IMES EPM-XPplus User manual

Operation Manual EPM-XPplus
Software Release 1.2.4.0 25.03.2020
Page 1 of 66
Original operating instruction
Electronic Analyser

Operation Manual EPM-XPplus
Software Release 1.2.4.0 25.03.2020
Page 2 of 66
Revision History
Version Brief Description of Changes Date of Issue
1 EPM-XPplus First version 05-August-2019
1.1.0.0 New functions: Trending, Save reference files, Optimisation of
Pcomp calculation 11-October-2019
1.2.2.0
New functions: Time indication of loading data set from hard disc,
Indication of stored ASCII file on hard disc, Indication of reference
curve, direct data transfer to IPE software, small bug fix solved.
New firmware release: 1.36
16-December 2019
1.2.2.0 New firmware release: 1.38 14. January 2020
1.2.3.0 New functions: p/volume (log) diagram, new optimizing function,
small bug fixed solved 06. March 2020
1.2.4.0
Correction of rounding error of older measurements
Bug fix temperature indication of measuring cell solved
Selection of *.csv format for export as “default value” or old format
“EPM-XP”
25.March 2020

Operation Manual EPM-XPplus
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Imprint
IMES GmbH may be contacted via the following:
Mailing address:
IMES GmbH
Dr.-Herbert-Kittel-Straße 2
87600 Kaufbeuren – Germany
Telephone and e-Mail:
Sales: [email protected]
General Information: [email protected]e
Phone: [phone]
Fax: [phone]
For further information about other IMES products, please visit our website: www.imes.de
Copyright
Copyright © 2018 IMES GmbH. All rights reserved. All data is for information only and not guaranteed for
legal purposes. Information has been carefully checked, however, no responsibility is assumed for inaccuracies.
This manual may not be copied, translated, changed, reproduced or distributed without the written consent of
IMES GmbH.

Operation Manual EPM-XPplus
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List of figures ______________________________________________________________ 5
1 Important information __________________________________________________ 9
1.1 Use of the operator manual__________________________________________________9
1.2 Copyright ________________________________________________________________9
1.3 Warning Notices___________________________________________________________9
1.4 Address of the manufacturer _______________________________________________10
1.5 Obligations of the operator _________________________________________________11
2 Safety _______________________________________________________________ 11
2.1 Intended use _____________________________________________________________11
2.2 Personnel requirements____________________________________________________12
2.3 Safety notes______________________________________________________________12
3 Transportation and packaging ___________________________________________ 12
3.1 Safety notes for transportation______________________________________________12
3.2 Scope of delivery _________________________________________________________13
3.3 Packaging _______________________________________________________________13
4 Technical data________________________________________________________ 13
4.1 Dimensions and weight of instrument case ____________________________________13
4.2 Other parameters_________________________________________________________13
5 Scope of supply _______________________________________________________ 14
6 Description __________________________________________________________ 14
6.1 Introduction _____________________________________________________________14
6.2 Measure functions ________________________________________________________15
6.3 Functional description_____________________________________________________15
7 Operation____________________________________________________________ 15
7.1 Operator push buttons ____________________________________________________15
7.2 Operating functions _______________________________________________________16
7.3 Install rechargeable batteries _______________________________________________17
7.3.1 Install batteries to correct pole.____________________________________________________18
7.3.2 Confirm installed battery type ____________________________________________________18
7.4 Charge battery ___________________________________________________________19
7.5 Measurements with EPM-XPplus _____________________________________________19
8 Installation of visualisation- and USB driver software________________________ 21
9 Visualisation software release 1.2.4.0 _____________________________________ 24
9.1 Screen page “File” Start up Window _________________________________________24
9.2 Download measured data to PC _____________________________________________25
9.1 Visualisation of measured data on PC ________________________________________27
9.1.1 P/alpha diagram _______________________________________________________________27
9.1.2 P/volume diagram______________________________________________________________28

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9.1.3 P/volume (log) ________________________________________________________________29
9.1.4 Open saved data _______________________________________________________________29
9.1.5 Balance diagrams ______________________________________________________________30
9.1.6 Engine report _________________________________________________________________31
9.1.7 Trending _____________________________________________________________________31
9.1.8 Save to ASCII format ___________________________________________________________33
9.1.9 Change “Engine settings”________________________________________________________34
9.1.10 Solver configuration ____________________________________________________________34
9.1.11 Optimize TDC calculation _______________________________________________________35
9.1.12 Save as reference file ___________________________________________________________36
9.1.13 Open a reference file____________________________________________________________36
9.1.14 Delete measurements on EPM-XPplus _______________________________________________37
9.1 Online measurements on engines with EPM-XPplus _____________________________38
9.1.1 Preparation of EPM-XPplus for online measurements on 2-stroke engines__________________38
9.1.2 Preparation of EPM-XPplus for online measurements on 4-stroke engines__________________39
9.1.3 Preparation of EPM-XPplus for online measurements via Ethernet cable ___________________41
9.1.4 Screen page “File” _____________________________________________________________42
9.1.5 Screen page “Online” ___________________________________________________________43
9.1.6 Screen page “Offline”___________________________________________________________48
9.2 Update firmware to EPM-XPplus from visualisation software _____________________52
9.2.1 Check actual firmware version ____________________________________________________52
10 Accuracy check _______________________________________________________ 53
10.1 Check on pressure calibrator _______________________________________________54
10.1 Example of static pressure indication ________________________________________56
11 Cleaning ____________________________________________________________ 57
11.1 Periodically cleaning ______________________________________________________57
11.2 Cleaning in case of hard deposit _____________________________________________57
11.3 Cleaning procedure of adaptor______________________________________________58
11.4 Cleaning procedure of cylinder pressure sensor _______________________________58
12 Basic check for fault finding ____________________________________________ 59
13 Nomenclature ________________________________________________________ 59
14 Option ______________________________________________________________ 60
14.1 IMES IPE Performance evaluation software __________________________________60
14.2 Ethernet cable 20m _______________________________________________________61
14.3 USB Extender for connection to Ethernet cable ________________________________62
14.4 Thompson adaptor for 4-stroke continuous online measurement__________________63
14.5 Pressure pump coupling for Thompson adaptor _______________________________64
14.6 Thread cleaner for Thompson thread ________________________________________65
15 EU Declaration of Conformity ___________________________________________ 66
List of figures
Figure 1: EPM-XPplus incl.all components in instrument case................................................14
Figure 2: Push buttons .........................................................................................................15
Figure 3: 4 pcs. re-chargeable battery in the transport case .................................................17
Figure 4: Back side of EPM-XP incl. protection cover Figure 5: Battery case ...................17

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Figure 6: Battery holder........................................................................................................18
Figure 7: 4 x NiMh AAA 930 mAh installed on battery holder...............................................18
Figure 8: Selection of installed battery type ..........................................................................18
Figure 9: Indication during charging process .......................................................................19
Figure 10: Indication charging process completed................................................................19
Figure 11: Indicator cock Figure 12: Adaptor installed on indicator cock .................19
Figure 13: Indication of 2-stroke mode Figure 14: Indication of 4-stroke mode...............19
Figure 15: Warming up sensor Figure 16: Indication during measurement.....................20
Figure 17: Indication of measurement results on display for 3s ............................................20
Figure 18: Indication over temperature on measuring cell of sensor.....................................20
Figure 19: Dialog of installation ............................................................................................21
Figure 20: Select Destination Location .................................................................................21
Figure 21: Start Menu Folder................................................................................................22
Figure 22: Select additional tasks.........................................................................................22
Figure 23: Ready to install....................................................................................................22
Figure 24: Ready to install....................................................................................................23
Figure 25: Installation completed..........................................................................................23
Figure 26: EPM- XPplus connected via USB cable to PC .......................................................24
Figure 27: Start up window of EPM-XPplus ............................................................................24
Figure 28: EPM-XPplus unit connected to visualisation software ............................................25
Figure 29: Selection of engine configuration.........................................................................25
Figure 30: Entering of specific engine data...........................................................................25
Figure 31: Selection of directory on hard disc of PC for saving data.....................................26
Figure 32: Downloading and optimization process of measured data ...................................26
Figure 33: p/alpha diagram...................................................................................................27
Figure 34: Functions of p/alpha diagram ..............................................................................27
Figure 35: Cursor line functions of p/alpha diagram..............................................................28
Figure 36: p/volume diagram................................................................................................28
Figure 37: p/volume (log) diagram........................................................................................29
Figure 38: Button “Open”......................................................................................................29
Figure 39: Stored measurement file......................................................................................29
Figure 40: Information about cylinder during uploading process...........................................30
Figure 41: Balance diagram .................................................................................................30
Figure 42: Engine report diagram .........................................................................................31
Figure 43: Overview of bush puttons ....................................................................................31
Figure 44: Selection criteria for measurement files ...............................................................31
Figure 45: Selection of measurement files............................................................................32
Figure 46: Selection criteria for values and cylinder..............................................................32
Figure 47: Display of trending function .................................................................................33
Figure 48: Tools ...................................................................................................................33
Figure 49: CSV.....................................................................................................................33
Figure 50: CSV file selection ................................................................................................33
Figure 51: Selection field ......................................................................................................34
Figure 52: “Engine settings” .................................................................................................34
Figure 53: “Motor data”.........................................................................................................34
Figure 54: “Options” .............................................................................................................34
Figure 55: “Options” .............................................................................................................34
Figure 56: Cylinder pressure curve incl. motored curve........................................................35
Figure 57: Shifted Cylinder pressure curve incl. motored curve............................................35
Figure 58: Button “Save REF” ..............................................................................................36
Figure 59: Save the reference on hard disc of PC ................................................................36
Figure 60: Button “Open REF”..............................................................................................36
Figure 61: Selection of reference curve on hard disc of PC ..................................................36
Figure 62: Display of selected reference curve in comparison to a cylinder curve ................37

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Figure 63: Close reference curve .........................................................................................37
Figure 64: Button “Del.Meas”................................................................................................37
Figure 65: Indicator cock Figure 66: Adaptor installed on indicator cock ..............38
Figure 67: EPM-XPplus connected to notebook ....................................................................38
Figure 68: Disconnection of spring Figure 69: Disconnection of sensor from adaptor ...39
Figure 70: Connection of HTT-04 sensor on special cooling adaptor....................................39
Figure 71: Indicator cock Figure 72: Adaptor installed on indicator cock ...............40
Figure 73: EPM-XPplus connected via USB cable to notebook.............................................40
Figure 74: Overview of online measurement with EPM-XPplus...............................................41
Figure 75: Overview of Ethernet connection to EPM-XPplus ..................................................41
Figure 76: Indication on display for successful connection to PC..........................................42
Figure 77: Start up window of EPM-XPplus ............................................................................42
Figure 78: EPM-XPplus unit connected to visualisation software ............................................43
Figure 79: Indication of online pressure curve ......................................................................43
Figure 80: Online pressure curve manual shifted by arrow function......................................44
Figure 81: Example for over temperature on measuring cell of sensor .................................44
Figure 82: Button “Pressure curve save” ..............................................................................45
Figure 83: Register for saving the file ...................................................................................45
Figure 84: Indication of online pressure curve during saving process...................................46
Figure 85: Button “Working cycle save” ................................................................................46
Figure 86: Register for saving the file ...................................................................................46
Figure 87: Indication of online Pmax data.............................................................................47
Figure 88: Indication of Pmax data during recording process ...............................................47
Figure 89: Example for over temperature on measuring cell of sensor .................................48
Figure 90: Screen page “Offline” ..........................................................................................48
Figure 91: Button “100 Pressure curve open”.......................................................................49
Figure 92: Register of saved file ...........................................................................................49
Figure 93: Indication of pressure cycles ..............................................................................49
Figure 94: Button “Working cycle open”................................................................................50
Figure 95: Screen page “working cycle offline” .....................................................................50
Figure 96: Register of saved working cycle data file .............................................................50
Figure 97: Selection of saved Pmax working cycle ...............................................................51
Figure 98: Indication of selected Pmax data.........................................................................51
Figure 99: Button “Connect” Figure 100: Selection “Tools” ...............................................52
Figure 101: Selection “Firmware” Figure 102: Load-and update firmware .............52
Figure 103: Indication of main menu.....................................................................................52
Figure 104: Indication of device info .....................................................................................52
Figure 105: Indication of actual firmware ..............................................................................53
Figure 106: Calibration certificate of EPM-XPplus unit............................................................53
Figure 107: Thompson Adaptor mounted on pressure plate .................................................54
Figure 108: Example for indication of static pressure @ 0 bar..............................................54
Figure 109: Example for indication of static pressure @ 50 bar ............................................55
Figure 110: Indication of main menu.....................................................................................55
Figure 111: Indication of measuring mode............................................................................55
Figure 112: Indication of sensor test.....................................................................................55
Figure 113: Indication @ 0 bar on display ............................................................................55
Figure 114: Indication @ 50 bar Figure 115: Indication on pressure pump.....56
Figure 116: Periodical cleaning of gas channel ....................................................................57
Figure 117: Disconnection of spring Figure 118: Disconnection of sensor from adaptor ..57
Figure 119: Drill 2.5 mm Figure 120: Drill in gas channel of adaptor for cleaning ......58
Figure 121: Special drill tool Figure 122: Special drill tool in gas channel of sensor .58
Figure 123: Example IPE software .......................................................................................60
Figure 124: Ethernet cable ...................................................................................................61
Figure 125: USB-Ethernet Extender .....................................................................................62

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Figure 126: Thompson adaptor for 4-stroke online measurement.........................................63
Figure 127: Pressure pump coupling....................................................................................64
Figure 128: Thread cleaner for Thompson thread.................................................................65
List of tables
Table 1: Dimensions and weight...........................................................................................13
Table 2: Technical specification............................................................................................13
Table 3: Functions of push buttons.......................................................................................17
Table 4: Static pressure comparison ....................................................................................56
Table 5: Basic check for fault finding ....................................................................................59
Table 6: Nomenclature .........................................................................................................59

Operation Manual EPM-XP
plus
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1 Important information
Please study this manual carefully, before using the
equipment. This will ensure that you will receive maximum
benefits from using this engine performance tuning tool with
its versatile functionality and it will guarantee optimum
benefits over its lifetime.
1.1 Use of the operator manual
We strongly recommend you to read the complete manual
before using the equipment.
It was our intention to structure this manual in a clear
layout, to enable you to get easy and instant access to the
information you are looking for. Please keep this manual in
a safe place where it is always available for easy access.
1.2 Copyright
These operating instructions have to be treated
confidentially. They may only be used by the persons
authorised to this effect. They may only be given to third
parties with the written consent of IMES GmbH.
All documents are protected under copyright law.
Dissemination and reproduction of documents or parts of
documents as well as the utilisation and communication of
their contents are prohibited, unless expressly permitted.
Infringements are punishable and liable to damages.
We reserve all rights to exercise industrial property rights.
1.3 Warning Notices
In the present operating instructions the following warning notices are used:
A warning notice of this risk level signals a potentially dangerous situation. If the dangerous situation is not
prevented, this could lead to death or serious injury to persons. Follow the instructions in this warning notice to
prevent the possible risk of death or serious injury to persons.

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plus
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A warning notice of this risk level signals a potentially dangerous situation. If the dangerous situation is not
prevented, this could lead to damage to property. Follow the instructions in this warning notice to prevent
damage to property.
A note identifies additional information that facilitates the handling of the device.
1.4 Address of the manufacturer
IMES GmbH
Dr.-Herbert-Kittel-Str. 2
87600 Kaufbeuren
Germany
Tel.: + 49 8341 966173 0
Fax: [phone]
e-mail: [email protected]e
Web: www.imes.de

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plus
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1.5 Obligations of the operator
The EPM-XP
plus
may be a source of danger if used in an improper manner or not in proper condition.
The operator is obliged to operate the EPM-XP
plus
only in proper condition. Hazard areas arising between IMES
devices and customer equipment are to be secured by the operator.
The operator must designate and instruct responsible persons:
• Only employ trained or instructed personnel.
• Clearly define the responsibilities of the personnel for operation, maintenance, and repair.
• Regularly check if the personnel is working with due safety and risk awareness whilst observing the operating
instructions.
• Before starting work, the personnel assigned to work with the EPM-XP
plus
must have read and understood the
operating instructions, in particular the "Safety" chapter, as well as the applicable regulations.
• Keep the operating instructions and applicable regulations accessible to the operating and servicing personnel.
• Determine the responsibility of the user and allow him to reject all third party instructions that are in breach of
safety regulations.
• For safe operation of this EPM-XP
plus
it is required to wear safety glasses and gloves. Further protective
equipment has to be worn according to the applicable regulations of the operator.
2 Safety
2.1 Intended use
WARNING
Risk of injury due to non-intended use.
EPM-XP
plus
may be a source of danger if operated not in
compliance with the intended use and/or being used
otherwise.
•Use the EPM-XP
plus
for its intended purpose only.
•Observe the procedure described in the operating
instructions.
The EPM-XP
plus
may only be used for measuring combustion pressure on engines. Any other use of the
EPM-XP
plus
is impermissible. The manufacturer/supplier accepts no liability for damage resulting from non-
intended use. The risk exclusively rests with the user/operator.

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plus
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2.2 Personnel requirements
Warning
Work on/with the EPM-XP
plus
may only be carried out by
persons who, because of their education and qualification, are
qualified to do so. Furthermore, they must have been
commissioned to do so by the operator.
Personnel to be trained, instructed or briefed or operating personnel receiving general training may only be
allowed to work with the device under the permanent supervision of an experienced operating person.
Maintenance and repair work may only be carried out by the manufacturer.
2.3 Safety notes
Observe the following notes for preventing accidents while using the EPM-XP
plus
:
• Operate the EPM-XP
plus
only in proper condition.
• Adjustment and/or maintenance work is to be carried out by authorised professionals.
• Before using the EPM-XP
plus
, check it for defects and deficiencies visible on the outside. Immediately notify
any changes (including changes in operating behaviour) to the competent staff/person. If necessary, immediately
put the device out of service and lock/tag it out!
• Keep the operating instructions near the EPM-XP
plus
so as to be readily available at any moment.
• Non-observance of the safety notes contained in these operating instructions may result in property damage,
injuries or even death of persons.
3 Transportation and packaging
3.1 Safety notes for transportation

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plus
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3.2 Scope of delivery
For the exact scope of supply please refer to the order documents and compare to the delivery note.
Check for completeness
Check the entire delivery for completeness based on the attached delivery note. In this context, we are referring
to our conditions of sale and delivery.
Report any damage
Immediately report to the carrier, insurance company and the delivering factory any damage to the device due to
improper packaging or transportation identified after delivery. Take action to mitigate the damage that has
occurred and prevent further damage.
3.3 Packaging
Unless an agreement was made with IMES GmbH regarding the return of the packaging material, the packaging
material remains with the customer.
The most commonly used packaging materials cardboard.
4 Technical data
4.1 Dimensions and weight of instrument case
Length: 45 cm
Width: 35 cm
Heigh: 11 cm
Weight of
instrument case
2,7 kg
Table 1: Dimensions and weight
4.2 Other parameters
Measuring range
0...300 bar
Accuracy (EPM
-
XP
plus
unit incl. HTT
®
sensor)
+/
-
0,5 % full scale
Sampling resolution
0,
05
°CA
on
two
-
stroke ; 0,1°CA o
n four stroke
Resonance frequency HTT
®
-
sensor
>100 kHz
Max.
temperature at measuring cell
300 °C (short time
1 minute
350 °C)
Storing capacity
20 measurements / engine
Online measurement
Via USB
-
/ Ethernet cable
Interface
USB
—
HID
Battery
4 x NiMh A
AA 93
0 mAh
Weight incl. sensor and adaptor
1100 g
Dimension incl. protection cover
210 x 100 x 80 mm
Table 2: Technical specification

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5 Scope of supply
Figure 1: EPM-XPplus incl.all components in instrument case
6 Description
6.1 Introduction
The electronic indicator EPM-XPplus is a handy-, battery
powered-, portable device to measure and evaluate cylinder
pressure on 2- and 4-stroke diesel engines at speed up to 1800
RPM.
The EPM-XPplus collect 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 can be stored in memory.
Up to 20 measurement data sets can be stored in the
EPM-XPplus. The stored data can be downloaded via USB-
interface to a personal computer for evaluation.
The scope of supply includes software for Windows which
allows additional evaluation and visualisation of the
collected data.
Additional continuous online measurement on one cylinder
to analyse actual engine condition by direct data transfer
via USB/Ethernet (max. lenght 50m) to PC
The scope of supply includes the following
components:
- EPM-XPplus unit incl. protection cover incl.
cylinder pressure sensor mounted on Thompson
adaptor
- Tool for to open- and close the Thompson adapter
- 4 pcs. 4 x NiMh AAA 930 mAh
- 1 x USB-cable (1m)
- 1 x USB stick (documentation English/German
and visualisation software)
- 1 x Quickstep manual in English language(printed)
- 1 x Certificate of calibration (printed)

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6.2 Measure functions
Offline function
Pmax: Average of 10 cycles
Pressure curve: Average of 10 cycles
RPM: engine speed
Online function
Continuous online measurement on one cylinder
6.3 Functional description
The cylinder pressure will be measured with the
EPM-XP
plus
unit incl. high temperature pressure sensor and
thompson adaptor at indicator cock on diesel engines.
Memory : 20 data sets
Application 2-stroke 40 – 950 RPM
Application 4 – stroke: 200 – 1800 RPM
NOTE
The EPM-XP
plus
turns off automatically after 10 minutes
without pressing any push button
7 Operation
7.1 Operator push buttons
Figure 2: Push buttons
Arrow up “↑
↑↑
↑“
Arrow down “↓
↓↓
↓“
On/Off
Start measurement
Read measurement
2- or 4-stroke
Set-up menu

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plus
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7.2 Operating functions
Function Key board
push button
Display Notes
Switch On/Off Indication after switch
“On/Off” button. The user
will be informed about
engine selection.
Basic settings will be dis-
played after switching on:
Date and time
Cyl:1 = cylinder no.1
2- or 4-stroke
Pmax in bar ; RPM: speed
After connection on
cylinder and opening on
indicator cock the Pmax
value in bar and engine
speed will be displayed.
Engine selection Push key “2/4“ to select 2-
or 4-stroke engine
”Indication 2-stroke”
”Indication 4-stroke”
Setup Push 3s key “2/4” to select
settings: Clear memory,
Battery type, Device info,
Measuring mode,
Selection of cylinder
Push arrow key “↑
↑↑
↑↓
↓↓
↓“and
change the displayed value
to the number of the
selected cylinder.
”Indication cylinder no.1”
”Indication cylinder no.2”
Start measurement
During measurement the
following information
“Recording cylinder” will
be indicated.
Display indication (1-2 s)
of measured cylinder
values. Then EPM-XP
PLUS
unit switches
automatically to the next
cylinder.

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Table 3: Functions of push buttons
7.3 Install rechargeable batteries
IMES recommends to use rechargeable battery type Panasonic envelope AAA pro 930 mAH
Figure 3: 4 pcs. re-chargeable battery in the transport case
Please disconnect EPM-XP
plus
from protection cover (fig.4) and open battery case (fig.5) and put re-chargeable
batteries into the the battery holder (fig.6).
Figure 4: Back side of EPM-XP incl. protection cover Figure 5: Battery case
Function Key board
push button
Display Notes
Show measurements The measured value for
Pmax and - speed of the
selected cylinder will be
displayed.

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Figure 6: Battery holder
7.3.1 Install batteries to correct pole.
Figure 7: 4 x NiMh AAA 930 mAh installed on battery holder
Note: It is also possible to use Alkaline batteries type AAA
7.3.2 Confirm installed battery type
Start EPM-XPplus by pressing “On/Off”. The setup menu (fig.8) asked for confirmation of installed battery type.
The standard battery type is NiMh rechargeable.
Figure 8: Selection of installed battery type
Select item by arrow key and confirm selection by pressing “2/4” button
Please check correct pole of each battery

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7.4 Charge battery
The EPM-XPplus has 4 pcs. re-chargeable battery type AAA
The battery charging (fig.9) will start after the EPM-XPplus unit is connected via USB cable to PC and battery
voltage is lower than 5,3 V.
Indication of USB connection to PC
Figure 9: Indication during charging process
Figure 10: Indication charging process completed
The indicator can detect the charging status and continuous charging until the rechargeable batteries are fully
loaded (fig.10). Then the charging process stops automatically. It is not recommended to interrupt the charging
process before it is automatically stopped.
7.5 Measurements with EPM-XPplus
•Start measurements on the engine
2- and 4- stroke application
Open indicator cock and close (fig.11). Install sensor with adaptor on cylinder no.1 and open indicator
cock (fig.12)
Figure 11: Indicator cock Figure 12: Adaptor installed on indicator cock
Pressbutton “On/Off” at EPM-XPplus
Figure 13: Indication of 2-stroke mode Figure 14: Indication of 4-stroke mode
The EPM-XP starts always in the last selected engine mode (fig.13 and fig.14). Press button “2/4” for
to change adjusted engine mode.

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Press “Measure” and the measurement starts after warming up sensor to minimum temperature of
50°C (fig.15). After achieving minimum sensor temperature the measurement starts incl. the following
indication (fig.16)
Figure 15: Warming up sensor Figure 16: Indication during measurement
Note: It is possible to start without warming up sensor by press “Measure”
•Indication of measurement results
No. of cylinder Date and time engine type 2- or 4-stroke
Figure 17: Indication of measurement results on display for 3s
Engine speed Temperature of measuring element during measurement
After indication of measured cylinder values (fig.17) the display switches automatically to next cylinder.
Repeat measuring procedure for all remaining cylinders.
NOTE
The EPM-XP
plus
has an overheating protection of measuring cell
for temperature >300°C. In case of indication “Over temp.!”
(fig.18) on display the indicator cock should be immediately
closed and Thompson adaptor disconnected for cooling down
sensor (10 min).
Figure 18: Indication over temperature on measuring cell of sensor