Measurement of caustic soda flowmeter

Measurement of caustic soda flowmeter

A caustic soda flowmeter is a volumetric flow measurement instrument that is not affected by the temperature, viscosity, density, and conductivity (within a certain range) of the measured medium during the measurement process.

The range of caustic soda flowmeter is wide, up to 1:100. In addition, the caustic soda flowmeter is only proportional to the average flow velocity of the measured medium, and is independent of the axisymmetric flow state (laminar or turbulent).

The caustic soda flowmeter has no mechanical inertia, sensitive response, can measure instantaneous pulsating flow rate, and has good linearity. Therefore, the measurement signal can be directly converted linearly into a standard signal output using a converter. LD-T type can indicate on-site, while LD type can transmit over long distances.

Measurement of caustic soda flowmeterOverview:

The measurement principle of the integrated caustic soda flowmeter is Faraday's law of electromagnetic induction. The main components of the sensor are the measuring tube, electrode, excitation coil, iron core, and magnetic yoke housing. The caustic soda flowmeter is mainly used to measure the volumetric flow rate of conductive liquids and slurries in closed pipelines. Including highly corrosive liquids such as acids, alkalis, salts, etc. Caustic soda flow meters are widely used for flow measurement and control in production processes in industries such as petrochemicals, steel metallurgy, water supply and drainage, irrigation, water treatment, environmental wastewater control, papermaking, medicine, food, and agriculture; Suitable for measuring the total amount of conductive liquids.

No flow blocking components, 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 materials 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.

Introduction:

The caustic soda flowmeter is developed based on Faraday's law of electromagnetic induction and is used to measure the volumetric flow rate of conductive fluids. Due to the characteristics of *, it has been widely used in the measurement of various conductive liquids in industry. Mainly used in industries such as chemical, papermaking, food, textile, metallurgy, environmental protection, and water supply and drainage, it can achieve system control when paired with computers.

The caustic soda flowmeter has no movable parts or flow blocking components, which will not cause pressure loss, wear, blockage or other problems.

Product Features:

1. Measurement is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity;
2. Measure the flow components inside the tube, with no pressure loss and low requirements for straight pipe sections;
3. Series nominal diameter DN15~DN3000. There are multiple options for sensor lining and electrode materials;
4. The converter adopts a novel excitation method, with low power consumption, stable zero point, and high accuracy. The flow range can reach 1500:1;
5. The converter can be integrated or separated from the sensor;
6. The converter adopts a 16 bit high-performance microprocessor, 2x16 LCD display, convenient parameter setting, and reliable programming;
7. The flowmeter is a bidirectional measurement system equipped with three integrators: forward total, reverse total, and differential total; Can display. Zhuang, reverse flow, and have multiple outputs: current, pulse, digital communication HART；
8. The converter adopts surface mount technology (SMT) and has self checking and self diagnostic functions

execution standard

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

Flow rate 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

fluid temperature

- Body type

70℃

Separated type

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 mechanism

DN300—DN3000

Connecting flange material

carbon steel

Grounding flange material

Stainless steel 1Cr18Ni9Ti

Import protection

Flange material

DN65—DNl50

Stainless steel 1Cr18Ni9Ti

DN200～DNl600

Carbon steel and stainless steel 1Cr18Ni9Ti

Shell protection

DNl5~DN3000 separable rubber or polyurethane lined sensor

IP65 or 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

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.

哈氏合金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, 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 corrosion

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 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.