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EIP ENVIRO - Non Contact Solid Flow Measurement Devices
EIP ENVIRO provides advanced non-contact solid flow measurement devices, featuring both Doppler Solid Flow Switches and Microwave Solid Flow Meters. The Doppler Solid Flow Switch operates by emitting a low-power microwave signal at materials, detecting changes in frequency caused by movement, known as the Doppler effect, to indicate flow or no-flow conditions. Meanwhile, the Microwave Solid Flow Meter utilizes a similar principle, creating a microwave field through the pipeline that reflects off moving particles to calculate solid mass flow rates with precision. These devices are adaptable for measuring solids, granules, powders, and more in industrial settings such as feed, grain, cement, and power plants. They can be integrated into gravity chutes, feeders, pipelines, and bucket elevators, and are designed to function in explosive environments. Power requirements are typically 6 Watts at 24 VDC, with various sensitivity and detection range adjustments available.
Doppler Non Contact Solid Flow Switch
The Doppler Flow Switch emits a low power microwave signal toward the material being monitored. Part of this signal is reflected off the material back to the antenna of the Doppler Flow Switch. This reflected signal combines with the emitted signal to produce a beat
frequency, which is the difference in frequency between the two signals. If the material being monitored is not moving, the reflected signal will be the same frequency as the emitted signal and there will be no beat frequency produced. However, if the material is moving, the reflected signal will be shifted in frequency and a difference or beat frequency will be produced. This shift in frequency is called the Doppler effect. The presence or absence of this beat frequency is sensed by the Doppler Flow Switch to detect a flow or no flow condition.
Microwave Non Contact Solid Flow Meter
The measurement principle of the Microwave Solid Flow Meter is based on the physical Doppler-Effect, whereas the sensor generates a uniform field in the microwave frequency range inside the pipeline. These microwaves are being reflected by particles passing through the pipe. Calculation of frequency and amplitude changes allows an accurate determination of the solid’s mass flow rate. Nonmoving particles like dust accumulation are excluded from calculations.
- Flow / No Flow detection and Continuous Flow Measurement to prevent cross contamination of ingredients
- Used for solids, granules, pellets, meals, and powdered materials
- Installed in distributors, gravity chutes, feeders, pipelines, conveyor belts, or bucket elevators
- Suitable for most industries, including feed, grain, milling, food, cement, mining, power, and plastics
- In hazardous locations where there is the threat of combustible dust
- Power Requirements: 6 Watt at 24 VDC +/-10%
- Detection Range: Refer Catalogue
- Sensitivity Adjustment: High / low selection switch with potentiometer for Flow Switch and through software for Flow Meter
- Note – Refer Catalogue under download section for detailed specifcations