Yokogawa 2-Wire Dual Channel Transmitter/Analyzer FLXA21 - Manual (Page 102)

<7. COMMISSIONING OF SC (Conductivity)>
7-10
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
NOTE
When setting the error limits of “Conductivity too high” and “Conductivity too low,” enter values
obtained by dividing the conductivity value to be used as a limit value by the cell constant (given
at factory shipment) of the sensor used (conductivity / cell constant). In resistivity measurements,
set a value (resistivity x cell constant).
NOTE
The temperature compensation is not performed around zero. In this case, a warning may be
issued. See “● For all temperature compensation” on App. 2-8.
l USP
The suitable error category for USP<645> monitoring can be set. When this is set, it is checked
whether the non-temperature-compensated conductivity is higher than the limit value directed on
the stage 1 of the procedure described on USP<645>. (Refer to the App.2)
l USP safety margin
The USP<645> monitoring can be modified by this setting. The percentage of the limit value of
USP<645> serves as a safety margin. (Refer to the App.2)
7.4 Logbook configuration
In “Logbook configuration,” the user configures information to be saved to a logbook or initializes
the logbooks.
Logbooks are used to keep an electronic record of events such as error messages, calibrations,
and programmed data changes. By referring to this log, users can, for instance, easily determine
maintenance or replacement schedules.
In “Logbook configuration,” the user can select “Off,” “1-1,” or “1-2” for each item of interest to be
logged. (For sensor 2, select “Off,” “2-1,” or “2-2.”) This can be done for items displayed on the
Settings logbook 1/3 to 3/3 screens. Assigning 1-1 or 1-2 to each item allows information to be
organized and logged in a logbook.
NOTE
Some events such as power-on are saved into the logbook “1-1” or “2-1”. This logbook may be
full earlier. It is recommended that important information be saved into the logbook “1-2” or “2-2”.
For “Erase logbook”, a specified logbook “1-1” or “1-2” can be erased individually.
When the “Warn if logbook full” is set to “Yes”, a warning is given when the logbook come to near
full (maximum 13 pages).
NOTE
When the logbook gets full, the oldest information is erased automatically.