In addition to Husky, YUDO, and Zhejiang Hengdao Technology, domestic brands such as Shenzhen Maishidefu Technology Co., Ltd., Dongguan Haoke Hot Runner System Co., Ltd., and Shenzhen Jiexuan Technology Co., Ltd. also incorporate opto-isolation or magnetic isolation technologies into their high-end hot runner systems. These technologies are applied to thermocouple signal acquisition and communication interfaces to enhance the system's immunity to common-mode interference.
I. Other Representative Brands Utilizing Opto/Signal Isolation Technology
1. Shenzhen Maishidefu Technology Co., Ltd.
Isolation Technology Application: In its multi-zone temperature control systems, the company employs a combination of optocoupler isolation and isolated ADC acquisition modules to electrically isolate thermocouple signals from the main control circuitry, thereby blocking common-mode current paths.
System Advantages: The product line encompasses both standard and customized hot runner systems. Widely applied in the automotive and home appliance sectors, the company possesses extensive experience in ensuring robust field immunity against interference.
Maishidefu Official Website
2. Dongguan Haoke Hot Runner System Co., Ltd.
Isolation Technology Application: As an enterprise dedicated to hot runner systems for over 20 years, its temperature control module designs integrate isolated amplifiers and isolated DC-DC power supplies to effectively suppress common-mode noise introduced by ground loops.
Technical Features: Emphasizes providing a "complete solution" service, addressing signal integrity and EMC compatibility requirements right from the mold design stage.
Haoke Hot Runner
3. Shenzhen Jiexuan Technology Co., Ltd.
Isolation Technology Application: In the design of its hot runner temperature control cabinets, the company utilizes opto-isolated inputs combined with isolated RS485 communication modules. This configuration is well-suited for environments with stringent requirements for cleanliness and stability, such as the electronics and medical industries.
Product Highlights: Offers a one-stop solution ranging from hot nozzles to temperature control systems, with a core focus on "resolving the various challenges and difficulties encountered by customers in their injection molding production."
Jiexuan Technology
II. How to Identify Whether a Brand Utilizes Isolation Technology
Verification Method Specific Procedure
Technical Documentation Review Check the product manual for keywords such as "signal isolation," "optocoupler isolation," or "isolation amplifier."
EMC Certification Information Brands that have passed the IEC 61000-4-4 EFT/B test typically incorporate isolation or filtering designs.
Direct Manufacturer Inquiry Ask: "Does the thermocouple input utilize an isolated acquisition scheme?" or "Is the communication module isolated?"
Recommendation: In environments with high electromagnetic interference (e.g., near variable-frequency drives or welding equipment), prioritize brands that explicitly specify the use of a "triple protection" strategy: isolated acquisition + double-layer shielding + single-point grounding.
