Scale-Tron, automation, sensors and weighing systems

AquaSense applications and examples


AquaSense is suitable for many different applications for moisture measurement in granular products.  Although Aquasense is new, it's predecessor, AquaSense, has been successfully used in sand and crushed stone in concrete and asphalt plants, coal, ironstone and similar minerals, foundry sand, clay, lime and bentonite, powdered and crystalline chemicals, food and animal food products such as powdered starch, corn in grain dryers, dog and cattle food, and many other products.  call us to find out if your product has been tested.  If it hasn't, you can send us a pail for a full test. 

Talk to us about arrangements for a demo or trial in your plant.


Other applications: AquaSense moisture probe can be installed in vertical bins, horizontal bins, chutes and conveyor belts for on-line moisture measurement. On conveyor belts the sensor can be installed as shown here. The sensor glides on the surface of the material, compacting it and allowing maximum depth for best accuracy.  Shoe plate is chromium carbide cladded for extra hard wear.  Optional lifting cylinder pulls sensor out of material when not used, to reduce wear further.

 

"Star" type concrete plants - a difficult application but by no means impossible:  install AquaSense in the bin wall as close to the gate as possible. Where mounting space is insufficient for the standard mounting flange, use a 4" pipe welded to the wall at an angle, with a standard ANSI flange welded to the end as the mating connection for AquaSense's mounting flange.  Ensure that you angle it upward at 45 degrees and insert it far enough to clear the edge of the skip when it raises.  

The illustration at right shows a good example of this type of installation to measure moisture content of aggregates in a Liebherr plant at Emirates Precast in Dubai;  ideally the sensor should be angled steeper upwards than shown.

AquaSense microwave moisture sensor. Use RS485 for multi-drop connectionAquaSense microwave moisture sensor. Use analog connection for PLCs

Several AquaSenses can be easily connected to a computer or PLC. The standard analog output can be fed into the analog input of most batching controllers and PLCs.  The serial RS485 connection allows several sensors to be connected by a single cable. This connection is industry-standard and compatible with almost all batching controllers, PLCs and computers.  Alternatively, the AquaSense sensor handles Modbus commands for use in Scada systems.

Non-concrete applications: AquaSense is in use in many industries, concrete being the most common. Any granular material can be measured with the exception of metallic particles. Conductive materials such as carbon can be measured, as can most grains. As a rule of thumb, the smaller granule sizes will give better accuracy, 0.25" (6mm) and less giving more accuracy than the larger sizes. The moisture range depends on the bulk density of the material; in sand with bulk density of 100 to 150 lb/cu.ft, a moisture range of 0.5 to 15% can be measured accurately, the high end being limited only by saturation of the material. Lighter materials require a proportionately greater moisture range.

Before installing the AquaSense in a non-sand application, we usually test the material to ensure success. We need a sample of approximately 1 cu.ft. Call us to discuss your application.

Plastic pellets with moisture ranging from 0.01 to 0.1% cannot be measured with the AquaSense; its sensitivity is insufficient for this and similar applications. Call us if you are unsure, however.

Other applications: AquaSense can be installed in vertical bins, horizontal bins, chutes and conveyor belts. On conveyor belts the sensor can be installed as shown here. The sensor glides on the surface of the material, compacting it and allowing maximum depth for best accuracy.  Shoe plate is chromium carbide cladded for extra hard wear.  Optional lifting cylinder pulls sensor out of material when not used, to reduce wear further.