CASE
Performance Case
Factory Service Water Distribution System

PLC program controls wastewater automatic regeneration resin tower

It requires a combination of complex systems and filtration to produce usable industrial pure water. Through PLC logic program control, Longzhong engineers can automatically adjust the 2B3T resin tower according to the regeneration program conditions preset by factory personnel, providing more convenience for the 2B3T system regeneration process.
Instrumentation control system

Ultrasonic flowmeter additional instrument and electrical control project

Longzhong selected ultrasonic flowmeters for customers' wastewater system plants, which can achieve stable and accurate measurement without contact with fluids, and can integrate and collect information, allowing plant personnel to conveniently manage the water flow in the entire area. .
Factory Service Air Conditioning System

Clean room intelligent air conditioning constant temperature and humidity energy saving system control

For clean room air conditioning systems, temperature and humidity control is a very important link. Longzhong achieves intelligent constant temperature and humidity control of the clean room air-conditioning box through PLC programming, so that your clean room can maintain the clean room temperature and humidity in the most energy-saving way and at the lowest cost.
Factory Service Water Distribution System

PLC Automatic Judgment Recycling Wastewater Recovery System

The PLC automatically judges the regenerated wastewater recovery system. In addition to filtering the regenerated water quality, it can also automatically record the daily usage of regenerated water in the factory area, and automatically control it in conjunction with the valves of the sluice line. Not only can the customer's plant easily manage the water quality of recycled water, but it can also more comprehensively grasp the water status of recycled wastewater in the plant.
Graphic Control Systems

Map control alarm monitoring of adsorption dryer tank tank differential pressure gauge project

Use the PLC program to automatically control the measurement of the differential pressure gauge in the tank of the adsorption dryer, and send back the measured pressure difference data of the tank to the graphic control interface for monitoring. Comprehensive control of production expenditure costs.
Factory Service Water Distribution System

AI intelligent dosing wastewater treatment system saves water resources for enterprises

The customer hopes to make the factory area more automated through the AI ​​intelligent dosing wastewater treatment system. In addition to shortening the wastewater regeneration treatment time, optimizing the process of the overall wastewater treatment system, and hoping to save water resources for the enterprise.
Factory Service Air Conditioning System

Clean room engineering wiring modification design planning

The customer's clean room has been renovated. In order to adapt to the configuration of the new factory area, the original internal control system lines need to be modified. At the same time, Longzhong will also add the required functions according to the needs of the customer.
Factory Service Water Distribution System

Industrial pure water system instrument control improvement project

Many products need to use a large amount of pure water in the process. The circuit is modified through PLC control, and a switching system that can automatically detect water quality is added. Through the input pH value interval, the system can determine that the water in the return pipe should be discharged to the 2B3T system for regeneration. , or to be discharged as waste water.
Factory Service Facility GAS/Chemical System

Improvement of PLC signal of gas detector in anaerobic zone

According to the layout of the new detector, Longzhong's engineers re-planned and designed the transmission line and optimized the signal return function of the gas detector.
Switch to Siemens S7-1500 PLC to connect MODBUS TCP network backhaul, and use Ethernet network communication to make its network topology more flexible.
Graphic Control Systems

Storage tank diesel leakage sensing alarm project

Longzhong designed a storage tank diesel leakage sensing alarm project for customers. Even non-conductive liquids such as oil or organic solutions can receive the occurrence of leakage through PLC and control subsequent graphic alarm functions. . This allows owners to understand the situation more quickly and conduct timely repairs to reduce the chance of damage expansion.
Graphic Control Systems

Air compressor remote system data automatic integration and graphic control

Manual data copying is not only time-consuming, but may also contain errors. Longzhong plans to automate the integration of remote system data. Through the graphic control screen, factory staff can remotely control the status of your machinery, automatically record all instrument data, and integrate remotely!
Instrumentation control system

DeNOx system unit piping

In this case of the DeNOx system device piping case, the control panel visible on the graphic control is assembled to the information circuit to integrate the hardware engineering, to the subsequent piping circuit, connection to the PLC programmable logic controller, etc. It can be done for the customer, so the customer can hand over the project to Longzhong with confidence.
Industrial Exhaust System

Automatic control TO direct-fired incinerator

The customer entrusted in this case, the waste gas to be treated in the factory is corrosive. Not only that, the waste gas will combine with the air to form hydrochloric acid at high temperature, so a TO direct-fired incinerator must be used. The owner hopes that Longzhong can assist in automating the exhaust process of the TO direct-fired incinerator.
Human Machine Interface

HMI project upgrade and update

If the HMI has not been upgraded and updated for many years, the HMI project that caused the difference of the operating system version needs to be converted before it can be executed. In order to avoid this situation, Longzhong engineers carefully transferred the human-machine program, and assisted in re-editing the wrong objects and adjusting the screen after the upgrade of the human-machine project.
PLC Design Solutions

PLC control FFU clean room automatic monitoring system

In response to the control requirements of the owner's new factory area, the newly established clean room requires FFU automatic monitoring and alarm functions. Longzhong wrote a PLC program so that the PLC can be connected with the FFU controller, and the control loop can be connected in series, and then use the graphic control software to connect the PLC to capture and return the status to achieve automatic monitoring.
Factory Service Facility GAS/Chemical System

The laboratory automatically detects gas leaks in series with Line to send automatic notifications

In response to this demand for automatic gas leak detection, Longzhong not only helps customers install sensors in the laboratory, but also uses the LINE community software to send and set up a LINE Token API, which can automatically detect gas leaks when the sensor automatically detects gas leaks. Notify administrators via LINE automatic message!
Industrial Exhaust System

Electric damper repair

The electric damper used in the dust collecting windmill system in the customer's factory continued to emit abnormal noise during operation, and the pressure and flow were always in an unstable state. The owner directly placed an order for a new electric damper, and planned to ask Longzhong to help them replace the entire set of old dampers.
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