A Dive into ESI Technology’s Digital Pressure Transducers: Meet the GD4200-USB & RS-485 Compatible Ranges

In an era where digital precision and connectivity drive industrial performance, ESI Technology stands out with its cutting-edge digital pressure transducers. Among the most versatile of its line-up are the GD4200-USB and the RS-485 compatible ranges — both offering exceptional performance and seamless integration into modern systems.

GD4200-USB: Plug, Measure, Analyse

Built with Silicon-on-Sapphire (SoS) sensor technology, the GD4200-USB offers sturdy durability, superb corrosion resistance, virtually no hysteresis, and long-term stability across broad temperature ranges. Users benefit from high-resolution readings (greater than 1 in 10,000), selectable sample rates up to 1,000 Hz, and a wide accuracy of ±0.15 % BFSL (Non-Linearity, Hysteresis & Repeatability).

Capable of handling pressure ranges from vacuum up to 5,000 bar, the GD4200-USB suits a wide array of environments — from lab testing and leak detection to aerospace and general industrial use. Further enhancing its utility, the ESI-USB software supports monitoring of up to 16 pressure inputs simultaneously, offers automatic temperature compensation, custom certificate generation, and integration with C#, VB, LabView, and Excel VBA via API DLL.

RS-485 Products: Reliable Long-Distance Connectivity

In scenarios where remote monitoring is essential — perhaps in harsh industrial plantrooms or long-distance installations — ESI’s RS-485 pressure transmitters deliver. The GS4400 series, for example, utilise RS-485 serial communications with proprietary protocols, supporting up to 32 transmitters on a single bus.

These RS-485 models uphold the same SoS sensor advantages — resilience, corrosion resistance, long-term stability, and wide temperature performance — making them ideal for hydraulic systems, refrigeration, compressors, HVAC, aerospace and medical applications. Crucially, RS-485’s capability to transmit data over 500 to 1,000 metres ensures that logging PCs remain in safe, controlled environments — monitoring without exposure.

Why Choose ESI’s Digital Transmitters?

• Robust Sensor Technology: The Silicon-on-Sapphire design ensures both precision and durability under stress.
• Flexible Connectivity: Choose USB for direct PC interfacing or RS-485 for distributed, long-run monitoring.
• Wide Pressure Range: With coverage from vacuum to 5,000 bar, the range fits diverse industrial needs.
• Powerful, User-Friendly Software: The ESI-USB software excels in usability — multi-input logging, auto-updates, custom certificates, VB/C#/LabView/API support.
• Adaptable Fit: Whether for R&D labs or rugged industrial settings, ESI’s digital transmitters deliver accuracy, reliability, and ease.