User Manual

<4. COMMISSIONING OF pH/ORP>
4-3
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
4.1 Sensor setup
“Sensor type” setup is determined by the sensor to be connected to the instrument. Select one of
the following three sensor types:
pH: Only pH is measured. The glass electrode (input 1) is connected to terminal 15
and the reference electrode (input 2) is connected to terminal 13.
ORP: OnlyRedoxismeasured.Themetalelectrode(input1)isconnectedtoterminal15
and the reference electrode (or glass) (input 2) is connected to terminal 13.
pH+ORP: BothpHandORParemeasuredsimultaneously.Theglasselectrodeisconnected
to terminal 15, the reference electrode to terminal 13, and the metal electrode to
terminal 14. This setup also allows rH to be measured.
Forbestresults,connectaliquidearthtoterminal14.Fordetailsofthewiringconnections,
seeSection2.5.1.Ifthereisnoliquidearth,thesensordiagnosticfunctionisdisabled;setallof
“Impedance1toohigh/low”and“Impedance2toohigh/low”in“Errorconguration”toOffsothat
no related error is caused.
NOTE
The selection of “Sensor type” determines the menu structure throughout the instrument.
WhenpH+ORPisspeciedasthesensortype,theobjectundermeasurementwillbedisplayed
at the top of “Measurement setup.”
IfthesensortypeischangedfrompHtoORP,partoftherelevantsetupisreset,requiring
reconguration.
WhenORPisspecied,andwhenanORPsensordoesn’thaveanytemperatureelement,
setbothof“Temperaturetoohigh/low”in“Errorconguration”toOffsothatnorelatederroris
caused. (Refer to the section 4.4.) Without temperature input, a temperature shown on the Main
displayortheHomedisplayisthemaximumortheminimumtemperatureofthetemperature
element’srangesetontheTemperaturesettings.Settingin“Displaysetup”canmake
temperature value on the display not to be displayed. (Refer to the section 4.7.)
4.2 Measurement setup
This section describes how to set up various parameters relating to measurements.
Measurements are performed based on the measurement parameter setup.
For measurement setup, part of the menu structure of settable items changes depending on the
“Sensor type” selected in “4.1 Sensor setup.”
4.2.1 Measurement
If “pH” or “ORP” is selected in “Sensor type,” a measurement type does not need to be selected
and it is not displayed.
If“pH+ORP”isselectedin“Sensortype,”vemeasurementtypescanbeselectedforthe
“Measurement” item at the top of the Measurement setup screen. Select a suitable measurement
type for the application.
Moreover,associateditemsareaddedtoparametersin“Errorconguration,”“Displaysetup,”
etc.;checkthesettingconditionofeachitem.
PH
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