Dust monitor ambient air environments

sintrol ambient dust monitor dumo

Continuous dust monitor for trend monitoring in ambient air environments

With increasing demands for workplace health the ability to measure changes in ambient air dust concentration becomes more important by the day. All areas where dust might cause harm to employees or sensitive devices can now be monitored and dust extraction systems operated accordingly.

Dumo brings Sintrol’s unique Inductive Electrification Technology made famous by the Snifter and S300 series to ambient dust monitoring. With the 4…20 mA isolated output, two user adjustable independent alarm relays and full compatibility with Sintrol Network and DustTool with USB and RS485 communication ensures ease of use and easy connectivity.

Dumo has been updated to utilize Sintrol’s newest and most sensitive measurement technology. New mechanical design makes the device even more robust and tolerant to difficult industrial environments.

EX models (IECEx and ATEX) available.
Wireless RF communication available.

Sintrol Dumo is a useful tool in all work environments where harmful dust concentrations are encountered:

  • Mines
  • Foundries
  • Wood
  • Cotton processing
  • Textile mills
  • Food
  • Chemical
  • Paper mills
  • Agricultural
  • Etc.


Measurement ObjectsSolid particles in ambient air
Particle Size0.3 µm or larger
Measurement RangeFrom 0.1 mg/m³
Measurement PrincipleInductive Electrification
Protection CategoryIP20  ı  IP54 for EX model
Power Supply24 VDC
Power Consumption5 W, (Dumo EX; 8 W)
Cable Connection5 meter cable, 12 wires  ı  16.4 ft cable, 12 wires
Output Signals– Isolated 4 – 20mA output
– 2 output signals, (100 – 280 mA) ** Depending on operation temperature
Communication Interface– Serial communication RS-485
– USB communication
– Wireless communication (optional)
Communication Protocol– Modbus RTU, (RS-485)
– SNT network, (USB, RF, RS-485)
Alarm Settings– Automatic, set at factory: Based on average measured dust flow
– User selectable ranges
Signal Damping Time– Default at factory: 100 s
– Adjustable from 0 – 6000 s

Ambient Conditions

Temperature– Starting -20 to +40°C  ı  -4 to 104 °F
– Running -20 to +60°C  ı  -4 to 140 °F
HumidityMax 95 % RH (non-condensing)

Materials and Weight

Probe MaterialStainless steel (AISI 316L)
BodyAluminum, stainless steel (AISI 316L)
Weight4 kg  ı  8.8 lbs