Electromagnetic flowmeter dimension

Size of electromagnetic flowmeter size of electromagnetic flowmeter, electromagnetic flowmeter structure by which several parts constitute indicate: electromagnetic flowmeter and other dashboards, the sensor and signal processor two parts.This type of construction can be installed separately or as a whole.During the process of separation and installation, the sensor converts the total flow information content into inductive electrodynamic force and sends it to the signal analysis module by cable. After the process of enlargement, plastic and A/D transformation, the analog signal is generated to facilitate the display of information, storage or output to other electronic computers.Overall installation, can be designed into an intelligent system, the same role.

The key components of electromagnetic induction sensors are measuring tube components, excitation regulator system software, electrical level and anti-interference regulation system software.In order to achieve the operational reliability and credibility of the steam flowmeter, the electromagnetic induction sensor should also show sufficient large induction electromotive force e proportional to the total flow, and electromagnetic interference should be reduced to a minimum, considering the frequency stability requirements.

Electromagnetic flowmeter dimension

1. Measure pipe parts

In order to ensure that the magnetic inductance line smoothly passes through the measuring tube and enters the measured conductivity fluid mechanics, the measuring tube must choose the non-magnetic inductance raw material for production and processing. This is because the magnetic inductance raw material will lead to the change of the magnetic inductance line, and the position of magnetic induction intensity B will be changed in the measured current dynamics.Second, in order to reduce electromagnetic induced vortexes, high impedance materials are generally used in measuring tubes.In addition, in order to avoid the induction electromotive force on the electrical level by the metal material wall thickness short circuit fault, the measuring tube must be lined with a high toughness insulation layer, lining raw materials should be selected corrosion resistance, heat resistance, wear resistance raw materials made.Electromagnetic flowmeters, like other gauges, have two parts: a sensor and a signal processor.This type of construction can be installed separately or as a whole.

During the process of separation and installation, the sensor converts the total flow information content into inductive electrodynamic force and sends it to the signal analysis module by cable. After the process of enlargement, plastic and A/D transformation, the analog signal is generated to facilitate the display of information, storage or output to other electronic computers.Overall installation, can be designed into an intelligent system, the same role.

In order to ensure that the magnetic inductance line smoothly passes through the measuring tube and enters the measured conductivity fluid mechanics, the measuring tube must choose the non-magnetic inductance raw material for production and processing. This is because the magnetic inductance raw material will lead to the change of the magnetic inductance line, and the position of magnetic induction intensity B will be changed in the measured current dynamics.Second, in order to reduce electromagnetic induced vortexes, high impedance materials are generally used in measuring tubes.In addition, in order to avoid the induction electromotive force on the electrical level by the metal material wall thickness short circuit fault, the measuring tube must be lined with a high toughness insulation layer, lining raw materials should be selected corrosion resistance, heat resistance, wear resistance raw materials made.Common lining raw materials are shown in table 8-1.

2. Excitation regulator system software

The excitation regulator system software is composed of excitation regulator electromagnetic coil, high permeability iron core and magnetic choke.There are several types of structures according to the measured pipe diameter.

1) transformer construction

This type of structure is very large based on the magnetic flux of the measuring tube and the induced electromotive force between the two electrical stages is also large and the measurement pixel is high.If the measured pipe diameter is large, the magnetic flux leakage and magnetic flux are increased, and the electromagnetic interference is also increased, thus reducing the reliability of the sensor

The construction is only suitable for caliber measuring tubes.

2) centralized winding structure

This structure is generally used as the electromagnetic induction sensor for measuring pipe diameter 10-1oomm. The excitation regulator winding is made into two frameless saddle type electromagnetic coils, which are placed on the left and right sides of the measuring tube. In order to avoid the transmission of magnetic inductance line, a layer of high permeability sand steel plate with thickness of o. 5mm is modified in the field to form a gaussian shielding ring.

3) spread winding structure

This kind of structure is generally used to measure the electromagnetic induction sensor with tube diameter exceeding about lOOmm. The winding of the excitation regulator is wound in layers to make a saddle type, with different levels of intimacy and dispersion. The high density winding is placed near the electric level, and the rare winding is placed in other positions, so as to maintain the uniformity of electromagnetic field.A magnetic yoke is added to the surface of the winding. Since the measuring tube is equipped with an excitation regulator electromagnetic coil, there is no need to modify the magnetic boots.In addition, because the spread winding type can reduce the volume of the instrument panel, so the large size of electromagnetic flowmeter generally choose this kind of structure.As shown in figure 8 to 7.

3. Electric-grade components

In general, the electrical level is in contact with the measured conductivity fluid mechanics. When the magnetic inductance line is cut by the laser of fluid mechanics, in a unique situation, in order to prevent environmental pollution of the electrical level, the capacitive sensor electromagnetic flowmeter can be selected. The electrical level is hidden inside the lining, not in contact with the measured conductivity fluid mechanics.The electrical level of such a steam flowmeter and the lining, conductivity hydrodynamics, produce a capacitor that, when hydrodynamics is used as an electrolyte for fluidity, results in alternating changes in the capacitance between the two electrodes, which may result in a change in the induced electromotive force (E).

Shanghai porcelain xi instrument & meter co., ltd. was established in 2011, which is the beginning of porcelain xi's r&d and production of high-quality, high-precision flowmeters. We have introduced the Siemens CNC machining center system, cutting accuracy is higher than 0.001mm, the products have obtained the national multiple invention certification, the production strictly implements the ISO9001 certification.At the same time, we also provide customized instrument manufacturing solutions, with a strong r & d capabilities 3 to 4 weeks to high quality delivery.