As you know, the main prerequisite for doing any work is to have proper information about that subject. Regarding selection, checking prices, buying and know more about flow transmitters, the contents are included below so that you, dear visitors of the specialized website of Damatajhiz, can use these tips to choose and buy infrared, pneumatic and smart flow transmitters from Endress Hauser, Rosemount, Siemens, Medco, etc. brands in bulk.
Types of flow transmitters and definition of their functions
Flow transmitters (flow transmitters or flow transmitters) are tools for measuring the flow of gases and liquids that provide electrical outputs corresponding to flow inputs. In addition to measuring fluid flow, flow transmitters are also used to control and monitor the flow. Flow transmitters have types of mass flow transmitters, volume flow transmitters, micro infrared transmitters, pneumatic flow transmitters, flow transmitters with screens, and speed flow transmitters. Also, flow transmitters have various technologies such as pressure difference flow transmitters, positive displacement, and different measurement techniques such as ultrasonic, actual mass flow, electromagnetic, and knee. Join us in introducing and checking the performance of different flow transmitters in the rest of this article (for wholesale purchase).
Types of flow transmitters in terms of technology and measurement techniques
Differential pressure flow transmitter (DP In the pressure difference flow transmitter, the measuring criterion is the pressure drop in the pipe proportional to the square of the flow rate.
Orifice method or orifice plates: In the orifice method, the orifice plates are placed in the fluid flow path and measure and control the flow rate by creating a pressure difference.
Cone-based devices method: In the method of cone-based device, a cone is placed on the fluid path to create a differential pressure proportional to the speed.
Pitot Tubes Method: In the pitot tube method, there is a pair of hollow tubes, one of which measures the contact pressure and the other the potential.
Venturi Tubes method: In the venturi tube method, the diameter of the tube through which the fluid passes is gradually narrowed, creating a pressure drop and measuring the flow.
Nozzles flow method: In the flow nozzle method, the flow measurement method is similar to the venturi tube method, except that they do not provide an outlet area for pressure recovery.
Positive Displacement Fluotransmitter (PD
Positive displacement flow transmitters measure liquids electrically and mechanically using PD devices. 4 methods of measuring positive displacement flow transmitters are:
Piston method Piston meters
Oval gear meters method
Nutating discs method
Rotameter method
Types of flow transmitters in terms of measurement techniques
Genuine Mass Flow Flow Transmitter: True mass flow meters measure flow in terms of mass.
Ultrasonic flow transmitters: These flow transmitters include time-of-flight and Doppler effect counters
Electromagnetic flow transmitter: In this method, a liquid is used as a conductor, and an energized coil outside the current tube creates a magnetic field.
Elbow meter method: The fluid moves in a circular path and the centrifugal force is applied from the center along the outer edges.
Flow transmitters have differences such as fluid temperature range, mass flow rate, flow velocity rate, and volume flow rate with each other, which should be considered when purchasing.
Types of flow transmitters in terms of output
Analog voltages
Analog currents
Frequencies
Pulses
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