On June 28, 2025, the "Second 2025 Forum on High Quality Development of Process Industry Digitalization and Automation Special Technology and Operation and Maintenance Capability Enhancement and Instrument Circle (Shandong) Technical Workstation Work Conference" was successfully held in Zibo, Shandong. This forum brings together over 160 instrument managers and industry experts from major enterprises across the country. We conducted high-level and in-depth discussions on core issues such as green and low-carbon, safety monitoring, domestic substitution, and intelligent operation and maintenance, providing forward-looking and practical ideas for the digital transformation and automation technology upgrading of process industries!

As the main co organizer of this conference, Dinghua Electronics has been deeply involved in the field of automation instruments for many years, and with profound technical accumulation and innovation enthusiasm, has set off a wave of technological innovation on site. The introduction of innovative products such as the energy gathering type external liquid level gauge, SA Gpro integrated external liquid level switch, and intelligent electro-hydraulic actuator sparked a heated discussion throughout the venue with their breakthrough technology and performance, and received high recognition from attending experts and owners!

At this conference, Dinghua Electronics highlighted the energy gathering type external liquid level gauge, which has achieved a major technological breakthrough in addressing the problems of signal attenuation and unstable measurement of traditional external liquid level gauges under complex working conditions!

As shown in the figure below, in the application of VCM single tank in Junzheng, Inner Mongolia, the energy gathering type external level gauge successfully increased the echo signal from 200mV to 10V and reduced the blind spot to 1/10 of traditional level gauges, achieving continuous and stable measurement!

The performance improvement of the energy gathering type external liquid level gauge is not only reflected in signal strength and blind spot control, but its overall design also pays more attention to long-term stability and usability:

The maintenance interval of the probe has been increased to 10-15 years, the debugging time has been reduced by 50%, and the accuracy has reached ± 1mm;

Suitable for complex tank types such as dome roof tanks and floating roof tanks, especially performing well in flammable, explosive, and highly corrosive media scenarios.

The new generation probe adopts self matching magnetic suction technology, which can adapt to the curvature of the tank wall and firmly adhere to the tank wall. Compared with the previous generation product, the magnetic suction has increased by 200%, and the installation stability of the probe has been greatly improved. This means that even in the event of vibration or accidental collision, the probe will not shift or detach, ensuring stable propagation of ultrasonic waves and thus ensuring the accuracy and reliability of measurement results.

In terms of sealing protection, the T25 Ultra also performs well. The front end of the probe adopts a dual sealing structure, which solves the problem of coupling agent failure caused by poor sealing in the past, enabling the probe to resist long-term environmental erosion such as moisture and corrosion, maintain good working condition, and greatly extend the maintenance free cycle of the probe.

The SA Gpro external liquid level switch has attracted the attention of many attendees with its design and excellent performance.

It adopts an integrated structure and undergoes strict overall inspection and testing before leaving the factory. This design not only makes on-site installation simple and easy to use, but also effectively avoids the problem of rainwater from high places being pressed into the transmitter through the pipeline, greatly improving the reliability of the product and greatly improving installation efficiency!

The SA Gpro external liquid level switch uses the technology and algorithm of "micro vibration analysis" and "variable frequency ultrasonic", which can adaptively adjust, eliminate the interference of tank wall attachments, and achieve accurate liquid level alarm in complex environments.

The DHE-EH series intelligent electro-hydraulic actuator is a new type of actuator mainly used for valve opening/closing or opening degree adjustment. It can input/output analog signals (4-20mA), opening/closing signals (dry contacts), etc., and achieve linear or angular displacement through servo control system, high-precision displacement sensor, and hydraulic actuator. It has the characteristics of integrated structure, high torque thrust, high adjustment accuracy, adjustable segmented speed, multiple fault safety, easy operation, fast response speed, emergency cut-off and other functions.

The DHE-EH series electro-hydraulic actuator can be matched with various valves such as disc valves, ball valves, plug valves, air doors, gate valves, globe valves, etc., and is suitable for many fields such as power, metallurgy, petrochemicals, pipelines, ships, docks, urban water treatment, industrial equipment, etc.