N E W S   R E L E A S E

               'AQUAGUARD'  MONITORING  &  CONTROL  SYSTEM

The ‘Aquaguard’  monitoring, and control system regulates the quantity of dissolved oxygen in fish ponds in order to prevent stress of the fish and to assure minimum power consumption.  The system consists of multiple dissolved oxygen probes, multiple logic controllers, and a personal computer.  The buoy that supports the probe has a unique heavy duty wiping device that assures a clean probe and sufficient water velocity to produce a fast response.  Multiple buoys may be connected to a single logic controller.  Multiple logic controllers may be connected via radio modem to a central computer.

The control of the dissolved oxygen in the ponds is accomplished in the logic controllers without dependence on the personal computer.  The logic controller receives an upper and lower limit of dissolved oxygen, and a rate-of-change limit from the personal computer as set by the pond operator.  If communication with the personal computer is lost, the logic controller continues to function within the last limits sent to it.  The logic controller will control the aerators between the upper and lower limits and rate-of-change limit with a combination of PPM and percent saturation.  The logic controller will also measure the amps flowing to each aerator and display PPM, temperature, and amps at the pond site.  

A proximity switch is included with each logic controller, the purpose of which is to detect when the pond tender visited the pond. The date and time of each visit is recorded in the logic controller when a metal object is passed over the proximity switch. The logic controller will compare the time of the visit to the time of the last visit to determine if frequency of the visit was within the limits set by the pond operator. If the pond tender did not visit the pond within the specified frequency, an alarm condition will be set.  This date, time, and the alarm condition are transferred to the central computer where they are displayed on the monitor in tabular format and in trend format. In ‘trend’ format the trend line will show a positive spike when the pond tender visited the pond and will show a negative spike when the pond tender failed to visit within the specified frequency.

The personal computer maintains a history of dissolved oxygen in PPM and percent saturation, status of the aerators, amps flowing to each aerator, water temperature, and pond visits.  Data is displayed in table format, trend format, alarm format, and multiple graphic displays.  Historical data for the past year is displayed in trend format. The computer will produce a daily report of amp/hours consumed by each aerator, and accumulated run-hours of each aerator.

The monitoring, and control system will not only control the dissolved oxygen between the set limits, but will enable pond personnel to focus their work time on ponds that have problems.

A fully functional demonstration program is available. 

Unique features of the program are: 

1. Ease of use

2. Low cost

3. Historical data of all variables without compression

4. User defined calculation functions

5. Report generator

For More Information Contact:

Industrial Control Specialists, Inc.
PO Box 6471, Lake Charles LA 70606-6471
Tel: 337-474-3163
FAX: 337-474-7222
Internet: sales@industrialcontrolspec.com