Sintrol S500 Series

Stack and process monitor for dust concentrations

Manage your dust concentrations with ease

  • Universal power supply for 12-24 VDC and 80-240 VAC
  • Automatic range setup
  • Automatic drift compensation
  • 4-20 mA output
  • Vibration has no effect on the reading

Wireless options are available on the 900MHz RF frequency. More about this can be found on our wireless products page.

Snifter S500

The Sintrol S500 series is the most sensitive series of dust monitors ever. The new product line maintains the reliability and robustness of the S300 series and possesses the capability of measuring fugitive dust levels as low as 0.01 mg/m³.

Equipped with a 4–20 mA analog signal output and RS485 interface, S500 is used for trend monitoring. It is installed downstream from a baghouse, cyclone, dryer or other dust collection system to monitor filter performance as well as particulate emissions. It can also be used for process control in applications where the dust levels need to follow designated limits. S500 is designed for use in any process fitted with bag, ceramic, cartridge filters or cyclones where indicative (qualitative) monitoring is required.

With three SPST relays and two independent signal outputs the S500s are also used to detect filter deterioration, blockage or breakage. The alarms can be used for process control (as an ON-OFF system) in flow – no flow situations in bulk solids handling and pneumatic transport applications. Very fast response time, a typical characteristic of these monitors, enables early detection and prevention of expensive product loss to the environment.

Technical Specifications


Measurement Objects Solid particles in a gas flow
Particle Size 0.3 µm or larger
Measurement Range From 0.01mg/m³
Measurement Principle Inductive Electrification
Protection Category IP65
Probe Length (total/measuring) 250 mm (9.8"), 500 mm (19.7"), 750 mm (29.5"), 1000 mm (39.4"), 1250 mm (49.2")
Power Supply Dual power source
12 - 24 VDC
80-240 V (DC or AC)
Power Consumption Approximately 5 W, depending on usage
Wiring Connections - Power Supply DIN PG11 cable gland
Wiring Connections - Output Signals DIN PG11 cable gland
Connectors Spring loaded connectors for all signals
Low voltage connection with 45 degree angle:
Solid wire from 0.2 to 1.5 mm²
Stranded wire from 0.2 to 1.0 mm²
High voltage connection with 0 degree angle:
Solid wire from 0.2 to 4.0 mm²
Stranded wire from 0.2 to 2.5 mm²
USB-B connector to connect to PC
Process Connection Welded socket, hole diameter 22 - 30 mm
Output Signals Isolated 4 - 20 mA output loop
Three SPST relays (240 V / 2 A)
Three solid state relays
Communication Interface Serial communication RS-485
USB
Radio Frequency (RF) (optional)
Communication Protocol Modbus RTU (RS485)
SNT (Sintrol) network (USB, RF, and RS485)
Alarm Settings Set automatically by auto-setup feature. Based on average measured dust flow: 5 times and 20 times of reference dust flow.
User selectable
Signal Averaging Time Default at factory: 100 s
Adjustable from 0 - 6000 s
Alarm Delay Default at factory: 30 s
Adjustable from 0 - 60000 s
Alarm Hysteresis Time Default at factory: 0 s
Adjustable from 0 - 25 s
Process Conditions
Temperature Max 250 C
Pressure Max 300 kPa
Gas Velocity Min. 3 m/s
Humidity max 95 % RH (non-condensing)
Materials and Weight
Probe (wetted part) Stainless Steel (AISI 316L)
Process Connection (wetted part) Stainless Steel (AISI 316L)
Enclosure Pressure Cast Aluminum
Probe Insulation (wetted part) PEEK
Weight (excluding the probe) 1.6 kg
Weight of standard probe
10 mm Diameter x 500 mm
0.8 kg

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