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4 S303 and S304 Overview
The instrument measures total suspended particles (TSP) in a conductive duct or pipe, based on a signal
generated from moving particles. For parameterization and set up, S303 or S304 can be accessed via USB,
RS485 or the optional wireless Radio Frequency (RF) communication with our DustTool software (available
free of charge from our website www.sintrolproducts.com).
The instrument has a standard 4–20 mA output, which can easily be integrated into existing systems such as a
PLC in the control room. By performing the Auto setup feature the normal dust levels are determined and the
two alarm levels are defined to factor 5 and factor 20 of normal dust concentration
The instrument has an isolated probe. Particles passing by crosswise this sensor rod cause a small electrical
charge to pass between the particulate and the sensor. The small electric charges provide signals monitored by
the electronics. The generated signals are proportional to the dust concentration.
The housing is made out of casted Aluminum. The measuring probe is made of stainless steel (316L) and the
insulation material is made out of Ryton R-4 (a Polyphenylene sulfide), commonly used as a high-performance
thermoplastic). For installation, it is equipped with a quick clamp between the instrument and the weld-on
process connection.
4.1 Standard Scope of delivery
The standard scope of delivery of the S303 or S304 includes:
One instrument
One measurement probe, connected to the instrument enclosure
One quick clamp
One quick clamp gasket
One weld-on quick-clamp process connection
DustTool PC Software as a free download at www.sintrolproducts.com
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