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8 Parametrization and calibration
The S303 or S304 requires minimal set-up time to get to regular operating conditions. For trend monitoring
applications, it is enough to run the auto-setup procedure.
During regular operation, the S303 or S304 continuously measures dust concentrations and sets an alarm
signal according to the concentration and pre-set alarm levels.
The adjustment of the parameters can be done by using
The local 4-Key user interface (S303 and S304)
The USB interface and Sintrol protocol for direct connection to a Windows PC. DustTool PC-Software
for parametrization and Setup comes with the instrument.
RS485 (CH-1) to communicate under Modbus RTU to a control system or any Modbus master device
RS485 (CH-0) to communicate under Sintrol Protocol via a commercial RS485 to USB converter to your
Windows PC and Sintrol DustTool software
RF wireless Network communication (optional)
8.1 Relay, LED and Display functional logic
The S303 or S304 has different operational statuses which are indicated to the user by changing the behavior
of the LED, the display or the Relays. These operational statuses are defined as follows:
NORMAL DUST LEVEL AND OPERATION: The instrument operates normally as it has been stetted up
and gives a valid measurement signal. The measurement signal is below the configured trash hold for
the ALERT or ALARM status.
ALERT: The instrument operates normally as it has been stetted up and gives a valid measurement
signal. The measurement signal is above the configured trash hold for the ALERT status (default 5
times the Auto setup dust level) but below the ALARM status.
ALARM: The instrument operates normally as it has been stetted up and gives a valid measurement
signal. The measurement signal is above the configured trash hold for the ALARM status (default 20
times the Auto setup dust level).
AUTO SETUP: The instrument gives NOT a valid measurement signal. It collects dust level data of the
present condition
FAULT, SERVICE: The instrument gives NOT a valid measurement signal. It HAS BEEN SET MANUALLY
INTO Maintenance mode or has detected a faulty behavior, detected by one of the calibration or self-
check functions
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