Modbus Communication; Patented Ultrasonic Cleaning 1 - Xylem WTW Turb PLUS 2000 Operating Manual

Turb PLUS 2000
Date
6/9/2017
6/9/2017
6/9/2017
The file structure of the logged data will be in Year/Month/Day. At midnight of each day the
current day's file is closed and a new day's file is opened.
NOTICE
For moisture tightness and humidity control, the supplied USB plug
cover must be kept installed firmly when not being used. Failure to
correctly install the plug will affect desiccant life.

7.4.3 Modbus Communication

Modbus protocol communication is operational on all models.

Patented Ultrasonic Cleaning 1

This feature is used to continuously clean the flow through the cuvette. It is not intended to clean
cuvettes that are already dirty or replace manual cleaning entirely. See section 7.7 for instructions
on cuvette cleaning.
The system will increase the time between cleanings dramatically. Please note that the system
requires the use of a special cuvette which is included with the instrument. This cuvette must be
used for the system to operate correctly.
The system works by sending an ultrasonic frequency through spring connections into a piezo
transducer bonded to the bottom of a flow-through cuvette (see figure 10).
The system can detect that an incorrect cuvette is installed, an error has occurred in the
transducer or the transducer is not making contact with the spring connections. This error is
indicated by CLN being posted to the lower screen. Since this is an error condition, this may affect
the 4-20 mA and alarms depending on the setting of the ERLV (4-20 mA) and if an alarm is set up
to Error.
1 U.S. Patent No. 7,808,642
50
Time Reading Units
17:05 0.02 NTU
17:06 0.02 FNU
17:07 0.022 FNU
Alarm 1 Alarm 2
Off Off
Off Off
Off Off
100193 Rev 0 ba77254e01
Operation
11/2020