MAHA Maschinenbau Haldenwang MPM-4M Скачать руководство пользователя страница 4

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BA314001-en 

 

 

 

1.5 

Safety Instructions for Servicing 

 

Repair work of any kind (other than routine servicing expicitly covered in this operator manual) 
may only be done by authorized service technicians. In case of non-compliance the warranty 
becomes void. 
 

 

 

 

 

 

2 Description 

 

The MPM 4M is a self-contained maintenance tool which continuously measures the 
concentration of fine particulate matter (PM) in the exhaust of diesel engines, using 
standardized tests developed in joint government/mining industry projects. 
The measurement principle is based on well-established laser light-scattering technologies, 
which are widely accepted and used for measurement of particle concentrations in numerous 
laboratory and industrial applications.  The MPM-4 takes this technology several steps further, 
by adding sophisticated automated data processing capabilities and by ruggedizing the design 
to withstand the harsh operating conditions.  Simple and accessible user maintenance greatly 
reduces the need for inconvenient “back-to-base” servicing. 
Ensuring the accuracy and consistency of measurement is vitally important.  As well as 
performing an auto-zero at the start of each test, the instrument’s calibration can be checked by 
the operator in less than a minute, using the supplied calibration device. 
User-maintainability is also a high priority. If a particularly dirty or wet sample is ingested and 
the instrument’s response is degraded because of dirt on the optical elements, both the laser 
module and/or the detector head can be removed in seconds, without tools. 
Both of these items can be quickly cleaned, using the same cleaning solution and polishing 
cloth used for spectacle cleaning.  In this situation, previous examples of this type of instrument 
would require service at the manufacturer or distributor, including possible replacement of 
expensive components. 
The MPM-4M design ensures that both the laser and the detector are not only readily acces-
sible, but importantly are also positively and repeatably aligned upon re-insertion, without affec-
ting the instrument calibration.  This can be confirmed using the supplied calibration device. 
A single HEPA grade filter is used to remove over 99.9% of particles before releasing the mea-
sured sample stream into the atmosphere.  The filter unit is a standard screw-off housing design 
with a disposable filter element.  No tools are required to change the filter element.  A second 
disposable HEPA filter is located inside the case to continuously filter a stream of ambient air 
which protects the optical elements from contamination by soot or moisture in the sample. 
Added protection for the measuring system is provided by an automatic drain pump, which 
operates every 60 seconds to remove any accumulated condensate from the water trap. 
Unlike other DPM measurement methods which require off-line analysis or manual interpreta-
tion, the MPM-4 continuously displays DPM concentration, and provides an immediate overall 
test result at completion of a test.  This means that maintenance decisions can be made without 
delay, and the effectiveness of any maintenance action can be confirmed prior to releasing the 
equipment back to the work place. 
Weighing less than 9kg (including its integral battery), the instrument is self-contained and is 
designed for stand-alone operation.  With around 2½ hours testing on a single charge, most 
operators prefer to use the instrument on battery power. 
Alternatively, the instrument can operate continuously on an external 12V supply.  A regulated 
12 V DC power pack, which can be connected to a 100-250V, 50/60 Hz AC supply, is supplied 
as standard with the instrument.   Operating power consumption is typically less than 25 watts. 

Содержание MPM-4M

Страница 1: ...rden soll Fehler Verwenden Sie die Registerkarte Start um Name dem Text zuzuweisen der hier angezeigt werden soll Fehler Verwenden Sie die Registerkarte Start um Name dem Text zuzuweisen der hier ange...

Страница 2: ...y 6 3 4 Sample In 7 3 5 Sample Out 7 3 6 RS 232 Output 7 3 7 Analog Output when installed 7 3 8 Remote Control Optional 8 4 Operation 9 4 1 Warm up 9 4 2 Auto Zero Adjust 9 4 3 Test Selection 10 4 4 S...

Страница 3: ...acturer In case of non compliance the declaration of conformity becomes void Any use other than described is inappropriate 1 4 Safety Instructions for Operation The accident prevention regulations of...

Страница 4: ...equire service at the manufacturer or distributor including possible replacement of expensive components The MPM 4M design ensures that both the laser and the detector are not only readily acces sible...

Страница 5: ...ates a number of features that enhance its usefulness in real world situations including Simple one button operation rugged construction for on site applications user maintainable with minimal tools v...

Страница 6: ...ond by second data capture and graphing software for PC 3 2 Instrument Setup Water Trap Sample Filter Fig 1 Rear Panel 3 3 Power Supply The Particle Measurement Unit requires a regulated 12 V DC power...

Страница 7: ...exits from this hose fitting 3 6 RS 232 Output The RS 232 interface can be used to integrate the analyzer into the optional MPM View software for second by second data logging and graphing on a PC see...

Страница 8: ...ch accounts for some minor deviations due to continuous minor fluctuations in PM sample concentration Fig 4 Volts vs PM Concentration mg m3 Low and High Ranges 3 8 Remote Control Optional If an option...

Страница 9: ...erating mode by simply pressing the red Enter push button switch on the front panel and holding it down for around two seconds During the warm up process the zero may be slowly drifting Ensure that th...

Страница 10: ...sting for longer periods under actual operating conditions hold down the ENTER button while turning on the power switch Real time DPM levels can be recorded via the MPM View software on a laptop This...

Страница 11: ...ENTER push button The green LED on the front panel will illuminate steady and a 5 second countdown will start allowing the operator to anticipate the time when measurements will commence Run Test Imm...

Страница 12: ...he supplied MPM View to generate a real time graph of the PM concentration profile over the complete test and record the second by second test data in an EXCEL compatible file See the supplied MPM Vie...

Страница 13: ...nt will start measuring and storing PM concentration measurements and the display will change to the following IDLE screen To assist the operator the green LED will flash slowly for 8 seconds indicati...

Страница 14: ...14 BA314001 en Full Power Idle Full Power Idle 12 seconds...

Страница 15: ...NOTE to log data in the continuous measuring mode the MPM 4M must be connected to a PC laptop with the MAHA Emission Viewer software running see separate user manual To initiate the continuous measuri...

Страница 16: ...ear panel of the analyser by rotating it counter clockwise and then pulling directly from its socket If the plug has not been removed for some time it may require a firm pull to overcome O ring fricti...

Страница 17: ...nd Correct Installation of Detector Head on the measuring chamber 7 After proceeding as above if the display reading is still not within the figure marked on the calibration plug unscrew and remove th...

Страница 18: ...e clear casing The filter should be checked daily Filtered sample flows from the inside to the outside of the media If black or dark brown discolouring is evident on the media surface the element must...

Страница 19: ...check is done monthly The following photograph shows the correct orientation for re fitting the disposable filter Fig 9 Internal Filter Orientation 7 Disposal If you want to dispose of the equipment p...

Страница 20: ...hicle must be safely chocked and the vehicle brakes must be applied Important Safety Notice As engines must be tested in the load condition requiring the drive train to be engaged during testing it is...

Страница 21: ...abilises Exhaust particulate sampling and analysis shall be performed when the diesel engine is at normal operating temperature d The vehicle must be safely chocked and the vehicle brakes must be appl...

Страница 22: ...timer indicates 32 seconds and quickly release throttle n Idle engine until timer indicates 40 seconds o Quickly apply full throttle again hold until timer indicates 48 seconds and quickly release th...

Страница 23: ...are However errors cannot be fully excluded Subject to technical change without notice Document Document BA314001 en Approval Date 27 10 2011 Manufacturer MAHA Maschinenbau Haldenwang GmbH Co KG Hoyen...

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