FLOWTECH KF700H Series Manuale utente
ISO9001-2000
NINGBO KIO FLOW INSTRUMENTS CO.,LTD
KF700H Series
Electromagnetic Flowmeter
OPERATION INSTRUMENTS
CATALOGS OF SENSORS
1. Operation principle
2. Major feature and application
3. Structure
4. Appearance and install size
5. Flow Specifications
6. Installation
7.Installation position of sensor
8. Connecting cable
9. The preparation of pre-operational
10. Maintenance and common trouble shooting
11. Complete sets of products and Open Box
12. Quality Assurance
13. Transport and storage
14. Order Information
15. Associated instruments part number and type
16. The Corrosion resistance of Common electrode materials
17. Performance and application of Common lining materials
1
1
2
3
4
5
7
8
8
9
10
10
11
11
11
11
12
CATALOGS OF TRANSIMITTER
I.Installation
1.Working condition
2.Installation Notes
II.Power Line connectiong
1.Instrument Power supply
2.Power Line connectiong
3.Output signal
III.Instrument started
1.Working instrument showing
2.Interface show
3.Power supply fuse replacement
IV.Operations
1.Panel construction and ket definition
2.Menu construction
3.Select menu item meassurement mode
4.Operation guide for regular function of transmitter
1.)Zero Correction
2)Damping time
3)Instantaneous flow Resolution
4)Cumulative total flow resolution
5)Scale of Flow
6)Small flow termination%(low %)
7)Flow direction
8.) The flow of indication
9.) Frequency upper limit Hz
10.) Liter/pulse
11.) Cumulate Clear
12.) Empty Trim
13.) Full Trim and Tube region setup
14.) Unit of Flow
15.) Unit of Accumulation
16.) Direction of Total
Ⅴ.Technical Data
Ⅵ.Type selection
Ⅶ.Error message
Ⅷ.Common failures and how to deal with
1、Not Flow signal show on LCD display
2、Zero point Instability
3、Real flow data different with Instrument show
ⅧI. Transport, storage
13
13
14
14
15
17
17
18
18
19
20
21
21
22
23
24
25
26
27
29
30
31
33
34
35
37
38
38
39
39
40
41
42
43
44
01
Http: // www.flowmeter.cc
1. Operation Principle
<>The operation of a magnetic flowmeter or mag meter is based upon Faraday's Law, which
states that the voltage induced across any conductor as it moves at right angles through a
magnetic field is proportional to the velocity of that conductor.
Faraday's Formula:
E is proportional to V x B x D where:
E = The voltage generated in a conductor
V = The velocity of the conductor
B = The magnetic field strength
D = The length of the conductor
To apply this principle to flow measurement with a magnetic flowmeter, it is necessary first to state
that the fluid being measured must be electrically conductive for the Faraday principle to apply. As
applied to the design of magnetic flowmeters, Faraday's Law indicates that signal voltage (E) is
dependent on the average liquid velocity (V) the magnetic field strength (B) and the length of the
conductor (D) (which in this instance is the distance between the electrodes).In the case of
wafer-style magnetic flowmeters, a magnetic field is established throughout the entire
cross-section of the flow tube (Figure 1). If this magnetic field is considered as the measuring
element of the magnetic flowmeter, it can be seen that the measuring element is exposed to the
hydraulic conditions throughout the entire cross-section of the flowmeter. With insertion-style
flowmeters, the magnetic field radiates outward from the inserted probe (Figure 2).
2. Main Features andApplications
Electromagnetic flowmeter consists of two parts of the sensor and transmitter. KF700-type
electromagnetic flowmeter for measuring a variety of acid, alkali, salt solution, paper pulp, slurry
and other conductive liquid or liquid-solid two-phase medium volume flow. In the chemical, alloy,
water supply and drainage, sewage treatment, food, sugar, paper making, environmental protection
and other departments to be widely application.
Following characteristics of sensor:
(1) The whole welded structure,good sealing performance;
functional diagram
SENSORS PARTS
SENSORS
02
Http: // www.flowmeter.cc
3.Structure:
(2) Structure is simple and reliable,no moving parts inside;virtually no pressure loss
(3) low-frequency square wave excitation,anti-jamming performance,zero stability;
(4) The instrument measured medium has nothing to do with pressure, viscosity, temperature,
density and other physical parameters of the impact of changes
(5) The instrument reflects the sensitivity; the output signal has a linear relationship with flow. Width
of measurement;
(6) As measured medium only measuring tube lining and electrode contact, easy to satisfy
anti-corrosion, anti-wear requirements;
(7) Power consumption is small, complete set of instrument power consumption <10VA, has
nothing to do with the size of the sensor aperture;
(8) To install, usage, and easy maintenance.
Structure diagram
1.Junction box; 2.flange;
3.insulated liner; 4.electrode; 5.measuring tube;
6.excitation coil; 7.shell
Sensor structure shown in Figure 2, the following components:
(1) Measuring tube: Measuring tube flow measured medium, measuring tube by the non-magnetic
stainless steel and welded flange, lined with insulation lining.
(2) Lining: the inside of the measuring tube and the flange sealing surface of a complete corrosion
resistant electrical insulation material, to prevent the traffic signal is short-circuit.
(3) Excitation system: measurement of the outer tube from top to bottom with a group of coils to
generate magnetic fields of work.
(4) Electrode: with the magnetic field lines perpendicular to the direction of the measurement pipe
wall with a pair of electrodes to detect flow signals, the electrode materials can be corrosion
testing medium selected.
(5) Shell: protecting the instrument and steal up it.
SENSORS PARTS
SENSORS
4.Appearance and install size
03
SENSORS PARTS
Http: // www.flowmeter.cc
SENSORS
DN Common choice of full scale flow range（m3/h）
10
15
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1200
1400
0.16, 0.2, 0.25, 0.3, 0.4,0.5,0.6,0.8,1.0,1.2,1.6,2.0,2.5
0.4,0.5,0.6,0.8,1.0,1.2,1.6,2.0,2.5,3.0,4.0,5.0,6.0
0.6,0.8,1.0,1.2,1.6,2.0,2.5,3.0,4.0,5.0,6.0,8.0,10.0,12.0
1.0,1.2,1.6,2.0,2.5,3.0,4.0,5.0,6.0,8.0,10.0,12.0,14.0,16.0
1.6,2.0,2.5,3.0,4.0,5.0,6.0,8.0,10.0,12.16,20,25
2.5, 3.0, 4.0, 5.0, 6.0, 8.0,10.0,12,16,20,25,30,40
4.0, 5.0, 6.0, 8.0, 10, 12,16,20,25,30,40,50,60,70
6.0,8.0,10,12,16,20,25,30,40,50,60,80,100,120
10,12,16,20,25,30,40,50,60,80,100,120,160
16,20,25,30,40,50,60,80,100,120,160,200,250
25,30,40,50,60,80,100,120,160,200,250,300,400
40,50,60,80,100,120,160,200,250,300,400,500,600
60,80,100,120,160,200,250,300,400,500,600,800,1000
100,120,160,200,250,300,400,500,600,800,1000,1200,1600
160,200,250,300,400,500,600,800,1000,1200,1600,2000,2500
200,250,300,400,500,600,800,1000,1200,1600,2000,2500,3000
250,300,400,500,600,800,1000,1200,1600,2000,2500,3000,4000
300,400,500,600,800,1000,1200,1600,2000,2500,3000,4000,5000
400,500,600,800,1000,1200,1600,2000,2500,3000,4000,5000,6000
600,800,1000,1200,1600,2000,2500,3000,4000,5000,6000,10000
800,1000,1200,1600,2000,2500,3000,4000,5000,6000,10000,12000
1000,1200,1600,2000,2500,3000,4000,5000,6000,10000,12000,16000
1200,1600,2000,2500,3000,4000,5000,6000,8000,10000,12000,16000
1600,2000,2500,3000,4000,5000,6000,10000,12000,16000,20000
2500,3000,4000,5000,6000,8000,10000,12000,16000,20000,25000,30000
3000,4000,5000,6000,8000,10000,12000,16000,20000,25000,30000,40000
5. Specifications
1). Max flow range for EMF (Choice of reference map) :
04
SENSORS PARTS
Http: // www.flowmeter.cc
SENSORS
6. Installation
1.) Installation ways
3 .) The choice of installation location
2.) The choice of installation environment
2.) Flowmeter curve graph of the relationship between Diameter, flow rate and flow
Electromagnetic flow sensor if not installed properly, will significantly affect measurement
accuracy, even lead instrument not working properly, so Before installation instructions
carefully read the relevant sections.
Sensor installation method for the flange connection. Criteria and process pipe welding flange
screw holes in the inter-position, bolt can be passed smoothly to facilitate the integration
between the sensor and process piping.
Installation must ensure that sensors Center and the process pipe center line, and then a good
grounding line, otherwise it would cause measurement error.
According to the work of instrument characteristics and technical characteristics, the choice of
instrument installation environment should pay attention to:
(1) The instrument should be installed at the ventilation to dry, avoid installing at the place easy
accumulation water.
(2) The instrument should try to avoid just sun shine and rain. Open-air installation, should
keep out rain in places;
(3) Installation of places as much as possible to avoid strong vibration;
(4) as far as possible to avoid a strong electromagnetic field equipment; such as large motors,
large transformers.
(5) Select the ease of maintenance, activities, convenient place.
Installed on the sensor in the pipeline, we should note the following points
(1) sign the direction of the flow sensors and pipeline flows in the same direction within the
medium;
(2) The need to ensure that sensor tube is full filled with the measured medium;
(3) The sensors should be five times the upstream straight pipe section D above, the sensor
should be three times the downstream straight pipe section D above (available from the center
of sensor , D to measure the pipe diameter);
SENSORS PARTS
05
SENSORS PARTS
Http: // www.flowmeter.cc
SENSORS
图3
picture 4 Install reducing pipe or gradually expanding tub to effect pressure loss
(d/D)
4. ) When the pipe diameter is inconsistent with the sensor, the sensor is installed at both ends tapered
or gradually expanding tube, and then with the pipe connection. Gradually expanding, tapered conical
tube should be no more than 15 degrees. When using 15 cone angle gradually expanding, tapered tube,
the pressure loss resulting from the curve in Figure 4 :
d.Sensor internal diameter; D.diameter, V.flow rate of
sensor(m/s)
5) sensor installation should be taken in the horizontal electrode as horizontal position, once the media
containing bubbles or sediment, the bubbles will not be adsorbed on the electrode in the vicinity, resulting
in conversion of the input terminal open circuit; sediment will not cover the electrode, caused by zero drift;
(6) liquid-solid two-phase medium, the vertical installation of a more favorable, a measured medium can
prevent phase separation, two lining wear sensor allows more uniform. Vertical installation, the medium
flow direction should be bottom-up, so as to ensure that the sensor tube is always filled with medium.
PRESSURE LOSES (Pa)
06
SENSORS PARTS
Http: // www.flowmeter.cc
SENSORS
C/CE
7. Installation position of sensor
Pipe to the highest point (Gathered bubble
in tube to make error measurement)
Preferred position
(Sensor cannot be installed at highest level of pipeline)
Easily lead to non-full
pipes (wrong measurement way)
Pls put flow meter into low position,
exposure for Injection or discharge Pls install exhaust valve if
drop pipe longer than 5M.
5m
Exhaust valve
picture 5 recommend installation
In order to enable reliable flow meter, Pls note the following installation requirements：
1. As far as possible to avoid ferromagnetic objects and equipment with strong magnetic fields
(big electric machine, big transformer) is protecting of the magnetic field sensor.
2.Flow meter should be enough space around for easy installation and Maintenance.
In longer pipe system, pls install
control valve and Cut-off valve on
the flow meter Downstream side
Pump: Prohibited to install
flowmeter at suction
side(Vacuum)
07
SENSORS PARTS
Http: // www.flowmeter.cc
SENSORS
C/CE
C/CE
C/CE
C/CE
C/CE
C/CE
C/CE
Indice
Altri manuali FLOWTECH Strumento di misura
