HHDR electromagnetic heat meter

Intelligent electromagnetic heat meter

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Performance characteristics of intelligent electromagnetic heat meter
Committed to provide solution for field instruments

Electromagnetic flow meter is based on Faraday’s law of eletromagnetic induction. The measuring pipe is a non-magnetic-conductive alloy short pipe with a inside-liner of insulated materials. Along the pipeline the two electrodes perforate the pipe and are fixed on the measuring pipe. The head of the electrodes is basically paralleled with inner surface of the liner. When the coils of the excitation impulse the excitation from square-wave of two sides, a working magnetic field with magnetic flux density B generates in the direction vertical with the measuring pipeline. At this time if the flux with specific electro-conductivity flows through the measuring pipe, the line of magnetic force will induct electromotive force E. Electromotive force E is in positive proportion to magnetic flux B, the product of the inside diameter d of measuring pipe and average flow velocity v, electromotive force E( signal of the flow) is examined by electrodes and sent through cable to converter. After the converter magnifies the signal of flow, the flow rate of fluid is displayed, and the pulse and analog current and other signal are output,which are used to control and regulate the flow rate.

 

Product • performance index

Various parameters for you to choose|HUAHAI instruments strive for excellence
Committed to provide solution for field instruments

Name HHDR- Intelligent Electromagnetic heat meter
Nominal diameter DN10-DN400
Structure form Integral type;remote type
Maximum flow velocity 15m/s
Fluid conductivity ≥5uS/cm
Accuracy class class 0.5、class 1.0 (With the caliber distinction )
Liner Material PTFE(F4)、Neoprene、polyurethane、FEP (F46)
Rated pressure 4.0Mpa、1.6Mpa、1.0Mpa
Maximum fluid temperature Integral type 70℃
remote type PTFE lining 100℃;150℃(Require special order)
Neoprene lining 80℃;l20℃(Require special order)
Polyurethane lining 80℃
FEP (F46) 100℃;150℃(Require special order)
Signal electrode and grounding electrode material 316L、Hastelloy B、Hastelloy C
Sensor material Carbon steel、304 stainless steel
Enclosure protection IP65、IP68(Require special order)
Output signal pulse、frequency
Cable interface G1/2 internal thread
Communication RS485 communication (Modbus protocol)、HART
LCD display Instantaneous flow、instantaneous heat、accumulative flow、 accumulative heat、Flow velocity、inlet water temperature、 outlet water temperature、temperature difference
Power supply 220V AC 50HZ、24V DC
Excitation mode Bidirectional constant current square wave excitation
 
Measuring Range Caliber (mm) Measuring Range (m3 /h) Caliber (mm) Measuring Range (m3 /h)
DN10 0.14 ~ 1.40 DN125 22.08~ 441.56
DN15 0.32 ~ 6.36 DN150 31.79~ 635.85
DN20 0.57~ 11.30 DN200 56.52 ~ 1130.4
DN25 0.88~ 17.66 DN250 88.31 ~ 1766.25
DN32 1.45~ 28.94 DN300 127.17~ 2543.40
DN40 2.26~ 45.22 DN350 173.09~ 3461.85
DN50 3.35~ 70.65 DN400 226.08~ 4521.60
DN65 5.97~ 119.40    
DN80 9.04~ 180.86    
DN100 14.13 ~ 282.60    
 
Nominal diameter DN Pressure class Flange outer diameter D Diameter of bolt hole center circle K Bolt hole n-L Total length L Height H Reference weight kg
10 PN40 90 60 4-φ14 200 190 10
15 PN40 95 65 4-φ14 200 190 10
20 PN40 105 75 4-φ14 200 190 10
25 PN40 110 85 4-φ14 200 200 10
32 PN40 140 100 4-φ18 200 205 11
40 PN40 150 110 4-φ18 200 215 12
50 PN40 165 125 4-φ18 200 220 15
65 PN16 185 145 4-φ18 200 240 16
80 PN16 200 160 8-φ18 200 255 18
100 PN16 220 180 8-φ18 250 270 20
125 PN16 250 210 8-φ18 250 300 25
150 PN16 285 240 8-φ22 300 330 30
200 PN16 340 295 12-φ24 350 390 45
250 PN16 405 355 12-φ26 450 450 65
300 PN16 460 410 12-φ28 500 500 79
350 PN16 520 470 16-φ30 550 520 95
400 PN16 580 525 16-φ32 600 635 140
Code Caliber (mm) Flow range (m3 /h) Code Caliber (mm) Flow range (m3 /h)
HHDR-10
HHDR-15
HHDR-20
HHDR-25
HHDR-32
HHDR-40
HHDR-50
HHDR-65
HHDR-80
DN10
DN15
DN20
DN25
DN32
DN40
DN50
DN65
DN80
0.14 ~ 1.40
0.32 ~ 6.36
0.57~ 11.30
0.88~ 17.66
1.45~ 28.94
2.26~ 45.22
3.35~ 70.65
5.97~ 119.40
9.04~ 180.86
HHDR-100
HHDR-125
HHDR-150
HHDR-200
HHDR-250
HHDR-300
HHDR-350
HHDR-400
DN100
DN125
DN150
DN200
DN250
DN300
DN350
DN400
14.13~282.60
22.08~ 441.56
31.79~ 635.85
56.52~ 1130.4
88.31~ 1766.25
127.17~ 2543.40
173.09~ 3461.85
226.08~ 4521.60
  Code Pressure class Code Pressure class Code Pressure class
P0
P1
P2
0.25MPa
0.6 MPa
1.0 MPa
P3
P4
P5
1.6 MPa
2.5 MPa
4.0 MPa
P6
P7
P8
6.3 MPa
10 MPa
16 MPa
  Code Sensor material
B1
B2
B3
carbon steel
304 Stainless steel
316 Stainless steel
  Code Material of liner Code Material of liner
C1
C2
C3
PTFE(F4)
FEP(F46)
Fs
C4
C6
Neoprene
PFA
  Code Electrode material
K1
K2
K3
316L
Hastelloy B
Hastelloy C
    Code Accuracy class
E2
E3
class 0.5
class 1.0
  Code Temperature
T1
T2
Normal Temperature
High temperature
  Code Structure form
J1
J2
Integral type
Remote type
Code Installation form
L1 Flange installation
Code Power supply mode
D1
D2
220V AC;50Hz
24V DC
Code Signal output
F1
F2
F3
4-20mA; Frequency;pulse
RS485(Modbus protocol)
HART
Code Protection class
U1
U2
U3
IP65 no explosion-proof
IP65 explosion-proof
IP68 no explosion-proof
Focmag3106-25 P0 B1 C1 K1   E2 T1 J1L1D1F1U1
Fault name Solutions
Converter no display 1. Check whether the power supply is connected
2. Check whether the fuse is in good condition
3.Check whether the supply voltage meets the requirements
4. If the above three items are normal, please return the converter to the factory for maintenance
Excitation alarm 1. Excitation coil insulation decreased
Empty pipe alarm 1.Whether the measured fluid is full pipe
2.Whether the flowmeter is properly installed as required
3.The conductivity of the measured fluid is too low
4.The empty pipe threshold is setting too low
Flow display when there is no flow 1.The empty pipe threshold is setting too high
2.The empty pipe alarm permission is not opened
3.Electrode contamination leads to zero point offset (pipeline full pipe at this time)
4.Signal line insulation decreased (pipeline full pipe at this time)
Flow measurement is inaccurate or fluctuates greatly 1.Whether the fluid is full pipe
2.Whether the flowmeter is grounded as specified
3.Signal line insulation decreased
4.Whether the flowmeter is properly installed as required
Flow Upper limit alarm 1.The site flow rate is greater than the upper limit threshold of the flow , modify the upper limit threshold of the flow.
Flow Lower limit alarm 1.The site flow rate is lower than the lower limit threshold of the flow ,modify the lower limit threshold of the flow.
No flow display when there is flow 1.Whether the cut-off valve is open
2.Signal line ground
3.The flow is too low and the small signal resection setting is too high
4.The empty pipe threshold is setting too low

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Picture of electromagnetic flow meter equipment

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