The insert type electromagnetic flowmeter consists of a insert type electromagnetic flowmeter sensor and a insert type electromagnetic flowmeter converter (referred to as the flowmeter), which is used to measure the volumetric flow rate of various conductive liquids in pipelines.

Working principle of insert type electromagnetic flowmeter

The working principle of the insert type electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction. In an electromagnetic flowmeter, the conductive medium inside the measuring tube is equivalent to a conductive metal rod in Faraday’s test, and the two electromagnetic coils at the upper and lower ends generate a constant magnetic field. When a conductive medium flows through, an induced voltage is generated. The induced voltage generated by measuring the two electrodes inside the pipeline. The measuring pipeline achieves electromagnetic isolation from the fluid and measuring electrodes through non-conductive lining (rubber, Teflon, etc.).

The working principle of the insert type electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction. In an electromagnetic flowmeter, the conductive medium inside the measuring tube is equivalent to a conductive metal rod in Faraday’s test, and the two electromagnetic coils at the upper and lower ends generate a constant magnetic field. When a conductive medium flows through, an induced voltage is generated. The induced voltage generated by measuring the two electrodes inside the pipeline. The measuring pipeline achieves electromagnetic isolation from the fluid and measuring electrodes through non-conductive lining (rubber, Teflon, etc.).

The measurement accuracy is not affected by changes in liquid density, viscosity, temperature, pressure, and conductivity;
The external insertion installation method allows for the installation and maintenance of sensors without the need to disassemble the measuring tube, making it more suitable for on-site use where water cannot be stopped, and it can also be installed on old pipelines with openings on site;
The structure is simple, and the measuring tube of the electromagnetic flowmeter does not need to be lined, with good reliability;
Wide nominal diameter range, suitable for all diameters of pipelines between DN100-DN3000;
Integrated grounding electrode to achieve good grounding of instruments;
The sensor adopts new processing technology, solid-state packaging, vibration resistance, and impermeability, which enables the instrument to have good measurement accuracy and stability.

Technical parameters of insert type electromagnetic flowmeter

property	Technical parameter
Pipe diameter	100mm-3000mm
Velocity range	0.1m/s～10m/s
precision	0.5 ~ 10m/s:±1.5%FS; 0.1 ~ 0.5 m/s: plus or minus 2.0% FS ~ 10 m/s: 0.1 + / – 2.5% FS (FS) refers to 40% ~ 100% full scale flow
Electric conductivity	> 20µs/cm
Medium temperature	-20℃～/+130℃
Ambient temperature	-20℃～/+60℃
Withstand voltage	1.6MPa
Class of protection	IP65 (Integrated) IP68 (separate)
Electrode material	316L Stainless steel
Output signal	4-20mA; RS485; HART protocol; MODBUS protocol
Sensor material	Stainless steel
Working power supply	220VAC, tolerance 15% or 24VDC, ripple ≤5%
power	6.5W
Pressure rating	≤1.6MPa

Product Description

1. Measurement is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity;
2. There are no obstructing flow components or pressure loss inside the measuring tube, and the requirements for straight pipe sections are relatively low;
3. Series nominal diameter DN15~DN3000. There are multiple options for sensor lining and electrode materials;
4. The converter adopts a new excitation method, which has low power consumption, stable zero point, and high accuracy. Flow range degree 1500:1;
5. The converter can be integrated or separated from the sensor;
6. The converter adopts a 16 bit high-performance microprocessor, 2×16 LCD display, convenient parameter setting, and reliable programming;
7. The flowmeter is a bidirectional measurement system equipped with three integrators: forward total, reverse total, and differential total; Can be displayed Positive and negative flow rates, with multiple outputs: current, pulse, digital communication HART;
8. The converter adopts surface mount technology (SMT) and has self checking and self diagnostic functions

The plug-in electromagnetic flowmeter is composed of a plug-in electromagnetic flow sensor (referred to as the sensor) and an electromagnetic flow converter (referred to as the converter). It is an instrument used to measure the volumetric flow rate of various conductive liquids inside pipelines.
Insertion type electromagnetic flowmeter is used to measure the flow rate of conductive fluids in sectors such as tap water, steel, petroleum, chemical, power, industry, and water conservancy. It can also measure corrosive conductive liquids such as acids, alkalis, and salts.

Features of insert type electromagnetic flowmeter:

1. Corrosion resistant all stainless steel material, ABS full mold production probe
2. Simple structure, sturdy, no moving parts, long service life, reliable measurement, strong anti-interference ability
3. Small size, light weight, easy installation, and low maintenance
4. Large measurement range, unaffected by changes in temperature, density, pressure, viscosity, conductivity, etc., with zero pressure loss
5. It can be installed and disassembled without interruption, which brings convenience to users’ maintenance. Compared with the manufacturing and installation costs of general electromagnetic flow meters, it is particularly suitable for flow measurement of large and medium-sized pipelines
6. Adopting advanced processing technology, solid-state packaging, vibration resistance and other characteristics, the instrument has good measurement accuracy and stability
7. The flowmeter not only has a 4-20mA current signal output, but also a 1-2000HZ frequency output digital communication output: RS485、RS232、HART、Modbus。

Selection of insert type electromagnetic flowmeter:

When choosing an insertion type electromagnetic flowmeter, it is necessary to consider the properties of the fluid, including viscosity, density, temperature, pressure, etc.
When choosing an electromagnetic flowmeter, it is necessary to consider the flow range, that is, the large and small flow rates of the electromagnetic flowmeter. Generally speaking, the larger the flow range of an electromagnetic flowmeter, the higher its price. Therefore, when choosing an electromagnetic flowmeter, the appropriate flow range should be selected according to actual needs.
When choosing an electromagnetic flowmeter, accuracy requirements also need to be considered. Generally speaking, the higher the accuracy of an electromagnetic flowmeter, the higher its price. Therefore, when choosing an electromagnetic flowmeter, the appropriate accuracy should be selected according to actual needs.

In short, the selection of electromagnetic flow meters is a complex task that requires consideration of various factors such as fluid properties, flow range, and accuracy requirements. When choosing an electromagnetic flowmeter, it is necessary to consider the above factors comprehensively according to actual needs and select a suitable electromagnetic flowmeter.