ESI Inc has grown into the market leader in pressure measurement over the last 25 years.

We design and manufacture pressure transducers and transmitters for the aerospace, defense, oil & gas, medical, automotive, process and general industrial markets. The customer base extends across the world to more than 30 countries.

Early success was founded on designing transducers and transmitters for exacting military and aerospace applications. More recent success is due to the quality and performance of our Silicon-on-Sapphire sensing technology and its ability to operate at high temperatures, outstripping the performance of conventional silicon pressure sensors.

Our comprehensive range of pressure transmitters and transducers incorporate the superior SOS sensing technology together with the latest digital signal processing. The entire product range is designed and manufactured at the companies factory in Wrexham, UK. All products are rigorously tested to ISO9001:2008 and Mil-I-45208 procedures and conform to CE requirements. Intrinsic safety certification is also available.

In 2010 ESI Inc was acquired by Suco. Suco ( is a leading producer of mechanical pressure and vacuum switches, and electronic pressure switches. Both companies combined make up nearly 80 years of experience in pressure monitoring.


ESI has an extensive range of intrinsically safe transmitters, all ATEX and IECEx approved.

ESI pressure transducers, factory
pressure transducers, pressure sensors, certifications