Pacific Data Systems DPM-RT-2 User manual

DPM-RT-2 –Real-Time Diesel Particulate Analyser
DPM-RT-2
Operating Manual
Version 2.1

P A C I F I C D A T A S Y S T E M S A U S T R A L I A
DPM-RT-2 Real-Time Diesel Particulate Analyser
Operating Manual
©Pacific Data Systems (Australia) Pty Ltd
27 Hi-Tech Court, Eight Mile Plains, Brisbane, QLD, 4113
Phone [phone]
Email: [email protected]om.au
Web: www.pacdatasys.com.au

Table of Contents
1SAFETY 1
1.1 Introduction 1
1.2 Symbols 1
1.3 Intended Use 2
1.4 Safety Instructions for Operation 2
1.5 Safety Instructions for Servicing 2
2OVERVIEW 3
3SETTING UP THE DPM-RT-2 4
3.1 Unpacking 4
3.2 Instrument Setup 4
3.3 Power Supply 5
3.4 Sample Hose Connector 6
3.5 USB Port 6
3.6 Remote Control 6
4OPERATION 7
4.1 Warm up 7
4.2 Common Buttons and Icons 7
4.3 Main Screen 8
4.4 Shutdown / Power Off 8
4.5 System Info 9
4.6 Stall Test 9
4.6.1 Test Details 9
4.6.2 Zero Instrument 9
4.6.3 Insert Probe 9
4.6.4 Initiate Test 10
4.6.5 Run Test 10
4.7 Free Acceleration Test 11
4.7.1 Test Details 11
4.7.2 Zero Instrument 11
4.7.3 Insert Probe 11
4.7.4 Initiate Test 11
4.7.5 Run Test 12
4.8 Continuous Measurement 13
4.8.1 Test Details 13
4.8.2 Zero Instrument 13
4.8.3 Insert Probe 14
Page

4.8.4 Initiate Test 14
4.8.5 Run Test 14
5DATA LOGGING / PREVIOUS TESTS 15
5.1Previous Tests 15
5.2 Data Download over WiFi 16
5.2.1 Accessing the DPM-RT-2’s Internal Web Portal 16
5.2.2 Router Settings for a Persistent IP Address 16
5.2.3 Login / Enter PIN Code 17
5.2.4 Access Point Mode Error! Bookmark not defined.
5.2.5 List of Test Results 17
5.2.6 View Test Results 20
5.2.7 Graph Test Results 20
5.2.8 Download Test Results 21
5.2.9 Logout 21
6SETTINGS 22
6.1 Date and Time 23
6.2 Diagnostics 24
6.3 Disk Management 25
6.4 WiFi 26
6.4.1 Client Mode 26
6.4.2 Access Point Mode 26
6.5 Pin Codes 26
6.6 Response Factor 24
7CALIBRATION CHECK 25
7.1 Using the Calibration-Check Plug 25
5.2 Calibration Services 26
8TECHNICAL SPECIFICATIONS 27
APPENDIX A: MDG 29 TEST PROCEDURES (EXTRACT) 28
APPENDIX B: DOCUMENT / CONTACT INFORMATION 32

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DPM-RT-2 Operating Manual
1Safety
1.1 Introduction
Thoroughly read this manual before operating the equipment and comply with
the instructions.
Always display the manual in a conspicuous location.
Personal injury and property damage incurred due to non-compliance with these safety instructions
are not covered by the product liability regulations.
When viewing a digital version of this manual there are selectable links to other sections in the
manual contents and where sections are referred to throughout. To select the link hold CNTL and
click the section number with your mouse. Sections are also collapsible.
1.2 Symbols
Failure to comply with instructions could result in personal injury.
Failure to comply with instructions could result in property damage.
Important information.
Class 3B Laser radiation when open. 3B lasers are hazardous for eye
exposure. Do not dismantle or modify unit.
No user serviceable parts inside. Refer servicing to authorised personnel.
Chapter
1

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DPM-RT-2 Operating Manual
1.3 Intended Use
•This testing device is a technical piece of equipment that is to be used exclusively for its intended
purpose.
•The testing device may not be modified without the express written consent of the manufacturer.
1.4 Safety Instructions for Operation
•The accident prevention regulations of the country in which the Particle Measurement Unit is being
operated apply.
•The Particle Measurement Unit may not be installed and operated in hazardous locations or washing
bays.
•The Particle Measurement Unit may only be used for its intended purpose and within its stated
performance limits.
•The Particle Measurement Unit may only be operated by trained personnel.
•All parts of the Particle Measurement Unit must be protected from moisture and corrosive
substances.
•The Particle Measurement Unit and the surrounding work area must be kept clean.
•Running vehicle engines in closed rooms represent potential carbon monoxide poisoning. The
operator/owner is responsible for providing sufficient air ventilation.
1.5 Safety Instructions for Servicing
Repair work of any kind (other than routine servicing explicitly covered in this operator manual) may only be
done by authorized service technicians. In case of non-compliance the warranty becomes void.

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DPM-RT-2 Operating Manual
2Overview
The DPM-RT-2 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 DPM-RT-2 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 5 minutes, using
the supplied Calibration-Check Plug.
A single HEPA grade filter is used to remove over 99.9% of particles before releasing the measured 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.
*Note: this filter is only serviced annually when returned to your local service centre or manufacturer.
Unlike other DPM measurement methods which require off-line analysis or manual interpretation, the DPM-
RT-2 continuously displays DPM concentration and provides an immediate test result during and 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
workplace.
Weighing approximately 5kg (including its internal battery), the instrument is self-contained and is designed
for stand-alone operation. With around ~3 hours continuous testing on a single charge, most operators
prefer to use the instrument on battery power.
Designed specifically for operation in the harsh environments typically associated with mobile and stationary
diesel engines, the instrument incorporates several 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
•wide measurement range (0 …420 mg/m3elemental carbon)
•automatic instrument zero setting prior to every test
•field calibration check in 5 minutes using supplied calibration-check plug
Chapter
2

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DPM-RT-2 Operating Manual
3Setting Up the DPM-RT-2
3.1 Unpacking
The DPM-RT-2 instrument and its accessories are shipped from the factory in a single box.
The box contents are as follows:
•DPM-RT-2 instrument
•Tail pipe probe
•Sample hose
•24V / 2.5A DC Plug Pack
•Calibration-Check Plug
•5 x Spare filter elements (external filters)
•Operator manual
•Remote ENTER button and LED with 7m cable
•Heavy duty portable carry case (w/- wheels, carry handle)
3.2 Instrument Setup
Chapter
3
Carry Handle
Enter Button
Touch Screen
LED Status Indicator
Remote Control
Connection

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DPM-RT-2 Operating Manual
3.3 Power Supply
The DPM-RT-2 is powered by its internal NiMH battery and may be operated while the battery is being
charged. The unit can be charged with a 60W DC power source between 9V –36V when the unit is powered
off, or between 12V –36V when the unit is powered on. The unit is shipped with a DC plug pack that can
source 24V @ 2.5A, product code DPM-RT-2-AC-LEAD. A 12V @ 5A source can also be used which can be
obtained from a cigarette lighter in a car or truck using the optional cable available from Pacifica Data
Systems Australia or your local distributor, product code DPM-RT-2-DC-LEAD.
Filter
Sample Hose
Connector
Operation / Calibration-Check Plug
Battery Charge
Connector
USB Port
Carry Handle
DPM-RT-2-AC-LEAD: 110V-240V 50/60Hz Power Lead
DPM-RT-2-DC-LEAD: Cigarette Lighter Power Lead

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DPM-RT-2 Operating Manual
3.4 Sample Hose Connector
For easy storage, the sample hose is removable from the tail pipe probe, and the DPM-RT-2 instrument.
To separate, simply disconnect the hose by pulling back on the knurled connector.
To reconnect, push the connectors together until the sample hose clicks into place.
3.5 USB Port
The USB port can be used to download historical test data to a USB drive. See Section 5.1 Previous Tests.
3.6 Remote Control
The wired remote-control button/LED may be connected to the 6mm jack connector at the lower right-hand
corner of the front panel. The function of the remote control is to duplicate the ENTER key and LED on the
front panel, facilitating one-person testing by allowing the instrument to be operated from the driving position
of the vehicle or equipment under test.

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DPM-RT-2 Operating Manual
4Operation
4.1 Warm up
The warm-up screen allows the sampling chamber to get to reach its optimal operating
temperature after the unit is powered on. Performing tests before the unit is warm can
introduce errors in your readings. When the sampling chamber is lower than 40°C it will
read slightly lower and will slowly increase until the target temperature is reached.
4.2 Common Buttons and Icons
In the top corners on every screen on the DPM-RT-2, two icons will be displayed, one to indicate the battery
voltage and the other to indicate the status of the Sampling Chamber’s Heater. When the heater is on and
currently heating the chamber, the icon in the top right-hand corner will go red, otherwise it will be grey.
On all screens except for the Main and Warm Up screens there will be either a Cancel Button and/or a
Submit Button. If the Cancel Button is tapped, then all data entered in the current screen is discarded and
the screen is closed. If the Submit Button is tapped, then all data entered in the current screen is saved and
the screen is closed.
Chapter
4
Optimal Operating Temperature
Skip Warm Up, Show Main Menu
Current Temperature
Battery Voltage
Current Date/Time
Heater Status
Battery Voltage
Submit Button
Cancel Button

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DPM-RT-2 Operating Manual
4.3 Main Screen
When the DPM-RT-2 boots up, it will show the system’s Main Screen which allows the user to start a test,
view previous test results, view the unit’s status, configure the unit or shutdown/power off the unit.
The DPM-RT-2 is pre-programmed to lead the
operator through one of two standardised test
procedures; either a Stall Test for vehicles and plant
with a torque converter, and a Free Acceleration Test
for other types of equipment, such as vehicles with a
manual clutch. See Sections 4.6 Stall Test and 4.7
Free Acceleration Test.
The Continuous Test can be used when testing for
longer periods such as under actual operating
conditions. This operating mode also allows
calibration checks to be done more quickly and
conveniently while logging the results. See Section
4.8 Continuous Measurement.
The Previous Tests screen can be used to view overall results as well as chart the PM value over test’s
timespan for a graphical representation of the test results. Raw CSV data of the test results can be
downloaded over WiFi. See Section 5 Data Logging / Previous Tests.
The system’s calibration and WiFi status can be accessed via the System Info button, these settings are
described in Section 4.5 System Info.
The system’s settings can be accessed via the Settings button, these settings are described in Section 6
Settings.
4.4 Shutdown / Power Off
The DPM-RT-2 operates like any other computer system, in that it needs to be shutdown to avoid potential
data corruption on its internal disk. This can be done via the Shutdown button on the Main Screen.
If the ENTER Button is held in for 10 seconds, then the unit with power off instantly without shutting down.
Powering off the DPM-RT-2 via this method is not recommend as it risks data corruption on the unit. This
should only be used if the on-screen Shutdown button cannot be used for some reason.
On-screen Shutdown button
Cancel Shutdown
Confirm Shutdown

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4.5 System Info
The System Info screen provides a brief overview of
the DPM-RT-2 and includes the following information:
•Model Number
•Software Version
•Serial Number
•Calibration Due Date
•If the sensor is at optimal temperature (40°C)
•WiFi Connection Status
•System disk, CPU and memory usage.
4.6 Stall Test
The Stall Test consists of 20s Idle, 20s Full Power and 20s Idle. Total time: 60 seconds.
4.6.1 Test Details
The test’s details are a set of text parameters that allow you identify this
test in the list of previous results. It also allows the user to associate a
piece of equipment with the test.
Tapping on the buttons will bring up an on-screen keyboard for the user
to enter in the required information.
4.6.2 Zero Instrument
Prior to any test, the instrument initiates an auto-zero procedure, prompting the operator to ensure that the
sample probe is in relatively clean air (for instance, not directly downstream from the exhaust of an
operating engine). This procedure ensures the exhaust paths into the unit are clear from exhaust fumes.
4.6.3 Insert Probe
Insert the supplied sample probe fully into the exhaust of the vehicle or
plant under test, using the spring wire retainers to secure the probe in
position. Confirm that the engine is running and at normal operating
temperature, with the transmission engaged in accordance with the
MDG 29 procedures, see Appendix A:
MDG 29 Test Procedures (Extract).
WiFi IP Address for accessing the
unit’s internal web portal.
WiFi Adapter MAC Address

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DPM-RT-2 Operating Manual
4.6.4 Initiate Test
After inserting the probe, check that the vehicle or plant under test is
chocked or braked to prevent movement and ensure that all personnel
are clear. With the test operator at the controls, check for clear line of
sight to the DPM-RT-2 screen or remote. When ready, press the ENTER
button or tap the Green Tick 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.
4.6.5 Run Test
Immediately after the countdown, the instrument 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, indicating
measuring is ON and the engine should be at normal idle speed (with
the transmission engaged).
After 20 seconds the green LED with start to flash quickly, indicating the
Full Power mode of the test. At this point the operator should rapidly
apply full throttle and hold the engine at full throttle.
The screen changes to show FULL POWER and updates the exhaust PM
concentration every second.
After 20 seconds at full throttle the green LED once again flashes slowly,
indicating a return to normal idle speed. The operator should rapidly
return the throttle to the idle position.
After 20 seconds at idle, measurements are terminated. At this point
the LED is turned off and the screen flashes a FINISHED message. The
screen then displays the overall test result together with some other
test data which may aid maintenance personnel to identify any
emission-related faults in the engine or fuel management system.

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4.7 Free Acceleration Test
The format of the Free Acceleration Test is like the Stall Test, but there are some important differences,
notably:
•testing is performed with the transmission in neutral
•there are three acceleration peaks, compared with just one in the Stall Test.
The test consists of: 8s idle, 8s full power, 8s idle, 8s full power, 8s idle, 8s full power, 12s idle. For
completeness, the full test procedure follows.
4.7.1 Test Details
The test’s details are a set of text parameters that allow you identify this
test in the list of previous results. It also allows the user to associate a
piece of equipment with the test.
Tapping on the buttons will bring up an on-screen keyboard for the user
to enter in the required information.
4.7.2 Zero Instrument
Prior to any test, the instrument initiates an auto-zero procedure, prompting the operator to ensure that the
sample probe is in relatively clean air (for instance, not directly downstream from the exhaust of an
operating engine). This procedure ensures the exhaust paths into the unit are clear from exhaust fumes.
4.7.3 Insert Probe
Insert the supplied sample probe fully into the exhaust of the vehicle or
plant under test, using the spring wire retainers to secure the probe in
position. Confirm that the engine is running and at normal operating
temperature, with the transmission disengaged in accordance with the
MDG 29 procedures, see Appendix A:
MDG 29 Test Procedures (Extract).
4.7.4 Initiate Test
After inserting the probe, check that the vehicle or plant under test is
chocked or braked to prevent movement and ensure that all personnel
are clear. With the test operator at the controls, check for clear line of
sight to the DPM-RT-2 screen or remote. When ready, press the ENTER
button or tap the Green Tick button.

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DPM-RT-2 Operating Manual
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.
4.7.5 Run Test
Immediately after the countdown, the instrument 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,
indicating measuring is ON and the engine should be at normal idle
speed (with the transmission engaged).
The green LED will then flash quickly for a further 8 seconds, indicating
the first Full Throttle (Regulated Speed) mode of the test. At this point
the operator should rapidly apply full throttle and hold the engine at full
throttle.The screen changes to show FULL POWER and updates the
exhaust PM concentration every second.
Subsequently, every 8 seconds the LED flashing speed and screen
display alternate between Idle and Full Power Modes.
Full Power
(8 seconds)
Full Power
(8 seconds)
Idle
(8 seconds)
Idle
(12 seconds)
After the final 12 seconds at Idle, measurements stop and the test is finished.

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DPM-RT-2 Operating Manual
At this point the LED is turned off and the screen flashes a FINISHED message. The screen then displays the
overall test result. After the Green Tick is tapped some additional test data is displayed which may aid
maintenance personnel to identify any emission-related faults in the engine or fuel management system.
4.8 Continuous Measurement
The DPM-RT-2 also has a capability to continuously measure and record DPM concentration. This feature is
very useful if you wish to record DPM over an extended period, such as on-equipment monitoring during
normal workloads.
4.8.1 Test Details
The test’s details are a set of text parameters that allow you identify this
test in the list of previous results. It also allows the user to associate a
piece of equipment with the test.
Tapping on the buttons will bring up an on-screen keyboard for the user
to enter in the required information.
4.8.2 Zero Instrument
Prior to any test, the instrument initiates an auto-zero procedure, prompting the operator to ensure that the
sample probe is in relatively clean air (for instance, not directly downstream from the exhaust of an
operating engine). This procedure ensures the exhaust paths into the machine are clear from exhaust fumes.

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DPM-RT-2 Operating Manual
4.8.3 Insert Probe
Insert the supplied sample probe fully into the exhaust of the vehicle or
plant under test, using the spring wire retainers to secure the probe in
position. Confirm that the engine is running within the desired
operating conditions for the test. When ready, press the ENTER button
or tap the Green Tick button.
4.8.4 Initiate Test
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.
4.8.5 Run Test
The DPM-RT-2 will now run in continuous mode until the test is either cancelled for finished via the Red
Cross and Green Tick buttons respectivly. If the test is cancelled, then the test data will not be available
under the previous tests screen, otherwise if the Green Tick button is tapped, then the test will appear
under the previous tests screen.
Running vehicle engines in closed areas represents a risk of potential carbon
monoxide poisoning.
➢The operator/owner is responsible for providing sufficient air ventilation.

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DPM-RT-2 Operating Manual
5Data Logging / Previous Tests
5.1 Previous Tests
The Previous Tests screen allows the user to recall previous test results and plot the
PM over the testing time for graphical representation of the results. Tests are
listed with the most recent test at the top of the list and will show 11 results per
page. The previous/next buttons at the bottom of the screen allow the user to
navigate through the various pages of test results.
When the Filters button is tapped it will bring up
a screen to search for tests results.
The Download to USB button will be greyed out
if there is no USB drive inserted into the unit.
Otherwise, if the button is active and is tapped,
then all tests that match the current search
filters will be download to the USB drive.
There are a variety of filters to allow users to
search for test results, these include:
•Start Date/Time
•End Date/Time
•Test Type
•Vehicle
•Section
•Engine
To speed up searching for test results the
buttons at the bottom of the screen when
tapped will prefill the start and end date/times
to the period stated on the button.
Once a test is selected via tapping on it, the row
will be highlighted. If the user, then taps the
View Details button they will be shown the
standard test results screen. From this screen the
user can plot the test results in chart for a
graphical representation of the results via the
Graph Results button or this single test can be
downloaded via the Downloaded to USB button.
Chapter
5
Jump to first page
Jump to previous page
Jump to next page
Jump to last page

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5.2 Data Download over WiFi
When the user logs into the web portal hosted by the DPM-RT-2 they will be presented with a list of tests
that were conducted on the unit. From here they will be able to view a graph of the test results or download
a CSV file which can be opened in Excel. This CSV file contains 1 second PM data points, which can then be
plotted or analysed further on a laptop, PC, smartphone, or tablet.
5.2.1 Accessing the DPM-RT-2’s Internal Web Portal
The DPM-RT-2’s Internal Web Portal can be accessed from any computer,
laptop, phone or tablet that is connected to the same network as the DPM-
RT-2. Once both devices are connected to the network, the IP Address of
the DPM-RT-2 must be retrieved from the unit, this can be done via the
System Info screen, See Section 4.5 System Info.
Then on a browser on the remote device computer, smartphone,
or tablet type in the IP Address of the DPM-RT-2 prefixed with
“http://”and followed by the enter or return key, in this example
the address of the DPM-RT-2 would be:
http://172.16.8.192
5.2.2 Router Settings for a Persistent IP Address
The DPM-RT-2 will fetch an IP Address for use on the WiFi network using a standard network protocol called
DHCP which stands for Dynamic Host Configuration Protocol. Basically, once your unit authenticates itself
on the WiFi network the next step is to lease an IP Address from the network’s DHCP server. The DHCP
server owns all the IP addresses and the DPM-RT-2 is just borrowing it. This means that each time your unit
connects it can get a different IP Address which can make remote connections to the unit problematic.
This DHCP server is generally just a service running on your WiFi Router, unless you have a more complicated
network configuration in which case you will need to speak to your IT department.
Log into your router using web browser and navigate to the DHCP settings on your router, you may need to
consult your router’s documentation for configuring a persistent IP Address for your DPM-RT-2. In the DHCP
settings there will be a section for creating Static Leases. The MAC Address is the physical address of the
WiFi adapter in your DPM-RT-2, this can be obtained from the System Info screen. To ensure your unit gets
the same IP Address every time it connects to the network a Static Lease must be created so that the DHCP
server will always lease the same IP Address to your unit. This is done by mapping a MAC Address to an IP
Address. Below is an example of such a configuration, which tells the router to always give the IP Address of
192.168.1.108 to the DPM-RT-2 with MAC Address 20:df:b9:95:30:e0.