User Manual

<4. COMMISSIONING OF pH/ORP>
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IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
4.2.7 Sensor diagnostic settings
This screen is used to set items relating to sensor diagnostics displayed on the screens invoked
by pressing
.
Gauges are displayed for only parameters that have been enabled in “Sensor diag. settings.”
ParameterssettoDisableareprovidedwithabardisplay.
The setting parameters include Input 1 imp., Input 2 imp., Progress time, and Heat cycle.
Wheninputimpedanceisset“High”(section4.2.5),“FINE”valuecanbechanged.Wheninput
impedance is set “Low”, its “High limit” and “Low limit” will be the limits for diagnostic.
Itisalsopossibletosetthe“Badlimits”oftheprogresstimeandheatcycleandthe“Heatcycle
temp” and “Heat cycle time” of the heat cycle.
4.3 Output setup
Thegeneralprocedureistorstdenethefunctionoftheoutput,OutputorSimulate.Then,set
the process parameters associated with the output. On the Output, an output of measured value
is selected. On the Simulate, a simulation value can be set.
And,theparametersforHOLDfunctioncanbesetonthissetting.
l Output
Theoutputsignalisacurrentvaluespeciedbythefollowingparameters.
Process parameter
The available process parameters depend on the selected “Sensor type” on the Sensor setup
and the selected “Measurement” type on the Measurement setup.
The output of the selected process parameter is shown as a bar on the bottom of the Main
displayortheHomedisplay.Anditsparametersymbol(forexample,PH1orDiff-pH)isshown
above the bar, too. When a selected process parameter is displayed as a measurement value,
the top left number or character is turned to be white number or character on black background
(forexample,
or ). (Refer to the section 1.3.)
Process parameters can be selected from among:
pH1,Temperature1,andORP1: 1stmodule’smeasuredvalues
pH2,Temperature2,andORP2: 2ndmodule’smeasuredvalues
Calculated*1andRedundant*2: specialoutputbasedontwoinputs
*1: Refertothesection4.8,Calculateddatasetup.
*2: Refertothe<Redundantsystem>below.
Calculated data and Redundant system are available when two modules are installed on the
instrument. And, these functions are available when the “pH” (or the parameter including pH)
or the “ORP” is selected on the “Sensor type” setting and the “Measurement” type setting. The
parameter for the 1st module and the 2nd module should be the same. For wrong selection, an
error is given.
Whentheprocessparameterissetat“Calculated”of“Redundant”,don’tchangethe“Sensor
type” or the “Measurement” type. If it is changed, the process parameter will go back to the
default.
PH
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