Hach-Lange SI792 C, SI792x C, SI792x C-FF, SI792x C-PA User Manual - Manual (Page 39)

Operation—4–20 mA/HART
37
For accurate results use conductivity standards with the same
conductivity range as the sample to calibrate the system.
5.2.1.2 Time averaging 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 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.
5.2.1.3 Output signal during errors
When an error condition occurs, a 22 mA output signal can be sent as
a notification (default: off).
Table 6 Range of concentration
Code Action Range
o1.CoNC
-01- NaCl (default)
0.00–9.99% by weight
0–100 °C (32–212 °F)
-02- HCI
0.00–9.99% by weight
0–50 °C (32–122 °F)
-03- NaOH
0.00–9.99% by weight
0–100 °C (32–212 °F)
-04- H
2
SO
4
0.00–9.99% by weight
0–110 °C (32–230 °F)
-05- HNO
3
0.00–9.99% by weight
0–50 °C (32–122 °F)