The use of a moisture probe in the fine aggregate bins is not only essential, but also critical for all concrete producers. In fact, it will prevent a tremendous amount of problems, increase the quality of your concrete and save you money in the long run.
The HydroProbe II is the first microwave sensor to use digital measuring techniques, and provides greater accuracy and range of measurement than any other sensor on the market while working with a wider range of materials than ever before. It is designed to continuously measure the flow of material during batching. Taking readings at 25 times per second, the sensor detects rapid changes in moisture, providing a linear digital or analogue output. It also continuously provides the 'average' reading of moisture from the start of reading to any selected time – normally the closing of the hopper door. Averaging, bin empty alarms and signal processing are performed by an internal sensor.
Another unique feature is the 'angling' of the sensor face plate in relation to the flow of the material, which ensures consistent compaction and flow characteristics over the sensor face, irrespective or whether the bin is full or almost empty. The normal angle for sand is 30 degrees, but may be easily adjusted to suit the flow characteristics of any material.
At BMH Systems, we have been using the Microwave moisture probe measuring system for many years. We recommend Hydronix because we believe that they have the best microwave probes on the market.
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Microwave Probes and Hydronix