Steam specific flowmeter

Steam specific flowmeter

Jiangsu Aoke Instrument Co., Ltd

Sales phone number: Mobile phone:Manager Bai

1Steam specific flowmeterOverview:
AK-LUGB Vortex Flow Meter（Steam specific flowmeter）The basic principle is the Karman vortex street principle, which states that the separation frequency of vortices in the vortex street is proportional to the flow velocity. The diameter of the transmitter's flow body is basically the same as the nominal diameter of the instrument. As shown in Figure 1, there is an approximately isosceles triangle shaped cylinder inserted into the flow body, with its axis perpendicular to the direction of the measured medium flow and its bottom facing the fluid.

▲ On site LCD display, pulse, 4-20mA output or 485 communication, can be connected to industrial automation systems.

IIISteam specific flowmeterTechnical Specifications:

5Compressed air dedicated flowmeterInstallation design requirements for instruments:

The correct installation of instruments is an important part of ensuring their normal operation. If not installed properly, it can affect the accuracy of instrument use, and in severe cases, it can affect the service life of instruments and even damage them.

(1)Steam specific flowmeterInstallation environment requirements:

1. Try to avoid strong electrical equipment, high-frequency equipment, and strong switching power supply equipment as much as possible. The power supply of the instrument should be separated from these devices as much as possible.

2. Avoid direct effects from high-temperature heat sources and radiation sources. If installation is necessary, insulation and ventilation measures must be taken.

3. Avoid high humidity and strong corrosive gas environments. If installation is necessary, ventilation measures must be taken.

4. Vortex flow meters should be avoided from being installed on pipelines with strong vibration as much as possible. If installation is necessary, pipeline fastening devices must be installed at 2D upstream and downstream locations, and anti vibration pads must be added to enhance the anti vibration effect.

5. It is best to install the instrument indoors, and when installing outdoors, attention should be paid to waterproofing. Special attention should be paid to bending the cable into a U-shape at the electrical interface to prevent water from entering the amplifier housing along the cable.

6. There should be ample space around the instrument installation point for wiring installation and regular maintenance.

(II) Steam specific flowmeterInstallation requirements for instrument pipelines：

Steam specific flowmeterThere are certain requirements for the upstream and downstream straight pipe sections of the installation point, otherwise it will affect the flow field of the medium in the pipeline and affect the measurement accuracy of the instrument. The length requirements for the upstream and downstream straight pipe sections of the instrument are shown in Figure (III)

DN is the nominal diameter of the instrument, measured in millimeters

VISteam specific flowmeterDetermination of instrument diameter:

Instrument selection is a very important task in instrument applications,The correctness of instrument selection will directly affect whether the instrument can operate normally.Therefore, when users and design units choose our company's products,Please read this section carefully,Carefully check the process parameters of the fluid and contact our sales or technical support department at any time to ensure correct selection.

Determination of applicable flow range and instrument diameter

The selection of instrument caliber is determined based on the flow range. The measurement range of vortex flowmeter with different calibers is different. Even if the same caliber flowmeter is used for different media, its measurement range is also different. The actual measurable flow range needs to be determined through calculation.

(one) Flow range of air and water under reference conditions

1Gas: ambient temperature and pressure air,t=20℃，P=0.1MPa(Absolute pressure),ρ=1.205 kg/m3，υ=15×10-6 m2/s.

2Liquid: Room temperature water,t=20℃，ρ=998.2kg/m3，υ=1.006×10-6m2/s.

（2） The basic steps for determining the flow range and instrument diameter are:

1Clearly define the following working parameters.

（1）Name and composition of the tested medium

（2）Minimum, common, and maximum flow rates for work status

（3）Minimum, common, and maximum pressure and temperature of the medium

（4）Viscosity of the medium in working condition

Product Inspection Qualification Report for Compressed Air Special Flow Meter:

7： Aoke Instrumentation ProductsAfter-sales service

1. Our company is responsible for free repair of products that have quality problems (not caused by human factors) within one year.
2. If there are any quality problems with our company's products during the warranty period, our company is responsible for free repair or replacement.
3. If the product is damaged due to improper use by the user during the warranty period, our company is responsible for repairing it and charging the cost of the damaged parts.
If the user requires on-site service from our company, we will arrive at the user's site in the shortest possible time.
5. The products sold by our company enjoy lifelong maintenance.

Jiangsu Aoke Instrument Co., Ltd
Contact: Bai Guangming
sale:
Address: Jinhu County Industrial Park, Jiangsu Province