By 2022, Huadian Automation will have a large number of R&D personnel and engineers, and the total number of group employees will exceed 500. With the diversified market needs
In order to serve global customers, Huadian Automation has established and/or is preparing to establish offices in Singapore, Vietnam, Russia, Germany, Philippines, Malaysia, India and other places.
Huadian Automation continuously strives to establish close partnerships with companies around the world, integrating itself into the local innovation system while providing global technology innovation make a contribution.
With a customer-centric approach,Huadian Automation will continue to focus on process automation sensors and instruments and play an indispensable role in supporting the world's industries to become more intelligent and efficient. indispensable role.

Ai-12 series remote analog data acquisition module can be used to collect the signal of current output transmitter, current output sensor and other equipment. It is mainly used for computer room monitoring, industrial control or other distributed data collection.The report interface adopts the general protocol of RS485 communication bus and standard MODBUS-RUT, which can be easily integrated into the third-party application system, and can also be directly adapted to PLC and various configuration software in China.

Product name | data acquisition 4 20ma to modbus rs485 converter analog signal to digital signal |
Key words | rs485 analog input |
Model | HD-AI-12 |
Power supply | 9-32VDC |
Output single | RS485, RS232 |
Input signal | 4-20mA, 1-5V, 0-10V, RS48, Thermal resistance, thermocouple, etc |
Environment temperature | -20~60ºC |
Accuracy | 0.2%F.S |
Number of channels | 4, 6, 8, 12, 32 |
Protocol | Modbus RTU |
Warranty | 5 Years |
Installation | 35mm DIN rail |




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Q: Are you trading company or manufacturer ?
A: We are a manufacturer, committed to producing high accuracy, long-term stability, cost-efficient pressure/ level/ temperature measuring instruments.
Q: What's your quality control system?
A: All of our products are completed with temperature compensation and 48 hours aging test before shipment. And all of our products will be fully pre-inspection by QC departments before shipping to you . We have the certification of ISO,CE we could send the certification test of our company to you.
Q: What is the warranty of your products?
A: 2 years for level transmitter and pressure transmitter series others are 5 years from shipment date, for non-man-made damages.
Q: What is your shipping method?
A: Small orders are delivered with DHL, FedEx, TNT, UPS , EMS. Large orders are recommended to ship by sea.
Q: Do you provide samples ?
A: Yes,we have materials in stock to help you to get the samples as soon as we can.
Q: How long will you give me the reply?
A: We can support you 24Hours online service via email, skype, what'sapp, facebook etc within 1 hour.