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Febuary 2008: Aeration

 

Aeration

Aerators Solve Material Flow Problems In Bins and Silos

Monitor Technologies LLC offers a broad line of aerator devices that solve a variety of bin flow problems associated with difficult powders. Monitor's product line consists of the highly popular Rectangular Air Pad, Evasser and Flo-Pad products. These devices offer different shapes and pressure ratings and provide different methods of diffusing the air. With almost five decades of experience in bulk solids applications Monitor Technologies application engineers are highly qualified to recommend the most cost effective solution available.

The Air Pad, Evasser and Flo-pad products are alternatives to using high impact pneumatic or electric vibrators that can be loud and cause damage to the bin and surrounding equipment. In fact, bin vibrators can pack material instead of fluidizing it to address the problem. Typically used in applications where the material flow into the bin is via pneumatic conveying, the entrained air in the material is evacuated during the settling of the powder material. Bin vibrators actually facilitate this de-aerating and can create packing flow problems.

Using aerators, the source of the problem (de-aerated material) is addressed and a gentle and cost effective solution is ensured. In addition, many configurations of these bin aerators can be mounted from outside of the bin, thereby simplifying installation.

For more information refer to www.monitortech.com or contact us at 800-766-6486 / 630-365-9403.

 

 

 

 

 
Spotlight: RF Capacitance Level Sensor
TrueCap Level SensorsTrueCap Light  
TrueCap® MK-2
Advanced RF Capacitance Level Probe

The TrueCap® Model MK-2 RF Capacitance point level probe is designed to provide a superior and stable sensitivity threshold making it suitable for a variety of powder / bulk solids and some liquid or slurry applications.

Advanced features of the Model MK-2 include:
> Automatic immunity to material build-up on the probe by its driven shield design
> Push-button calibration
> Enhanced temperature compensation
> Maximized reliability via smart sensing algorithms like “self-validating” fail-safe protection
> Visible status LED on ordinary location units
> Versatility through a variety of configuration options including: hazardous location version, split architecture design, quick-connect process connection, stub probe, cable extensions, solid extensions, Nylon® probes, Ryton® - equiv. probes, etc.

A practical application for the TrueCap would be to use this level sensor where a residual material build-up on a different sensor would cause a false material level indication.

Principle of Operation for the TrueCap RF Capacitance Level Probe:
The vessel wall and the active probe element establish an impedance reference between each other when exposed to air which has a dielectric constant of 1. When materials with a dielectric constant greater than 1 are in close proximity to the probe, the impedance of the sensing field between the sensor and the vessel wall will change. Once the amount of change exceeds a threshold that was electronically determined during the calibration process, an output relay will either be energized or de-energized depending upon the position of the fail-safe selector on the probe’s electronic circuit board. A change of as little as .5 pico-farad is all that is necessary for the probe to sense the presence of material.

Click here for more information on the TrueCap MK-2 Level Sensor or contact Monitor Technologies LLC at
Tel.: 800-766-6486 in the USA and
Tel.: 630-365-9403 worldwide.

 

>>Download TrueCap Product Bulletin #413

>>Click here to learn more about other Point Level Switches from Monitor Technologies


 

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