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Fiber slurry electromagnetic flowmeter

Shanghai Gangyu Automation Instrument Co., Ltd. www.gyzdhyb.com Phone: Fax: Mobile: GY-LED Electromagnetic Flow Meter is an inductive instrument that

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Shanghai Gangyu Automation Instrument Co., Ltd. www.gyzdhyb.com
Phone: Fax: Mobile:

GY-LEDElectromagnetic FlowmeterIt is an induction instrument that measures the volume flow rate of conductive medium inside a tube based on Faraday's law of electromagnetic induction. It uses embedded technology with a microcontroller to achieve digital excitation, and at the same timeElectromagnetic FlowmeterAdopting CAN fieldbus, which is the first of its kind in China, the technology has reached the leading level in the country.

GY-LEDElectromagnetic flow meters can not only meet on-site display requirements, but also output 4-20mA current signals for recording, regulation, and control. They have been widely used in industrial technology and management departments such as chemical, environmental protection, metallurgy, medicine, papermaking, and water supply and drainage.

GY-LEDIn addition to measuring the flow rate of general conductive liquids, electromagnetic flow meters can also measure the volumetric flow rate of liquid-solid two-phase flow, high viscosity liquid flow, and salt, strong acid, and strong alkali liquids.

Performance characteristics

The instrument structure is simple, reliable, without moving parts, and has a long working life.

There are no flow blocking components, and there is no pressure loss or fluid blockage.

◆ No mechanical inertia, fast response, good stability, can be applied to automatic detection, adjustment, and program control systems.

The measurement accuracy is not affected by the type of measured medium and its physical parameters such as temperature, viscosity, density, pressure, etc.

◆ Different combinations of PTFE or rubber lining and electrode materials such as Hc, Hb, 316L, Ti can adapt to the needs of different media.

There are various flow meter models available, including pipeline type and plug-in type.

Using EEPROM memory, the storage of measurement and operation data ensures safety and reliability.

◆ It has two types: integrated and separated.

High definition LCD backlit display.

Technical Parameter

Instrument accuracy: pipeline type 0.5 level, 1.0 level; Insertion type 2.5 level

Measurement medium: conductivity greater than 5 μ mS/Various liquid and liquid-solid two-phase fluids with a diameter of cm.

Flow velocity range: 0.2-8m/s

Work pressure: 1.6MPa

◆ Environmental temperature: -40 ℃ to+50 ℃

◆ Medium temperature: PTFE lining ≤ 180 ℃

Rubber material lining ≤ 65 ℃

Explosion proof mark: Exmibd Ⅱ BT4

Explosion proof certificate number: GYB01349

External magnetic interference: ≤ 400A/m

◆ Shell protection: Integrated type: IP65;

Detached type: Sensor IP68 (5 meters underwater,Limited to rubber lining only)

Converter IP65

Output signal: 4-20mA.DC, load resistance 0-750 Ω

Communication output: RS485 or CAN bus

◆ Electrical connection: M20 × 1.5 internal thread, φ 10 cable hole

Power supply voltage: 90-220V AC, 24 ± 10% V.DC

Maximum power consumption: ≤ 10VA

instrument selection

◆Range confirmation

The flow rate of the medium measured by the general industrial electromagnetic flowmeter should be 2-4m/s. In special circumstances, the minimum flow rate should not be less than 0.2m/s and the maximum should not be greater than 8m/s. If the medium contains solid particles, the commonly used flow rate should be less than 3m/s to prevent excessive friction between the lining and the electrode; For viscous fluids, the flow velocity can be chosen to be greater than 2m/s. A higher flow velocity helps to automatically eliminate the effect of viscous substances attached to the electrode, which is beneficial for improving measurement accuracy.

Under the condition that the range Q has been determined, the size of the flowmeter diameter D can be determined based on the range of flow velocity V mentioned above, and its value can be calculated by the following formula:

Q=πD²V/4
Q: Flow rate (㎡/h) D: Inner diameter of pipeline V: Flow rate (m/h)

The range Q of the electromagnetic flowmeter should be greater than the expected maximum flow value, while the normal flow value should be slightly greater than 50% of the flowmeter's full-scale scale.

◆ Reference flow range

Caliber (mm)	Flow range (m)³/h)	Caliber (mm)	Flow range (m)³/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

typetable

model	caliber
GY-LED	15~2600
		code	Electrode material
		K1	316L
		K2	HB
		K3	HC
		K4	titanium
		K5	tantalum
		K6	platinum alloy
		K7	Stainless steel coated with tungsten carbide
			code	Lining material
			C1	Polytetrafluoroethylene F4
			C2	Perfluoroethylene propylene F46
			C3	Polyfluoroethylene FS
			C4	Polyvinyl rubber
			C5	polyurethane rubber
				code	function
				E1	Level 0.3
				E2	Level 0.5
				E3	Level 1
				F1	4－20Madc, Load ≤ 750 Ω
				F2	0-3kHz, 5V active, variable pulse width, output high-end effective frequency
				F3	RS485 interface
				T1	Normal temperature type
				T2	High temperature type
				T3	Ultra high temperature type
				P1	1．0MPa
				P2	1．6MPa
				P3	4．0MPa
				P4	16MPa
				D1	220VAC±10％
				D2	24VDC±10％
				J1	Integrated structure
				J2	Split type structure
				J3	Explosion proof integrated structure

Main technical data:
Technical data of the whole machine and sensors

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	Indicating value:±0.3％(velocity of flow≥1m／s)；±3mm／s(velocity of flow<1m／s)
	DN700—DN3000	Indicating value±0.5％(velocity of flow≥0.8m／S)；±4mm／s(velocity of flow<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℃—ten60℃
	Converter and integrated model	—10℃—ten60℃
Lining material	Polytetrafluoroethylene, chloroprene rubber, polyurethane, perfluoroethylene propylene(F46)Add NetworkPFA
Maximum fluid temperature	—body type	70℃
	separated	Polychloroprene rubber lining	80℃；120℃(Please indicate when placing an order)
		Polyurethane lining	80℃
		PTFE lining	100℃；150℃(Please indicate when placing an order)
		FEP(F46)
		screeningPFA
Signal electrode and ground electrode materials	stainless steel0Crl8Nil2M02TiHastelloy alloyCHastelloy alloyBTitanium, tantalum, platinum/iridium alloy, stainless steel coated with tungsten carbide
Electrode scraper mechanism	DN300—DN3000
Connecting flange material	carbon steel
Grounding flange material	stainless steel1Crl8Ni9Ti
Imported protective flange materials	DN65—DNl50		stainless steel1Crl8Ni9Ti
	DN200～DNl600		Carbon steel and stainless steel1Crl8Ni9Ti
Shell protection	DNl5～DN3000Separable rubber or polyurethane lined sensor			IP65perhapsIP68
	Other sensors——Body type flowmeter and separation type converter			IP65
spacing(separated)	The distance between the converter and the sensor is generally not more than100m

Converter technology data

power supply

exchange

85—265V，45—400Hz

direct-current

11—40V

Operation keys and display

Touch-tone

4A thin film button can be used to set and select all parameters, and can also be utilizedPCmachine(RS232)Programming the converter settings;

3goLCDWide viewing angle, wide temperature range, backlit display;

auxiliary word for ordinal numbers1Display traffic values in rows;

auxiliary word for ordinal numbers2Display flow units in rows;

auxiliary word for ordinal numbers3Display the percentage of traffic, total forward, total reverse, total difference, alarm, and flow rate.

Magnetic key type

2A magnetic key is used to display parameter selection and reset, utilizingPCmachine(RS232)Programming the converter settings;

2goLCDWide viewing angle, wide temperature range, backlit display:

auxiliary word for ordinal numbers1go:Magnetic key selection:Display traffic percentage, forward total amount, reverse total amount, difference total amount, alarm, and flow rate.

auxiliary word for ordinal numbers2Row: Display traffic.

Internal integrator

Positive total, negative total, and differential total.

output signal

Unidirectional analog output

Fully isolated, load≤600D．(20mAtime)；

upper limit:0—21mAOptional, each levellmA；

Lower limit:0—21mAOptional, each level1mA；

Programming for forward and reverse flow output modes.

Bidirectional analog output

The lower limit is. perhaps4mA, other analog outputs in the same direction.

Bidirectional pulse output

Two outputs correspond to forward and reverse flow respectively,frequency0～800Hz,upper limit1—800Hzoptional,Each levelIHz；

Square wave or selected pulse width, selected upper limit of pulse width2．5SEach level1ms；

Passive isolation transistor switch output, capable of absorbing250mACurrent, withstand voltage35V.

Dual channel alarm output

Can be alarmed(programming)High/low flow rate, air traffic control, fault status, positive/negative flow rate, analog quantity exceeding range, pulse quantity exceeding range, pulse small signal cutoff, optional output polarity;

Transistor switch output with isolation protection,absorbable250mAThe current,pressure resistance35V.(Not isolated from pulse output)

digital communication

RS232，RS485，HART

Selection of lining

Lining material	Performance?	Maximum medium temperature		scope of application
Lining material	Performance?	—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. 2Sanitary media.
Perfluoroethylene propylene（F46)	sameF4The wear resistance and negative pressure resistance are higher thanF4.		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.2Resistant 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

Imported protective flanges and grounding flanges(Or grounding ring)Selection of

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.

Selection of electrodes

Electrode material	Corrosion resistance and wear resistance
stainless steel0Crl8Nil2M02Ti	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 alloyB	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 alloyC	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 oxidative salts such as:Fe，”、、Cu”Corrosion caused by or containing other oxidants, such as hypochlorite solutions above room temperature and seawater corrosion
titanium	Capable of withstanding seawater, various chlorides and hypochlorites, and oxidizing acids(Including fuming sulfuric acid)Corrosion caused by organic acids and alkalis. Not resistant to relatively pure reducing acids(Like sulfuric acid, hydrochloric acid)Corrosion, but if acid contains oxidants(Such as nitric acidFc++Cu＋＋)At this time, 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——Cutting chemical media(Including boiling point hydrochloric acid, nitric acid, andl 50℃The following sulfuric acid)Corrosion. Dig in alkali; Corrosion resistance.
Platinum/titanium alloy	Almost capable——Cut 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.

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