IMES electronic pressure indicators are designed as compact and lightweight handheld devices for diesel-  and gas engines. They are easy to use and convince with their accuracy and their sophisticated analysing software.
IMES offers five indicator types:
  • EPM-XP
  • EPM-XP plus
  • EPM-XP plus vibro
  • EPM-Peak
  • EPM-XG plus


The battery powered, hand-held EPM-XP Electronic Indicator EPM-XP is designed for periodic monitoring of cylinder pressures on large diesel, gas and dual-fuel engines. It provides important measurement data for engine diagnostics and condition monitoring directly at the point of use.

EPM-XP gives immediate read-outs for peak pressure (Pmax) and (Pcomp) from a number of pressure cycles per cylinder.

The acquired data can then be downloaded to a computer where the IMES visualisation and evaluation software is used to calculate IMEP and IPOWER including p/v diagrams. The EPM-XP electronic cylinder pressure indicator is designed for use on 2-stroke engines in the speed range 40 – 300 rpm and 4-stroke engines in the speed range 200 to 1500 rpm.


The user-friendly engine analyser EPM-XPplus is a further development of the electronic indicator EPM-XP for advanced combustion pressure measurements.
EPM-XPplus offers the same functions like the electronic indicator plus advanced features to enable an optimised engine performance:
  • Higher battery capacity for more 20 operating hours
  • Continuous measurement to analyse actual engine condition by direct data transfer via USB/Ethernet to PC software
  • Comprehensive analysing software for ships and powerplant application
  • Direct data transfer to IPE (IMES performance evaluation software)
  • vibration sensor for definition of fuel injection timing and valves timing (optional)
All measured data can be downloaded via USB port to a PC where the               EPM-XPplus visualisation software is installed.


 EPM-Peak is a part of the successful EPM family. As well as our EPM-XP, more than 2,500 units sold, EPM-Peak is a lightweight, battery powered hand held portable device, designed to measure the maximum value of cylinder pressure on 4-stroke diesel engines.

The cylinder pressure will be measured with the EMP-Peak unit including our high temperature cylinder pressure sensor HTT with Thompson adaptor at indicator cock on 4-stroke marine diesel engines.

The EPM-Peak collects 10 consecutive pressure measurements (cycles) and calculates peak pressure and engine speed. The measured data are displayed in numerical format on the LCD screen and stored in memory.

In comparison to conventional mechanical peak pressure meter the EPM-Peak offers an easy handling, the measurements have a higher accuracy, the data Pmax and speed will be displayed exactly on the LCD screen and up to 200 measurements can be stored. It is not necessary to list the measurements directly.

We are pleased to offer EPM-Peak to an excellent price/performance ratio which means to a lower price than the mechanical device.

Optional we also offer a visualisation software to show the Pmax data on PC.


EPM-XGplus is designed as a compact, lightweight and affordable handheld device, specially tailored to periodic cylinder pressure monitoring and output balancing on the types of gas engines found in North American natural gas pipeline compressor stations. It employs technology well proven on diesel and gas engines in marine propulsion and power generation applications, adapted to two-stroke gas engines with rated speeds from 40 to 500 rpm and four-stroke gas engines with rated speeds from 200 to 1500 rpm.

The EPM-XGplus device offers the accuracy and ease-of-use typical of electronic measuring technology from IMES, plus a scope-of-supply that includes sophisticated analysis software.

As well as immediate readouts of peak cylinder pressure on the EPM-XGplus display, customers can download recorded data to PC running software specially designed by IMES and Morris Control Systems for visualization, analysis and storing of data. Special features include compiling 50-cycle peak pressure histories for each engine cylinder, as well as peak pressure and balancing charts, and the ability to generate engine balance reports in Excel or PDF formats.