Selection of acid-base flowmeter

NegotiableUpdate on 05/19

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Overview

The selection of intelligent acid-base flowmeter consists of two parts: sensor and converter. It works based on Faraday's law of electromagnetic induction and is used to measure the volumetric flow rate of conductive liquids with a conductivity greater than 5 μ S/cm. It is an inductive instrument for measuring the volumetric flow rate of conductive media. In addition to measuring the volumetric flow rate of general conductive liquids, it can also be used to measure the volumetric flow rate of strong corrosive liquids such as strong acids and alkalis, as well as homogeneous liquid-solid two-phase suspensions such as mud, slurry, and pulp. Widely used in industrial sectors such as petroleum, chemical, metallurgical, textile, papermaking, environmental protection, food, as well as municipal management, water conservancy construction, river dredging and other fields for flow measurement.

Product Details

Selection of acid-base flowmeterOverview:
intelligenceSelection of acid-base flowmeterIt consists of two parts: sensors and converters. It works based on Faraday's law of electromagnetic induction and is used to measure the volumetric flow rate of conductive liquids with a conductivity greater than 5 μ S/cm. It is an inductive instrument for measuring the volumetric flow rate of conductive media. In addition to measuring the volumetric flow rate of general conductive liquids, it can also be used to measure the volumetric flow rate of strong corrosive liquids such as strong acids and alkalis, as well as homogeneous liquid-solid two-phase suspensions such as mud, slurry, and pulp. Widely used in industrial sectors such as petroleum, chemical, metallurgical, textile, papermaking, environmental protection, food, as well as municipal management, water conservancy construction, river dredging and other fields for flow measurement.
◆Measurement principle of acid-base flowmeter:
Sure LDE type intelligentAcid alkali flowmeterThe measurement principle is based on Faraday's law of electromagnetic induction: when a conductive liquid cuts magnetic field lines in a magnetic field, an induced potential is generated in the conductor, and the induced potential E is:

E=KBVD

Meaning of letters in the formula:
K - Instrument constant
B -- Magnetic induction intensity
V ------- Measure the average flow velocity within the pipeline interface
D - Measure the inner diameter of the cross-section of the pipeline
When measuring flow rate, a conductive liquid flows through a magnetic field with a velocity V perpendicular to the flow direction. The flow of the conductive liquid induces a voltage proportional to the average flow velocity, which is detected by two or more electrodes in direct contact with the liquid and sent to a converter through a cable for intelligent processing. The voltage is then displayed on an LED or converted into standard signals of 4-20mA and 0-1KHz for output.

◆Advantages and selling points of acid-base flowmeter:
1. The most important component of the sensor - the coil - is designed with precision, and through rigorous real current testing, the measurement accuracy of the product is effectively ensured
2. The signal electrode is subjected to electrostatic shielding treatment to ensure that small signals are not interfered by the coil and to ensure measurement accuracy at low flow rates
3. The coil is isolated from the outside world to ensure its long-term insulation strength, which in turn guarantees the long-term measurement accuracy of the sensor
4. All welding processes of the sensor are carried out using argon arc welding technology. Although the cost is high, it can ensure the reliability of welding (welding is the most important production process of the sensor), especially the last welding process after installing the coil. Using argon arc welding technology can ensure that the installed coil is not damaged
5. Adopting a grounding electrode structure to form a balanced electrode plane ensures that the entire process of measuring the average speed is limited to the balanced electrode plane, which can effectively eliminate electrical noise interference and provide accurate measurement results
6. Adopt customized double-layer shielded cables
7. Programmable low-frequency rectangular wave excitation improves the stability of flow measurement and reduces power loss
8. High frequency excitation is used for measuring special media (such as slurry) to eliminate clutter interference
9. Adopting a 16 bit embedded microprocessor, it has fast computing speed and high accuracy
10. All digital processing, strong anti-interference ability, reliable measurement, high accuracy
11. Ultra low EMI switching power supply, suitable for a wide range of power supply voltage changes, with good EMC resistance performance
12. Complete all functional designs with a single circuit board, using SMD devices and surface mount SMT (SMT) technology for high circuit reliability
13. High definition backlit Chinese LCD display, displaying cumulative flow rate, instantaneous flow rate, flow percentage, etc
14. Menu operation, easy to use, simple to operate, easy to learn and understand
15. Bidirectional measurement system, with three integrators inside that can display forward cumulative quantity, reverse cumulative quantity, and differential cumulative quantity respectively
16. Equipped with self checking and self diagnostic functions, and displayed on the screen
17. Lightning protection design
◆Reference range for flow rate of acid-base flowmeter:

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

◆Selection spectrum of acid-base flowmeter:

model	caliber
sure-LDE	15~2600
		code name	electrode material
		K1	316L
		K2	HB
		K3	HC
		K4	Titanium
		K5	Tantalum
		K6	Platinum alloy
		K7	Stainless steel coated with tungsten carbide
			code name	Lining material
			C1	Polytetrafluoroethylene F4
			C2	Perfluoroethylene propylene F46
			C3	Polyfluoroethylene FS
			C4	Polyvinyl rubber
			C5	Polyurethane rubber
				code name	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 effective frequency
				F3	RS485 interface
				T1	room 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

◆ Acid baseDiagram of electrode selection for flowmeter:

SUS316L stainless steel electrode

Titanium electrode

Tantalum electrode

◆Diagram for selecting lining materials for the measured medium of acid-base flowmeter:

Schematic diagram of rubber lining

Schematic diagram of PO lining