User manual

Page 182 Theory of Operation – PAT700 Total Organic Carbon Analyzer
Operator Manual Anatel
to a radio antenna mounted on a substrate. The RFID tag is attached to the bottom of the
standards bottle. The microchip contains data about the standard contained in the bottle. The
PAT700 OASIS system contains four RFID reader/writers permanently mounted inside the
analyzer that align with the bottle RFID tags when the bottles are fully loaded in the analyzer.
The reader/writer retrieves the data stored on the RFID tags located on the bottom of the
standards bottles. The RFID reader/writers have antennas that emit radio waves and receive
signals back from the tags on the standards bottles. The information provided from the tag
includes the identity of the standard, the standard's concentration, date of expiration and other
pertinent data. The reader/writer takes the data received from the tag and passes the
information in digital form to the PAT700 processor.
The RFID system in the PAT700 can read and write to the RFID tags attached to the
standards bottle. The writing feature allows the PAT700 to write data to the bottles showing
that the bottle has been used and provides for writing of data for the exclusive excursion
sampling feature. The RFID system in the PAT700 does not require any user intervention to
operate.
The system operates automatically when bottle tests are performed. The system
automatically turns on and off to read and write data only when necessary. When enabled, the
radio frequency modulation emitted from the antennas is fixed at 13.56 Mhz. Since the RFID
labels on the standards bottles contain the data necessary for each standard, the labels must
not be removed from the bottle. Without the label, the RFID reader/writer has no data to read
and will not operate as intended; however, bottles without labels can be run if the user
manually enters data.
A touch-screen interface provides access to all analyzer functions. The user interface consists
of a home screen from which all user operations initiate. The home screen displays the
current status of the analyzer and analysis results based on the current run mode selection.
The software can display data in a number of user-selected formats, including TOC,
compensated and uncompensated conductivity, resistivity, and temperature in engineering
units, with data logging and graphing of the data.
You may connect a USB flash drive to the analyzer and download the contents of the data
buffer, audit trail, alarm log, and bottle analysis reports. You can interact with the analyzer
remotely, including downloading data records, by querying the analyzer through an RS-232
communications port. You can communicate with the analyzer using Modbus® protocol via
the Ethernet port. Printing may be done automatically or on demand through an RS-232 port
to a serial printer.
The PAT700 allows for compliance to 21 CFR Part 11 with password protection and an audit
trail of all user actions.