Electromagnetic Flowmeter
Electromagnetic flowmeters can be easily used in all liquids with conductivity over 20 uS. They provide a healthy and long-lasting measurement opportunity by changing the sensor selection in liquids with corrosive properties according to different substances.
The inner surface can be preferred as rubber or PTFE. The device, which allows density adjustment, flow unit adjustment, and temperature adjustment, can be used safely in different liquids with any density.
The device menu is user-friendly and has 4 different encryption and security settings. Flow rate, conductivity and total working hours can be monitored on a single screen.
General characteristics of electromagnetic flowmeters
* Fast response time and high stability
* High sensitivity up to 0.2%
*Double housing cavity to separate the electronics partition
* AC power or 24VDC supply option
* RS485; RS232; HART; Profibus; MODBUS etc. communication options
* 2-way measurement (forward (positive) measurement and reverse (negative) measurement) and NET total feature
* Analog, Frequency and Pulse output features
* Lower limit and upper limit alarm output features
ADVANTAGES OF ELECTROMAGNETIC FLOWMETERS OVER OTHER FLOWMETERS
· There are no mechanical parts that prevent the flow and reduce the pressure.
· Measurement scale; It is 10 times more than other flow meters.
· All measurements and adjustments can be made/displayed via the integrated or wall-mounted LCD screen.
· It can be composed according to the process and fluid with the user interface ( Density setting can be entered )
· The menu can be protected with a password.
· Instant and total flow can be observed on the LCD screen at the same time.
. With the report feature, old data can be examined (daily, weekly, monthly, yearly)
. Total flow can only be reset with a password.
· Flow rates between 0.3 and 15 m/s can be measured and the speed can be monitored on the LCD screen.
· Calibration (full-filled and stable fluid-filled pipe) can be done with the menu.
· Measurement accuracy can be achieved as 0.2%
· Conductivity measurement can be made and displayed on the LCD screen.
· It can take measurements in all homogeneous conductive liquids above 5 uS.
· Provides resistance to environmental electronic noises through its grounding electrode.
· Thanks to its flange connection, it provides reliable, easy and long-lasting mounting feature.
· Protected against external factors thanks to its metal body.
WHAT DO WE PROVIDE WITH DOMESTIC PRODUCTION OF ELECTROMAGNETIC FLOWMETER?
· Measurement stability has been significantly increased.
· Even with low conductivity and high density, the measurement response speed has been greatly increased.
· Electrode material safety has been increased to the highest level.
· Supply times have been minimized with the DN15-DN2200 production facility.
· LCD display resolution has been increased.
· The product electronics has been revised and made better, more stable and more robust.
· Technical support capacity has been increased and failure support and resolution times have been shortened.
· With our new calibration facility, TÜRKAK accredited services have been provided on a wide scale from DN15 to DN2200.
HOW THE ELECTROMAGNETIC FLOWMETER WORKS:?
Electromagnetic Flow measurement; It is a flow measurement method based on the electromagnetic field principle.
The physical foundations of this Principle are based on British Physicist Michael FARADAY, who discovered in 1831 that electric current can be produced with the help of a magnetic field. In 1941, Swiss Inventor Bonaventura Thurlemann applied this knowledge to conductive liquids passing through pipes and produced the world's first electromagnetic flowmeter.
There are 2 coils inside each electromagnetic flowmeter. With the help of metal parts placed on these coils, it creates a continuous magnetic field across the cross-sectional area of the measuring tube.
The 2 electrodes that sense the voltage are placed inside the measuring tube perpendicular to each other. The insulating material coated on the inner surface prevents the formation of short circuits between the conductive liquid and the metal measuring tube.
In the absence of flow, no electrical tension occurs between the 2 electrodes. Negatively and positively charged ions in the conductive liquid are in equal amounts in the liquid.
With the initiation of flow, the magnetic field exerts a force on the charged ion particles in the liquid.
As a result, the negatively and positively charged ions in the liquid separate from each other and head to opposite sides of the measuring tube. This results in an electrical voltage sensed by the electrodes.
This voltage is directly proportional to the flow rate in the line.
Instant flow can be calculated with the known volume and velocity information of the measuring tube. As the flow rate increases, the separation of the charged particles will increase and the voltage between the electrodes will also increase.
The measuring electrodes can also detect magnetic noise in the environment from time to time, this noise signal must be strictly distinguished from the actual measuring signal.
To achieve this, the magnetic field must be created with pulsed direct current. By constantly changing the places of charged ions between the electrodes with a direct pulsed current, the effect of magnetic noise is eliminated and precise and stable flow measurement is made.
In the simplest way, the Electromagnetic Measurement principle and the Flow rate information are calculated with the following simplified formula.