Execution standards	JB／T 9248—1999
Nominal Diameter	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, 1600, 1800, 2000, 2200, 2400, 2600, 2800, 3000
Maximum flow velocity	15m／s
accuracy	DNl5～DN600	Indication: ± 0.3% (flow rate ≥ 1m/s); ± 3mm/s (flow rate ‹ 1m/s)
	DN700—DN3000	± 0.5% of the indicated value (flow rate ≥ 0.8m/S); ± 4mm/s (flow rate ‹ 0.8m/S)
Fluid conductivity	≥5uS／cm
nominal pressure	4.0MPa	1.6MPa	1.0MPa	0.6MPa	6.3、 10MPa
	DNl5～DN150	DNl5～DN600	DN200～DN1000	DN700～DN3000	Special Orders
ambient temperature	sensor	-25 ℃ -+60 ℃
	Converter and integrated model	-10 ℃ -+60 ℃
Lining material	Polytetrafluoroethylene, chloroprene rubber, polyurethane, perfluoroalkoxy (F46), mesh PFA
Maximum fluid temperature	- Body type	70℃
	separated	Polychloroprene rubber lining	80℃； 120 ℃ (specify when ordering)
		Polyurethane lining	80℃
		PTFE lining	100℃； 150 ℃ (specify when ordering)
		Perfluoroethylene propylene (F46)
		Mesh PFA
Signal electrode and ground electrode materials	Stainless steel 0Crl8Nil2M02Ti, Hastelloy C, Hastelloy B, titanium, tantalum, platinum/iridium alloy, stainless steel coated with tungsten carbide
Electrode scraper mechanism	DN300—DN3000
Connecting flange material	carbon steel
Grounding flange material	Stainless steel 1Cr18Ni9Ti
Imported protective flange materials	DN65—DNl50		Stainless steel 1Cr18Ni9Ti
	DN200～DNl600		Carbon steel and stainless steel 1Cr18Ni9Ti
Shell protection	DNl5DN3000 separable rubber or polyurethane lined sensor			IP65Or IP68
	Other sensors, body type flow meters, and separate converters			IP65
Distance (separated type)	The distance between the converter and the sensor is generally not more than 100m

Caliber mm	Flow range m3/h	Caliber mm	Flow range m3/h
φ15	0.06~6.36	φ450	57.23～5722.65
φ20	0.11～11.3	φ500	70.65～7065.00
φ25	0.18～17.66	φ600	101.74～10173.6
φ40	0.45～45.22	φ700	138.47～13847.4
φ50	0.71～70.65	φ800	180.86～18086.4
φ65	1.19～119.4	φ900	228.91～22890.6
φ80	1.81～180.86	φ1000	406.94～40694.4
φ100	2.83～282.60	φ1200	553.90～55389.6
φ150	6.36～635.85	φ1600	723.46～72345.6
φ200	11.3～1130.4	φ1800	915.62～91562.4
φ250	17.66～176.25.	φ2000	1130.4～113040.00
φ300	25.43～2543.40	φ2200	1367.78～136778.4
φ350	34.62～3461.85	φ2400	1627.78～162777.6
φ400	45.22～4521.6	φ2600	1910.38～191037.6

Lining material	Performance	Maximum medium temperature		scope of application
		—body type	separated
Polytetrafluoroethylene (F4)	It is the most chemically stable plastic, capable of withstanding boiling hydrochloric acid, sulfuric acid, nitric acid, and aqua regia, as well as concentrated alkali and various organic solvents. Not resistant to corrosion from chlorine trifluoride, high-temperature chlorine trifluoride, high flow rate liquid fluorine, liquid oxygen, and auto oxygen.	70℃	100℃ 150℃(Special order required)	1Strong corrosive media such as concentrated acid and alkali. 2. Sanitary media.
Perfluoroethylene propylene (F46)	Same as F4, its wear resistance and negative pressure resistance are higher than F4.		ditto
Polyfluoroethylene (Fs)	The upper limit of applicable temperature is lower than that of polytetrafluoroethylene, but the cost is also lower.		80℃
neoprene	1Has excellent elasticity, high tensile strength, and good wear resistance. 2. Resistant to corrosion in general low concentration acid, alkali, and salt media, but not resistant to corrosion in oxidizing media.		80℃ 120℃(Special order required)	Water, sewage, and weakly abrasive slurry.
polyurethane	1Extremely strong wear resistance. 2Poor corrosion resistance.		80℃	Neutral strong abrasion slurry, coal slurry, mud

Type of flange	Scope of application
Grounding flange (or grounding ring)	Suitable for non-conductive pipelines such as plastic pipes, but sensors with grounding electrodes do not require them.
Import protection flange	Choose when the medium has strong wear resistance.

Electrode material	Corrosion resistance and wear resistance
Stainless steel 0Crl8Nil2M02Ti	Used for weakly corrosive media such as industrial water, domestic water, sewage, etc., suitable for industrial sectors such as petroleum, chemical, steel, as well as municipal and environmental protection fields.
Hastelloy B	It has good corrosion resistance to all concentrations of hydrochloric acid below boiling point, as well as to non chlorinated acids, bases, and non oxidizing salt solutions such as sulfuric acid, phosphoric acid, hydrofluoric acid, and organic acids.
Hastelloy C	Can withstand corrosion from non oxidizing acids such as nitric acid, mixed acids, or mixed media of chromic acid and sulfuric acid, as well as corrosion from oxidizing salts such as Fe, Cu, or other oxidants such as hypochlorite solutions above room temperature and seawater
titanium	Capable of withstanding corrosion from seawater, various chlorides and hypochlorites, oxidizing acids (including fuming sulfuric acid), organic acids, and alkalis. Not resistant to the corrosion of relatively pure reducing acids (such as sulfuric acid, hydrochloric acid), but if the acid contains oxidants (such as nitric acid, Fc++, Cu++), the corrosion is greatly reduced.
tantalum	It has excellent corrosion resistance and is very similar to glass. Except for hydrofluoric acid, fuming sulfuric acid, and alkali, it can almost withstand corrosion from cutting chemical media (including boiling point hydrochloric acid, nitric acid, and sulfuric acid below 50 ℃). Dig in alkali; Corrosion resistance.
Platinum/titanium alloy	Almost capable of cutting chemical media, but not suitable for aqua regia and ammonium salts.
Stainless steel coated with tungsten carbide	Used for non corrosive and highly abrasive media.
Note: Due to the wide variety of media and the complex factors such as temperature, concentration, and flow rate that affect their corrosiveness, this table is for reference only. Users should make their own choices based on the actual situation, and if necessary, conduct corrosion resistance tests on the selected materials, such as hanging plate tests.

Specification code

describe

enterprise standard

Instrument type

LDE

Intelligent electromagnetic flowmeter

Instrument type

LDM

Ordinary electromagnetic flowmeter

Path code

-XXX

Example: 100 represents DN100. If the diameter is followed by I, it means insertion type, and AI means adjustable insertion type

Electrode form

-1

Standard fixed type

2

Scraper type

3

Removable and replaceable

Electrode material

0

stainless steel

1

Platinum Pt

2

Ha Shi B (HB)

3

Tantalum Ta

4

Titanium Ti

5

Ha Shi C (HC)

liningmaterial

3

chloroprene rubber

4

Polyurethane rubber

5

F4

6

F46

7

F40

8

P0

9

PPS

Rated pressure (MPa)

-4.0

DN10-80

1.6

DN100-150

1.0

DN200-1000

0.6

DN1100-2000

0.25

DN2200

operation temperature

E

<80oC

H

<180oC

ground ring

-0

No grounding ring

1

There is a grounding ring

protection grade

0

IP65

1

IP68

Converter type

0

Integrated

1

split type

communication

0

not have

1

RS-485

2

Hart

3

PAbus

4

FFbus

Housing material

-0

carbon steel

1

stainless steel

Body flange

0

carbon steel

1

stainless steel

Install the matching flange

0

without

1

belt

power supply

0

220VAC

1

24VDC

Instrument range

（XXX）

Example: (2000) indicates that the maximum flow rate corresponding to 20mA is 2000M3/h

◆ Selection of installation location:
In order to ensure stable operation of the transmitter, the following requirements should be noted when selecting the installation location:
1) Try to avoid ferromagnetic objects and specific equipment with strong electromagnetic fields (such as large motors, transformers, etc.) to prevent the magnetic field from affecting the working magnetic field and flow information of the sensor.
2) It should be installed in a dry and ventilated place as much as possible, and should not be installed in damp or water prone areas.
3) Try to avoid direct sunlight and rain, and avoid environments with temperatures above 45 ℃ and relative humidity greater than 95%
4) Choose a place that is easy to maintain and has convenient activities
5) The flowmeter should be installed at the rear end of the water pump and must not be installed on the suction side; The valve should be installed on the downstream side of the flowmeter.

How to install on pipelines:
It should be installed at the lower and vertically upward positions of the horizontal pipeline, avoiding installation at the highest point and vertically downward position of the pipeline;

Should be installed at the rising point on the pipeline;

When installing an open discharge pipeline, it should be installed at the lower part of the pipeline;

If the pipeline drop exceeds 5m, install an exhaust valve downstream of the sensor;

Control valves and shut-off valves should be installed downstream of the sensor, rather than upstream of the sensor;

Sensors should never be installed at the inlet and outlet of the pump, but rather at the outlet of the pump;

Method of installing flow meters in measuring wells

1. Entrance	2. Overflow pipe	3. Entrance barrier	4. Cleaning hole
5. Flow meter	6. Short tube	7. Export	8. Discharge valve

How to choose the installation node correctly:
Choosing the correct installation point and installing the flow meter correctly are both very important steps. If there is a mistake in the installation process, it can affect the measurement accuracy in mild cases, the service life of the flow meter in severe cases, and even damage the flow meter.
Special attention should be paid when selecting the installation location:
·The axis of the non measuring electrode must be approximately horizontal;

·The measuring pipeline must be completely filled with liquid;

·There should be a minimum of 5 * D (D is the inner diameter of the flowmeter) of straight pipe section in front of the flowmeter, and a minimum of 3 * D (D is the inner diameter of the flowmeter) of straight pipe section behind it;
·The flow direction of the fluid is consistent with the arrow direction of the flowmeter;
·Vacuum inside the pipeline can damage the lining of the flowmeter, so special attention should be paid;
·There should be no strong electromagnetic field near the flowmeter;
·There should be ample space near the flowmeter for installation and maintenance;
·If there is vibration in the measuring pipeline, there should be fixed supports on both sides of the flowmeter. When measuring mixed liquids of different media, the distance between the mixing point and the flowmeter should be at least 30 × D (D is the inner diameter of the flowmeter). To facilitate the cleaning and maintenance of the flowmeter in the future, a bypass pipeline should be installed;