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<7. COMMISSIONING OF SC (Conductivity)>

7-10

IM 12A01A02-01E 8th Edition : Oct. 01, 2015-00

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 modied 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 conguration

In “Logbook conguration,” the user congures 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 conguration,” 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 specied 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.

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