DFMC In-line density and concentration meter | DF-6420

Product catalog summary

Product Overview
The DF-6420 Ultrasonic Concentration Meter is designed to measure pulp concentration inline without using nuclear methods, thus avoiding radiation pollution. It uses patented technology to mitigate the effects of bubbles and variations in pulp flow velocity, offering easy installation, calibration, and automatic temperature compensation.

Operating Principle
The meter operates on the principle that ultrasonic amplitude changes with the solid content and particle sizes in pulp. The attenuation of ultrasonic waves is measured to determine pulp concentration. The attenuation is influenced by absorption for small particles and scattering for larger particles. The attenuation rate is calculated using specific equations.

Technical Parameters

Sensor Dimension: Φ25mm×h30mm
Material: 316 stainless steel, epoxy resin liners
Protection: P65 (transducer), IP68 (pipeline sensor)
Temperature Range: Controller: -20~60℃, Sensor: -50~100℃
Pressure: Max. 20 bar
Accuracy: 2%(1σ)
Resolution: 0.5% full scale
Measuring Range: 0%~70%
Outputs: 4~20mA analog, relay outputs for alarms, RS-485 communication
Power Supply: 220Vac, below 200VA

Product Characteristics

First inline ultrasonic concentration meter in China, overcoming challenges in industrial applications.
Eliminates the effect of air bubbles without large mechanical structures, reducing costs and maintenance.
Minimizes the impact of particle size variation through frequency selection, enhancing accuracy and adaptability.
Utilizes a digital frequency synthesizer for generating waveforms, improving measurement capabilities.
Features a wide dynamic measurement range, using logarithmic amplifiers and automatic gain control to handle signal variations.
Employs advanced software algorithms for data processing, using curve fitting methods for accurate concentration measurement.

Product Application
The DF-6420 is available in spool and submersible types. The spool type is suitable for installation on various process piping, while the submersible type is used for measuring concentration in sedimentation basins, large-diameter pipes, and containers.

Catalog excerpts

DFMC In-line density and concentration meter | DF-6420-1

Ultrasonic Concentration Meter Dandong Dongfang Measurement & Control Technology Co.,Ltd.

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DFMC In-line density and concentration meter | DF-6420-2

Operating Principle The operation of DF- 6420 ultrasonic (pulp) concentration meter is based on the principle that, ultrasonic amplitude varies with solid content and particle sizes in pulp when ultrasonic waves pass through homogeneous suspensoid such as pulps. The pulp concentration is measured by measuring ultrasonic attenuation caused by pulps. When the size of particles in pulps is small and certain conditions are satisfied, the attenuation by absorption plays the leading role. When the particle sizes are relatively large, attenuation by scattering will play the leading role. It is known...

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DFMC In-line density and concentration meter | DF-6420-3

Technical Parameters Product Characteristics 1. First ultrasonic concentration meter for inline pulp concentration measurement in China Physical Property Sensor Dimension: Φ25mm×h30mm Sensor material: 316 stainless steel, epoxy resin liners cancelled the effect of air bubbles, particle sizes, temperature and other factors. Our ultrasonic Degree of protection: P65 (transducer) concentration meter is able to measure change in pulp concentration accurately. 2. Cancel the effect of air bubbles in suspending liquids on measurement result Most of ultrasonic attenuation- based instruments cancel the...

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DFMC In-line density and concentration meter | DF-6420-4

of less than 12.5MHz rapidly. Pulse trains are generated by high- speed circuits, amplified by power amplifiers and then used to drive the ultrasonic transducer. Product Application At present, DF-5420 ultrasonic (pulp) concentration meter is mainly composed of two types, spool 5. Wide range of dynamic measurement The front-end voltage of echo wave receiver modules of the ultrasonic concentration meter may type and submerged type. be µV class to V class. The font- end voltage has wide dynamic range, which will result in many problems with application design. During practical application, signals...

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DFMC In-line density and concentration meter | DF-6420-5

Dandong Dongfang Measurement & Control Technology Co.,Ltd. Address: No. 136, Binjiang M. Road, Yanjiang Development Zone, Dandong, Liaoning, China E-mail: [email protected] Website: www.dfmc.ee

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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