IMES EPM-XPplus User manual

Operation Manual EPM-XPplus
Software Release 1.3.0.2 25.09.2020
Page 1 of 70
Original operating instruction
Electronic Analyser

Operation Manual EPM-XPplus
Software Release 1.3.0.2 25.09.2020
Page 2 of 70
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, Optimization 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
1.3.0.2
New functions:
•Updated engine database
•Support for engine installation templates
•Manual overwrite of calculated scavenge air pressure
•Derivative curves of all cylinders simultaneous visible
•Calculation of ignition point
•Adjustable filtering of pressure curves
•Loading of a measurement file as reference
•Report with additional statistic values and deviation highlighting
25. September 2020

Operation Manual EPM-XPplus
Software Release 1.3.0.2 25.09.2020
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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]
Phone: [phone]
Fax: [phone]
For further information about other IMES products, please visit our website: www.imes.de
Copyright
Copyright © 2020 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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Contents
Contents __________________________________________________________________ 4
List of figures ______________________________________________________________ 6
1Important 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
2Safety_______________________________________________________________ 11
2.1 Intended use _____________________________________________________________11
2.2 Personnel requirements____________________________________________________12
2.3 Safety notes______________________________________________________________12
3Transportation and packaging___________________________________________ 12
3.1 Safety notes for transportation______________________________________________12
3.2 Scope of delivery _________________________________________________________13
3.3 Packaging _______________________________________________________________13
4Technical data________________________________________________________ 13
4.1 Dimensions and weight of instrument case ____________________________________13
4.2 Other parameters_________________________________________________________13
5Scope of supply _______________________________________________________ 14
6Description __________________________________________________________ 14
6.1 Introduction _____________________________________________________________14
6.2 Measure functions ________________________________________________________15
6.3 Functional description_____________________________________________________15
7Operation____________________________________________________________ 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
8Installation of visualisation- and USB driver software________________________ 21
9Visualization software__________________________________________________ 24
9.1 The Application Window __________________________________________________24
9.2 Connecting to the EPM-XPplus device_________________________________________25

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9.3 Download measured data to PC _____________________________________________26
9.4 Open saved data__________________________________________________________27
9.5 Visualization of measured data on PC________________________________________28
9.5.1 P/alpha diagram _______________________________________________________________30
9.5.2 P/volume diagram______________________________________________________________32
9.5.3 P/volume (logarithmic)__________________________________________________________32
9.5.4 Engine report _________________________________________________________________33
9.5.5 Balance diagrams ______________________________________________________________34
9.5.6 Trending _____________________________________________________________________35
9.5.7 Save to ASCII format___________________________________________________________37
9.5.8 Change Engine data ____________________________________________________________37
9.5.9 Engine Database Editor _________________________________________________________38
9.5.10 Installation Template Editor______________________________________________________38
9.5.11 Solver configuration____________________________________________________________39
9.5.12 Color setup ___________________________________________________________________39
9.5.13 Optimize TDC calculation _______________________________________________________40
9.5.14 Save as reference curve _________________________________________________________41
9.5.15 Open a reference file____________________________________________________________41
9.5.16 Delete measurements on EPM-XPplus _______________________________________________42
9.1 Online measurements on engines with EPM-XPplus _____________________________43
9.1.1 Preparation of EPM-XPplus for online measurements on 2-stroke engines__________________43
9.1.2 Preparation of EPM-XPplus for online measurements on 4-stroke engines__________________44
9.1.3 Preparation of EPM-XPplus for online measurements via Ethernet cable ___________________46
9.1.4 Visualization Software __________________________________________________________47
9.1.5 Screen page “Online” ___________________________________________________________48
9.1.6 Screen page “Offline”___________________________________________________________53
9.2 Update firmware to EPM-XPplus from visualisation software _____________________56
9.2.1 Check actual firmware version____________________________________________________56
10 Accuracy check _______________________________________________________ 57
10.1 Check on pressure calibrator _______________________________________________58
10.1 Example of static pressure indication ________________________________________60
11 Cleaning ____________________________________________________________ 61
11.1 Periodically cleaning ______________________________________________________61
11.2 Cleaning in case of hard deposit_____________________________________________61
11.3 Cleaning procedure of adaptor______________________________________________62
11.4 Cleaning procedure of cylinder pressure sensor _______________________________62
12 Basic check for fault finding ____________________________________________ 63
13 Nomenclature ________________________________________________________ 63
14 Option ______________________________________________________________ 64
14.1 IMES IPE Performance evaluation software __________________________________64
14.2 Ethernet cable 20m _______________________________________________________65
14.3 USB Extender for connection to Ethernet cable________________________________66
14.4 Thompson adaptor for 4-stroke continuous online measurement__________________67
14.5 Pressure pump coupling for Thompson adaptor _______________________________68
14.6 Thread cleaner for Thompson thread ________________________________________69
15 EU Declaration of Conformity___________________________________________ 70

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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...........................................................17
Figure 5: Battery case..........................................................................................................17
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......................................................................................................19
Figure 12: Adaptor installed on indicator cock......................................................................19
Figure 13: Indication of 2-stroke mode .................................................................................19
Figure 14: Indication of 4-stroke mode .................................................................................19
Figure 15: Warming up sensor .............................................................................................20
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: Start up window of EPM-XPplus visualization software..........................................24
Figure 27: EPM- XPplus connected via USB cable to PC.......................................................25
Figure 28: Connect button....................................................................................................25
Figure 29: Connect button with connection established........................................................25
Figure 30: Selection of engine configuration.........................................................................26
Figure 31: Entering of specific engine data...........................................................................26
Figure 32: Selection of directory on hard disc of PC for saving data.....................................27
Figure 33: Downloading and TDC calculation process of measured data.............................27
Figure 34: Button “Open”......................................................................................................27
Figure 35: Stored measurement file......................................................................................27
Figure 36: File view..............................................................................................................28
Figure 37: Cylinder selection panel ......................................................................................28
Figure 38: Cylinder details panel..........................................................................................29
Figure 39: Display mode panel.............................................................................................29
Figure 40: Zoom in...............................................................................................................29
Figure 41: Zoom out.............................................................................................................30
Figure 42: Functions of p/alpha diagram ..............................................................................30
Figure 43: Pressure curve adjustments................................................................................31
Figure 44: p/volume diagram................................................................................................32
Figure 45: p/volume (log) diagram........................................................................................32
Figure 46: Engine report diagram.........................................................................................33
Figure 47: Engine report configuration dialog.......................................................................34
Figure 48: Balance diagram .................................................................................................34
Figure 49: Overview of bush puttons....................................................................................35
Figure 50: Selection criteria for measurement files...............................................................35
Figure 51: Selection of measurement files............................................................................35

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Figure 52: Selection criteria for values and cylinder..............................................................36
Figure 53: Display of trending function .................................................................................36
Figure 54: File entry in menu bar..........................................................................................37
Figure 55: CSV file selection................................................................................................37
Figure 56: Engine Configuration Dialog................................................................................37
Figure 57: Engine Database Editor.......................................................................................38
Figure 58: Installation Template Editor.................................................................................38
Figure 59: Engine Configuration Dialog................................................................................39
Figure 60: “Solver Configuration” Dialog...............................................................................39
Figure 61: “Color Setup” Dialog ............................................................................................39
Figure 62: Cylinder pressure curve incl. motored curve........................................................40
Figure 63: Shifted Cylinder pressure curve incl. motored curve............................................40
Figure 64: Button “Save REF” ..............................................................................................41
Figure 65: Save the reference on hard disc of PC................................................................41
Figure 66: Button “Open REF”..............................................................................................41
Figure 67: Selection of reference curve on hard disc of PC..................................................41
Figure 68: Display of selected reference curve in comparison to a cylinder curve ................42
Figure 69: Close reference curve .........................................................................................42
Figure 70: Button “Del.Meas”................................................................................................42
Figure 71: Indicator cock......................................................................................................43
Figure 72: Adaptor installed on indicator cock......................................................................43
Figure 73: EPM-XPplus connected to notebook....................................................................43
Figure 74: Disconnection of spring.......................................................................................44
Figure 75: Disconnection of sensor from adaptor .................................................................44
Figure 76: Connection of HTT-04 sensor on special cooling adaptor....................................44
Figure 77: Indicator cock......................................................................................................45
Figure 78: Adaptor installed on indicator cock......................................................................45
Figure 79: EPM-XPplus connected via USB cable to notebook..............................................45
Figure 80: Overview of online measurement with EPM-XPplus...............................................46
Figure 81: Overview of Ethernet connection to EPM-XPplus ..................................................46
Figure 82: Indication on display for successful connection to PC..........................................47
Figure 83: Connect button....................................................................................................47
Figure 84: Connect button with connection established........................................................47
Figure 85: Indication of online pressure curve......................................................................48
Figure 86: Example for over temperature on measuring cell of sensor.................................48
Figure 87: Button “Pressure curve save” ..............................................................................49
Figure 88: Register for saving the file...................................................................................49
Figure 89: Indication of online pressure curve during saving process...................................50
Figure 90: Button “Working cycle save” ................................................................................50
Figure 91: Indication of online Pmax data.............................................................................51
Figure 92: Record button......................................................................................................51
Figure 93: Register for saving the file...................................................................................51
Figure 94: Indication of Pmax data during recording process ...............................................52
Figure 95: Example for over temperature on measuring cell of sensor.................................52
Figure 96: Screen page “Offline” ..........................................................................................53
Figure 97: Button “100 Pressure curve open” .......................................................................53
Figure 98: Register of saved file...........................................................................................53
Figure 99: Indication of pressure cycles ..............................................................................54
Figure 100: Button “Working cycle open”..............................................................................54
Figure 101: Screen page “working cycle offline” ...................................................................54
Figure 102: Register of saved working cycle data file...........................................................55
Figure 103: Selection of saved Pmax working cycle.............................................................55
Figure 104: Indication of selected Pmax data.......................................................................55
Figure 105: Button “Connect” ...............................................................................................56

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Figure 106: Selection “Tools”................................................................................................56
Figure 107: Selection “Firmware” .........................................................................................56
Figure 108: Load-and update firmware.................................................................................56
Figure 109: Indication of main menu.....................................................................................56
Figure 110: Indication of device info.....................................................................................57
Figure 111: Indication of actual firmware..............................................................................57
Figure 112: Calibration certificate of EPM-XPplus unit............................................................57
Figure 113: Thompson Adaptor mounted on pressure plate.................................................58
Figure 114: Example for indication of static pressure @ 0 bar..............................................58
Figure 115: Example for indication of static pressure @ 50 bar............................................59
Figure 116: Indication of main menu.....................................................................................59
Figure 117: Indication of measuring mode............................................................................59
Figure 118: Indication of sensor test.....................................................................................59
Figure 119: Indication @ 0 bar on display ............................................................................59
Figure 120: Indication @ 50 bar ...........................................................................................60
Figure 121: Indication on pressure pump .............................................................................60
Figure 122: Periodical cleaning of gas channel ....................................................................61
Figure 123: Disconnection of spring.....................................................................................61
Figure 124: Disconnection of sensor from adaptor ...............................................................61
Figure 125: Drill 2.5 mm.......................................................................................................62
Figure 126: Drill in gas channel of adaptor for cleaning........................................................62
Figure 127: Special drill tool .................................................................................................62
Figure 128: Special drill tool in gas channel of sensor..........................................................62
Figure 129: Example IPE software .......................................................................................64
Figure 130: Ethernet cable...................................................................................................65
Figure 131: USB-Ethernet Extender.....................................................................................66
Figure 132: Thompson adaptor for 4-stroke online measurement.........................................67
Figure 133: Pressure pump coupling....................................................................................68
Figure 134: Thread cleaner for Thompson thread.................................................................69
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 ....................................................................................60
Table 5: Basic check for fault finding....................................................................................63
Table 6: Nomenclature.........................................................................................................63

Operation Manual EPM-XPplus
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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 has to be treated
confidentially. They may only be used by the persons
authorized 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 utilization 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:
WARNING
Risk of injury
Consequences of non-observance …
Prevention
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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CAUTION
Property damage due to …
Consequences of non-observance …
Prevention
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.
NOTE
Text of the note …
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]
Web: www.imes.de

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1.5 Obligations of the operator
The EPM-XPplus 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-XPplus 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-XPplus 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-XPplus 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-XPplus may be a source of danger if operated not in
compliance with the intended use and/or being used otherwise.
•Use the EPM-XPplus for its intended purpose only.
•Observe the procedure described in the operating
instructions.
The EPM-XPplus may only be used for measuring combustion pressure on engines. Any other use of the
EPM-XPplus 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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2.2 Personnel requirements
WARNING
Work on/with the EPM-XPplus 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-XPplus:
• Operate the EPM-XPplus only in proper condition.
• Adjustment and/or maintenance work is to be carried out by authorized professionals.
• Before using the EPM-XPplus, check it for defects and deficiencies visible on the outside. Immediately notify
any changes (including changes in operating behavior) 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-XPplus 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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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-XPplus unit incl. HTT®sensor)
+/- 0,5 % full scale
Sampling resolution
0,05°CA on two-stroke ; 0,1°CA on 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 AAA 930 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 is 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. length 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 visualization 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-XPplus 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-XPplus 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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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-XPPLUS
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 Eneloop AAA pro 930 mAh.
Figure 3: 4 pcs. re-chargeable battery in the transport case
Please disconnect EPM-XPplus from protection cover (Figure 4) and open battery case (Figure 5) and put re-
chargeable batteries into the battery holder (Figure 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 (Figure 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 (Figure 9) will start after the EPM-XPplus unit is connected via USB cable to PC and battery
voltage is lower than 5,3 V.
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 (Figure 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 (Figure 11). Install sensor with adaptor on cylinder no.1 and open
indicator cock (Figure 12)
Figure 11: Indicator cock
Figure 12: Adaptor installed on indicator cock
Press button “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 (Figure 13 and Figure 14). Press button
“2/4” for to change adjusted engine mode.
Charging indicator
Charging completed indication
Indication of USB connection to PC

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Press “Measure” and the measurement starts after warming up sensor to minimum temperature of
50°C (Figure 16). After achieving minimum sensor temperature, the measurement starts incl. the
following indication (Figure 16)
Figure 15: Warming up sensor
Figure 16: Indication during measurement
Note: It is possible to start without warming up sensor by pressing “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 (Figure 17) the display switches automatically to next cylinder.
Repeat measuring procedure for all remaining cylinders.
WARNING
DANGER! The indicator valve ejects hot gas under high
pressure. Danger of sparks and burning. Hot gases and particles
may be ejected. Use safety gloves and safety glasses!
NOTE
The EPM-XPplus has an overheating protection of measuring cell
for temperature >300°C. In case of indication “Over temp.!”
(Figure 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