Plug-and-play pressure data is fast and flexible 


ESI Technology takes a closer look at why it believes its award-winning GD4200-USB is quickly becoming industry’s leading choice for digital pressure measurement solutions.

The plug-and-play nature of the GD4200-USB digital pressure transducer allows users to be up and running viewing live pressure data within ten minutes. The ESI-USB software is available for direct download from ESI’s website and is programmed to recognise the transducer by its serial number.

Whether users are looking to perform test and calibration, spot checks or local, direct monitoring, the GD4200-USB is the convenient solution. With no need for any additional hardware or software, users can test and record data on site and easily disconnect and move where and when needed.

SOS sensor technology

As with a large part of ESI’s portfolio, Silicon-on-Sapphire (SOS) sensor technology is incorporated into the manufacture of the GD4200-USB. SOS is incredibly stable and exhibits virtually no hysteresis. With outstanding insulation properties, the sensor is protected from electromagnetic pulse radiation, which allows it to operate over a very wide temperature range without loss of performance.

The advantages of the sensor and its SOS technology include a welded Titanium pressure diaphragm requiring no O-ring seals, high accuracy, a high resistance to over-pressure and pressure transients, and excellent chemical resistance. The technology is stable at elevated temperatures, has a high sensitivity of 10 to 20mV/V and can measure pressures from -1 to 5000 bar. The sensor is constructed using machined titanium parts, while the high pressure HP range is machined from a single piece of Titanium.

The GD4200-USB is available in nine pressure ranges, carefully selected to enable the user to cover any pressure that the application requires, from vacuum up to 5,000 bar.

High speed and accuracy

The GD4200-USB boasts a standard accuracy of 0.15%, making it the ideal solution for high-accuracy applications. The temperature co-efficiency is excellent, so no matter the temperature (Ambient: -20 to +85°C, Media: -50 to +125°C), users can rely on the data that the sensor provides. The sample rate enables dynamic pressures to be measured with up to 21-bit resolution at user-selectable speeds up to 1,000 Hz.

Data logging can be expensive; however, the GD4200-USB transducer is an extremely cost-effective solution for monitoring and recording pressure data with no need for costly I/O interface boards.

But what really makes this product stand out is the ESI-USB software. Freely downloadable from ESI’s website, the software includes features such as easy leak-testing, temperature analysis, and auto-updating.

Customised reports 

Using the ESI-USB software, users can create and save templates of personally branded test certificates and reports. These can be set up with user-defined parameters, ensuring only the data that’s most important is presented, using the user’s company branding where required.

Measure 16 Inputs at Once

Through the use of a USB hub, users can detect up to 16 independent pressure sources at any one time, each identifiable by the unique transducer serial number. Of course, these can be easily renamed within the software to allow the user to recognise pressure data sources.

ESI’s technical sales team is trained to know just about all there is to know about our ESI-USB. The team is actively involved in the development schedule of the software and is happy to help guide users through any questions they might have. On-site or team training on the products can also be offered to give first-hand knowledge and experience with the technology.



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