Electromagnetic flowmeter in the application of the hot potash solution flow measurement

Qinghai Salt Lake group chemical company is Qinghai Salt Lake Industry Co. , Ltd. , a subsidiary of the company is mainly producing synthetic ammonia, urea, PVC, potash, methanol, ammonia plant of zui decarburization process is complicated. Because the process of interlocking more request instrument measuring accuracy is higher, the hot potash solution conductivity is higher, so choose ZUI electromagnetic flowmeter is suitable, it is primarily through liquid to accurately measure the conductivity of the hot potash solution ( Barren solution and a barren solution) Of circulation, and make it according to certain ratio in the full absorption process gas CO2 gas, to ensure the process after the syngas purification degree, don't make the methanation furnace temperature exceeds bid and parking. Hope that through practice more detailed introduction is made of electromagnetic flowmeter. 1. Electromagnetic flowmeter is introduced electromagnetic flowmeter is doppler flowmeter, apply to a conductive liquid volume flow measurement. Flow sensor measurement of channel lining coated with anticorrosive coating, the measurement channel of throttling without any fixed or movable parts, the fluid pressure loss, its output characteristic and the flow status of fluid density, viscosity, has nothing to do, can be used for measuring the corrosive or contains solid badge grain flow and the slurry material. However, it cannot measure the gas, steam and the electrical conductivity of liquid. 2. The working principle of electromagnetic flowmeter lines of magnetic force direction, the conductor by the magnetic field induction induced electric potential (E The working principle of the generator) 。 Sensor measuring magnetic field in the channel is the channel wall is measured by the installed in the excitation coil in the exciting current under the action of alternating magnetic field. Detecting element for two rods electrode, respectively installed on the sensor hole on both sides of the rod, and the rods between each have one end on the inner wall of the sensor channel, and channel flow to maintain good electrical contact. When conducting fluid by the sensor channel, conductive fluid flow direction perpendicular to the direction of magnetic field lines, fluid flow when cutting lines of magnetic force, induced potential E in conductive fluid, induced potential and the relation between the flow velocity: E = KBVD type: E = KBD type: E a induction electric potential, V. A coefficient K; B a alternating rectangular wave of magnetic induction intensity, the inner diameter of the TD a sensor channels, M; In channel and the average flow velocity of fluid, m/s by type, the relationship between induction electric potential is proportional to the average flow velocity of fluid, so the electromagnetic flowmeter is a doppler flowmeter. Induced by fluid potential consists of two electrodes in contact with the liquid detection, and transmitted to the converter, completed by converter signal amplification, translates into standard output signal to monitor and total unit. The properties of the electromagnetic flowmeter and the physical properties of measured medium has nothing to do with pressure, temperature, electromagnetic flowmeter after calibration in front of the factory, in the measurement of electrical conductivity medium flow, volume flow rate measured by the value need not be revised. Output signal converter output based on frequency, converter's standard is: whether the calibre of the sensor and the measuring range, its output is standard frequency, which is 1 m/s the velocity is converted to 1000 pulses/s, when the liquid flow rate of 2. 304 m/s, the output frequency of 2. 304kHz( 1) 。 3. The project of electromagnetic flowmeter institutions and using method of electromagnetic flowmeter is flow sensor and converter is introduced in this paper, Also called display) Composed of two parts. Sounding pipe up and down with excitation coil, excitation current to produce magnetic field through the measuring tube, a pair of electrodes in measuring tube wall in contact with the liquid phase, which leads to the induction electric potential, to the converter. Exciting current is provided by the converter. 3. 1 find switch Settings before changing institutions switch setting must cut off the power supply. In the case of using internal power supply ( Power supply circuit by the transducer itself) , press the display is black the low-end of the switch. For external power supply ( Circuit power supply) the outside of the transmitter , then press the display is white the low-end of the switch. 3. 2 write protect switch are connected to the transmitter cover plate in connection with a printed circuit board used as write protect the DIP switch is used to prevent accidentally change the transducer configuration or to reset the accumulator. This feature is usually only used in conveying operation by monitoring, or used in due to any reason to want to make sure that the system configuration and cumulative values are not changed situations. As a result, these switches are usually placed in & other; Do not use & throughout; The location ( And before delivery to set the default value) 。 If the transfer switch to & other; Use & throughout; Position, and can protect the above. 3. 3 with digital output circuit connected to the transmitter digital output signal can be connected to lead A series of system. The output signal is loaded in the 4 - 20 ma ( Loop) Online. This program involves only connection between the transmitter and the system. Field wiring ZUI large length of 600 meters ( A 2000 - foot) 。 The signal output power is provided by the FBM input module. Pipe down to avoid water accumulation in the junction box. Any unused duct openings should be stuffy plug. HART communication device or loading in the PC configuration of the device can be connected at the scene of the transmitter terminal to any position between the external load, or connect to other matches for the I/O orifice. 4. Electromagnetic flowmeter installation requirements ( 1) Sensor using conditions through measurement channels must be liquid is filled with status, sensor installation location should be optimized in vertical pipe runs, and must be liquid in the pipe flow from bottom to top, vertical sensor cannot be installed on the process piping zui high level section, section zui high gas gathering, process piping installation, in horizontal and inclined sensor straight pipe upstream side is less than 5 d, downstream straight pipe not less than 2 d. Stay away from strong magnetic field sensor installation location, near the installation position should be no power equipment or magnetic starter, etc.

mass flow meter is an inevitable and critical part of being a manufacturer, and it's more complicated than just manufacturing products and serving customers.

For decades, Beijing Sincerity Automatic Equipment Co., Ltd has searched for and found a number of secrets to help customers through out the world to achieve vortex flow meter manufacturer by providing useful and efficient solutions. Go to Sincerity Flow Meter to learn about some of those secrets.

The risk of tuning fork liquid density meter is reduced by electromagnetic flow meter slurry with the consumption of .

Many of the mass flow meter listed here can be purchased for less money, but in general we recommend paying a slightly higher price for significantly improved performance. These are our top choices and their recommended configurations.

To stay in contact for latest review of mass flow meter endress hauser ultrasonic flow meter across the globe and find out quality products, just go to Sincerity Flow Meter.