What is solid flow meter?
The solid flow meter is suitable for the measurement of solid mass flow in a wide range of metal enclosed pipelines from kg/h to t/h. The system is suitable for on-line monitoring of the flow of solids such as powder, dust, pellets, granules, etc., which are pneumatically conveyed or in free fall (1nm-20mm). Solid flow meters are also called solid powder flow meters, intelligent electrostatic powder flow meters, solid dust flow meters, coal powder flow meters, mineral powder flow meters, lime flow meters, cement flow meters, flour flow meters, petroleum coke powder flow meters .
How do you measure the flow of solids?
The Solid Flow Meter is based on the theory of contact electrification of solid materials. The powder material will accumulate a certain degree of electric charge during the process of pneumatic conveying or free fall.
Solid Flow Meter uses today’s advanced ring sensor. It can effectively capture every charged powder particle signal that passes through the ring sensor. It is amplified, shaped and filtered by an amplifier circuit, and then processed by a high-speed processor. The final output is linear with the powder flow The standard current signal of the relationship.
The GTL/C powder flow meter is suitable for the measurement of solid mass flow in metal enclosed pipelines with a wide range from kg/h to t/h. The system is suitable for on-line monitoring of the flow of solids such as powder and dust conveyed by pneumatic conveying. It can be widely used in electric power, metallurgy, cement, pharmaceutical, chemical, food manufacturing and other industries.
Solid flow meter working principle
The Solid Flow Meter is based on the theory of contact electrification of solid materials.
The powder will accumulate a certain degree of electric charge during the pneumatic conveying process. This phenomenon is caused by the continuous collision, friction, and separation process between the powder particles and the particles, and between the particles and the tube wall.
The sensor part of the Solid Flow Meter is composed of a short stainless steel tube, a ring electrode and an insulating layer. The two ends of the short tube are connected to the pipeline through a flange. The grounded metal tube wall plays an electromagnetic shielding role.
When the charged particles pass through the measuring pipe section, based on electrostatic induction, the sensor senses the charge number of the charged particles. The front-end circuit is connected to the sensor and the signal is amplified. Then it is calculated and processed by a converter with a high-speed central processing unit core. The flow rate is calculated and processed. The signal is converted into a standard current signal linearly related to the powder flow rate. It is used for flow control and adjustment.
Solid flow meter features
- Suitable for the conveying process of pneumatic conveying device;
- Intelligent design, can measure almost all solid materials;
- Integrated design, sensor, transmitter and display are integrated;
- No throttling parts, no pressure loss during measurement;
- Non-contact measurement, not affected by temperature, pressure, and vibration. To
Solid flow meter advantages
- Advanced toroidal charge sensor has the advantages of fast response, high sensitivity and accurate measurement;
- The measurement speed is very fast and the static repeatability is good;
- Static particles such as sediments have no effect on the work of the product;
- The stainless steel shell is firm and durable, and the PTFE lining is resistant to high temperature and pressure;
- Easy installation and maintenance-free.
Solid flow meter application
- Power plant boiler coal injection, pulverized coal quality, concentration, flow measurement;
- Activated carbon flow detection of waste incineration power generation in power plants;
- Limestone powder flow measurement during pneumatic conveying;
- Sodium phosphate flow monitoring;
- Blast furnace coal injection flow detection.
Chemical, chemical fiber, glass manufacturing plants, food, papermaking, mining and metallurgy, environmental protection, steel, power stations, petroleum, cement manufacturing and other industrial fields.
It is used to measure the volumetric flow of various small particles such as coal powder, mineral powder, lime, cement, flour, petroleum coke powder. etc.
Read More about: Chemical Flow Meter Guide
Solid flow meter parameters
|Pipeline gas pressure||-0.1Mpa～2 Mpa|
|Pipeline gas flow rate||1m/s～30 m/s|
|Pipeline gas temperature||-50℃～260℃ (450℃ high temperature customized)|
|Outer diameter of pipe||10mm～600mm|
(Standard 5, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, etc., special specifications can be customized)
|Accuracy class||±5% of full scale|
|Measuring range||0-20/100/500/2000Kg/h (10kg measuring range customized)|
|Dust size||0.1uM～200 uM|
|Sensor structure||Unobstructed pipeline|
|Operating environment electromagnetic field||High value at 50 Hz = 60A/m|
|Operating environment humidity||No condensation 90%|
|temperature||PTFE lining: -20+120℃|
High temperature type PTFE lining -20-+260℃C
|Operating environment vibration||High continuous oscillation, any direction, any frequency: root mean square value 2g (20m/s2)|
|Operational environmental protection||Protection grade: IP66/NEMA4 aluminum alloy shell|
|Transmitter power supply||24V (available in the range of 15V～32V)|
|Transmitter output||4～20mA isolated output|
|Response time||1 second|
|Power consumption||Big 3W|
|Zero drift||Less than 1%|
|Full scale drift||Less than 1%|
Extended reading: Radar level sensor for solids – Dust solid level measurement
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Sino-Inst offers over 50 flow meter for flow measurement. About 50% of these are differential pressure flow meters, 40% is the liquid flow sensor, and 20% are Ultrasonic Level Transmitter and mass flow meter.
A wide variety of flow meters options are available to you, such as free samples, paid samples.
Sino-Instrument is a globally recognized supplier and manufacturer of flow measurement instrumentation, located in China.