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.


Submersible Depth & Level Pressure Transmitter

  • Piezoresistive sensor technology for excellent stability and repeatability
  • Robust stainless steel construction
  • Pressure ranges available from 0-1 mWG
  • High strength, moulded cable for protection against ingress
  • ATEX/IECEx option available (includes M1 for mining applications)
  • DNV GL Approved


The PR3441 submersible transmitter has been designed for the accurate measurement of the depth and level of liquids in many applications.

Electrical connection is via a high strength moulded polyurethane cable with integral tube for excellent trouble-free venting to the surface atmosphere. The standard depth transmitter is fitted with a stainless steel nose cone with radial inlet holes to prevent sludge build-up.

The PR3441 transmitter is suitable for depth and level measurement in boreholes 25 mm diameter or greater. Lightening Protection is available on request.

Standard pressure ranges:

0-1 mWG; 0-10 mWG; 0-20 mWG; 0-50 mWG; 0-100 mWG; 0-250 mWG; 0-500 mWG (other options available)

Typical applications include:

  • Borehole level and reservoir level monitoring
  • Water mains pressure measurement in inspection chambers
  • Power level and outlet pressure measurement on submersible pumps.

Technical Specifications

Electrical Connections

Wire mA
Red +supply
Blue 4-20 mA signal
Screen to case


Get a quote..

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