High-performance HART to RS485 and Modbus solutions for modern industrial ecosystems.
In the rapidly evolving landscape of Industrial Internet of Things (IIoT), the transition from traditional analog instrumentation to high-fidelity digital data streams is no longer optional—it is a competitive necessity. The Multi-Channel HART Converter stands as the bridge between legacy 4-20mA field instruments and advanced PLC/SCADA systems.
Global industrial hubs, from the chemical corridors of Germany to the oil fields of the Middle East, are increasingly adopting multi-drop HART configurations. This technology allows for the simultaneous monitoring of multiple variables (pressure, temperature, flow, and diagnostics) over a single pair of wires, significantly reducing CAPEX on wiring and OPEX on maintenance.
China, as a manufacturing powerhouse, has emerged as a global leader in providing robust, cost-effective, and high-precision HART converters. Companies like Songmao Electronics have pioneered the integration of AI-driven diagnostics into these converters, enabling predictive maintenance before a hardware failure occurs.
Standard HART modems converting FSK signals to RS232. Limited to one-on-one device communication.
8 to 32-channel data acquisition modules with Modbus TCP/IP and 4G/5G remote transmission capabilities. Integrated web servers for real-time monitoring.
Integration of Edge Computing. Converters will process data locally, identifying anomalies using machine learning before sending refined insights to the cloud.
Established in 2007, Jiaxing Songmao Electronics Co., Ltd. has dedicated nearly two decades to the perfection of HART protocol communication. Our commitment to E-E-A-T (Experience, Expertise, Authoritativeness, and Trustworthiness) is reflected in our 18+ years of strict quality control and global footprint across 40+ countries.
Our R&D team continuously pushes the boundaries of signal integrity, ensuring that our converters operate flawlessly in high-EMI (Electromagnetic Interference) environments commonly found in heavy industrial sectors.
Tailored solutions for diverse industrial vertical markets.
Real-time pressure monitoring and remote valve control in hazardous offshore platforms using HART-to-Ethernet gateways.
Utilizing GPRS/4G multi-channel collectors to transmit flow data from remote city gates to central management hubs.
Integrating chemical dosing sensors with Modbus RTU networks to automate water purification processes and quality assurance.
Standard 4-20mA signals only transmit the Primary Variable (PV). However, most modern HART instruments measure much more. A Multi-Channel HART Converter can extract the Secondary (SV), Tertiary (TV), and Quaternary Variables (QV). For a flow meter, this means getting flow rate, temperature, totalized flow, and device health status through a single channel.
This "Information Gain" is critical for Digital Twin modeling. By capturing these variables, our SM series converters provide the raw data necessary for creating accurate digital replicas of physical assets, allowing for simulation and optimization in a virtual environment before making real-world adjustments.
Our converters also solve the "Common Ground" issue. In many industrial sites, ground loops can distort sensitive analog signals. Songmao's converters feature Galvanic Isolation, protecting the expensive control system from field-side electrical surges and noise.
Our high-end models, such as the SM100-M32, can support up to 32 HART instruments in a single network, providing a consolidated Modbus or Ethernet output for easy PLC integration.
Yes, all Songmao HART converters are designed to support both point-to-point and multidrop modes. In multidrop mode, the 4-20mA current is fixed, and all data is communicated digitally via the HART protocol.
Our SM626H series utilizes encrypted transmission protocols and supports private APNs to ensure that sensitive industrial data remains protected during remote transmission.
Absolutely. The HART protocol is a global standard. Our converters are fully compliant with the HART Foundation standards, ensuring 100% compatibility with any HART-enabled device worldwide.
Precision-engineered modules for every industrial communication requirement.
MODBUS TCP is a widely used serial communication protocol in industrial environments, often used to connect a supervisory computer with a remote terminal unit (RTU) in SCADA systems.
RS485 allows for long-distance communication (up to 1200 meters) and high noise immunity, making it ideal for connecting field HART sensors to a control room PLC.
Remote transmission allows for monitoring of assets in inaccessible areas. Our collectors provide a reliable link between the field and the central office via cellular networks.
