Differential pressure cone type flowmeter
Accurate flow measurement · Experts in the field of flow measurement · Two-wire wiring
Can replace the following products: Orifice plate, Venturi, nozzle, vortex flowmeter, rotameter, rotary flowmeter, Anuba flowmeter
Scope of application
Gas medium measurement
Coal gas (coke oven gas, blast furnace gas, producer gas, city pipeline gas), natural gas (including natural gas with a moisture content of less than 5%), air, oxygen, nitrogen, hydrogen, CO2, chlorine, methane, propylene, smoke Gas, saturated steam, superheated steam, wet gas, etc.
Water, oils (including crude oil, gasoline, diesel, kerosene, residual oil, etc.), emulsions, pure water, hydrogen peroxide, glycerin, alcohols, purified water, sewage, benzene and other liquids.
Oil and gas products and transportation
Urban water and wastewater
Chemical/medical process process
Energy/Combined heat and power generation
Food and beverages
Features of the meter
Low pressure loss
Low instrument noise ratio
Flow field reforming function
Minimum requirements for front and rear straight pipes
High precision + 0.5% FS
High repeatability ±0.2%
Wide range ratio, generally 1:10 (can be higher)
Difficult application occasions Dirty liquid, humid gas, slurry, low pressure gas, etc.
Accuracy: ±0.5% F.S. (water calibration accuracy) ±1.0% F.S. (calculation accuracy)
Turndown ratio: 1:3 to 10 or better
Standard ß value: 0.45～0.85, special ß value available
Pressure loss: varies with ß value and differential pressure
Pipeline installation requirements: 1 to 3 times the diameter of the measuring body before the measuring body; 2 to 3 times the diameter of the measuring body behind the measuring body
Material: carbon steel, 304, 316L stainless steel or special materials according to user requirements
Wide turndown ratio
Due to the unique design of the differential pressure cone flowmeter, its range is relatively large, generally 1:3 to 1:50, and can be increased if necessary. When the Reynolds number is higher than 8000, its output signal is linear, if it is lower than At 8000, the output signal needs to be corrected.
Low requirements for straight pipe sections
Because its cone can uniform fluid distribution curve, compared with other types of flow meters, the requirements for the upstream and downstream straight pipe sections are smaller. For one section, the upstream 1D and downstream 2D straight pipe sections can fully meet the requirements. When applied to large pipelines or occasions with limited installation locations, it has an irreplaceable feature.
Good long-term stability
The unique design of the cone ensures that when the fluid flows through the cone, it is a gradual process without sudden change. The flow first passes through the cone and then reaches the edge of the cone. Therefore, the cone will not be constantly worn by the fluid. , Ss value can remain unchanged for a long time, so the meter does not need to be recalibrated after long-term use.
Good signal stability
All flow meters that use the principle of differential pressure to measure will have "signal fluctuations". This is because even if the fluid before entering the measuring instrument is very stable, it will produce signal fluctuations after passing the measuring element once, which will interfere with the reading of the measuring instrument.
With "self-cleaning function"
The unique design of the differential pressure cone flowmeter makes the cone free of dead zones and will not accumulate fluid fragments, slag or contaminants on the cone, so it has the "self-cleaning" ability.