Sintrol S303 / S303 Ex: Continuous Dust Monitor

Sintrol S303 and the explosion-proof S303 Ex are continuous dust monitors that allow plant operators to monitor the performance of their filtration systems over time. They are ideal for installation downstream of any filtration system or in common line channels leading into a plant’s emission points.

– Key Features: Equipped with a 4-20 mA output for continuous dust measurement, helping operators track trends and optimize plant processes.

– Working Principle (Inductive Electrification): Utilizes advanced algorithms and signal filtration, combining DC and AC signals generated by particle contact and proximity to deliver highly accurate dust measurements.

SKU:SI0006

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Features
Specification
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– For duct sizes up to 7000 mm
– Aluminium enclosure with expectational finish quality
– Low maintenance technology
– One-sided installation
– Auto-Setup function
– Extremely wide linear measurement range
– Low detection limit of 0,01 mg/m3
– Multipoint c

Measured objects: Total Suspended Particles (TSP)
Measurement principle: Inductive Electrification
Measurement range: Detection Limit 0,01 mg/m3
Maximum Range: up to several g/m3, depending on operating conditions
Ingress protection: IP66
Power supply requirements:

24 V DC ±10% 1
100 … 240 V AC ±10%, 50 / 60 Hz

Power consumption: Up to 10 W DC / AC
Output signals

2 × Independent SPDT dry contact relays, max. 30 V DC / 5 A or 240 V AC / 5 A, cos φ = 1
Isolated active 4 … 20 mA output loop, max. loop resistance 250 Ω + NAMUR NE 43 compliant alarms

Communication interface

2 × Serial communication RS-485
USB
Radio frequency (RF, Requires optional RF antenna)

Communication protocol:

Modbus RTU (with RS-485)
Sintrol network (with USB, RF and RS-485)

Physical characteristi

Enclosure: Aluminium
Wetted parts:

Probe: Stainless steel (316L)
Insulation: Polyphenylene sulfide (Ryton R-4)

Weight: 1.5 kg (3.3 lb)

Ambient conditions

Temperature: -40 – 60 °C (−40 – 140 °F) / -30 – 60 °C for Ex models
Humidity: Max. 95 % relative humidity (non-condensing)

Process conditions

Temperature:

Max. 300 °C (572 °F) optionally up to 700 °C (1292 °F)
Max. 250 °C (482 °F) with Teflon-coated probe
Max 200 °C for Ex models

Pressure:

Max. 600 kPa (87.02 psi) in temperatures up to 300 °C (572 °F)
Max. 300 kPa (43.51 psi) in temperatures from 300 °C (572 °F) to 700 °C (1292 °F) when
high-temperature process connection is used

Flow velocity: Min. 3 m/s (9.84 ft/s), max. tested 40 m/s (131.23 ft/s)

Wireless communication*

Frequency bands

868 MHz, 15 channels
915 MHz (license-free ISM band)

Transmit power: Up to +23 dBm, user-adjustable
Receiver sensitivity: -110 dBm
Communication protocol: Proprietary Sintrol Network protocol
Typical communication range: (non-line of sight)

868 MHz version
Up to 1000 m (3280 ft) in urban environments**

Hazardous location approvals:

IECEx/ATEX: II 1/2 D Ex ia tb IIIC T200 93°C …201°C Db Ta= -30°C to +60°C
US: Zone 20 A Ex ia ta IIIC T85°C…T201°C Da | CAN: Ex ia ta IIIC T85°C…T201°C Da
US/CAN: CL II, DV 1, GP E, F, G. IS Probe Ta= -30°C to +60°C

* Requires optional RF antenna.
** Surrounding structures and other devices using radio frequencies can have significant effect on RF communication range.

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