Qrotech QRO-402 User manual

AUTOMOTIVE EMISSON ANALYZER
QRO - 402
OPERATING MANUAL

QRO-402
OPERATING MANUAL 2

QRO-402
OPERATING MANUAL
3
Notes for User
To use this analyzer with safety and effectiveness,
please read this manual before usage.
This manual applies to the product model QRO 402(4/5gas analyzer).
1. This manual should be referred with regard to the product design and
safety assurance of the configuration.
2. For the purpose of safe confirmation, this manual should be provided to
the end user at the same time with the supply of the product.
3. Please use only in well ventilated place.
4. This product should not be washed/polished by volatile or toxic
chemical materials like thinner.
5. Please don't use the printer until the printing paper is prepared.
6. If the equipment is wiped with a piece of moistened gauze, dry the
equipment thoroughly before use.
Using the monitor while it is wet may result in an electric shock.
7. Do not clean the terminals or the AC power inlet. Otherwise, deformation
or corrosion of contacts could occur,
which may result in contact failure and/or malfunction of the equipment.
The contents of this manual may be changed without notice for the
purpose of functional improvement.
Copyright © QROTECH CO., LTD.

QRO-402
OPERATING MANUAL 4
Contents
Notes for user ................................................................................................3
Contents .........................................................................................................4
Chapter 1. Quality Guarantee Provision
1 1 Guarantee provision .....................................................................5
1 2 Guarantee claim procedure ............................................................5
Chapter 2. Safety Instruction
2 1 Usage purpose ............................................................................6
2 2 Usage condition ...........................................................................6
2 3 Caution and warning ....................................................................6
Chapter 3. Introduction of QRO 402
3 1 Specification ................................................................................7
3 2/3 Front view and description .......................................................8
3 4 Rear view and description ...........................................................9
3 5 Basic accessory and option .......................................................10
Chapter 4. Installation Method and Notes
5 1 Installation .................................................................................11
5 2 Notes .........................................................................................12
Chapter 5. Fault diagnosis and troubleshooting ........................................13
Chapter 6. Measurement Mode
6 1. Measurement ............................................................................14
6 2. Key functions ............................................................................15
6 3. Leak test ...................................................................................16
6 4. Selection of fuel ........................................................................17
6 5. NOx setup .................................................................................18
6 6. Standard gas calibration..............................................................19

QRO-402
OPERATING MANUAL
5
Chapter 1. Qual ty Guarantee Prov s on
1 1 Guarantee provision
If the product is handled according to this manual but there occurs a failure
within the guaranteed period, it will be repaired free of charge by our company.
However, the compensation from the secondary damage and the following cases
may not be guaranteed and repaired without fee:
(1) A damage or fault, which occurs due to mishandling in use and negligence
in maintenance and keeping.
(2) A damage or fault, which originates from a change or reconstruction.
(3) When the parts and consuming materials that naturally wear out become
damaged and needed to be exchanged.
(4) A damage or fault, which originates from an environmental factor such as
a fire, earthquake, storm and flood, or other natural disasters.
(5) A damage or fault, which occurs as the designated pure part is not used.
(6) A mistaken guarantee claim procedure
(for example, absence of type or serial number).
1 2 Guarantee claim procedure
◈
Warning
This product is not designed for outdoor installation so that
a damage or fault originated from the outdoor installation
may not be guaranteed.
When you issue a claim against this product in accordance with above provision,
please contact the agent where you purchased:
(1) When you get a fault : Please verify the product by referring Chapter 8.
fault diagnosis and troubleshooting.
(2) Still in bad operation : Please request a repair to the agent where you
purchased.
(3) Repair after guaranteed period: After the guaranteed period, the repair cost
will be charged.
(4) Repair within guaranteed period : The guaranteed period is for 12 months
from the purchase and within this period
the product will be repaired in
accordance with our quality
guarantee provision.
(5) For details or questions on the after service, please contact our local agent.
(6) When you contact our local agent, please inform us your product type,
serial number, date of purchasing, and fault conditions in detail.

QRO-402
OPERATING MANUAL 6
Chapter 2. Safety Instruct ons
2 1. Purpose of usage
This analyzer is a equipment to measure the gas emission density of an
automobile enabling to diagnose the automobile status and its preventive
maintenance so that it can provide a function to prevent the air pollution in
advance.
2 2. Usage condition
(1) No emitted/polluted environment.
(2) Less than 1000m in height and less than 85% in relative humidity.
(3) No direct ray of sunlight, vibration and abrupt temperature change.
(4) Well ventilated place.
(5) It should be setup at least 25cm from the ground surface.
2 3. Caution and warning
(1) General safety requirement
◈
Warning
This item includes some critical contents to prevent safety
accident and product damage so that it needs to be read
through and properly understood for correct usage.
① This analyzer should be manipulated only by the trained personnel who well
understood the usage.
② A spot check or periodical check should be executed in accordance with this
manual prior to a measurement.
③ The probe should be installed in a place where not affected by a wind.
④ If there occurs a unusual case during operation, please stop the operation and
contact us for its inspection and verification.
(2) Warning
① This analyzer is designed for the use of AC110V only or AC220V only. Please
verify the power sources prior to the usage.
② The probe is so hot by emitted gas. Therefore, you need to pay high attention
not to be burned during when you insert or remove.
③ During the analysis, please do not stay long in the place to which the gas is
being emitted.
④ The emitted gas normally includes the CO, which may induce a fatal damage
to a human body, so that it must be used only in well ventilated place .

QRO-402
OPERATING MANUAL
7
Chapter 3. Introduct on of QRO-402
3 1 Specification
QRO-402(4/5GAS)
Measur ng tem
CO, HC, CO2, O2, λ(air surplus rate), AFR,
NOX (optional)
Measur ng method
CO, HC, CO2 : NDIR Method
O2, NOx : Electrochemical Cell
Measur ng range
CO
0.00 ~ 9.99%
HC
0 ~ 9999 ppm
Resolut on 0.01% 1 ppm
D splay 4 digit 7segment LED 4 digit 7segment LED
Measur ng range
CO2
0.0 ~ 20.0%
O2
0.00 ~ 25.00 %
Resolut on 0.1% 0.01 %
D splay 4 digit 7segment LED
4 digit 7segment LED
Measur ng range
λ
0 ~ 2.000
NOx
(optional)
0~5000ppm
Resolut on 0.001 1 ppm
D splay 4 digit 7segment LED 4 digit 7segment LED
Repeatab l ty Less than ±2% FS
Response t me Within 10 seconds (more than 90%)
Warm ng up t me About 2 ~ 8 minutes
Sample collect ng quant ty 4 ~ 6 L/min
Power AC110V only or AC220V only ±10%, 50/60Hz
Power consumpt on About 50 W
Operat on temperature 0℃ ~ 40℃
D mens ons 420 (W) × 298 (D) × 180 (H) mm
We ght About 4.5 kg
Bas c accessar es
Probe, Probe hose, Spare fuse, Leak test cap,
Spare filter, Operation manual, Power cord,
Opt ons
RS232 Communication cable, Printer, Printer paper

QRO-402
OPERATING MANUAL 8
3 2/3. Front view and description
3 3 1 CO display window
This displays the CO density and program proceeding status.
3 3 2 HC display window
This displays the HC density and program proceeding status.
3 3 3 CO2 display window
This displays the CO2 density and program proceeding status.
3 3 4 O2 display window
This displays the O2 density and program proceeding status.
3 3 5 λ display window
This displays the λ(air over surplus rate) value and program
proceeding status.
3 3 6 AFR/NOx display window
This displays the AFR, NOx, and program proceeding status.
3 3 7
KEY
PRINT
Used in time of holding or printing.
3 3 8 MENU KEY
Used in choosing a supplementary function.
3 3 9 ▼ KEY
ZERO
Used in time of correcting the datum point or moving a figure or digit.
3 3 10
▲
KEY
PURGE
Used in time of doing a purge or executing a value increase.
3 3 11
ENTER KEY
Used in time of measuring or approving a supplementary function.
3 3 12
ESC KEY
Used in time of returning to ready mode.
3 3 13 Internal printer case: The print paper comes out this case.
QRO
402

QRO-402
OPERATING MANUAL
9
3 4 Rear view and description
3 4 1 CAL(Calibration)
This is a gas inflow gate used in time of standard gas adjustment.
3 4 2 INLET
This is a measuring inlet where one end of the probe mounted into this
inlet in time of gas emission measurement.
3 4 3 OUTLET
This is an emitting outlet where the gas produced in the time of
measuring the emitted gas (4GAS Analyzer) and water to correct the
gas is outcome.
3 4 4 MAIN FILTER
This condenses the vapor contained in the automobile emitting gas so
that it prevents other materials from incoming to inside the analyzer at
the same time with the water and measuring gas.
3 4 5 DUST FILTER
This prevents fine dusts and materials from incoming inside the
analyzer in the time of measuring.
3 4 6 ZERO FILTER
This is a activate charcoal filter to purify the analyzer cell in the time of
correcting the zero point.
3 4 7 EXTRA OUTLET
This is a emitting outlet where the emitting gas and standard gas
is outcome in the time of adding the NOx.
3 4 8 OPTION
This is a terminal to be directly connected with a normal PC printer.
3 4 9 RS232 PORT
This is a communication terminal through which PC can operate the
program.
3 4 10 POWER SWITCH
A power on/off terminal of this analyzer.
3 4 11 FUSE BOX
A fuse terminal which will prevent a damage from external voltage
overflow.
3 4 12 POWER SOCKET
3 4 13 FAN

QRO-402
OPERATING MANUAL 10
3 5 Basic accessory and option
3 5 1 Basic accessory
3 5 2 Option

QRO-402
OPERATING MANUAL
11
Chapter 4. Installat on Methods and Notes
4 1 Installation
4 1 1 Fit end of the probe hose into the measuring probe and the other end of
the hose into the gas inlet in the rear of the analyzer. If the fitting
condition is not good and the air comes into flow from outside, it may
yield an incorrect measured value. Therefore, please carefully verify the
fitting condition before use.
4 1 2 Turn off the power switch and then connect the power cable to the power
socket located in the rear of the analyzer
4 1 3 Verify the fitting conditions of measuring probe filter and various filters
located in the rear of the analyzer.
4 1 4 Verify again the connection status of the analyzer and then turn on the
power switch.
◈
Warning
This analyzer supports AC110V only or AC220V only.
(Please confirm the power source to use.)

QRO-402
OPERATING MANUAL 12
4 2 Notes
▶
▶▶
▶ This analyzer is operated with AC110V only or AC220V only. Please verify the
power source before use. (Note that you can not change power source which
is fixed upon supplying this analyzer.)
▶
▶▶
▶ The following factors should be considered to properly locate the analyzer
body :
▣ To be setup in a place of no direct light rays, humidity, vibration and
abrupt temperature change.
▣ To be setup in a indoor place where no emitted gas inflows.
▣ To be setup in a height higher than 25cm from the ground.
▶
▶▶
▶ The analyzer should not be moved during the operation. It may cause an
incorrectness in the measured value.
▶
▶▶
▶ The probe should be located in a place where not affected by the wind.
▶
▶▶
▶ The probe may be so hot during the operation so that it should be
carefully handled not to be burned in insertion or removal.
▶
▶▶
▶ It needs to be noted that you should not stay in the gas emitting place during
the operation.
▶
▶▶
▶ The analyzer should be used in a well ventilated place only because the
emitting gas contains the CO and it can cause a fatal damage to a human
body.
▶
▶▶
▶ This analyzer is Type approved in accordance with the related government
laws so that it is extremely prohibited to disassemble, change, or rebuild the
analyzer and also if you disassemble the NDIR Module, you may not be
guaranteed for the repair.
* O2/NOx sensor's l fe span : about 1~2 years.
* Standard gas cal brat on's cycle : every about 6 ~ 12 months.

QRO-402
OPERATING MANUAL
13
Chapter 5. Fault d agnos s and troubleshoot ng
Fault
Verification
Troubleshooting
Unable to power switch ON
Is the power cord properly
connected? Connect the power cord.
Is the fuse cut?
Replace the fuse and check the
cause of power overflow.
Unable to measure
(Measuring value stays in "0"
and does not move)
Do you press the
measurement key?
Press the measurement key in
the rdy mode.
Do you properly connect the
probe to the analyzer?
Verify the connection status
between the probe and hose
(gas inlet).
Is any of probe, hose or filter
blocked?
Please check the main filter
housing's O ring.
Especially this could openly
happen in the winter due to
water icing. Verify the probe filter,
hoses, and filters.
λ or O2 values is high/ NOx
value is low.
Check the O2 sensor or leak.
Check the NOx sensor
(with NOx gas).
Replace the O2/NOx sensor
(Life span: 1~2 years).
Flow ERR
(Flow error)
Is any of probe, hose or filter
blocked?
Please check the main filter
housing's nipple is blocked.
Verify the probes, hoses, and filters.
Zero ERR
(Zero Calibration error) Is remaining gas in the analyzer?
Press the Purge key to clean the inside
of QRO 402 with a clean air for about
2 3minute.
Leak Fail
(Gas leakage fault)
Are the probe and hose
properly connected?
Verify again the connection
status of probes, hoses, and
filters.
Screen stop
(unable to press Key)
Has the analyzer seriously
impacted? Turn off the power and reboot.
Prt Err
(Printer fault)
Is the connection cord inside
the analyzer is disconnected
or badly connected?
Disassemble the case of the
analyzer and then re connect
the printer connection cord.
No printer paper output
Is it lack of printer paper?
Open the printer case and then
exchange the paper.
Has the paper hung up in the
printer?
Open the printer case and then
refill the paper.

QRO-402
OPERATING MANUAL 14
Chapter 6. Measurement Mode
6 1. Measurement
① Place the probe in the clean air to perform the [ Zero calibration ].
② Push the probe deep into the exhaust outlet of the vehicle and measure exhaust gas by
pressing ENTER key.
ESC ENTER



ZERO



PURGE
PRINT MENU
Power ON
In t al zat on Process (10
seconds)
Self D agnos s
Wa
rm ng up (between 2
and 8 m nutes)
STAND
-
BY
Measurement
Ready State
Automatic Processing
Processing
Processing
Zero Cal brat on
(20 seconds)

QRO-402
OPERATING MANUAL
15
※
※※
※ The measurement operates for 30 minutes and the pump is automatically stopped by the
activation of the power saving mode. Press ENTER key again to measure the exhaust gas
for more than 30 minutes.
③ Pull the probe out of the exhaust outlet of the vehicle. Then clean the inside of QRO 402
with the clean air by pressing the PURGE key until the measurement values drop to 0.
④ If all the measurements fall close to 0, press ESC key to maintain QRO 402 in a standby
mode.
⑤ Press the ZERO key for a series of measurement. Then, repeat ②, ③, and ④.
※
※※
※ PRINT key operates only in measurement mode.
(Press the print key 1(hold)/2(car number)/3(printing) times)
6 2. Key functions
Key
Contents
MENU
Use the key to perform the leak test, the PEP value indication, the p
rogram
version indication, and the standard gas calibration. Press the [MENU] key and
QRO 402 will operate as shown below.
Leak test → Remaining HC test → Used fuel → HCV / OCV
→ PEF value indication → Time set up → NOX measurement set up
→ Standard gas → Print set (density)
Press the [MENU] key. QRO 402 will operate according to the contents ▼
,
▲ , ESC , ENTER printed on the upper side of each key.
▼ Use this key to change the setup positions.
PRINT When you stop or print measurement value , use it
▲ Use this key to increase the setup values.
ESC Use this key to end the selection mode and change into a measurement mode.
ENTER
Use this key to select the present mode indicated, or to execute the number
substituted.

QRO-402
OPERATING MANUAL 16
6 3. Leak test
A function that looks for any possible air leakage from the sample cell in order to indicate the exact result.
① Press the MENU key once in the stand by mode to select the Leak Test mode.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO
② If the message ‘Leak test’ is indicated on the indication window as shown above, mount the
leak test cap on the front side of the probe.
③ Press ENTER key. The pump operates and the count values decrease by 1 from 20
during the 20 second leak test.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO
④ If the test turns out normal without any leak after 20 seconds, a message is indicated
as ‘PASS”. If the leak is identified, the message is indicated as ‘FAIL’.

QRO-402
OPERATING MANUAL
17
6 4. Selection of fuel
This is the function that selects fuel for testing vehicle. It is used to calculate air surplus rate (λ)
and AFR. This analyzer can select the fuel such Gasoline, LPG, CNG, and Alcohol.
GASOLIN  LPG  CNG  ALCOHOL
① Press MENU key three times from standby mode.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO
② Selected fuel is indicated as in the above. Use ▼ , ▲ keys until it indicates the fuel
to select.
③ Press ENTER key to setup the selected fuel.
④ For Example, If the “LPG” fuel is selected, the window indicates as shown in the below.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO

QRO-402
OPERATING MANUAL 18
6 5. NOX setup
It is a function selecting where to attach NOX sensor.
① Press MENU key for eight times in standby mode.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO
(When it is set up to NOX display)
② ▲ key changes display to YES or to NO.
③ Select YES for NOX display mode, NO for non NOX display mode, then press ENTER
※
※※
※ “A” s attached as shown below n the AFR(A r/fuel rate) d splay mode and d sappears
n the NOx d splay mode. NOx/AFR mode s changed as the ENTERkey s pressed n
measurement mode.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO
Example of exhaust gas measurement display

QRO-402
OPERATING MANUAL
19
6 6. Standard gas calibration
① Set this analyzer in [STAND BY] mode.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO
☞ Precaut ons
 Read the manual and adjust the standard gas n the follow ng order.
 Check f all the preparatory mater als are ready.
 Check f the gas pressure s controlled to the requ rements.
 Th s analyzer s des gned to prevent QRO-402 from be ng wrongly controlled
due to poor man pulat on of unsk lled person. However, s nce the standard gas
cal brat on severely affects the accuracy of analyzer, the operator must fully
understand the contents of th s operat on manual and observe the spec f ed
procedures.

Note

 QRO-402 s converted nto the standby mode unless you convert nto other
modes w th n 30 seconds dur ng the standard gas cal brat on.
 If you dec de that the standard gas cal brat on s n the wrong process, press
[ESC] key to restart the process.

QRO-402
OPERATING MANUAL 20
② Press MENU key nine times.
ESC ENTER



ZERO



PURGE
PRINT MENU
③ The following message is indicated. QRO 402 operates according to the ▼ ,
▲ , ESC , ENTER printed on the upper part of each key.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO
④ Press ENTER key in the above state. The [Zero calibration] starts automatically for
once.
CO HC
% ppm
CO2 O2
% %
λ
AFR/NO