User Manual

<7. COMMISSIONING OF SC (Conductivity)>
7-15
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
7.6.3 Auto Return
When no operation is performed for the time set in “Auto Return”, the display returns to the
Monitordisplay(ortotheMaindisplaywhentheMONITORdisplayisdisabled)andtheanalyzer
returns to a normal measuring mode. (When the Trend display is selected, the Auto Return
doesn’twork.)
SelectthetimefromamongDisable,10min,and60min.WhentheAutoReturnfunctionisnot
used,select“Disable.”
NOTE
A default is “10 min”. When maintenance like a calibration that may take much time is performed,
“60min”or“Disable”isrecommendedtobeselected.
7.6.4 Adjust contrast
TheLCDscreencontrastcanbeadjusted.
Pressingthe▲▼keysadjuststhecontrastin11levelsfrom+5to–5(includingthedefaultvalue
of “0”).
7.6.5 MONITOR display
Select “Enable” so that the Monitor display becomes available. A default is “Enable”.
DuringHoldconditionandawarning/faultcondition,theMaindisplayortheHomedisplayis
displayed to indicate the condition.
7.7 Calculated data setup
On this setup, parameters can be set for calculated data.
When two modules are installed on the instrument, the calculated data can be set for conductivity
values or resistivity values measured by two sensors.
On the Calculated data setup screen, select one kind of calculations as shown on the Table 7.4.
Forresistivity,select“Differential”or“Average”.
Table 7.4 Calculation
Function Arithmetic expression Indication *
Differential (value of the sensor 1) – (value of the sensor 2) Diff
Average (value of the sensor 1 + value of the sensor 2) / 2 Ave
Ratio (value of the sensor 1) / (value of the sensor 2) Ratio
Passage(%) (valueofthesensor2)/(valueofthesensor1)x100 Pass
Rejection(%) (valueofthesensor1–valueofthesensor2)/(valueofthesensor1)x100 Reje
Deviation(%) (valueofthesensor2–valueofthesensor1)/(valueofthesensor1)x100 Dev
pHcalc.(VGB) pH=8.6+log{(value of the sensor 1) – (value of the sensor 2) /3} VGB
* ParametersymbolatthebardisplayofanalogoutputwhichisdisplayedatthebottomoftheMaindisplayortheHomedisplay
when a calculated data is selected as a process parameter on the “mA (Output)” setup screen.
Todisplaythecalculatedresult,select“Calculated”ontheDualdisplayscreen.(Section7.6.1.)
(The setting on the “Individual display” has no effect.)
While displaying a calculated data, measurement value of the sensor 1 or sensor 2 can be
checkedontheeachsensor’sdisplaywithpressing
Sensor
1
or
Sensor
2
at the lower right on the Main
display.
SC
7