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Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 1 of 13
Electronic Peak Pressure Indicator
EPM-Peak Operating Instructions
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 2 of 13
1 Introduction ___________________________________________________________ 3
2 The Peak Pressure Indicator EPM-Peak _____________________________________ 3
2.1 General Description ________________________________________________________ 3
2.2 Measure functions _________________________________________________________ 3
2.3 Scope of supply ____________________________________________________________ 4
2.4 Technical Specifications _____________________________________________________ 4
3 Operation _____________________________________________________________ 5
3.1 Battery installation and removal ______________________________________________ 5
3.2 Check of battery status ______________________________________________________ 6
3.3 Charge battery _____________________________________________________________ 6
3.4 Operator push buttons ______________________________________________________ 7
3.5 Operating functions ________________________________________________________ 8
3.6 Operation procedure _______________________________________________________ 10
3.7 Sensor over temperature ___________________________________________________ 11
4 Accuracy check _______________________________________________________ 11
4.1 Connection of EPM-Peak to pressure calibrator _________________________________ 11
4.2 Generate pressure at pressure calibrator ______________________________________ 12
4.3 Disconnect EPM-Peak from pressure calibrator _________________________________ 13
5 Basic check for fault finding _____________________________________________ 13
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 3 of 13
1 Introduction This operation manual provides instructions on how to
use the EPM-Peak correctly and safely for the intended
purpose.
Please study this manual carefully, before using the
EPM-Peak. Follow all safety instructions and
precautionary notes in order to avoid damage to
people or property during operation.
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. Please keep the manual in a
safe place where it is always available for easy access.
We ask for your understanding, that we will reserve
the right to change information and instructions in
this manual if necessary without giving notice in
advance.
2 The Peak Pressure Indicator EPM-Peak
2.1 General Description
The electronic indicator EPM-Peak is a handy-, battery
powered-, portable device to measure the maximum
value of cylinder pressure on 4-stroke diesel engines.
The cylinder pressure will be measured with the EPM-
PEAK unit incl. high temperature pressure sensor at
indicator cock on marine diesel engines.
The EPM-Peak 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.
2.2 Measure functions
Pmax: average max. pressure of 10 cycles in bar
RPM: engine speed U/min
Memory: 200 data sets
Application 4 – stroke: 200 – 1500 RPM
Measuring range: 0 – 300 bar
The battery must be recharged after approximately
one hour of continuous operation.
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 4 of 13
2.3 Scope of supply
1x EPM-Peak unit including protection cover
1x CPS cylinder pressure sensor
1x Battery 9V E-block re-chargeable NiMh
1x Thompson adaptor W27x1/10"
1x Hollow spanner mounting tool
1x USB cable
1x Calibration certificate
1x Operation manual on CD
1x Instrument case (optional)
2.4 Technical Specifications
Measuring range 0…300 bar
Accuracy < 1 % Full Scale
Max. temperature at sensor measuring cell 300 °C
Storing capacity 200 measurements
Dimension without sensor 210 x 100 x 80 mm
Weight (incl. battery) 1150 g
Fig.2: Instrument case with all components
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 5 of 13
3 Operation
3.1 Battery installation and removal
Your device is powered by a 9-volt rechargeable battery. When the operation times are noticeably
shorter than usual, replace the battery. Only use rechargeable battery E-block type ANSMANN 300
mAh NiMh. Don´t change the battery during charging process while EPM-PEAK is connected via USB
cable to PC. Never use any battery that is damaged. Batteries may explode if damaged. Do not short-
circuit the battery. Do not dispose of batteries in a fire as they may explode. Dispose of battery
according to local regulations. Please recycle when possible. Do not dispose as household waste.
Take the EPM-Peak out of the protection cover. In order to replace the battery the back side cover of
EPM-Peak must be opened. Press the locking mechanism and move the battery cover back.
Fig.3: Open battery covers Fig.4: Re-chargeable E-block battery
The battery can then be pulled out of the carrier. When installing a new battery into the carrier,
make sure that the polarity matches as shown here.
Fig.5: Battery polarity
Then completely slide the battery cover to closed position and return the EPM-XP into the protection
cover.
+ Pol
- Pole
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 6 of 13
3.2 Check of battery status
Push key “2/4“ to check the battery status.
Fig.6: Indication of battery charge state
3.3 Charge battery
The EPM-Peak has a rechargeable battery. The battery charging will start automatically after the
EPM-Peak unit has been connected via USB cable from USB port to PC. At first usage please connect
EPM-Peak via USB cable to PC to charge battery for 2 hours continuously.
Fig.7: USB-port of EPM-Peak Fig.8: EPM-Peak connected via USB cable to PC
The EPM-Peak can detect the charging status and continuous charging until the battery is fully loaded.
Then the charging process stops automatically. It is not recommended to interrupt the charging
process before it is automatically stopped. The charging process is finished when the display message
"EPM-Peak charging..." disappeared.
Fig.9: Indication during charging process Fig.10: Indication charging process completed
If the battery status is low, and the charging process stops after 5-10 minutes, then the user can
manually force the unit to charge the battery for 120 minutes by pressing both arrows buttons
coevally at the EPM-Peak for 2 seconds (forced charging mode). It is not recommended to use the
forced charging mode when the battery charge condition is more than 40%, due to the risk of
overcharging.
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 7 of 13
3.4 Operator push buttons
Fig.11: Push buttons
Arrow up “↑“
Arrow down “↓“
On/Off
Start measurement
Read measurement
Operation mode
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 8 of 13
3.5 Operating functions
Function Key board
push button
Display Notes
Switch On/Off
Basic settings will be dis-
played after switching on:
Cyl:1 = cylinder no.1
4 stroke
Pmax: bar
RPM: U/min
Battery check
Push key “2/4“ to check
the battery status. Also
temperature at sensor
measuring element will be
displayed.
Sensor check
Push key “2/4“ two times
to check the sensor status
at 0 bar.
Selection of cylinder
Push arrow key “↑↓“
change the displayed
value to the number of
the selected cylinder.
Short-time pushing the
arrow key will step
forward in single cylinder
steps.
Continuous pushing the
arrow key will step
forward in 10 cylinder
steps.
Start measurement
During measurement the
following information
“Recording cylinder” will
be indicated.
Display indication (1-2 s)
of measured cylinder
values.
Then EPM-Peak switches
automatically to the next
cylinder.
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 9 of 13
Read Pmax
Push “Read” and then the
measured value for Pmax
of the selected cylinder
will be displayed.
Delete measurements
+
Push “Read” and “↑“
at the same time for 2s to
delete the currently dis-
played measurement.
Push “Read” and “↑“
at the same time
continuous to delete all
measurement.
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 10 of 13
3.6 Operation procedure
Before mounting the adaptor, please clean the indicator valve by opening (1-2seconds). The indicator
valve should be blown through briefly before starting the measurement to make sure there are no
condensed water, oil or soot deposits.
Close the indicator valve.
Mount the EPM-Peak sensor with adaptor onto the indicator valve at cylinder number 1.
It is not allowed to use a hammer or equivalent tool to attach or remove the EPM-Peak from the
indicator valve. The user must use the provided hollow spanner tool.
Open indicator valve fully.
Press “On” at EPM-Peak
Press “Measure” and wait about 5-10 seconds
Fig.12: Indication during measurement on cylinder
Fig.13: Indication (1-2 s) of measured values from cylinder
Close the indicator valve.
After indication of measured cylinder values, the display switches automatically to next cylinder.
Repeat measuring procedure for all remaining cylinders.
The measuring period should never exceed 30 seconds per cylinder.
The EPM-XP turns off automatically after 2 minutes without pressing any push button.
DANGER!
The indicator valve ejects hot gas under high pressure. Danger of sparks and burns.
Put on suitable gloves as the adaptor will get very hot during operation.
The use of safety glasses is required when operating the EPM-Peak. Hot gas and particles may be
ejected from the engine.
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 11 of 13
3.7 Sensor over temperature
The EPM-Peak is indicating “Over Temp.!” if the sensor measuring cell temperature come up to
300°C.
Fig.14: Indication of sensor over temperature
In this case, disconnect the sensor from indicator cock and wait 5-10 minutes.
4 Accuracy check The EPM-Peak is adjusted at IMES workshop at different pressure values (0…300 bar) and
temperature values (50°C- 200°C). A calibration certificate will be delivered with each EPM-Peak unit.
The EPM-Peak has a very stable and long life cylinder pressure sensor. We emphasize to check
calibration values of EPM-Peak at pressure calibrator by hydraulic oil once a year.
4.1 Connection of EPM-Peak to pressure calibrator
Connect EPM-Peak unit with Thompson adaptor to pressure calibrator.
Please check possible leakage at adaptor by generating pressure.
Fig.15: Connection of EPM-Peak to pressure calibrator
The pictured pressure calibrator is an example to generate pressure. At your workshop you can use
your standard pressure calibrator.
Adjusted pressure at
calibrator
Indication of pressure
on EPM-Peak
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 12 of 13
4.2 Generate pressure at pressure calibrator
We emphasize to check EPM-Peak at most frequently measured Pmax-value on engine.
For example pressure values at 0 bar and between 100 bar – and 200 bar.
Fig.16: Example for indication of static pressure (0 bar) by generating pressure at pressure calibrator
and indication of static pressure value on EPM-Peak display.
Fig.17: Example for indication of static pressure (150 bar) by generating pressure at pressure calibrator
and indication of static pressure value on EPM-Peak display.
Checking procedure:
a) Switch – On by pressing operating key “On/Off “ at EPM-Peak
b) Generate pressure 0 bar at pressure calibrator
c) Press 2 x operating key “2/4“ at EM-Peak. The static pressure value will be displayed
d) Generate pressure for example between 100- and 200 bar at pressure calibrator
f) Check displayed pressure
g) Compare generated pressure at pressure calibrator and displayed pressure value at EPM-Peak.
The maximum acceptable difference between adjusted pressure at pressure calibrator by ambient
(20-30°C) temperature and displayed static pressure at EPM-Peak is +/- 4 bar. By increasing pressure
difference we emphasize to send EPM-Peak unit to IMES workshop for new adjustment and
calibration.
The accuracy of the EPM-Peak unit according technical data is +/- 1.0% full scale (0…300 bar) in the
adjusted temperature range of 50°C- 200 °C.
Operation manual EPM-Peak
Software release 2.08 2014-09-02
Page 13 of 13
4.3 Disconnect EPM-Peak from pressure calibrator
The Thompson adaptor of EPM-Peak must be dismounted from adaptor of pressure calibrator. After
disconnection the Thompson adaptor incl. gas channel of cylinder pressure sensor must be cleaned
from oil by using pressurized air.
5 Basic check for fault finding
Before contacting your local agency or service partner, check the problem guide below.
Problem Indication at EPM-PEAK Action
EPM-PEAK display id black after
pushing the “On/Off” button
Recharge the battery by
connecting to USB port from
EPM-Peak to PC
Low battery after full charging
If the battery status is low and charging
process finished after 5-10 minutes
then the user can charge battery
manually 90 min.
It is not recommended to use the
Forced Charging Mode when the
battery charge condition is more than
40%, due to the risk of overcharging.
Please see chapter 3.2 for a description
how to check the charge state.
Connection to USB port of PC and
press 2 seconds both arrows
buttons
+
Over temperature indication
Indication after temperature of
measuring cell > 300 °C
Disconnect sensor from indicator
cock and wait 5-10 minutes
High offset
Sensor is defect.
Please send EPM-Peak unit to
IMES workshop
No signal
Engine speed is lower than 200 RPM or
indicator cock is not opened
Open indicator cock