Instruction manual

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6.4 Sensor Menu - Conductivity Input
Select the option or type in the values that you want for each of the sections on the page. When
you click on the “Submit” button at the bottom of the page, your changes will take effect. If you
move to another page without clicking “Submit” first, your changes will be lost!
Certain menu sections will only be visible if you have selected certain options in the start up menu.
Type of Sensor
Click the pull-down to select the type of sensor that you have installed. The rest of this section
assumes that you have selected contacting conductivity or electrodeless conductivity.
Warning! The power to the WebMasterONE must be cycled off and back on before the sensor
type change is completely implemented! The detection of the actual type of sensor installed
occurs at power up.
Custom Name
You can rename the input by typing a custom name in the text box provided. This name will
appear as the link to the input page, on the System Summary report, as a choice for relay input
assignments, on data logs, and in alarm messages.
Conductivity Range (only appears if the Type of Sensor is Electrodeless Conductivity)
Click on the radio button to select the conductivity range that matches your electrodeless
conductivity sensor (and also the process to be measured!). The choices are 0 –1000 µS/cm,
0-10,000 µS/cm, 0-100 mS/cm, or 0-1,000 mS/cm.
You must have the correct sensor to match the conductivity range!
Conductivity Units
Click on the radio button to select the units of measure that you want to use. You will have to click
the “Submit” button at the bottom of the page to see more menus that relate to ppm or %
concentration if you change units of measure.
Backup Sensor Mode
The redundant sensor algorithm will allow the user to define a primary sensor to use for control
and a backup sensor. If the primary sensor goes invalid, the backup sensor will automatically take
over control, and the sensor error alarm will activate. If the sensors don’t match each other within
user-defined limits but both are valid readings, control will stop and a Sensor Deviated alarm will
activate. If the backup sensor goes invalid while the primary sensor is OK, control continues but
the sensor error alarm will activate. If both sensors are invalid, control stops and the sensor error
alarms activate.
To select this sensor as the backup sensor, click the Enable radio button, then click on the Submit
button at the bottom of the page. The page will reload showing the status of the sensor as Backup,
and offer additional menus:
Primary Sensor Assignment
This menu only appears if the Redundant Sensor Setting is Backup.
Use the pulldown arrow to select the sensor to use as the primary control sensor. All sensors of the
same type as the backup sensor will appear in the pulldown list.