Dusty Broken Bag Detection

SKU: Dusty

Cost effective broken bag detection

A simple solution to identify failure of a fabric filter baghouse, cartridge filters or cyclones.
Ideally suited to applications from 0.1 mg/m3, it provides an immediate alarm in case of a filter break.

 

  • Brand
  • FEATURES & BENEFITS
  • MAIN APPLICATIONS
  • TECHNICAL SPECIFICATIONS
  • TECHNICAL DATA
  • MOUNTING & INSTALLATION

Brand

Envea PCME

FEATURES & BENEFITS

  • Detects all dust types
  • Relay alarm output
  • Usable in clean gas and any metallic dust channels
  • Very simple and fast retrofitting
  • Immediate detection of filter damages
  • Simple commissioning (Plug & Play)
  • Excellent price / performance ratio
  • Easily expandable to 4 … 20 mA output (trend signal) with optional DRC

MAIN APPLICATIONS

  • Aluminium
  • Cement
  • Chemistry
  • Electronics
  • Extraction
  • Fertilizer
  • Food
  • Glass
  • Granite
  • Mills
  • Products of carbon
  • Quartz sand
  • Wood
  • Metal
  • Building materials
  • Power plant
  • Surface purification
  • Automotive

TECHNICAL SPECIFICATIONS

  • Can be used in metal channels
  • Operational range: starts at dust volumes of 0.1 mg/m3

TECHNICAL DATA

SENSOR TECHNICAL DATA
Measurement objects Solid particles in a gas flow
Measurement range From 0.1 mg/m3
Process temperature Max. 140 °C
(higher temperature on request)
Ambient temperature – 20 . . . + 60 °C
Pressure Max. 2 bar
Gas velocity Min. 4 m/s
Humidity 95 % RH (non-condensing)
Principle Electrodynamic technology
Damping time 1 s
Output signals 1 Alarm output, potential-free,
NO/NC
Sensor rod Total length: 260 mm,
length of stainless steel rod: approx. 194 mm
Enclosure Aluminium
Using in Ex-zones Cat. 3 G/D (zone 2 gas / zone 22 dust)
Protection category IP65
Power supply 24 ± 10 % V DC
Power consumption 1 W
Electrical connection • screw-type / terminal box
• M12 connector (optional)
Assembly Via ½“ thread or Tri-Clamp connection
Weight Approx. 0.7 kg

MOUNTING & INSTALLATION

Determination of the installation location:
The best installation height for the sensor in a channel or a pipeline is located in an area in which the particles are subject to an even distribution and with constant speed. In an ideal case, the channel or pipeline will run horizontally or vertically, and installations such as curves, flaps or sliders should have a minimum distance of 5 times the pipeline diameter in every flow direction to the sensor rod .  The Dusty has to be installed in a metal channel to achieve sufficient shielding against electric influences from the outside and good earthing. For non-metallic lines, a sheath made of metal, or in the form of a metal foil or a fine-mesh metal net with a length of approx. 5 times the pipe diameter around the measurement area of the line must be installed.

  1. The Dusty is to be installed in a position where the gas flow hits the sensor rod at an angle of 90°.
  2. In pipelines with a round profile, the Dusty can be installed in any position above the horizontal axis (betw. 9 and 3 o’clock).
  3. The installation in pipelines with a square profile, the pipelines can be installed on the top or in the side, in the middle respectively.
  4. Even if the sensor is not impaired in its function through vibration, strong vibrations should be avoided.
  5. The electronics should not be exposed to any direct sunlight or used in areas with an ambient temperature of more than 55 °C.
  6. The sensor rod may not come into contact with the opposite pipeline wall or any other installation! For this, the length of the sensor can be reduced to a minimum length of 100 mm.

Installation of the sensor:
First the  G 1/2’’ internal thread bushing is welded onto the pipeline at the selected installation location. Then the Dusty is firmly screwed in using the external thread until there is a leak-proof connection to the process. Screwing in too tightly, due to possible damage to the sensor or electronics, as well as an opening of socket screw in the external thread for the turning of the head due to possible tearing off the cable from the circuit board are to be avoided.

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