User Manual

<16. COMMISSIONING OF SENCOM pH/ORP>
16-12
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
Table16.3 Errorconguration
Display item Description Default
pH too high ThepHvalueexceeds16.00. Warn.
pH too low The pH value is lower than –2.00. Warn.
Temperature too high Measured process temperature is higher than the
maximumlimit.
Warn.
Temperature too low Measured process temperature is lower than the
minimum limit.
Warn.
ORP too high TheORPvalueishigherthan1500mV. Off
ORP too low TheORPvalueislowerthan–1500mV. Off
rH too high The rH value is higher than 100. Off
rH too low The rH value is lower than 0. Off
Matrixcong.error Thetemperaturecompensationmatrixisnotset
properly (see Section 16.2.3).
Fault
Calib.timeexceeded Calibrationtimeexceedsthecalibrationinterval
(see Section 16.2.4).
Off
Wash half-time error The response to wash is abnormal. Off
Impedance 1 too high The sensor must be checked. Off
Impedance 1 too low
Impedance 2 too high
Impedance 2 too low
SENCOMchanged TheSENCOMsensorhasbeenchanged.
This error setting can be set to either Off or Warn..
Warn.
CAUTION
Ifcancelinganerrorcongurationcouldberisky,donotcancelitasadangeroussituationmay
result.
NOTE
The “Impedance 1 too high/too low” and “Impedance 2 too high/too low” error items are displayed
intheErrorcongurationscreen.Ingeneral,forapHsensor,“Impedance1”means“glass
electrode,” and for an ORP sensor, it means “metal electrode.” “Impedance 2” represents the
reference electrode in all cases.
NOTE
Beforeusingsensorswhichdonothaveanytemperaturemeasuringelements,setbothof
“Temperaturetoohigh”and“Temperaturetoolow”toOffonthe“Errorsetting”screen.Duetothe
open input of temperature signal, a false error may happen as if temperature goes over a high
limit or a low limit.
16.5 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.