SI-3706 Target Flow Meter

Measurable Medium	Gases, Liquids, Steam
Diameter	DN15~DN2000
Temperature	-200℃~500℃
Pressure	0~42MPa
Accuracy	0.5%~1.5%
Compensation Method	Temperature compensation, Pressure compensation
Output Signal	Two-wire/Four-wire 4-20mA, Pulse, 0-5V, RS485, HART

RFQ

What is a Target Flow Meter?

A target flow meter is an instrument that measures flow rate by utilizing the pressure difference caused by the fluid passing through a target. Target flow meters are also known as drag force flow meters.

When the medium flows through the measuring pipe, a pressure difference is generated due to its kinetic energy acting on the flow obstruction (target plate), resulting in a force on the obstruction. The magnitude of this force is directly proportional to the square of the fluid velocity. This is somewhat similar to differential pressure flow measurement.

Features

Technical Specifications

Target Flow Meter Working Principle

When the medium flows in the measuring tube, the pressure difference caused by its own kinetic energy passing through the blocking member (target). And has a force on the blocking member. The magnitude of the force is proportional to the square of the velocity of the medium.

The mathematical way is as follows:
F = CdAρ • V2 / 2 

In the formula: F —— the force of the choke (kg)
Cd-object resistance coefficient
A ——Axial projection area of ​​the choke on the measuring tube (mm2)
ρ ——Density of medium under working conditions (kg / m3)
v-average flow velocity of the medium in the measuring tube (m / s)
The force F received by the choke member (target) is transmitted to the capacitive force sensor via a rigidly connected transmission member (stem).

And the capacitive force sensor generates a voltage signal output:
V = KF
In the formula:
V——Voltage output by the capacitive force sensor (mV), K——Proportional constant, F——The acting force of the choke (target)
So, after the voltage signal is pre-amplified, AD converted. And processed by the computer. The corresponding instantaneous flow and cumulative total can be obtained.

Target Flow Meter Types

Structurally, target-type flowmeters can be classified into:

1. Flanged pipe type (DN15~DN500)
2. Wafer/Clamp type (DN15~DN500)
3. Threaded type (DN15~DN100)
4. Quick-connect/Clamp type (DN15~DN100)
5. Insertion type/Ball valve fixed insertion type/In-line removable type (DN100~DN3000)

Featured Applications

Target flow meters are particularly suitable for difficult-to-measure flow conditions such as high viscosity, dirty media, scaling and clogging, high temperature, low temperature, and strong corrosion. They are widely used in petroleum, chemical, metallurgy, power, pharmaceutical, environmental protection, food and other fields. Measurable media include:

Gases:

• Gas, air, hydrogen, natural gas, nitrogen, liquefied petroleum gas.
• Hydrogen peroxide, flue gas, methane, butane, chlorine, etc.

Liquids:

• Heavy oil, paraffin, asphalt, sulfuric acid.
• Cooking oil, residue oil, acetone, diesel, mine water, detergent, soy sauce, gasoline, silicone oil.
• Syrup, solvent, perfume, seawater.
• Aviation kerosene, soap ketone water, glucose, canolaic acid, salt water, paste, ink, coolant.
• Glycol, mineral oil, liquid sugar, hydrochloric acid.
• Automotive coatings, resin, butter, vegetable oil, liquid oxygen, shampoo, toothpaste, gel.
• Fuel, milk, bleach, conditioner, soda, additive.
• Cleaning agent, alkaline, ammonia, marine oil, chemical reagent, kerosene,
• Glycerin, dye, water, nitric acid.
• High boiling point organic solution, lard, alcohol, oil, ethylene, polypropylene, methylbenzyl, etc.

Steam:
Superheated steam, saturated steam.

Target Flow Meter Advantages

Target flowmeters are mainly used for flow measurement of high viscosity fluids. What are the advantages of target flowmeters:

1. The entire instrument structure of the target flowmeter is very solid and has no moving parts. The overall design adopts plug-in structure, which is convenient for disassembly, cleaning and maintenance;
2. A variety of anti-corrosion materials and high and low temperature resistant materials. For example, Hastelloy, titanium, etc. can be used in the production of target flowmeters;
3. The whole target flowmeter can be made fully sealed without dead ends. The entire meter has no leaks. Able to withstand high pressure of 42MPa;
4. The instrument of the target flowmeter is equipped with a self-inspection program. The fault phenomenon is clearer;
5. The sensor does not come into contact with the measured medium during measurement. Therefore, there is no wear and tear of parts, and it is safe to use;
6. The calibration of the target flowmeter is convenient, and the method of dry calibration can be directly used on the spot, that is, the weight-hanging method. One-key operation can complete the calibration;
7. There are various installation methods to choose from. For example, you can choose the common online plug-in type, and the installation cost is low;
8. With integrated temperature and pressure compensation. Can directly output the quality or standard;
9. Small signal cut-off and non-linear correction can be performed. At the same time, the filter time can also be selected;
10. Not only can it accurately measure various normal temperatures, but it can also measure gas and liquid flow rates at high temperatures of 500 degrees and low temperatures of -200 degrees. Wide range of temperature measurement;
11. The measurement of the target flowmeter is accurate, and the accuracy can reach 0.2%;
12. Good repeatability, generally 0.05% ~ 0.08%, fast measurement;
13. The pressure loss is small, only about 1/2△P of the standard orifice plate;
14. Anti-interference, anti-impurity ability is extremely strong;
15. The measuring range can be changed by replacing the baffle (target piece) according to actual needs;
16. On-site display of low power consumption battery, can read the indicated value online directly. The display screen can read instantaneous and cumulative flow and percentage bar graph at the same time;
17. Easy to install and easy to maintain;
18. Various output forms, can transmit various parameters remotely;
19. Strong vibration resistance, can measure pulsating flow within a certain range.

Target Flow Meter Disadvantages

1. Since the target plate and target rod of the target flowmeter have their own weight, the zero point must be reset after installation;
2. Not suitable for continuous working fluid measurement environment, frequent switching engineering will affect;
3. The range is narrow, and the range of general instruments is 10:1;
4. The accuracy is not very high, and it is generally used as a process control meter, and it should be used with caution in trade settlement;
5. There is drift (usually with compensation);
6. Easy to vibrate (generally add damping parts);
7. The target chip is easy to fall off (operation reason);

Order Guide

The target type flowmeter is suitable for a variety of occasions and measurements of various media. In order to ensure satisfactory results, it is recommended to pay attention to the following when selecting a model:

1) Determine the required common flow, and determine the maximum flow by 1.5 to 2.5 times the common flow.
2) Specify the standard of the mounting flange and the form of seal, especially for special installation requirements.
3) When ordering, the user should indicate the medium of the fluid to be tested and give the density of the medium.
4) If you need to measure special media, you can directly recommend the required measuring tube materials in addition to the measuring tube materials provided by the company.

Application Case 1:

Coke Oven Gas Measurement in a Coking Plant (containing oil mist + dust)

Application: The force generated by the coke oven gas impacting a ceramic target plate is converted into a signal by a sensor, which is then converted into a gas flow rate.

We configured a wide flow channel and back-purging interface for the user to prevent oil and dust accumulation from affecting the force on the target plate.

Results: Data error ±0.4%, no blockage for 6 months, recovering 5000 m³/month more coke oven gas than ordinary flow meters.

Application Case 2:

PAC Dosing Measurement in a Wastewater Treatment Plant (containing particles + viscous substances)

Application: The PAC solution impacts an anti-stick target plate, and the force signal is converted into flow rate data.

We customized a Teflon anti-stick coating and a removable target plate for the user, ensuring the medium does not stick to the wall and is easy to clean.

Results: Accurate flow measurement, saving 15% on PAC dosage, resulting in a monthly saving of USD200 in chemical costs.

Technical Support

Our newly developed force-sensitive target flow meter combines novel sensor technology and modern digital technology. This target flow meter features the advantage of having no moving parts, a characteristic not found in traditional target flow meters, orifice plate flow meters, or vortex flow meters. At the same time, it boasts measurement accuracy comparable to positive displacement flow meters.

Sino-Inst is a manufacturer of target flow meters. We offer over 10 types of target flow meters. We have extensive experience in flow measurement and continuously provide flow solutions to our customers. If you have any questions regarding the selection, technology, or applications of target flow meters, please feel free to contact our Sino-Inst sales engineer.

Target Flow Meter - Strong Media Compatibility

A target flow meter is an instrument that measures flow rate by utilizing the pressure difference caused by the fluid passing through a target. Target flow meters are also known as drag force flow meters.

Product SKU: SI-3706 Target Flow Meter

Product Brand: Sino-Inst

Price Valid Until: 2029-09-09

Product In-Stock: InStock

Editor's Rating:
5