Leutert DPI - User Manual

Digital Pressure Indicator DPI
Operating Instructions
Cylinder pressure monitoring
The DPI Digital Pressure Indicator measures dynamic pressures. It is
designed to analyze the internal combustion curve of large two and
four stroke diesel engines. The measurement is performed via an
indicator valve.

Leutert DPI Specifications

General

Brand	Leutert
Model	DPI
Category	Measuring Instruments
Language	English

Summary

General Information

Explanation of Symbols

Defines warning symbols like DANGER, WARNING, CAUTION, and NOTICE for safe operation.

Safety Instructions

DANGER and WARNING Notices

Highlights immediate dangers and hazardous situations requiring utmost caution during operation.

Important Notices and Precautions

Covers essential precautions for device protection, operation, and battery handling.

Product Description

Application and Function

Details the DPI's purpose for analyzing combustion processes in large diesel engines.

Handheld Device Overview

Illustrates and labels the components and LED indicators of the DPI handheld unit.

Handheld Device Technical Data

Lists technical specifications such as storage capacity, interface, power, and dimensions.

Pressure Sensor Details

Covers the pressure sensor's construction, connection, and technical specifications.

DPI Software Features

Explains the DPI software's capabilities for data analysis, visualization, and device configuration.

PC System Requirements

Lists the hardware and software specifications for the PC to run the DPI software.

System Preparation and Setup

Software Installation

Guides through the process of installing the DPI software on a Windows PC.

Handheld Device Configuration

Details inputting engine parameters and transferring them to the DPI handheld unit.

Setting Device Date and Time

Guides users on synchronizing the date and time between the PC and the DPI handheld device.

Performing Engine Measurements

Measurement Setup and Sensor Connection

Covers safety, sensor connection, and preparation steps before taking engine measurements.

Analyzing Measurement Results

Transferring Data to PC

Details the process of transferring recorded measurement data from the DPI handheld to a PC.

Pressure Plot Analysis

Describes the Pressure Plot mode, showing cylinder pressure against crankshaft angle.

TDC Correction for Performance

Details the TDC Correction mode for determining top dead center for performance calculations.

PV Plot Analysis

Explains the PV Plot mode, illustrating cylinder pressure relative to volume.

Bar Graph Comparison

Describes the Bar Graph mode for comparing individual cylinder measurements.

Data Info Table

Presents a table of measurement data for each cylinder with definitions of key parameters.

Raw Data Visualization

Details the Raw Data display mode, showing measured values over time.

Sending Data via Email

Explains how to use the DPI software to send measurement data records electronically via email.

Data Management on Handheld Device

Viewing Recorded Data

Guides users on how to access and view recorded measurements directly on the DPI handheld device.

Deleting Data Records

Provides instructions on how to delete measurement data from the DPI handheld device.

Maintenance and Care

Pressure Sensor Maintenance

Covers general maintenance of the DPI device and the pressure sensor, including calibration.

Cleaning the Pressure Sensor

Details the procedure for cleaning soot and carbon deposits from the pressure sensor.

Charging Handheld Batteries

Explains how to charge the batteries of the DPI handheld device via USB.

Changing Batteries

Provides instructions for replacing the batteries in the DPI handheld device.

Adjusting Display Settings

Guides users on how to adjust the display's contrast and backlight settings on the handheld device.