At the beginning of quantitative measurement, the flow quantitative control instrument indicates that the solenoid valve is open and the fluid enters the flow sensor. flow sensor

Send the flow signal to the quantitative integration control instrument and start measuring. When the flow reaches the set value, the quantitative integration control instrument sends out a signal

Disconnect the solenoid valve and restore it to its initial closed state.

1、 Composition of Quantitative Controller System

1. Measurement sensors: can be flow meters installed on pipelines, level gauges on storage tanks, or weighing sensors, etc. This is the basis of control and directly affects the effectiveness of control. Therefore, the basic requirement is that the higher the measurement accuracy of the sensor, the better, and it has signal output function. At the same time, there are many types of measuring sensors, and it is important to choose the appropriate measuring sensor based on the actual working conditions on site. In addition, other technical requirements such as explosion-proof, anti-corrosion, and installation methods should also be considered.

2. Quantitative controller: It includes WK intelligent quantitative controller, internal control circuit and components, external control buttons and indicator lights, etc. The standard size of the device is 400 * 300 * 200mm (height * width * thickness), and the power supply is DC24V or AC220V optional. Both sensors and cutoff devices are directly powered by the controller. And it can output 4-20mA, RS485 and other signals to other control devices, and can also add printing function.

3. Cut off device:

It can be power equipment such as pumps, or equipment such as solenoid valves, electric valves, pneumatic valves, etc. As long as the corresponding power is specified during the selection process, we can customize it accordingly, or we can provide supporting equipment.

2、 Quantitative controller control process:

After receiving the signal from the measuring sensor, the quantitative controller completes the accumulation and display inside, and sets the required quantitative control value inside the controller. When the accumulated value displayed by the quantitative controller reaches the set quantitative control value, the quantitative controller outputs a switch signal. At this point, the switch signal is used to control the flow interruption equipment installed on the pipeline by connecting a relay or contactor, thereby achieving quantitative control.

3、 Quantitative controller product features:

1. It only requires measuring sensors, controllers, and cutoff devices, with a simple structure and low cost;

2. The control circuits and components inside the controller are customized according to the measurement sensors and equipment required by the customer. The signal line connection is simple and generally does not need to be adjusted after arriving at the site. The flow meter and cut-off equipment are all powered by the controller, and only AC220V needs to be provided to the controller;

3. The controller panel is equipped with "start", "stop", and "reset" buttons, as well as a "status indicator light" display, making the display intuitive, the operation simple, convenient, and easy to learn;

4. The quantitative controller is a fully Chinese LCD display, and the quantitative control value can be changed as needed each time, simply by operating within the quantitative controller;

Basic parameters? Explosion proof grade: Exd [ib] ibIIBT6? Degree: ± 1 pulse? Power supply voltage: AC220V or DC24V 1A? Single delivery quantity: 999999? Environmental temperature: -35~60 ℃? 2-channel pulse signal input: pulse voltage 5V, 25V optional, frequency ≤ 30KHz,? 10 channel switch input (expandable): used for valve pump feedback, anti overflow and anti-static switch signals? 8-way relay output (expandable): used for controlling pumps, valves, and other purposes? 2-channel analog signal input (expandable): temperature and density signals? 2-channel analog signal output (expandable): used for frequency converter and regulating valve control? 1 RS485 communication bus: supports Modbus RTU communication? 1-channel Ethernet communication: able to communicate with high-speed Modbus TCP protocol

Other instructions and warnings: When using this instrument, do not exceed the following specified range, otherwise it may cause personal injury or equipment damage.? Temperature: Operating temperature range: -30~65 ℃ Storage temperature range: -40~85 ℃? Humidity: 0-90%? Instrument power supply: AC: 85-264 VAC, DC: 24VDC? Input channel parameters:? Pulse input: Input frequency: 30KHZ? DI signal input: Rated voltage: 30VDC Continuous allowable voltage: 35VDC 0.5s? Relay (DO) output:? AC relay: rated voltage: 250VAC output current 2A? DC relay: rated voltage: 24 VDC output current 0.75A? What is the isolation method for input/output channels? Optoelectronic isolation: Isolation voltage: 500VAC.

The correct use of quantitative delivery controller is a specialized intelligent instrument applied to batch filling control of liquid materials in petrochemical industry. It can be used in conjunction with flow meters, thermometers, spill switches, grounding switches, control valves, pumps, and remote control systems. Various fluids with different properties can be measured and controlled, such as:? Gasoline or diesel? Methanol, ethanol? Improper use or exceeding the normal range of use of instruments such as liquefied gas and fuel oil will not guarantee the safety of instrument operation, and the manufacturer will not be responsible for any damage caused thereby.

First of all, thank you for choosing our company's products. Our company has been committed to developing a series of products for quantitative delivery and will provide products and services; This model of product is at the forefront of the industry in terms of intelligence, networking, ease of use, stability, and control accuracy. The quantitative delivery controller is a precision batch control equipment used in industries such as petroleum, chemical, and food (as shown in the figure on the right). This controller is suitable for batch control systems composed of flow meters (including mass flow meters, volume flow meters, electromagnetic flow meters), control valves (including solenoid valves, multi-stage control valves or regulating valves), and oil spill electrostatic protection devices. It uses advanced PLC control technology to provide flexible programming methods that are easy to master. From the programming menu, select the option that suits your needs and build various functions - complete precise quantitative control of materials; Explosion proof grade: Exd [ib] ibIIBT6, can be installed in hazardous areas containing flammable gases and explosions