57
Sensor Offset
Only appears if the Electrode selection is Linear. Enter the offset of the sensor in
mV if 0 mV is not equal to 0 units.
For Ion Selective Electrodes, the Sensor
Offset is not calculated until the first calibration is performed, and the sensor
will read Zero until a calibration has been successfully completed!
Low Range
Enter the low end of the range of the sensor
High Range
Enter the high end of the range of the sensor
Smoothing Factor
Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Cable Length
The controller automatically compensates for errors in the reading caused by
varying the length of the cable.
Gauge
The cable length compensation depends upon the gauge of wire used to extend the cable
Units
Type in the units of measure for the input, for example, ppm.
Electrode
Select the type of electrode to be connected. Select Linear if the sensor slope is a
linear voltage per Units. Select Ion Selective if the electrode voltage output is loga-
rithmic, defined as “mV/decade”.
Name
The name used to identify the sensor may be changed.
Type
Select the type of sensor to be connected.
5.2.8
Corrosion Input
ONLY AVAILABLE IF A CORROSION INPUT BOARD IS INSTALLED
Input Details
The details for this type of input include the current corrosion rate, alarms, status, current stage in the measurement
cycle, the elapsed time in the current cycle, the raw (uncalibrated) corrosion rate, the number of days in service of
the electrodes, the calibration offset, the date of last calibration, and the type of input.
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms
Low-Low, Low, High and High-High Alarms limits may be set.
Deadband
This is the Alarm Deadband. For example, if the High Alarm is 10, and the
deadband is 0.1, the alarm will activate at 10.01 and deactivate at 9.9.
Replace Corrosion Elec-
trode
Used to reset the timers for both the “Electrode Alarm” and the “Stabilization
Time”.
Stabilization time
Provides a control lock-out during the initial period of high readings when the
electrode is changed. Set to 0 hours to disable.
Electrode Alarm
Set a reminder, in days, for when to replace the electrode tips.
Reset Calibration Values
Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm
To get an alarm message as a reminder to calibrate the sensor on a regular
schedule, enter the number of days between calibrations. Set it to 0 if no reminders
are necessary.
Alarm & Datalog
Suppression
If any of the relays or digital inputs are selected, any alarms related to this input
will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor
Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
