levels
Series UT enables you to set height, volume or flow values to be used as 20 mA
and 4 mA marks. These values can be used for remote monitoring of tank level,
volume or flow using an analog meter. The analog output indicates the current
depth in the tank, or the current flow level, as a point on the meter range between
4 mA and 20 mA. The default value for 20 mA is the tank height (or the maximal
volume value), and for 4 mA the default value is 0 (or the minimum volume value).
To Set the 20 mA/4 mA Levels:
The values of 4 to 20 mA are application dependable. For example, when
measuring distance, the value will be in distance (same for level).
Setting the Flow Measurements
The PARSH.FLUM function enables you to set flume/weir types and measurements
for Series UT open channel models. Refer to Chapter 4, Series UT Open Channels,
for further information.
Setting the Tank Height
You can enter the height of your tank using the TANK h function. The default value
is the maximum value in the relevant measurement range for your Series UT (refer
to the range table in Appendix A, Series UT Ranges). If you enter a value that
exceeds this maximum value, an error message is displayed.
Setting the tank height will not influence the measuring range or the accuracy of the
device, which is calculated from the measuring range. Refer to the specifications
tables in Chapter 1, Introducing Series UT.
To Set the Tank Height Value:
Page 11
Press/Action
to enter relay
setup.
to enter open
mode.
Press on the far-
right digit to save
the value.
Display
and
and
Explanation
With the RELAY icon flashing.
Enters the open values mode of the
relay setup. The relay number flashes
throughout the process of defining its
values.
Displays 0 or the previously entered
relay value.
Repeat the previous steps to set an
open/ close values for each relay to be
used.
or
or
NOTES:
The values for 20 mA and 4 mA must be different, otherwise an message
is displayed. Both must also be less than the tank height value, otherwise an
message is displayed.
In both distance and level measurement modes, the dead zone area affects the
maximum values that can be used for 20 mA/4 mA levels. For UTS-X1X-XXX-X
models, the maximum 20 mA/4 mA value is tank height minus 0.6 m/1.9 ft. For
UTS-X2X-XXX-X and UTS-X3X-XXX-X models, the maximum 20 mA/4 mA value
is tank height minus 0.4 m/1.3 ft.
Press/Action
to enter 20 mA
or 4 mA setup.
Display Explanation
With the required option flashing in the
main menu.
Displays the default value or the
previously entered 20 mA or 4 mA value.
Use to enter the new value. (Function
button use is described on
page 6.) or
or
NOTES:
VOLUME values in 4 to 20 mA are represented by six digits (the same applies for
FLOW values). TOTALIZATION values are represented by large numbers and
therefore require two separate screens for high (H) and low (L) numbers (as
explained on page 10).
Figure 14: Tank Height
NOTES:
Whenever the tank height is required, you should enter the distance from the
surface of the sensor to the bottom of the tank. In order to obtain accurate
measurement results, it is most recommended to perform this operation when the
tank is empty. For flow measurement, enter the precise flume height.
If the entered tank height value is less than a value previously entered for the 4
mA, 20 mA or Relay functions, the value for that function will automatically revert
to the default value.
Press/Action
to save the
selected option.
Display
for example.
For example
meters.
Explanation
Select the desired measurement method
from the indication modes: DIST, LEVEL,
DIA. Using NEXT or BACK buttons.
Displays the selected option for a few
seconds and a flashing tank graphic.
Move on with the NEXT button to select
measurement units: METER, INCH,
FEET. Press ENT to save your selection.
Move with NEXT or BACK button to
tank h.
Displays the last saved tank height or
the default value.
Use to enter the new value.
or
or
and
or