Description of DN150 Electromagnetic Flow Meter

Description :

　　The measurement principle of this product is Faraday's law of electromagnetic induction. The main components of the sensor are: measuring tube, electrode, excitation coil, iron core, and magnetic yoke housing.

　　1、 Characteristics:

　　The sensor adopts an integral welded structure with good sealing performance;

　　The structure is simple and reliable, with no moving parts inside and almost no pressure loss;

　　The measurement accuracy is not affected by changes in physical parameters such as pressure, temperature, density, viscosity, etc. of the measured medium; Accuracy is not sensitive to changes in velocity distribution (except for vortices);

　　Equipped with conductivity measurement function, it can distinguish whether the sensor is empty or not; Adopting a 16 bit embedded microprocessor, it has fast computing speed and high accuracy; There are two integrators inside, which display forward and reverse accumulation and difference accumulation respectively; Capable of outputting RS485 or RS232C digital communication signals.

　　2、 Main technical data:

　　Power supply: 85V-250VAC/16V-36VDC;

　　Instrument display: High definition backlit LCD display (126 x 48 dot matrix), which can simultaneously display instantaneous, cumulative flow and other information and related units, with Chinese/English menu support;

　　Communication interface: It has digital communication signal outputs such as RS485, RS232, Hart, and Modbus;

　　Anti interference: Built in comprehensive anti-interference multi-level protection circuit with full digital processing, significant anti-interference performance, effectively eliminating on-site vibration and power frequency interference;

　　Data storage: With comprehensive data backup and recovery functions, on-site maintenance free;

　　Excitation method: Three types of excitation frequencies are standard, 1/10, 1/16, and 1/25 power frequency (1/4, 1/8, and 1/32 are optional), to meet more measurement needs;

　　Operation method: It has two functions: key operation and magnetic key operation. The operation is simple and fast, easy to learn and understand. Infrared handheld keyboard for remote non-contact operation.

　　3、 Installation position and flow direction:

　　The axis of the measuring electrode must be approximately horizontal;

　　The measuring pipeline must be completely filled with liquid;

　　There should be a minimum of 5xD (D is the inner diameter of the flowmeter) of straight pipe section in front of the flowmeter, and a minimum of 3xD (D is the inner diameter of the flowmeter) behind it

　　A straight pipe section of diameter; For the convenience of installation and disassembly, a pipeline expansion joint can be installed after the flowmeter.

　　The flow direction of the fluid and the arrow direction of the flowmeter;

　　Vacuum inside the pipeline can damage the lining of the flowmeter, so special attention should be paid;

　　There should be no strong electromagnetic field near the flowmeter; There should be ample space near the flowmeter for installation and maintenance;

　　If there is vibration in the measuring pipeline, there should be fixed supports on both sides of the flowmeter.

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• Description of DN150 Electromagnetic Flow Meter