Case Study

Heritage Systems

Heritage Systems uses CloudDLS to monitor facultative treatment ponds for water reclamation at wineries in and around the Napa Valley. In particular, their PLC-based PondSentry system monitors pond pH and dissolved oxygen as well as ammonia tank levels, and it uses this data to optimize when and for how long energy-hungry pond aerators must run. The result is 50% to 60% reduction in electricity usage while providing reclaimed water that meets state standards in a timely fashion.

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Facultative treatement pond with aerators running

Data Logging

CloudDLS data logging at PondSentry installations provides the data in a timely and cost-effective manner. The following 6 data samples are logged every 5 minutes at a PondSentry installation:

  • Pond 1 and 2 pH
  • Influent pH
  • Pond 1 and 2 dissolved oxygen
  • Ammonia tank level

Since this data is available automatically and nearly instantly on the cloud, it reduces the number of on-site visits the technician must make. Furthermore, it helps the technician detect problems and fine-tune settings.

At PondSentry installations, conventional data loggers (which required expensive loop isolators for some channels) have been replaced with an IsoDataTap and CloudDLU. This reduces expense and simplifies the installation wiring.

Sample Data Logs

daily weekly monthly

Data Reporting

CloudDLS data reporting makes it easy for Heritage Systems to visualize, share and report what is happening at PondSentry installations. Reports and, if necessary, data logs are reviewed daily by the assigned technician to detect any anomalies. Reports are shared with the wineries who own the pond. Every month a report is filed with state regulatory agencies.

Sample Data Reports

daily weekly monthly

Realtime Alerts

CloudDLS realtime alerts are invaluable to Heritage Systems. They provide immediate warning to the technicians that a problem exists and must be fixed. Heritage has SMS alerts set for the following conditions:

  1. A pH or dissolved oxygen reading outside of the expected range
  2. A greater than expected drop in the ammonia tank level within a 25 minute window
  3. No significant change in sensor values within an 8 hour window

Type 3 alerts are used to detect clogged or broken sensors and are not critical. This type of alert will only be sent during working hours. The other alerts are critical and are sent immediately. A sample alert for out of range dissolved oxygen is:

Sample SMS Alert

sitename 12:33 pond2_do >=15.0 now=20.0,20.0,20.0,20.0,20.0=1h40m ago id=7 other=1 Reply u0004.quiet(1) to silence alarms

The alert indicates the site, time and error condition. It also includes a summary history of 5 readings made over the last 1 hour and 40 minutes. A technician replies to this alert with u0004.quiet(1) to acknowledge he will take care of this alert and to turn off alerts for 4 hours. His acknowledgment is sent to all recipients so that they know he has taken responsibility. If the technician would like to see a report with the most recent data, he can send an SMS to the unit, and the report will be uploaded to Google Drive after a few minutes.

If there is some type of failure at a PondSentry installation, it can potentially cost Heritage Systems thousands of dollars if not fixed quickly. CloudDLS realtime alerts help Heritage Systems reduce and even eliminate these costs.

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PondSentry panel with IsoDataTap installed