hunanrongda.company of Germany, the professional manufacturer of flowmeter ET company based on the principle of uniform speed PITOT tube design and manufacture of the measurement of fluid (gas, steam, liquid, etc.) of a flowmeter. Compared with the traditional orifice flowmeter, it has the following advantages: low installation cost, short straight pipe section, low permanent pressure loss, and bidirectional flow measurement.

1.1 measurement principle

This sample introduced a new generation of ETBAR (easy tebah) is used for medium flow measurement meter, round tube and square tube. The products include ETBAR (easy tebah) as a measurement probe, throttling device, built-in integrated differential pressure transmitter, pressure transmitter and temperature transmitter, the real-time measurement of parameters to the microprocessor for integrating, generating mass flow, differential pressure is the principle of uniform velocity flowmeter flowmeter based on a standard.

Flow measurement. When the fluid flows through the probe, a high voltage distribution area at the front pressure distribution of hydrostatic pressure slightly higher than the pipeline, according to the Bernoulli equation, the principle of fluid flow through the probe speed, creates a low pressure distribution in the rear end of the probe, low voltage distribution of pressure is slightly lower than the static pressure pipe. The differential pressure fluid flows from the probe to the sides of the probe and produces a partial vacuum at the rear of the probe. The average pressure of the high pressure zone is transmitted to the positive pressure chamber of the differential pressure instrument through the probe high pressure guide pipe, and the low pressure area of the low pressure area is transmitted to the negative pressure chamber of the differential pressure instrument through the low pressure pipe of the probe. Differential pressure instruments measured the average pressure and the average pressure difference, the root operation after reflecting the average velocity of fluid flow velocity and the average size is proportional to, then we can calculate the pipe fluid volume or mass flow.

Flow calculation formula:

Q = K × C × √ DP

Where: Q: fluid volume flow

K: flow coefficient C: flow constant DP: differential pressure value

1.2 features

ETBAR (easy tebah) flowmeter to accurately measure various gases, round tube and square tube in non explosive and non corrosive gas, liquid and water is a high price products. The product is the use of today's high-tech patented technology, microelectronic sensor technology, differential pressure / pressure / temperature measurements were integrated into the microprocessor chip. The product has many excellent characteristics, such as strong zero point stability and excellent dynamic characteristics, wide range and height.

1.3 advantage

The product is the true sense of the mass flowmeter, the signal can be pressure and temperature real-time compensation. Compared with other products, the product will not be due to the surface area of the dust or hanging material and other things to produce a larger output drift. With zero drift compensation algorithm, can be maintenance free. It can be used in ultra wide flow range, ultra high temperature and pressure.

Simple structure, light weight

ETBAR (Yi tebah) are composed of a velocity flowmeter hollow metal tube and pipe fittings, consisting of a few, except with form of cut-off valve structure is more complex, the general structure is relatively simple, only a total of more than and 10 parts.

Easy installation and disassembly, low cost

ETBAR (easy tebah) are velocity flowmeter installation and disassembly are convenient. Compared with orifice plate flowmeter used, installation of an orifice plate flowmeter in pipe diameter is 500mm, is estimated to take 2 hours, and the installation of a ETBAR in the same diameter (easy tebah) average rate meter, estimated only 1 hours.

Pressure loss is small, energy saving

ETBAR (easy tebah) uniform velocity flowmeter can not recover the pressure loss is 2% ~ 5% signal pressure loss, only common orifice flowmeter can not recover the pressure loss of 1/10 / 0 ~ orifice for years running costs 1/50. Can not recover the pressure loss is a kind of power consumption, long-term operation, especially in large diameter measurement, using ETBAR (Yiteba) were more significant effect of energy saving speed meter.

A wide range of applications, wide measurement range

Can be applied to a variety of fluid (gas, liquid, steam), diameter from 8 m m to 7000 m m, pressure up to 30MPa, the temperature limit of up to 550 degrees C or higher.

High accuracy and good long-term stability

No moving parts, the accuracy is not affected by fouling and corrosion, can guarantee the length of straight pipe in lower accuracy and repeatability of + 0.5%, even in the straight section is not up to the requirements of the case can be guaranteed 0.2% + 0, especially suitable for industrial process control

The requirement of straight pipe section is low

ETBAR (easy tebah) are velocity flowmeter because there are multiple detection holes are pressure, thereby reducing the requirement for straight pipe. Orifice plate flowmeter before and after the pipe length requirement is 10 times the diameter of more than ETBAR (easy tebah) uniform velocity flowmeter in straight pipe

The length of the section is relatively low, generally about 4 to 7 times the diameter. Fluid coefficient (K) constant, so that the measuring signal is stable, small fluctuations in ETBAR (easy tebah) were used to design the warhead velocity flowmeter fluid separation point is fixed, another part of the probe before the surface roughness, and increase the silt prevention groove to form a stable turbulent boundary layer probe surface, to ensure that the fluid coefficient (K) constant, small signal stability, fluctuation measurement.

Online installation and maintenance

ETBAR (easy tebah) uniform velocity flowmeter can realize the pipeline operation under the condition of online installation and maintenance, solves the application can not be discontinued or dangerous situations.

1.4 application

The German ETBAR flowmeter is suitable for a variety of media measurement: full pipe, one-way flow, single-phase gas,

A liquid with a low viscosity and steam, as:

One or two wind power plant, blast furnace gas measurement measurement, compressed air measurement, gas, nitrogen and oxygen ethane, ethylene, measurement of natural gas measurement, saturated steam, high pressure steam measurement, tap water, circulating water measurement