WFD smart electromagnetic flow meter with 4-20ma

carton

Specifications

product illustration

Prodcut introduction
WFD series smart eletromagnetic flowmeter could measure the volume flow rate of the conductive liquid and serosity, widely used in the industries of chemcial, invironment protecting, textile, metallury,mine, medicine,paper,plumbing,food,sugar,brew etc.

Working principle
The working principle of the eletromagnetic flowmeter is based on the Farady law of electromagnetic induction. The inside lining of the measuring tube of the flowmeter is the insulant which is non-magnetic conduction alloy tube. The two electrodes is installed vertically with axial flow direction. The electrode tip is paralleled with the inner tube surface. When the magnet exciting coil underways square-wave pulse by two-direction, it will produce one magnetic field with a intensity of magnetic flux as B. At this time when there is one fluid with a certain conductivity flow through the measuring tube, the incising magnetic line of force responsively produce electromotive force E When the conductive fluid pass the tube with the inner diameter D with the average velocity of flow: V(m/s), there is existing one field with the uniform intensity of magnetic flux as B. So it could sense the electromotive force E which is vertcial with the electromagnetic dirction and flow direction.

Production features
1. The product is fit for the liquid flow measurement which the conductivity of the liquid is over 5μs/cm. The change of conductivity does not efffect the performance.
2. The flowmeter could keep the high measuring accuracy for a very long term, and actually does not be effected by the phisical characteristic. The measuring accuracy could reach 1 class, 0.5 class.
3.The flowmeter has no machnical and movable elements, it is not need to maintain usually.
4. It is convinent to go into service, and the flow rate sets up automatically on the basis of the range: 0~10m/s.
5.Due to the parts touched with the measured medium, with the good corrosive resistance and wearing resistance, so the product could be widely used.
6.when measuring the medium containing oil or the electrode surface deposites and covers one layer of nonconductive matter, the changeable(cleaning) electrode may be selectec. 7. applying the advanced excitation arithmetic.

8. applying the most excellent integrated circuit to eliminate the interference when the excitation switches. For taking advange of the method of excitation circuit compensation to make the stability of the product to the high-point.
9.The design provide plentiful output interface for the very convinent use.
a)4-20mA current output

b) it could set the pulse output
c)RS485 interface.

The main technical parameter
The sensor diiameter:DN6~DN3000

connecting class: in keeping with GB /T9119-2000

The electrical conductivity of the fluid
The velocity of flow of the medium:     automatically setting
The electrode form: standrad interpolating
the electrode material: stainless steel 316L, hastelloy Hc, hastelloy Hb, Titanium, tantalum etc.

inside lining material: PTFE, Neoprene,polyurethane rubber could be selected.

The measuring temperature:-20 — 140°C

The protection class: standrad IP65, special IP68

The model number naming of the flowmeter:

A.the nominal diameter DN(mm)

B. the norminal pressure
06 0.6 (DN700~DN1000)
10 1.0 (DN700~DN1000)
16 1.6 (DN10~DN600)
40 4.0 (DN10~DN150)

C the lining material
1.P:TFE(F4) (DN10~DN1000)

2.Poly Chloroprene rubber(DN10~DN1000)

3.polyurethane(DN10~DN1000)

4. polypropylene(DN10~DN1000)

D the electrode material
1.stainless steel 0Crl18Ni12Mo2Ti

2.hastelloyB
3.hastelloyC
4)titanium
5)platinum alloy/iridium alloy

6)tantalum

7)stainless steel covered by the tungsten carbide

E. the sensor protection(one-piece and explosion proof IP65)

1 IP65
2 IP68

F. the explosion proof mark
0.None

1 MdllBT4(one-piece type)IP65,DN10~DN600)

1 MdllBT4(one-piece type) IP65,DN10~DN600)

2 MdllBT4(one-piece type IP65,DN10~DN6000)
3 MdllBT4(one-piece type IP65,the converter in the safe zone,DN10~DN600 )

Accessories:
0.None

1.earthing flange
2. importing protection flange

H. structure
1.separated type
2.one-piece type

The power supply source
1 85~265V 45~450HZ

The converter shape

1.Push-botton type