Product specification
Microwave sensor for determining the mass flow
Description
The sensors DR-24, DR-42 or DR-120 form together with the evaluation unit FLOCON 21 a flow measurement system for many industrial applications in the transport of dry solids / bulk materials (sand, powder, dust) inside pipes (by means of pneumatic transport or in applications with free falling material).
The measured variables are speed and mass flow, both can be output at 0 / 4-20mA current outputs.
Depending on the application, the system can also measure the density or the total mass transported. In addition, the system can be programmed in such a way that, after receiving a start signal, it measures the total mass transported and signals that a preset mass value has been reached at the digital output.
FLOCON 21
Controller for flow measurement
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WAVETERM
PC software and service tool for DR-xxx
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Measuring principle
The pneumatic transport of fine-grained bulk materials in pipelines is widely used in all industrial areas, but their mass determination has been a problem so far.
The value to be determined is the weight in a unit of time or the reaching of a predetermined mass, as well an indication in mass / time unit or mass and alarm is required.
The physical principle of speed determination is well known: the Doppler effect.
Everyone knows this: If a vehicle is noisy, e.g. with horn coming towards us, the pitch changes at the time the vehicle passes us.
What is happening? The sound waves are compressed or pulled apart at speed.
Everyone is also aware that the police use radar equipment to determine the speed of our cars.
The functionality of the DR-xxx sensors is based on the use of the Doppler effect by means of microwaves.
