electronic peak pressure indicator epm-peak · 2015. 2. 12. · operation manual epm-peak software...

Operation manual EPM-Peak

Software release 2.08 2014-09-02

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Electronic Peak Pressure Indicator

EPM-Peak Operating Instructions



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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



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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.



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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



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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



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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.



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3.4 Operator push buttons

Fig.11: Push buttons

Arrow up “↑“

Arrow down “↓“

On/Off

Start measurement

Read measurement

Operation mode



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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.



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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.



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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.



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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



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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.



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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

electronic peak pressure indicator epm-peak · 2015. 2. 12. · operation manual epm-peak software...

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