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Promotes Material Flow
Rugged Construction
Easy Installation


Rectangular Air Pad


The Monitor air pad bin aerator is an aeration device used to promote the fluidization and flow of dry bulk powders / materials from a storage vessel (bin, silo, hopper).

.: Principle of Operation

.: Applications

.: Features

.: Accessories

.: Specifications

.: Warranty


Principle of Operation

The Air Pad aeration device operates by continuously introducing air into the body of the dry powder. When a powder is first conveyed into a storage vessel it is actually a highly aerated mixture of air and particulate. In this fluidized state the mixture flows quite readily. However, as the powder settles the solid particulate and air separate resulting in a decrease in volume and an increase in bulk density. In this deaerated state powders can behave more like a single large solid structure rather than a fluid-like mixture. By replacing the naturally lost air, the air to particulate mixture ratio is held thus maintaining the fluid like characteristic of the aerated powder.


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For best results in promoting the flow of dry bulk powders, multiple rows of air pad bin aerators should be used. The number of rows and quantity of air pads in each row will differ by application. Monitor application engineers are ready to provide you with the best recommendation for your specific material flow problem.

Generally, four rows of air pad bin aerators on 12 inch (305mm) or 15 inch (381 mm) centers is recommended. While the effective radius of each air pad is approximately 10 inches (254 mm), the air pads should be spaced so that the entire troublesome area is within the sphere of influence of the air pads.


Typical Applications include, but are not limited to:




Soda Ash



Carbon Black

Fly Ash




Effective radius of 10 inches (254 mm)
Adapts to almost any bin configuration
Low cost
Easy Installation
Minimal maintenance



An external mounting kit is available. This kit can completely eliminate the need to enter the bin to install or service air pad bin aerators. Using a 2-5/8 X 6-5/8 inch (66.5 x 162 mm) cutout hole in the bin wall, the mounting kit can be completely installed and serviced from outside the bin. Our air pad and external mounting kit can easily install in existing cutouts of other brands.

The external mounting kit includes gaskets, clamp bracket, rectangular mounting bracket and necessary hardware for mounting with your air pad bin aerator and its mounting hardware. An external mounting kit for high temperature applications is also available.




Air Supply:

Clean, dry air 3 to 5 psi

Air Consumption:

1 psi - 4.2 scfm (0.07 bar - 1.2 m3/min)
2 psi - 5.7 scfm (0.14 bar - 1.6 m3/min)
3 psi - 6.5 scfm (0.21 bar - 1.8 m3/min)
4 psi - 7.1 scfm (0.28 bar - 2.0 m3/min)
5 psi - 7.6 scfm (0.35 bar - 2.2 m3/min)



Zinc-plated steel or 304 stainless steel


Cotton (up to 180°F/82°C) Fiberglass (up to 650°F/343°C)

Diffuser Screen:

16 mesh zinc-plated steel or 304 SS

Air Inlet Nipple/Nut:

1/8" NPT nickel-plated brass

Spacer Washers:

Nickel-plated steel


Silicone (up to 650°F/343°C)



Neoprene (up to 180°F/82°C)

High Temp Gasket:

Up to 300°F/149°C


Zinc-plated steel



Monitor Technologies warrants each air pad it manufactures to be free from defects in material and workmanship under normal use and service within two (2) years from the date of purchase. The purchaser must notify Monitor of any defects within the warranty period, return the product intact, and prepay transportation charges. The obligation of Monitor Technologies LLC under this warranty is limited to repair or replacement at its factory. This warranty does not apply to any product which is repaired or altered outside of Monitor Technologies' factory, or which has been subject to misuse, negligence, accident, incorrect wiring by others, or improper installation.






Mass Flow Measurement Systems
The QuantiMass in-line mass flow sensor measures the flow of quantities in pneumatic conveying & free-falling processes. The sensor is based on the latest Microwave Doppler Effect technology and provides fast, in-line / on-line measuring without the use of weight scales.
The sturdy, non-intrusive design of the sensor minimizes maintenance. In addition, the compact size of the sensor makes for easy installation into existing processes. Suitable for powders, dust, pellets, and granular up to 0.75 inch (2cm).

Ultra Series-Includes controller
PRO Series-Includes transmitter

A practical application for the QuantiMass would be to monitor material flow rates to verify blending mixture ratios.

Principle of Operation:
The QuantiMass Mass Flow Measurement Sensor / Meter is designed with the latest microwave technology and is used to continuously quantify the flow of powders & solids being conveyed in metallic pipes. The QuantiMass is based on technology that has been developed and proven over several years. The measurement process of the sensor is centered on the Doppler effect. The mass flow-rate is determined by evaluating the frequency and amplitude changes during the measurement process. Particles at rest, such as deposits, do not influence the measurement. All powders, dust, pellets and granules can be measured reproducibly, up to the size of 0.75 inch (2cm). The QuantiMass sensor is suitable for continuous in-line / on-line measurements in pneumatic conveying or in free-fall pipelines.

Click here for more information on the QuantiMass
or contact Monitor Technologies LLC at
Tel.: 800-601-6319 in the USA and
Tel.: 630-365-9403 worldwide.
>>Download QuantiMass Ultra Bulletin

>>Download QuantiMass PRO Bulletin

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