S304 / S304 Ex Dust Monitor

Sintrol S304 is a continuous particulate matter dust monitor that can be calibrated to mass concentration units (mg/m³) output. For applications requiring absolute value measurements of dust concentrations, the S304 can be calibrated to give the user a mg/m³ output. Once calibrated, this dust monitor helps plant operators know exactly how much dust is passing through the stack or outlet duct of their plant.

The S304 is equipped with a 4-20 mA output and two independent alarm relays that can be used to further optimize the process of the plant.

Working principle

When solid particles come in contact or close to an insulated probe they produce a charge to the probe. This phenomenon is then amplified and converted into a proportional signal to the dust concentration. The amplification consists of two signals: DC component occurs when particles come into contact of the sensor (traditional triboelectric signal) and AC signal is generated by particles coming into contact as well as passing nearby the probe. Through advanced algorithms and signal filtration Inductive Electrification provides a very accurate dust measurements output.

Features

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
Can be calibrated to mass concentration
Automatic Zero- and Span-check
Flow velocity compensation
Multipoint calibration
Local four-digit display
Four keys for operation and parameterization
Status LED’s with three colors: green, orange, red
Multiple outputs and connectivity:
- 4-20 mA output
- Two independent SPDT relays
- RS-485 Modbus RTU
- USB

S304 Ex is IECEx, ATEX and Hazardous Locations approved for:

	Zone 20	Zone 21	Zone 22
Inside the duct	X	X	X
Outside the duct in ambient air		X	X

Benefits

Know you dust level in mass concentration in variable process conditions
Confidence in results due to automatic Zero- and Span-checks
Dust Monitor that withstands and lasts with low operating and maintenance costs.
You will need to do one opening into duct or stack and do not have to use time for alignments
Once mechanical and electrical installations are performed in takes only 500 seconds (app. 8 minutes) to commission the dust monitor
Detect changes in dust level from low concentration to high amounts with confidence
Linear response – know your dust level all the time all the way
Choose the way you want to connect. With multiple connectivity options you can choose the most suitable for your location and needs.