Our Unit Converter

The ESI Unit converter allows you to quickly and easily access a conversion tool to work out your preferred unit of pressure measurement wherever you may be. Whether out on-site or in the office.

ESI logo in white

Download the ESI-USB© Software

The ESI-USB© software allows you to connect your ESI transducer to your laptop or PC and be up and running monitoring pressure data within ten minutes. The software auto-updates and is compatible with Windows 8, 10 & 11.


Dual Redundant Subsea Pressure Transmitter

  • Two pressure sensors and electronics for reliable dual redundancy
  • Silicon-on-Sapphire sensor technology for outstanding performance
  • Submersion to 3,000 metres sea level
  • Pressure ranges available to 1,000 bar
  • High accuracy option
  • Hyperbaric testing to 3,300 metres depth
  • Environmental Stress Screening (ESS Testing)


The PR3915 Dual Redundant Subsea pressure transmitter has been designed to meet the requirements of the sub-sea oil industry Valve-Mountable and is configured to mount directly to the industry standard control valve flange arrangement.

The unique Silicon-on-Sapphire sensor technology provides outstanding performance and gives excellent stability over a wide temperature range.

Housed in fully welded body with wetted parts conforming to the NACE recommendation for material corrosion resistance, this product will provide a durable solution for long term accurate pressure measurement even when permanently situated in extreme depth sub-sea environments. The pressure connection is achieved with an 8mm diameter stem with integral dual redundant o-ring seal grooves. Alternative connections are available. The fitting is constructed from Inconel 625 for high chemical resistance.

Units can be supplied with hyperbaric test certificates to 3,000metres water submersion. ESS testing and comprehensive document packages are available.

Standard pressure ranges:

0 – 569 bar; 0 – 759 bar; 0 – 1,035 bar; 0-1,380 bar (other options available)

Typical applications include:

  • Oil & Gas applications
  • Subsea environments
  • Permanent immersion in pressurised dielectric oil


Available options include ATEX and IECEx approved version for explosion protection for flammable gases (zone 0), dusts (zone 20) and mining areas (group I M1) and/or Marine version complying with DNV GL rules for classification of ships, high speed & light craft and DNV GL offshore standards

Get a quote..

For more information or to request a quote contact our sales team