Instruction manual

53
Current Reading/Calibrate Sys Cond
The current reading is a live reading of the calibrated conductivity of the sample.
To Calibrate the system conductivity, click on the “Calibrate Sys Cond” button and a new window
will appear in your browser. The live conductivity reading will be displayed in the cell labeled
“current value”. Measure the system conductivity with a previously calibrated hand held
conductivity meter, and enter that measured value in the text box called “new value”. Click on the
Submit button to change the calibration. Click the Close button to return to the Conductivity Input
page.
Status
This section is for information only, and lets you know if any alarm conditions exist. Possible
status messages are; Normal (everything is OK), Sensor Error (the sensor signal is not valid), High
Alarm, Low Alarm or Calibration Time. Under Makeup Conductivity, an error message for
Circuit Board Failure is also possible. See section 8.1 for a complete description of error
messages.
Date of Last Calibration
This section is for information only, and lets you know when the last calibration occurred.
Calibration Reminder
If you want to be reminded when the sensor needs calibration, for example every 30 days then type
the desired number of days between calibration in the text box. A value of zero means you will
never be reminded. The highest value allowed is 365 days.
Self Test
The Self Test is used to check the circuitry of the conductivity input. Click on the “Self Test”
button, and the controller will display either Pass or Fail, and also readings of a simulated
conductivity and temperature. If the controller passes self test, and you are having problems
reading the correct conductivity, then the problem must be with the sensor, wiring or installation.
Air Calibration (only appears if electrodeless conductivity sensor is selected)
Remove the conductivity sensor from the system water, make sure that it is dry, and then click on
the “Air Calibration” button. A new window will open prompting you to place the sensor in the air
and click the “Calibrate” button.
ppm Conversion Factor (only appears if ppm selected as the unit of measure)
Type the value that you want to use to convert µS/cm to ppm into the text box. The range allowed
is 0.5 to 1.0 ppm per µS/cm.
Uncalibrated Conductivity
This section is for information only, and shows the conductivity reading without any calibration.
This is helpful in troubleshooting the conductivity sensor.
High Alarm Limit (only appears if Type of Bleed is Based on System Conductivity)
Type in the text box the conductivity (or ppm) above which you a want a high alarm to occur.
Low Alarm Limit (only appears if Type of Bleed is Based on System Conductivity)
Type in the text box the conductivity (or ppm) below which you want a low alarm to occur.