Hach-Lange SI792(x) E HACH GLI 3700 series SI792(x) T 7MA2200 and 8398 series User Manual - Manual (Page 41)

Operation—4–20 mA/HART
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6. Press CONF and ENTER to exit the configuration menu.
The transmitter remains in HoLD mode for approximately
20 seconds after calibration and returns to the measurement
mode.
5.2.1.1 Time constant of output filter
An averaging filter is available to reduce noise in the output signal. The
filter averages readings over a specified time interval. The time interval
can be set from 0 to 120 seconds (default: 0 seconds).
When set to 0 seconds, there is no signal averaging for noise reduction.
When set to 120 seconds, the current output value will be correspond to
the process signal averaged over the last 120 seconds. Increase the
time interval to reduce the noise in the output signal.
Note: The filter acts on the output signal but not on the displayed value.
5.2.1.2 Output signal during errors
When an error condition occurs, a 22 mA output signal can be sent as
a notification (default: off).