Hach si792 T, User Manual, Page: 40 / 116

Operation—4–20 mA/HART
38
Note: During configuration the instrument/transmitter remains on Hold .
Depending on the configuration the loop current is frozen at its last
value or at a preset fixed value.
Press
ENTER
to access a menu item. Use the
ARROW KEYS
to edit
values. Press
ENTER
to save the settings. If a value is outside of the
acceptable range, “Err” will be displayed and the value will not be
accepted. To exit the menu and return to the measurement mode, press
CONF
and
ENTER
.
Example : Set the output start point for the 4 mA signal to be 10.0 mS
and the output end point to be 100 mS for the 1.20 mA signal.
1. Press
CONF
, enter passcode:
1200
. The display will show Conf and
then out.1MNU .
2. Press ENTER to access the output setup menu. The display will
show CELL .
3. Press
ENTER
,
ENTER
,
ENTER
to reach the 4 mA submenu. The
display will show o1.4mA .
4. Use the UP ARROW and RIGHT ARROW to edit the value to read
10.0 mS value. Press ENTER to save the value. The display will
show o1.20mA .
5. Use the
UP ARROW
and
RIGHT ARROW
to edit the value to read
100.0 mS value. Press
ENTER
to save the value. The display will
show o1.FtME .
Specify the value to output during HOLD periods
o1.FIX 21.0 mA (default)
During HOLD the entered value is
maintained at the output (refer to
section 5.2.1.3 for more information)
1
If “Other” sensor is selected, o1.CELL, o1.SFC and o1.rTD are available
2
If the process variables SAL, % (Conc) or USP are selected the following steps
(Lin/Log) are omitted.
5.2.1 Current output configuration (continued)