ADS Environmental Services Model 3600 530002 A2 - Manual (Page 33)

3-8 ADS 3600 Flow Monitor O&M Manual
Transmitting Data to the Computer
The monitor stores readings from the sensors at specified time intervals. These
readings are stored until the monitor's memory is full; when the monitor’s memory is
full, new readings begin to overwrite previous ones. (Monitor storage capacity is
discussed in Appendix A.) If the central computer is remotely collecting the data, a
telephone line and a modem are used. If telephone capability is not available, an ADS
certified technician could set up the monitor for direct collection with a portable
computer using a cable attached directly to a serial communication port (also called a
direct connect).
Data collection should be performed on a routine basis. When data is collected over
the telephone, data should be collected a minimum of once a week (twice a week is
recommended). When data is collected through an onsite direct connection, ADS
recommends that data be collected once every one to two weeks. The data should be
reviewed immediately to minimize errors.
QuadraScan software processes the data and generates graphical and tabular reports.
These reports are used to plan improvements and additions to sewer systems, to
improve the accuracy of billing information, and to provide information for the overall
management of municipal sewer systems.
Confirmation
The accuracy of the flow sensor subsystems in a monitor must be confirmed on a
regular basis. Monitor confirmation involves comparing manually-taken readings of
depth of flow and velocity with the monitor's readings for the same values. In addition
to checking monitor accuracy, this process verifies sensor calibrations. Refer to the
QuadraScan User’s Guide for more detailed information on confirmation procedures.