Lithium battery electromagnetic flowmeter

The RL-LDE lithium battery electromagnetic flowmeter is 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 strongly corrosive liquids such as strong acids and alkalis, as well as homogeneous liquid-solid two-phase suspensions such as mud, slurry, and pulp, as shown in Figure 1.

Figure 1

2、 Performance characteristics

3、 Lining selection

Lining material	Performance	Maximum medium temperature		scope of application
		All-In-One	separated
Polytetrafluoroethylene（F4)	It is a chemically stable plastic that can withstand 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℃ 250℃ (Special order required)	1. Strong corrosive media such as concentrated acid and alkali. 2. Sanitary media.
Perfluoroethylene propylene（F46)	sameF4， 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	1. Has 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.		80℃	Neutral strong abrasion slurry, coal slurry, mud
	2Poor corrosion resistance.

4、 Electrode selection

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:Corrosion under Fc+, Cu+or with other oxidants, such as corrosion in hypochlorite solutions above room temperature or seawater
titanium	Capable of withstanding seawater, various chlorides and hypochlorites, and oxidizing acidsCorrosion caused by (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 withstandCorrosion of a chemical medium (including boiling point hydrochloric acid, nitric acid, and sulfuric acid below 50 ℃). Dig in alkali; Corrosion resistance.
Platinum/titanium alloy	Can withstand almost all 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.

5、 Comparison Table of Flow Caliber

calibermm	Flow range m ³/h	calibermm	Flow range m ³/h
DN10	0.16~2.5	DN400	250～4000
DN15	0.4~6	DN500	400～6000
DN20	0.6～12	DN600	600～10000
DN25	1.0～16	DN700	800～12000
DN32	1.6~25	DN800	1000～16000
DN40	2.5～40	DN900	1200～20000
DN50	4.0～60	DN1000	1600～25000
DN65	6.0～120	DN1200	2500～30000
DN80	10～160	DN1400	3000～50000
DN100	16～250	DN1600	3000～60000
DN125	25~400	DN1800	5000～60000
DN150	40～600	DN2000	6000～100000
DN200	60～1000	DN2200	1367.78～136778.4
DN250	100～1600	DN2400	1627.78～162777.6
DN300	160～2500	DN2600	1910.38～191037.6
DN350	200～3000	DN2800	2306.56 ~ 236062.8

6、 Product selection

7、 Installation specifications

1. 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;

2. Should be installed at the rising point on the pipeline;

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

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

5. Sensors should never be installed at the inlet and outlet of the pump, they should be installed at the outlet of the pump.