Atal AT 505 User manual

USER’S MANUAL
Gas Analyser AT 505
software version 1.11 onwards
Last updated: April 26. 2023
The right is reserved to change the Manual
ATAL s.r.o., Lesní 47, 390 01 Tábor - Horky, Czech Republic
Phone: [phone]
e-mail: [e-mail]; web: http://www.atal.cz
GAS_MANUAL_EN.DOC

Gas-manual-en.docx — 2 —
CONTENTS
CHAP. I - GAS ANALYSER ....................................................................................................................................................................................................................................................3
1. INTRODUCTION ...................................................................................................................................................................................................................................................3
2. SAFETY PRECAUTIONS ......................................................................................................................................................................................................................................3
3. WASTE DISPOSAL ...............................................................................................................................................................................................................................................3
4. DESCRIPTION OF APPARATUS ..........................................................................................................................................................................................................................3
4.1 FRONT PANEL......................................................................................................................................................................................................................................................4
4.2 BACK PANEL ........................................................................................................................................................................................................................................................5
5. CONSTRUCTION OF APPARATUS .....................................................................................................................................................................................................................5
5.1 MECHANICAL PART.............................................................................................................................................................................................................................................5
5.2 ELECTRONIC PART .............................................................................................................................................................................................................................................5
5.3 PNEUMATIC PART ...............................................................................................................................................................................................................................................5
6. MEASURING PRINCIPLE .....................................................................................................................................................................................................................................6
7. SOFTWARE INSTALLATION ................................................................................................................................................................................................................................7
7.1 DESCRIPTION OF INSTALLATION CD................................................................................................................................................................................................................7
7.2 INSTALLATION AND UNINSTALLATION (REMOVAL) OF THE GAS ANALYSER PROGRAM ..........................................................................................................................7
7.2.1 FIRST INSTALLATION ..........................................................................................................................................................................................................................................7
7.2.2 UNINSTALLATION (REMOVAL) OF THE GAS ANALYSER PROGRAM .............................................................................................................................................................9
8. PROGRAM CONFIGURATION ...........................................................................................................................................................................................................................11
8.1 SCREENS OF CONFIGURATION.......................................................................................................................................................................................................................11
8.1.1 CONFIGURATION SCREEN – STATION ...........................................................................................................................................................................................................11
8.1.2 CONFIGURATION SCREEN – GAS ANALYSER ...............................................................................................................................................................................................11
8.1.3 CONFIGURATION SCREEN – SPECIAL ............................................................................................................................................................................................................12
8.1.4 CONFIGURATION SCREEN – TIME ..................................................................................................................................................................................................................12
8.1.5 CONFIGURATION SCREEN – INTERFACE.......................................................................................................................................................................................................12
8.1.6 PROGRAM CONFIGURATION WIZARD ............................................................................................................................................................................................................13
8.1.7 DETECTION OF COMMUNICATION PORTS .....................................................................................................................................................................................................15
8.2 PROGRAM CONTROL........................................................................................................................................................................................................................................16
9. DEVICE SWITCH-ON AND SOFTWARE START-UP .........................................................................................................................................................................................16
9.1 CONNECTION OF AT 505 TO THE PERSONAL COMPUTER (MFS LIGHT) ....................................................................................................................................................17
9.2 PROGRAM START-UP .......................................................................................................................................................................................................................................19
9.3 DEVICE ACTIVITIES AFTER PROGRAM START-UP ........................................................................................................................................................................................19
9.3.1 DEVICE INITIALISATION AND OPTICAL BENCH HEAT-UP .............................................................................................................................................................................19
9.3.2 LEAKAGE TEST ..................................................................................................................................................................................................................................................19
9.3.3 OPTICAL BENCH RESET ...................................................................................................................................................................................................................................20
10. MAIN SCREEN DESCRIPTION...........................................................................................................................................................................................................................21
10.1 GAS ANALYSER ONLY AVAILABLE WITH MULTI-DIAG SCOPE .....................................................................................................................................................................21
10.2 GAS ANALYSER - IS NOT AVAILABLE MULTI-DIAG SCOPE...........................................................................................................................................................................22
11. INITIAL ANALYSER SETUP................................................................................................................................................................................................................................22
12. ENGINE SPEED MEASURING ...........................................................................................................................................................................................................................23
12.1 UNIVERSAL SPEED SENSOR ...........................................................................................................................................................................................................................23
12.1.1 MEASUREMENT PRINCIPLE .............................................................................................................................................................................................................................24
12.1.2 RECOMMENDATIONS........................................................................................................................................................................................................................................24
12.2 MULTI-DIAG MOTORTESTER............................................................................................................................................................................................................................24
12.3 MULTI-DIAG MINITESTER .................................................................................................................................................................................................................................24
12.4 MULTI-DIAG ........................................................................................................................................................................................................................................................24
13. OIL TEMPERATURE MEASURING ....................................................................................................................................................................................................................24
13.1 OIL TEMPERATURE SENSOR ...........................................................................................................................................................................................................................25
13.2 UNIVERSAL SPEED SENSOR ...........................................................................................................................................................................................................................25
13.3 MULTI-DIAG MOTORTESTER............................................................................................................................................................................................................................25
13.4 MULTI-DIAG MINITESTER .................................................................................................................................................................................................................................25
13.5 MULTI-DIAG ........................................................................................................................................................................................................................................................25
14. DWELL ANGLE MEASURING.............................................................................................................................................................................................................................25
15. IGNITION ADVANCE MEASURING ....................................................................................................................................................................................................................26
16. PRINTING VALUES.............................................................................................................................................................................................................................................26
17. EMISSION TEST .................................................................................................................................................................................................................................................27
18. CHANGE OF THE COMPANY LOGO IN THE PROTOCOL ...............................................................................................................................................................................27
19. INFORMATION WITH F1 ....................................................................................................................................................................................................................................28
20. RECORD OF MEASURED DATA FOR POTENTIAL CHECK.............................................................................................................................................................................29
21. SWITCHOVER TO ANOTHER APPLICATION....................................................................................................................................................................................................29
22. STAND BY MODE ...............................................................................................................................................................................................................................................29
23. ERROR ALERTS BY THE ANALYSER ...............................................................................................................................................................................................................30
24. MAINTENANCE...................................................................................................................................................................................................................................................31
24.1 MEASURES TO AVOID WATER CONDENSATION IN OPTICAL BENCH.........................................................................................................................................................31
24.2 COARSE FILTER INSPECTION AND CLEANING..............................................................................................................................................................................................32
24.3 FINE FILTER INSPECTION AND RENEWAL .....................................................................................................................................................................................................33
24.4 OXYGEN SENSOR CHECK ................................................................................................................................................................................................................................33
25. TECHNICAL SPECIFICATION ............................................................................................................................................................................................................................33
25.1 FUNCTION PROPERTIES ..................................................................................................................................................................................................................................33
25.2 GENERAL INFORMATION..................................................................................................................................................................................................................................34
25.3 HOST COMPUTER REQUIREMENTS................................................................................................................................................................................................................34
25.4 ENVIRONMENTAL CONDITIONS.......................................................................................................................................................................................................................34
25.5 STORAGE AND TRANSPORT............................................................................................................................................................................................................................35
26. ASSEMBLY .........................................................................................................................................................................................................................................................35
26.1 GAS ANALYSER .................................................................................................................................................................................................................................................35
26.2 GAS ANALYSER ACCESSORIES ......................................................................................................................................................................................................................35
27. CALIBRATION AND SERVICE............................................................................................................................................................................................................................35
CHAP. II - INSTALLATION OF A NEW HARDWARE DEVICE (HW) ...................................................................................................................................................................................36
1. INSTALLATION OF ATAL DEVICES – GENERAL..............................................................................................................................................................................................36
2. INSTALLATION OF THE USB-RS232 CONVERTER .........................................................................................................................................................................................36
2.1 INSTALLATION OF DRIVERS FOR THE USB-RS 232 CONVERTER ...............................................................................................................................................................36
2.2 ADAPTER USB-RS232 FINAL INSTALLATION..................................................................................................................................................................................................38
CHAP. III - REMOTE CONTROL..........................................................................................................................................................................................................................................40
1. INTRODUCTION .................................................................................................................................................................................................................................................40
2. INSTALLATION AND UNINSTALLATION (REMOVAL) OF REMOTE CONTROL PROGRAM ..........................................................................................................................40
2.1 INSTALLATION OF REMOTE CONTROL...........................................................................................................................................................................................................40
2.2 UNINSTALLATION (REMOVAL) OF THE REMOTE CONTROL PROGRAM .....................................................................................................................................................42
2.3 INSTALLATION OF THE REMOTE CONTROL RECEIVER ...............................................................................................................................................................................43
2.3.1 INSTALLATION OF DRIVERS FOR THE RECEIVER.........................................................................................................................................................................................44
2.3.2 RC RECEIVER FINAL INSTALLATION ...............................................................................................................................................................................................................45
3. STARTING REMOTE CONTROL PROGRAM.....................................................................................................................................................................................................47
3.1 REMOTE CONTROL CONFIGURATION ............................................................................................................................................................................................................47
3.1.1 SETTING THE COMMUNICATION PORT OF THE REMOTE CONTROL RECEIVER ......................................................................................................................................47
3.1.2 SETTING THE ADDRESS OF THE REMOTE CONTROL TRANSMITTER........................................................................................................................................................49
3.2 REMOTE CONTROL TESTING...........................................................................................................................................................................................................................49
4. INFORMATION ABOUT SOFTWARE VERSION ................................................................................................................................................................................................50

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Chap. I - Gas Analyser
1. INTRODUCTION
•The gas analyser is a PC based four (plus optional NOx) gas analyser.
•The gas analyser is intended for the maintenance and inspection of spark ignition engines.
•Gas data is transmitted from the gas analyser to the PC (or Laptop) for processing and printing.
•The gas analyser is part of the modular Multi-Diag system.
2. SAFETY PRECAUTIONS
a) The apparatus meets requirements for operation according to the EN 61010-1.
b) The device shall be powered using only the power supply provided.
c) Removing covers from the apparatus is not allowed, as this would cause an electric shock risk.
d) The device must be operated higher than the withdrawal probe inlet due to the risk of the analyser
becoming filled with a large quantity of water, coming from condensate in the exhaust system.
e) The device is intended for operation in the vertical position only. It should in no case be tilted
even when switched off. The reason is the dangeur that moisture condensed within the rough filter F1
can flood the sensitive elements within the analyser.
f) For emission control working sites and for service working sites, relevant safety regulations should be
applied. The operator must organise appropriate safety training courses for service staff of the measuring
apparatus. This can include training for working on vehicles while the engine is running.
Therefore, safety precautions must be observed according to the manufacturers of the car and of the
engine, that are valid for testing the engine while it is running. Sufficient ventilation must be provided for
exhaust fumes and outlet gases from the analyser.
g) The device should be protected against ambient water in any form (rain, sprayed water, etc.)
3. WASTE DISPOSAL
A NOTE ABOUT RECYCLING:
This product's packaging materials are recyclable and can be reused. Please dispose of
any materials in accordance with the local recycling regulations.
When discarding the unit, comply with local rules or regulations.
Batteries should never be thrown away or incinerated, but disposed of in accordance with
the local regulations concerning chemical waste.
This product and the accessories packed to
gether constitute the applicable product
according to the WEEE directive, except batteries.
4. DESCRIPTION OF APPARATUS
The exhaust gas analyser is intended for the testing of exhaust gas emissions from spark ignition engines
The AT505 gas analyser is approved for Car and Light Commercial Vehicle Testing. This includes vehicles in the
following classes:
•Class III - 3 wheeled vehicles not more than 450 kg unladen weight (excluding motor bicycles with side
cars).
•Class IV - Cars, including 3 wheeled vehicles more than 450 kg unladen weight, Taxis, Minibuses and
Ambulances up to 12 passenger seats, Goods Vehicles not exceeding to 3000 kg Design Gross Weight
(DGW), Motor Caravans and Dual Purpose Vehicles.
•Class VII - Goods Vehicles over 3000 kg up to and including 3500 kg DGW. If a vehicle is presented
with a manufacturer’s plate and a ‘Ministry plate’ the weights to be used are those on the ‘Ministry
plate’.
•More detailed definitions are given in the MoT Testing Guide provided by the Vehicle & Operator
Services Agency (VOSA).

Chap. I - Gas Analyser
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The gas analyser is a four-part (optional five-part) analyser of exhaust gases, to be used for measurement and
adjustment of petrol, LPG, and CNG engines, and for controlling emissions of those engines according to relevant
national regulations. It can measure HC, CO, CO2, O2, and NOXconcentrations, and calculate COcor and the
coefficient of air redundancy λfrom those values. Furthermore, it measures engine speed and oil temperature for
use during statutory MoT test procedures. The measured data can be printed by the printer as partial
measurements or as an MoT test certificate.
Mechanical construction is described in Chap. I - 5.
4.1 FRONT PANEL
Fig. 1 – View of the front panel of the Gas Analyser
1 - Status LED:
OFF = the power supply is not connected, or the Gas Analyser AT505 software on the PC is not running
and communicating with the Analyser.
Red = the power supply is connected, but the communication cable is not connected to the PC or the PC
is not switched on
Orange = the analyser is ON, but inactive, heating up may be in process or it may be indicating a fault
Green = the analyser is ready to use
2 - Coarse filter (F1)
3 - Nitrogen sensor (NOx) (optional)
4 - Fine filter (F2)
5 - Oxygen sensor (O2)
6 - Exhaust gas outlet
7 - Condensate outlet
8 - Calibration gas inlet
9 - Exhaust gas intake

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4.2 BACK PANEL
1 - Connector (Jack) for the power supply plug
2 - Connector for the computer serial cable
Fig. 2 – View of the back panel of the Gas Analyser
5. CONSTRUCTION OF APPARATUS
5.1 MECHANICAL PART
The device frame is fabricated from steel with a zinc finish, and is coated with a two-compound acrylic paint. The
device case is also fabricated from steel with a zinc protective finish, and sprayed with a wear resistant powder
coated paint. The exhaust probe is made of stainless-steel flexible hose.
5.2 ELECTRONIC PART
The internal electronic system and all clamps, connectors and sensors accessible from the outside are
galvanically isolated, any voltages on them do not exceeding safe levels. The electronics consist of a printed
circuit board, the electronic system of the optical testing bench, and the fan. In the case of the extended version
including engine speed and engine temperature measurement, an additional circuit board is included for these
sensors.
5.3 PNEUMATIC PART
This consists of a double membrane pump with two pumping channels. The P1 channel pumps the exhaust gas
to be measured from the exhaust probe to the optical bench and oxygen sensor (or nitrogen sensor NOx), and
the P2 channel continually empties condensate from the rough filter F1.
The solenoid enables zeroing of the measuring apparatus by switching from the exhaust probe to the zero setting
inlet (which draws in surrounding air). The zero setting inlet includes an active carbon filter F4, which decreases
hydrocarbons which may be present in the surrounding air.
The gas sample measured is subject to double filtration before entry to the optical bench. The first filtration stage
is through a rough filter F1, which is made from sintered bronze grain. The second filtration stage is the fine filter
F2, which is made from paper. Inside the apparatus there is safety filter F3 that protects the solenoid, optics of
the measuring bench, and the oxygen sensor (or nitrogen sensor NOx) in case of incorrect fitting or failure of the
external filters.
The apparatus is also equipped with a calibration inlet CAL, which is used for the connection of the calibration
gas. The pneumatics include a vacuum switch, which is used for indication of decreased flow through the exhaust
probe from taking in water or blockage, this is also used for the probe leakage test.
The device is equipped with automatic compensation for ambient air pressure.

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Fig. 3 – Scheme of pneumatic part
1- Exhaust gas intake
10- Vacuum switch
2- Coarse filter (F1)
11- Condensate pump (P2)
3- Fine filter (F2)
12- Main pump (P1) – measured gas
4- Condensate drain outlet
13- Pressure reduction – inlet of calibration gas with pressure reduction
5- Exhaust gas outlet
14- Check valve
6- Air intake (for zeroing)
15- Optical bench
7- Activated carbon filter (F4)
16- Oxygen sensor (O2)
8- Fine safety filter (F3)
17- Nitrogen sensor NOx (optional)
9- Solenoid
cal- Calibration inlet
6. MEASURING PRINCIPLE
The measuring principle for CO, HC, CO2, O2, and NOXcomplies to the requirements OIML R 99 class 0. In the
case of CO, HC, and CO2, it is through non-disperse light attenuation measuring in an infra-red area (NDIR).
Concentration of the three gases is measured in separate measuring cells. Signals obtained from the detectors
are then compared with a reference signal. Results are compensated for temperature and barometric pressure
changes.
O2 and NOXconcentration measurement is done with electro-chemical sensors. The service life of these sensors
is limited, and depends on the duration and level of concentrations, particularly of HC and Pb (from lead petrol
detergents), which they are exposed to. Normally the service life should be at least six months. The Gas Analyser
automatically monitors the sensors and reports when have require renewal.
A diagram of lambda dependency of individual gas compounds in exhaust gases is shown in Fig. 4. The richness
of the fuel mixture is expressed by air redundancy coefficient λ. This diagram illustrates model emission behaviour
of a non-catalyst engine.

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Fig. 4 – Diagram of dependency of concentrations of individual gas compounds in exhaust gases
(+ rich mixture, - weak mixture)
7. SOFTWARE INSTALLATION
7.1 DESCRIPTION OF INSTALLATION CD
The included CD contains all the necessary software for the use of Gas Analyser system.
Insert the CD in your CD-ROM drive. If the CD does not run automatically, run the autorun.exe program which
you will find on the CD.
7.2 INSTALLATION AND UNINSTALLATION (REMOVAL) OF THE GAS ANALYSER PROGRAM
7.2.1 FIRST INSTALLATION
If you install the program on a computer with Windows 2000 / XP / Vista operation system, log in as system
administrator.
Click on the menu item Gas Analyser – Installation –(see Fig. 5).
Note 1:
If the CD does not run automatically, run the
autorun.exe program which you will find in the root
directory on the CD.
The Gas Analyser program installation is intuitive
–
you should follow the Installation Wizard
displayed on the PC screen.
Note 2:
The default language of the Wizard is English
but it can correspond to your language version
of Windows.
Fig. 5 – Menu for Gas Analyser installation (the picture of version 1.11 is for illustration, your version may be different.)

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The following set of images comes from the installation wizard for the Windows XP operation system. The
Windows Vista wizard is similar:
Fig.
6 – The installation can be interrupted at any time during the setup
by clicking on
“Cancel”
Fig.
7 – Click “Next” to proceed with the installation

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The installation may take several seconds. Click on
“Finish” to complete the installation.
The installation of drivers for the RS232-USB
converter starts after its completion (see Chap. I - 2)
Fig.
8 – Click on "Finish” to complete the installation
7.2.2 UNINSTALLATION (REMOVAL) OF THE GAS ANALYSER PROGRAM
Note:
The default language of the Wizard is English but it can correspond to your language version of Windows.
To uninstall the program open the installation dialog box. There are two ways of doing this:
a) Click on Add or Remove Programs in the Control Panel. Then click on “Remove” (Fig. 9). Confirm
this choice in the displayed dialog box (see Fig. 10) and the program will be removed promptly and without
further warning.
Note:
Open the Add or Remove Programs by clicking Start, Control Panel and double-clicking Add or Remove
Programs.

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Fig.
9 – Removing Gas Analyser program by selecting the Add or
Remove Programs in Control Panel
Fig.
10 – Confirm that you really want to remove the program
b) Click on the menu item Gas Analyser – Installation –see Fig. 5 (Autorun.exe on the installation CD
must be launched). Then select "Remove” (Fig. 11). Confirm your choice in the displayed dialog box (Fig. 12) and
the Installation Wizard (Fig. 13) will immediately remove the program.
Fig.
11 – After you have clicked on “Remove” and confirmed your
choice, the removal of the program will start
Fig.
12 – To proceed with the removal confirm that you really wish to
remove the program
Fig.
13 – Removal may take several seconds. Click on “Finish” to complete the removal