Hach-Lange SI792 P, SI792x P, SI792x P-FF, SI792x P-PA User Manual - Manual (Page 38)

Operation—4–20 mA/HART
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To exit the configuration mode at any time, press CONF and then
ENTER . The output current will be held for 20 seconds and the
measured value will be displayed.
Note: During configuration the transmitter remains in the Hold mode for
safety reasons. The loop current is held at the value specified in the
o1.HoLD menu option. The Sensoface icon is inactive. The
configuration mode indicator is displayed (
Figure 11 on page 33 ).
5.2.1 Output configuration
An overview of the 4–20 mA output setup menu is shown in Table 7 .
Table 7 Output setup menu—out.1 MNU
Select the parameter
o1.UniT
pH (default) o1.EL (electrode)
Glass (default for EU version)
ISFET
pHD (default for standard ver-
sion; for pHD and LCP sensors)
ORP
Specify the value for the 4 mA signal ( section 5.2.1.1 )
o1.4mA
Enter the pH value (–2.00 to 16.00 pH; default: 0 pH)
Enter the ORP value (–1999 to 1999 mV; default: 0 mV)
Specify the value for the 20 mA signal ( section 5.2.1.1 )
o1.20mA
Enter the pH value (–2.00 to 16.00 pH; default: 14 pH)
Enter the ORP value (–1999 to 1999 mV; default: 14 mV)
Set time averaging filter for reducing noise ( section 5.2.1.2 )
o1.Ftme Enter the time in seconds (0 to 120 seconds; default: 0 seconds)
Send a 22 mA signal during errors ( section 5.2.1.3 )
o1.FAil
On
Off (default)
Specify the value to output during HOLD periods ( section 5.2.1.4 )
o1.HoLD
LAST measured value (default)
FIXed
Enter the fixed value to output in mA (3.8 to 22 mA;
default: 21 mA)