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How to use the flowmeter to achieve quantitative control

How to use the flow meter to achieve quantitative control?

Quantitative control flow meter application: sewage quantitative controller, quantitative water addition, quantitative ingredients, food watering system, cosmetic watering system, quantitative feeding system, chemical liquid batching system, etc.

HPPLC quantitative control / quantitative feeding / automatic feeding / manual operation of the material / flow automatic control device / push-button operation / quantitative canning / replacement of manual canning refers to the addition of a precise measurement of pipe flow A function that automatically interrupts the pipeline when the cumulant amount reaches a certain value.

The program mainly relies on the pulse flow signal fed back to the quantitative controller by the flow meter. When the flow cumulative flow reaches the set value (quantitative value), the quantitative controller will give the electromagnetic valve or pump a switch signal, which has reached the valve and pump. Start and close controls. Automatic and manual control of the feed is achieved. The system has high precision, simple operation and on-site calibration. At present, many companies use or need to improve one of the projects. It has the characteristics of easy operation, easy display, intuitive display, manual control flow or automatic control flow. It is especially suitable for oilfield oil blending, water mixing, dosing, batching, quantitative water injection and quantitative control of various liquids. At present, some companies that still use manual operation of canning/feeding, and do not want to invest too much cost, are advised to adopt this system.

1. Flowmeter: This is the basis of control and directly affects the effect of control. Therefore, the basic requirement is that the higher the measurement accuracy, the better, and the signal output function. At the same time, there are many types of flowmeters, and it is necessary to select the appropriate flowmeter according to the parameters such as measuring medium, pipe diameter and flow range.

2, HPPLC control box: contains all Chinese liquid crystal display quantitative control instrument, internal control lines and components, external control buttons and indicators, etc., the standard size of the box is 400*300*200mm, the power supply is AV220V.

3, cut-off equipment: can be the existing power equipment of the pipeline, such as pumps; it can also be installed after the solenoid valve, electric valve, flow valve.

Second, the control process

After receiving the flow signal of the flowmeter, the quantitative controller completes the flow accumulation inside, and sets the required quantitative control value inside the controller. When the cumulative value displayed by the quantitative controller reaches the set quantitative value When the value is controlled, the quantitative controller outputs a switching signal. At this time, the switching signal is used to control the current interrupting device installed on the pipeline through the matching relay or the contactor, thereby achieving the effect of quantitative control.

Third, product features

1. It only needs flowmeter, control box and current interrupting device, which has simple structure and low cost;

2. The control lines and components in the control box are customized according to the flowmeter and equipment required by the customer. The signal line connection is simple, and generally no adjustment is needed after the scene;

3. The control box panel is equipped with “start”, “stop” and “clear” buttons, and has “status indicator” display, so the display is intuitive, easy to operate, convenient and easy to learn;

4. The quantitative control instrument is a full Chinese liquid crystal display. Each quantitative control value can be arbitrarily changed as needed, and only needs to be completed in the quantitative control device;

Fourth, the main function

1. It has large and small valve control to control large flow and small flow respectively to achieve precise quantitative control;

2. When controlling the pump and the valve at the same time, it has the function of delaying the start of the pump and closing the valve in advance;

3. Equipped with flashing and sputum pump interface, when the flashing or sputum pump is turned off, the material is immediately protected; 4. In the quantitative controller, the total accumulated, instantaneous flow, time, flow meter input signal value, etc. can be viewed and set. There are query functions such as the number of times of feeding, the time of each feeding, the amount of each feeding, the accumulation of days or months;

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