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Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
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Industry Information
Electromagnetic flowmeter manufacturer
2011-6-13 8:28:48

I. electromagnetic flowmeter manufacturers

由传感器和转换器两部分构成。 Jinhu Dongxiang Instrument Co., Ltd. is a professional manufacturer of electromagnetic flowmeters . Intelligent electromagnetic flowmeters are composed of sensors and converters. It is based on Faraday's law of electromagnetic induction. It is used to measure the volume flow of conductive liquids with a conductivity greater than 5 μS / cm. It is an inductive meter that measures the volume flow of conductive media. In addition to measuring the volume flow of general conductive liquids, it can also be used to measure the volume flow of highly corrosive liquids such as strong acids and alkalis, and uniform liquid-solid two-phase suspension liquids such as mud, ore pulp, and pulp.

The electromagnetic flowmeter produced by Jinhu Dongxiang Instrument Co., Ltd. is widely used in petroleum, chemical, metallurgy, light textile, papermaking, environmental protection, food and other industrial sectors and municipal management, water conservancy construction, river dredging and other fields.
Second, the characteristics of electromagnetic flowmeter
l Full digital processing, strong anti-interference ability, reliable measurement, high accuracy, and flow measurement range up to 150: 1
l Ultra-low EMI switching power supply, suitable for a wide range of power supply voltage and good EMI resistance.
l 16-bit embedded microprocessor, fast calculation speed, high precision, programmable frequency low frequency rectangular wave excitation, improve the stability of flow measurement and low power consumption.
l Adopt SMD device and surface mount (SMT) technology, high circuit reliability.
l There are no moving parts and no choke parts in the pipeline, and there is almost no additional pressure loss in the measurement.
l The range can be modified online at the site according to the actual needs of the user.
l The measurement result has nothing to do with physical parameters such as velocity distribution, fluid pressure, temperature, density, and viscosity.
l High-definition backlit LCD display, full Chinese menu operation, easy to use, simple operation, easy to learn and understand.
l RS485, RS232, Hart and Modbus digital communication signal output. (Optional)
l With self-checking and self-judgement functions.
l Hourly total recording function, which records the total amount of flow in hours, which is applicable to the time-sharing measurement system (optional)
l There are three totalizers inside which can display the forward cumulative quantity, the reverse cumulative quantity and the difference cumulative quantity. There is always built-in without power failure, which can record 16 times of power failure. (Optional)
l Infrared handheld operator, 115KHZ communication speed, all functions of long-distance non-contact converter (optional)
Technical parameters of electromagnetic flowmeter
Nominal diameter (mm)
(Special specifications can be customized)
Pipeline PTFE lining: DN10 ~ DN600
Pipeline rubber lining: DN40 ~ DN1200
Flow direction:
Positive, negative, net flow
Range ratio:
:1 150 : 1
Repeatability error:
± 0.1% of measured value
Accuracy level:
Pipelined: 0.5, 1.0
Measured medium temperature:
Ordinary rubber lining: -20 ~ + 60 ℃
High temperature rubber lining: -20 ~ + 90 ℃
Polytetrafluoroethylene lining: -30 ~ + 100 ℃
High temperature type PTFE lining: -20 ~ + 180 ℃
Fixed work stress:
(High voltage can be customized)
-DN80:≤1.6MPa DN6-DN80: ≤1.6MPa
-DN250:≤1.0MPa DN100- DN250: ≤1.0MPa
-DN1200:≤0.6MPa DN300- DN1200: ≤0.6MPa
Flow rate range:
-15m/s 0.1 -15m / s
Conductivity range:
Measured fluid conductivity ≥5μs / cm
Current output:
Load Resistance
~10mA:0~1.5kΩ 0 to 10 mA: 0 to 1.5 kΩ
~200mA:0~750 kΩ 4 to 200 mA: 0 to 750 kΩ
Digital frequency output:
The upper limit of the output frequency can be set within 1 ~ 5000HZ. The open collector bidirectional output of the transistor with photoelectric isolation is provided. When the external power supply is ≤35V, the maximum current of the collector is 250mA
Power supply:
或DC24V AC220V or DC24V
Required straight pipe length
Upstream ≥5DN, downstream ≥2DN
Connection method:
The flowmeter and piping are flanged, and the flange connection size should meet the requirements of GB11988.
Explosion-proof grade:
mdIIBT4
Protection class:
,特殊订制最高可达IP68 IP65 , special order up to IP68
Ambient temperature:
-25 ~ + 60 ℃
Relative temperature:
~95% 5% to 95%
Total power consumption:
Less than 20W
选型代码: 1. Selection code:
model
Description
LDE
-
-
The way to
10-2200mm
combination
S
Integrated
Electrode material
M
stainless steel
T
(钛) Ti (titanium)
D
(钽) Ta (tantalum)
H
Hastelloy
P
Pt platinum
N
Ni nickel
output method
0
no output
1
4-20mA / 1-5KHz
2
4-20mA
Lining material
X
rubber
F
Teflon
P
Polyethylene
J
Polyurethane rubber
Show in place
0
No local display
1
Show in place
communication method
0
No communication
1
RS485
2
RS232
3
Mobdus
4
Hart
Ground
0
Without ground loop
1
With ground ring
2
With ground electrode
Maximum traffic
(n)
Maximum flow (range) m3 / h

测量污水,用户管道为DN50,要求橡胶材料衬里,不锈钢电极,4~20mA输出,无通讯,上限流量为30m3/h。 Example: An in-situ electromagnetic flowmeter is used to measure sewage. The user pipe is DN50. It requires rubber lining, stainless steel electrodes, 4-20mA output, no communication, and the maximum flow rate is 30m3 / h. The model should be: LDE-50S-M1X100-30
测量范围的选择 2. Selection of measurement range
Inner diameter (mm)
10
15
20
25
32
40
50
65
(m3/h) Qmin (m3 / h)
0.0283
0.0636
0.12
0.176
0.29
0.452
0.7
1.19
(m3/h) Qmax (m3 / h)
4.24
9.54
16.96
26.5
43.42
67.85
106.0
179.0
Inner diameter (mm)
80
100
125
150
200
250
300
350
(m3/h) Qmin (m3 / h)
1.8
2.82
4.41
6.36
11.3
17.6
25.4
34.6
(m3/h) Qmax (m3 / h)
271.0
424.0
662.0
954.0
1690
2650
3810
5190
Inner diameter (mm)
400
450
500
550
600
700
800
900
(m3/h) Qmin (m3 / h)
45.2
57.2
77.6
85.5
101.0
138.0
180.0
229.0
(m3/h) Qmax (m3 / h)
6780
8570
10600
12800
15200
20700
27100
34300
Inner diameter (mm)
1000
1100
1200
1400
1600
1800
2000
2200
(m3/h) Qmin (m3 / h)
282.0
342.0
407.0
554.1
732.7
916.0
1131.0
1368.4
(m3/h) Qmax (m3 / h)
42400
51300
61000
83121
108566
137404
169635
205258
电极材料的选择 3. Selection of electrode materials
The material of the electrode should be selected according to the corrosiveness of the fluid being tested. Please refer to the relevant manual. Corrosion test should be performed for special fluid
material
Code
Corrosion resistance
不锈钢 316L stainless steel
V
适用于工业、生活用水,原水井水,城市污水等中性溶液 1Suitable for industrial, domestic water, raw well water, urban sewage and other neutral solutions
2 Weakly corrosive acids, alkalis, salt media such as carbonic acid, acetic acid, etc.
Hastelloy C
HC
适用于耐氧化性酸,如硝酸、混酸、铬酸与硫酸的混合物 1 Suitable for oxidation resistant acids, such as nitric acid, mixed acid, mixture of chromic acid and sulfuric acid
2 Corrosion resistance to oxidative salts or other oxidant environments such as Fe, Cu
3Excellent corrosion resistance to seawater, alkali solution and oxide solution
4 Not applicable: hydrochloric acid
Hastelloy B
HB
对于非氧化酸、碱、盐如硫酸、磷酸、氢氟酸有良好的腐蚀性 1Good corrosion resistance to non-oxidizing acids, bases, salts such as sulfuric acid, phosphoric acid, hydrofluoric acid
2 Not applicable: Nitric acid
titanium
Ti
Resistant to seawater, all kinds of chlorides, suddenly hypochlorite and many kinds of hydroxides
Tantalum
Ta
With the exception of hydrofluoric acid, it is resistant to almost all chemical media. But expensive
platinum
Pt
Suitable for all acid and alkali salt solutions (fuming sulfuric acid and nitric acid)
Tungsten carbide
W
Has excellent abrasion resistance and is specially used for abrasive media such as mud and pulp
内衬材料的选择 4. Choice of lining material
The lining material should be selected according to the corrosive wear and temperature of the tested medium
Lining material
Corrosion resistance
Operating temperature
Scope of application
Neoprene Ne
Resistant to general low concentrations of acid and alkali salts
~70℃ -20 to 70 ° C
Low concentration acid and alkali salts in industrial water and sewage
Polyurethane rubber PO
Has excellent abrasion resistance, dedicated to strong abrasive slurry, non-corrosive
~60℃ -10 ~ 60 ℃
Liquids containing solid particles (cement slurry, etc.)

FEP
耐热耐腐蚀性与PTFE相当 1 heat and corrosion resistance equivalent to PTFE
2High mechanical strength and good anti-wear performance
3The inner surface is smooth, and it is not easy to adhere to sediment
4 has good resistance to negative pressure and vacuum
~180℃ -40 to 180 ° C
All fluids except for abrasive media such as mortar. Same as PTFE, can be used in beverages and other hygienic media
Teflon PTFE
Corrosion resistance to almost all chemical media, poor wear resistance
~180℃ -40 to 180 ° C
Cannot be used in negative pressure pipelines and highly abrasive fluids

Jinhu Dongxiang Instrument Company Sales Hotline: 0517-86900920 0517-86900901 18952332920