Tuesday 26th May, 2020

Bintech and SWR team up to release new sensor

SWR Engineering, in partnership with Bintech Systems, have launched a new microwave sensor specifically designed for continuous moisture measurement of solids during batching.

SWR Engineering, in partnership with Bintech Systems, have launched a new microwave sensor specifically designed for continuous moisture measurement of solids during batching.

Named the M-Sens 3, the sensor monitors product flow for its moisture content and temperature, which can be used to detect how efficient the product stream is. Dusts, powders, granulate and other bulk solids can be constantly analysed to identify process failures, such as a defective screw or material clogging.

It does so by monitoring the material’s surface and capillary moisture, which influences the specific conductive capacity of a material. This can then be compared to an averaged bulk density to determine if investigation is required.

In the result of a material process failure or caking around the sensor, an alarm can be sounded to ensure the validity of the measurements is high at all times.

The system is comprised of a welding flange, one to three sensors (each with a two-metre connection cable), and an evaluation unit in a wall-mounted housing of rail format. The sensor probe is connected to the evaluation unit by a shielded, four-wire cable. The maximum distance between two components can be up to 300 metres. Precise, high-frequency measurement methods are used to gather data, which is then digitised.

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The M-Sens 3 can provide accurate and reliable data for a number of different bulk solids handling operations. For example, installing the M-Sens 3 in a screw feeder can provide valuable insight on the process, as material passes by the sensor window in even intervals and with a relatively constant bulk density.

On a conveyor belt system, it can measure moisture of the solids and allow operators to react in real time if material is too humid or dry, helping prevent plugging of aggregates. Additionally, when mounted at a bin’s outlet, it can take advantage of the constant bulk density and almost unchanging measuring field for monitoring residual moisture. This helps operators stop material that is too damp from reaching the next production level.

The system itself has been designed for easy installation and calibration. All an operator needs to do to calibrate the sensor is press a button and enter the referenced moisture content. Measured fluctuations in bulk density and temperature are automatically compensated by an internal filter function.