Electromagnetic Flow Meter

Pramp Automation and Calibration

Description

Category: Flow

Product: Electromagnetic Flow Meter

Electromagnetic Flowmeters, Commonly known as Magmeters are a type of inferential flow metering devices used to measure the flow of electrically conductive liquid in closed pipe applications where the magnetic flux permeates the entire cross sectional area of the liquid flow. Magmeters measure electromotive force to determine liquid velocity using Faraday's Law of Electromagnetic Indication and compute the flowrate using the equation of conductivity.

Eureka make Eumag Flowmeters operate with electrically conductive liquids and are relatively immune to the effects of Pressure, Temperature, Density & Viscosity of the liquid medium. For Eumag Flowmeter the electrically conductive liquid is defined as a liquid with a Conductivity of at least 5 Micro Siemens/Cm.

Sensor:

The Sensor consist of a measurement Flow Tube section, non conductive Liner, Electrodes & Coils. The Flow tube Sensor, is made of material that is permeable to magnetic flux, such as SS 304, or SS316, or other nonmagnetic material. The inner surface of the Flow Tube is lined with nonconductive material to insulate it from the process liquid. This prevents the voltage generated by the velocity of the flowing media, from shorting out on the measurement section & allows the Electrodes to detect the voltage.

The Electrodes are made of SS316 or an alloy with high nickel content such as Hastelloy.

Convertor:

The voltage detected by the Electrodes is amplified and processed by an electronic Transmitter which outputs an electrical signal proportional to the fluid flow rate, and powers the coils generating the magnetic field. This microprocessor based Transmitter, commonly known as Convertor, can be equipped with a LCD for flow rate indication and the programming of all important parameters such as Output Signal, empty pipe etc. This convertor can be mounted on the sensor or remote.

Specifications For Series Eumag--0/1

Accuracy	+0.5%, +1%, +2% of flow rate
Technique	Pulsed DC
Liquid Conductivity	5 Micro Siemens or better
Line Size	4 NB to 1600 NB
Pressure Rating	Upto 40 bar
Temperature Rating	60⁰ C for Neoprene lining, 180⁰ C for PTFE lining
Lining Material	Neoprene, PTFE other on request
Electrode Material	SS 316, SS 316 L, HASTELLOY-C, Titanium other on request
Protection Category	P 65(Optional IP-67, IP-68)
Earthing Electrode	Built in (no need for earthing rings)
Velocity Ranges	Programmable 0+2.5 m/s, 0+5 m/s 0+10 m/s

Signal Convertor

Accuracy	+0.5% of Flow Rate or better in between 0.5 to 10m/sec. velocity
Supply Voltage	110/220 VAC, 50HZ optional - 24 VAC or 24 VDC
Programmability through MMI or Serial Port	Pipe Diameter, Flow Units, Pulse Output Units and Resolution, Low-flow Cut-off percentage, Bidirectional Flow.

Convertor with inputs display:

Apart from the above features, it has isolated RS 485 or RS 232 or HART capability. It also includes the Batching option, Logging option etc.

16x2 Backlit Display (ch. Size 3 mm)
6 Key Membrane Keyboard
Serial Interface with basic MF board
Serial Interface to field: RS 485 Galvanically Isolated for Modbus / Profibus Options
Batching capability
Operator Menu based Interface For Setting Up and Servicing.

Note: At any given time only one of the interfaces can be offered : RS 485 or Rs 232 or HART