A&T Qulon-12ns User manual

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Thank you for purchasing. Your lead acid battery
capacity indicator Qulon-12ns is designed for fast bat-
tery capacity estimation. With the help of the device,
you can test ne or used 12-volt lead acid batteries.
This ill help you to condemn defective batteries or bat-
teries that have lost capacity. With Qulon-12ns, you ill
al ays keep your battery systems in perfect orking or-
der.
Qulon-12ns is designed for years of reliable
ork and does not need any service.
Qulon-12ns is designed for testing batteries
ithout disconnecting them from the charger or rectifier.
Please read this manual! It contains significant
instructions for using battery capacity indicator. Follo -
ing this manual, you ill keep device orking and your
batteries ready to take critical loads.
Keep this manual! In contains important safety
precautions and arranty information.
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Contents
Introduction 4
1.Safety precautions 5
2.General description 6
3.Battery capacity estimation 7
3.1 What is battery capacity 7
3.1.1. Dependence bet een battery capacity and dis-
charge current 7
3.1.2. Battery capacity and battery state of charge 8
3.1.3. Temperature dependencies 8
3.1.4. Ne batteries 9
3.2. Battery capacity estimation ith Qulon-12ns 9
3.2.1. Device placement 9
3.2.2. Battery preparation 10
3.2.3. Connection to a battery 10
3.2.4. Battery state of charge 11
3.2.5. Battery capacity estimation 12
3.2.6 Battery capacity estimation ithout
disconnecting it from the charger (rectifier) 13
3.3. Qulon’s screen during battery capacity estimation14
3.3.1. Screen under “save by default” mode 14
3.3.2. Screen under “save by command” mode 16
4. Alarm messages 17
5. Memory and main menu 19
5.1. Memory organisation 19
5.2. T o save modes 20
5.3. Main menu 21
5.3.1. Close group 22
5.3.2. Records 23
5.3.3. Clear memory 24
5.3.4. Options 25
6. Adjusting Qulon 25

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6.1. Options menu 26
6.2. Save mode 27
6.2.1. Save by default 27
6.2.2. Save by command 27
6.3. Calibrate (coefficient adjustment) 28
6.4. Date and time 29
6.5. Sound 30
6.6.Language 31
7. Replacing clock battery 31
8. Calibrating Qulon (coefficient determination) 32
8.1. Coefficient from the producer’s site 34
8.2. Measured discharge method 34
8.3. Method of average 36
8.4. Method of maximum 37
8.5. Method of battery history 38
9 Appendix: test cable checking 39
10. Specifications 40
Warranty 41
Warranty card 42
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Introduction
The life of lead acid batteries is limited to several
years and hile orking batteries loose capacity. When
the battery capacity becomes unacceptably small, bat-
tery needs to be replaced. It is exceptionally important
to determine correct time of battery replacement. If a
battery is replaced too early – the o ner of a battery
looses money. If a battery is replaced too late, the loss
could be even larger.
Qulon-12ns - lead acid battery capacity indicator
is a device for battery capacity estimation. With Qulon,
one can sort 12-volt batteries by their capacity and re-
ject batteries that have lost capacity.
Memory for keeping test results helps user dur-
ing testing large amount of batteries.
The battery capacity estimation is based on the
dependence bet een battery capacity and battery abil-
ity to conduct electric current. Battery capacity indicator
sends a test pulse to a battery and analyses the battery
ans er. Qulon-12ns utilises the most up-to-date method
of battery capacity estimation taking into account the
multifrequency battery response to test pulses.
Different battery producers use different techno-
logies and battery designs. Therefore, the dependence
bet een test pulse form and value and battery ans er
form and value could be slightly different. That is hy
Qulon-12ns is not a high precision device for capacity
measurement. It estimates battery capacity

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basing on electrical measurement and some algorithm
saved in Qulon’s microprocessor.
Qulon-12ns is calibrated on factory. Using this
calibration, you can estimate the capacity of any 12-volt
lead acid battery. Experienced user can reduce capacity
estimation error by device recalibration basing on the
battery ith kno n capacity.
1. Safety precautions
Unpack Qulon-12ns and check if there are any
transport damages. If any, appeal to your dealer or the
transport company.
Attention! Lead acid battery under test is a
source of possible danger. Battery terminals shorted
ith any metal detail could cause burn or fire. Please
adhere to battery maintenance and service rules.
If battery under test is a part of high voltage bat-
tery system and battery test is conducted ithout bat-
tery disassembly be especially careful. Do not connect
test clamps to several 12-volt batteries connected in
series. If such case, device ill not s itch on. If sum-
mary voltage exceeds 400 volts device could be dam-
aged.
Qulon-12ns is a complicated device. Do not try
to disassemble it. There are no parts that need service
inside. The device should be repaired only by certified
personal.
Attention! Do not use device ith back lid
opened.
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Attention! When using Qulon ithout discon-
nection batteries from the charger (rectifier) observe
safety rules for orking ith electric facilities.
2. General description
There is a LCD display in the center of Qulon’s
front panel. It is used to sho ampere-hour capacity,
battery voltage and additional information: adjustment
coefficient, number of recorded measurements and cur-
rent croup of records. Qulon has memory for recording
results of battery tests. The maximum number of recor-
ded results is 200. User is free to separate recorded
results to as many as 26 groups.
If it is impossible to estimate battery capacity be-
cause of some reasons, alarms are sho n at the dis-
play.
There are t o control buttons on the front panel
to the left of display.
Right panel of Qulon is the place for test cable
connector. Qulon is supplied ith special test cables
that use four- ire (Kelvin) connection. This type of con-
nection is used in order to diminish contact resistance
influence on the device results.
There is a lithium battery providing energy to the
internal clock under the sliding cover on the rear panel
of the device.

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3. Battery capacity estimation
3.1. What is battery capacity
Battery capacity is an electrical charge (quantity
of electricity) that battery can deliver under specified
conditions. Usually battery capacity is expressed in
ampere-hours (A*h or Ah). Capacity equals to discharge
current (in amperes) multiplied by discharge time (in
hours). Battery producers rate nominal battery capacity
for some standard conditions. Usually (but not neces-
sary), these conditions are: 20-hour discharge time,
20oC discharge temperature and 1.75 V final battery
voltage (voltage limit at hich discharge is considered
to be complete).
3.1.1. Dependence between battery capacity
and discharge current
Charge that a battery can deliver depends on the
discharge current (discharge time). If discharge current
gro s (discharge time decreases), the battery capacity
decreases. This dependence is an individual property of
a specific battery. The dependence bet een relative
battery capacity and discharge time for LCL-12V33AP
battery is given in the table belo .
Discharge time,
hours
Relative capacity, %
0,1 37
0,3 48
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Discharge time,
hours
Relative capacity, %
0,7 53
1,9 76
4,2 84
9,2 92
20 100
Qulon-12ns al ays sho s capacity for 20-hour
discharge time. If you discharge your battery during
smaller time, the capacity ill reduce.
3.1.2. attery capacity and battery state of
charge
We need to distinguish capacity and state of
charge. Capacity is the quantity of electricity that a fully
charged battery can deliver. State of charge is a charac-
teristic giving information on the degree to hich the ca-
pacity is filled. For example 33Ah battery can contain 33
A*h if a battery is fully charged and 10 A*h if the battery
charge is not full.
Qulon-12ns estimates capacity of fully charged
battery and can’ be used to determine state of charge.
3.1.3. Temperature dependencies
While testing battery under lo or high tem-
perature, dependence of battery capacity from the tem-
perature should be taken into account. Qulon-12ns al-
ays sho s the capacity that a battery could deliver
during next discharge under the same condition. That is
hy if you get estimated capacity under plus 20oC as

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large as 20 A*h you should not be surprised if the same
battery ill deliver only 10 A*h during discharge under
minus 20oC.
Factory calibration of Qulon-12ns is conducted
for use under room temperature (about 20oC). There-
fore, in order to get most precise results of battery capa-
city estimation, keep batteries under room temperature
before test for the time needed for temperature equal-
ising.
3.1.4. New batteries
The majority of lead acid batteries increase ca-
pacity after their first discharge-charge cycles. That is
hy hile testing absolutely ne batteries (the batteries
that never ere charged or discharged) you could get
estimated capacity less then rated (may be by 10 or 15
%). This is usual – the battery ill increase capacity
after several cycles (or several months under float
charge).
3.2. attery capacity estimation with
Qulon-12ns
3.2.1. Device placement
Qulon-12ns can ork in any position horizontal
or vertical.
To avoid device errors do not use it near the
sources of large electromagnetic noise. .
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3.2.2. attery preparation
Correct estimation of battery capacity can be
achieved for fully charged batteries only. Therefore, the
battery should be fully charged before test.
Normally you need do disconnect battery circuit
before test. If you plan to test battery ithout discon-
necting it from the DC bus, it is recommended to sustain
the battery at a constant charging voltage ithout any
discharges for at least 2 days.
If battery terminals are dirty or oxidized – clean
them.
3.2.3. Connection to a battery
Battery capacity indicator Qulon-12ns is supplied
ith special test cables that use four- ire (Kelvin) con-
nection to a battery. T o halves of one (red or black)
clamp are insulated from each other.
Verify that clamp halves do not have other con-
nection ith each other except battery terminal.
Observe polarity hen connecting to a battery.
Connect red clamp to positive battery terminal and
black clamp to negative terminal. Qulon has reverse po-
larity protection – device ill not s itch on if you mis-
take.
Capacity estimation is correct only in case if
device clamps have secure and reliable connection dir-
ectly to battery terminals. Connect test clamps directly
to battery terminals. Never connect clamps to ires or
nuts that have connection ith the terminal.

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Do not connect clamp to a terminal by touching it ith a
side surface of a clamp.
Fig. 1. Connecting clamp to a battery terminal
If the contact is not good, Qulon sends an appro-
priate message to the screen (see section 4). When
such message appears, disconnect clamps from termin-
als, clean terminals and connect clamps once more.
Attention! Qulon feeds from the battery under
test. To avoid battery discharge disconnect device from
the battery after test.
Attention! When using Qulon ithout discon-
nection batteries from the charger (rectifier) observe
safety rules for orking ith electric facilities.
3.2.4. attery state of charge
Qulon-12ns estimates capacity for fully charged
batteries only. The battery under test should have
voltage not less then 12.6 V.
If a battery is deeply discharged (voltage less the
9 V) – device ill not s itch on.
If a battery is not fully charged (voltage is more
then 9 V and less then 12.6 V), device sho s a mes-
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sage “Voltage lo ” and battery voltage at the screen. In
this case, disconnect clamps from the battery and
charge the battery in full according to the battery manu-
al.
If Qulon is connected to a battery ith voltage
larger then 14 V, a “High voltage” arning and battery
voltage ould be sho n on the screen. In this case ait
for the transition charger to "floating" charge mode or
adjust the charger (rectifier).
If a battery voltage is bet een 12.6 volt and14
volt Qulon sho s a battery voltage on the screen and
begins the process of capacity estimation.
Attention! Qulon feeds from the battery under
test. That is hy the battery voltage sho n on the
screen can differ from the open circuit voltage meas-
ured by multimeter.
3.2.5. attery capacity estimation
If a battery voltage is bet een 12.6 volt and 14
volt Qulon automatically starts battery capacity estima-
tion.
Capacity estimation needs time. The value ap-
pears on the screen after 3 seconds. Please ait until
capacity value appears.
After capacity is estimated, Qulon sho s the
ampere-hour value of the battery and s itches on the
screen light for 10 seconds.
Correct Not correct Not correct

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3.2.6. attery capacity estimation without dis-
connecting it from the DC bus
Charger (rectifier) creates an electrical noise at
battery terminals. Despite the enhanced filtering of the
input signal, in some cases the capacity estimation be-
comes impossible or not very reliable. In this case,
Qulon gives the display the appropriate messages and
sound signals (if included). When the message "noise"
arises it is recommended to repeat the battery capacity
estimation ithout disconnecting clamps from the bat-
tery terminals. If several attempts bring no positive res-
ult, you can try to disconnect clamps from the battery
terminals and connect them back. If this does not help,
the noise level is too high to determine the battery capa-
city ithout disconnecting battery from the charger.
It should also be borne in mind that the charging
and discharge currents affect the conductivity of the bat-
tery and, consequently, on the readings, so it is advis-
able to make the battery capacity estimation at the mo-
ment hen they are small. Not recommended to de-
termine the battery capacity hen the battery is supply-
ing the load, or shortly thereafter, hen it is heavily
charging. Ho ever, the influence of these currents on
the readings is lo and usually does not exceed 5-10%.
Readings obtained on a battery connected to a
charger, as a rule, slightly are higher then the readings
for the same battery ith the open circuit.
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3.3. Qulon’s screen during battery ca-
pacity estimation
If battery capacity estimation succeeds, the ca-
pacity value is sho n on the screen.
This result can be saved in memory. Qulon-12ns
has t o saving regimes (save modes): saving by default
(result is saved immediately after it appears) and saving
by command (one needs to push button for saving). De-
tailed description of both saving options is made in sec-
tion 5.2.
The screen vie is sho n on the follo ing fig-
ures depending on chosen regime.
3.3.1. Screen under “save by default” mode
Figure 2 sho s screen vie for the case hen
“save by default” mode is chosen.
Left part of the screen contains icons describ-
ing button functions.
Menu enter – press upper button to enter menu
(see section 5).
Delete result – after pressing the lo er button
you ill have 3 possibilities:
a) to delete the just made estimation from the
memory and repeat the test automatically;
b) to delete the just made estimation from the
memory ithout repetition;
c) to return to the last screen.
The centre of the screen is occupied by esti-

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mated capacity and battery voltage. If there as not
possible to estimate capacity, the alarm message is
sent to this screen zone (see section 4).
attery capacity – measured in ampere-hours.
attery voltage – measured in volts. If the noise
level is rather high, the “noise” message arrives in this
screen zone.
Right part of the screen (the zone of inversion)
contains additional information.
Fig.2 Screen under “save by default” mode
Coefficient – the multiplier (calibration coeffi-
cient) used to estimate capacity (see section 6.3).
Current group – the group to hich just re-
ceived test result as saved (memory organisation is
described in section 5).
Number inside group – the number of just re-
ceived test result inside current group.
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Memory cells free – total number of test results
that can be saved in memory (not more then 200).
Time – there is time indication at the most right
part of the screen (not sho n in fig.2).
3.3.2. Screen under “save by command” mode
Figure 3 sho s screen vie for the case hen
“save by command” mode is chosen.
When this mode is used, just received test result
is not saved. There is no battery name (group and num-
ber inside group) on the screen. The function of the
lo er button is changed.
Save result – after pressing the lo er button
you ill have 3 possibilities:
Fig. 3 Screen under “save by command” mode
a) to save the just made estimation to the
memory (group name and the battery number is
sho n);
b) to return to the last screen;
c) to initiate the test repetition.
Save result
Coefficient
Menu
enter
Delete result
Battery
voltage
Number
inside group
Memory
cells free
Current
group
Battery
capacity

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4. Alarm messages
Sometimes (mainly if the battery is not properly
prepared for testing or extremely large electrical noise),
Qulon-12ns fails to estimate capacity. If this happens,
alarm message appears on the screen describing the
reason for the fail. If sounds (see section 6.5) are on,
then the message ill be accompanied by beeps.
All alarm messages ith their possible causes
and recommended user actions are listed in the follo -
ing table.
Message Possible cause Recommended actions
Contact Bad contact
bet een any of
test clamps and
battery terminal
Disconnect clamps,
clean terminals and
connect clamps once
more
Capacity
lo
Battery capacity is belo 0.5 Ah, Qulon
can’t estimate it
Capacity
high
Battery capacity is too high (may be larger
then 350 Ah), Qulon can’t estimate it
Voltage
lo
Battery is dis-
charged
Charge battery in full
and try once more
Noise Large noise recommended user ac-
tions are listed under
the table
Voltage
high
Battery voltage is
too high
Disconnect the battery
from the charger
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Message "noise" appears in t o cases:
1. If the noise is high enough to affect the result
of capacity estimation, the estimated capacity is sho n
in the screen and the “noise” message arrives in the
voltage line. In this case, e recommend that you try
again (maybe several times) ithout disconnecting
Qulon from the battery (by pressing the bottom button).
If a result is the same or you get result ithout the
"noise", then you can take it for a normal evaluation of
capacity. Other ise, it is recommended to disconnect
the device from the battery and then repeat the test. If
this does not help, then the noise level is too high for
normal operation. You need to reduce the level of inter-
ference, for example by turning off (or disconnecting)
the charger (rectifier) and repeat the test.
2. If the interference (noise) is so strong that
there is not possible to estimate the battery capacity,
then "noise" message arrives in the screen instead of
the capacity. You should repeat the test, similar to the
above algorithm. The purpose is to obtain the repeated
capacity estimation. If this proves impossible, educe the
level of interference, for example by turning off (or dis-
connecting) the charger (rectifier) and repeat the test.

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5. Memory
While testing batteries Qulon feeds from the bat-
tery under test. While orking ith save data or adjust-
ing device, Qulon could be feed from any battery
(9....15 V) or optional adapter.
5.1. Memory organisation
Battery capacity indicator Qulon-12ns has
memory for 200 test results. For user’s convenience,
test results can be split to groups. Maximum number of
groups is 26, each group is identified ith a letter of Lat-
in alphabet – from A to Z. A user arbitrarily manages the
quantity of results inside group.
Each test result recorded is identified ith a
name that consists of a group name and a number in-
side group. If the hole memory ere empty, the first
test result recorded ould be named A-1. Next test res-
ult recorded ill have a name A-2 and so on. User can
close current group at any time. In this case, the next
test result recorded ill be the first in the next group,
hich ould be named in the alphabet order (e.g. B-1).
The follo ing memory operations are possible.
A) Saving of test result just received (“save by
command” mode);
B) Erasing of test result just saved (“save by de-
fault” mode);
C) Closing current group (next group opens
automatically), if current group is not “Z”;
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D) Erasing all saved test results from memory.
The follo ing memory operations are im-
possible.
A) Saving test result to arbitrary chosen group or
arbitrary chosen number in the current group;
B) Erasing of part of saved test results from
memory;
C) Recording test result to a closed group;
D) Opening closed group.
All memory operations are made ith the help of
main menu.
5.2. Two save modes
Qulon-12ns has t o save modes: “save by de-
fault” and “save by command”.
Under “save by default” mode just received test
result is saved automatically. It can be erased by press-
ing lo er button.
Under “save by command” mode just received
test result is not saved automatically. It can be saved by
pressing lo er button.
User can choose save mode ith the help of op-
tions menu. Chosen mode is valid for next tests until it
is changed.
Under both modes saving is performed only if:
A. Battery capacity estimation as successful or
B. Qulon sent one of messages: “capacity lo ”,
”capacity high”, ”voltage lo ”, and “voltage high”.

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If other messages appear, test result is not
saved.
In “A” case (see above), the follo ing informa-
tion is saved: estimated capacity, calibration coefficient
(for current test), battery voltage, group name and num-
ber inside group, test date and time. If rather large noise
can make capacity estimation not reliable, the estimated
capacity is accompanied ith “noise” message.
In “B” case, the appropriate message is saved
instead of estimated capacity.
If there are 200 test results saved in memory, a
message “memory full” is displayed. After this message,
saving is impossible. During next test, the number of
free cells in memory in the right bottom corner of the
screen is “0”. User should clean all memory (see sec-
tion 5.3.3) in order to start saving test results again.
5.3. Main menu
After the battery capacity as estimated or alarm
message sho n, the user can come into the main menu
by pressing the upper button.
If “save by default” mode is on user ill be ad-
vised to erase just received test result. The user can
agree (and the result ill be erased) or disagree (and
the result ill be kept in memory) before entering menu.
Main menu has four items. The vie of main
menu is sho n on figure 4.
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Fig. . Main menu
Pressing lo er button brings cursor to next line.
Pressing upper button enters the menu item specified
by cursor.
First three menu items serve for memory opera-
tions, the last one – for device adjustment.
To exit menu – disconnect test clumps from the
battery terminals - all adjustments are saved automatic-
ally.
5.3.1. Close group
This menu item is used for closing the current
group of test results.
After entering item, a question “close group?” ill
appear. If you ans er “yes” by pressing upper button –
you ill see the message “Group X closed”. After it
device goes to the main menu. If you ans er “no” by
Enter menu
item
Cursor
movement
Cursor

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pressing lo er button the device goes to main menu
ithout closing group.
If you try to close the last group (Z), you ill see
a message “no groups available”. All test results saved
after it ill be in Z group.
If you try to close the empty group, you ill see
the appropriate message. The empty group cannot be
closed. You can not undo the close group operation.
You can not save data to the closed group.
5.3.2. Records
This menu item is used for vie ing saved test
results.
Fig. 5 Screen while viewing test results
After entering this menu item the screen vie is
as in figure 5.
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There is an F-34 test result sho n on the
screen. Date and time is not sho n in the figure.
There is a result of battery estimation or a mes-
sage in the up center of the screen. Next line is for bat-
tery voltage and the last one – for date and time (not
sho n). The left part of the screen is occupied ith the
battery group and number. The right part of the screen
is for coefficient, used for battery capacity estimation.
By pressing the upper button, one can vie the
first test result of the next nonempty group. Long press-
ing causes fast group scrolling. After last nonempty
group is reached result A-1 is sho n.
By pressing lo er button, one can vie the next
result in the same group. Long pressing causes fast
result scrolling. After last result of the group is reached,
the result number 1 of the same group is sho n.
To exit the vie ing mode disconnect test clamps
from battery terminals.
5.3.3. Clear memory
This menu item is used for complete erasing of
test results saved in memory.
Warning! Memory clearing is irreversible action.
Thus, all the results that have been saved in memory
ill be removed, and their restoration ill be impossible.
Up to 200 test results can be stored in memory. If you
are going to save test results in memory, it is necessary
to correlate the number of empty memory cells ith
prospective quantity of batteries that you ish to
Group
scrolling
Estimated battery
capacity
Group
name
Coefficie
nt
Result
scrolling
Result (battery)
number inside group
Battery
voltage

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test. The number of empty memory cells is displayed in
the right bottom corner of the display (see figure 1 and
figure 2).
After entering this menu item, user is offered to
press four times device buttons in the specified se-
quence.
To avoid casual removal of saved results, the
button pressing sequence, necessary for clearing
memory, varies for each time the device is connected to
a battery.
5.3.4. Options
This menu item is used to change device operat-
ing modes.
All adjustments are kept in the flash memory of
the device until their follo ing change. Flash memory
holds its content ithout the need of a po er supply.
Qulon-12ns adjustment is described in the fol-
lo ing chapter of the manual.
6. Adjusting Qulon
Qulon-12ns is issued completely adjusted and
can be used for lead acid batteries diagnostics right
after purchases. By manufacture, Qulon-12ns is adjus-
ted as follo s.
Save mode - by default.
Calibrating coefficient k=1.00.
Language of messages - English.
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Time – GMT+3
All sounds are on.
The user can change factory adjustments. It is
recommended to study the present manual before any
adjustment of Qulon-12ns.
6.1. Options menu
To change adjustments it is necessary to con-
nect Qulon to a battery or optional adapter and after the
device ill estimate its capacity or ill give out the mes-
sage, - press the top button (icon "M" - menu entrance)
to enter the main menu. In the main menu – press lo er
button three times to note last menu item “Options” and
the top button to enter menu of adjustments.
The vie of options menu is presented in figure
6.
Fig. 6.Options menu
Pressing lo er button brings cursor to next line. Press-
ing upper button enters the menu item specified
Enter menu
item
Cursor
movement
Cursor

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by cursor.
To exit menu – disconnect test clumps from the
battery terminals.
6.2. Save mode
When you enter this menu item you are offered
to choose one of t o save modes: save by default or
save by command. Move cursor to the desired line.
Your adjustment is saved automatically. No you can
go to the main menu by pressing top button or discon-
nect Qulon from the battery.
6.2.1. Save by default
If you choose this save mode Qulon ill save the
test result automatically, right after the result is re-
ceived. Screen vie for this save mode is sho n in fig-
ure 2. If you do ant to hold just saved result press
lo er button – you ill have 3 possibilities:
a) to delete the just made estimation from the
memory and repeat the test automatically;
b) to delete the just made estimation from the
memory ithout repetition;
c) to return to the last screen (fig. 2).
6.2.3. Save by command
If you choose this save mode Qulon ill not save the
test result automatically. Screen vie for this save
mode is sho n in figure 3. If you need to save just
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received result – press the lo er button. You ill be
asked for confirmation to save the result to a designated
group and battery number inside group. You ill have 3
possibilities:
a) to save the just made estimation to the
memory (group name and the battery number is
sho n);
b) to return to the last screen (fig. 3);
c) to initiate the test repetition.
6.3. Calibrate (coefficient adjustment)
Warning! Lead acid battery capacity indicator
Qulon-12ns is a complicated device. Therefore, its re-
calibration should be made by the qualified user ho
studied the present manual and ho distinctly under-
stands the sequence and probable results of the action.
Qulon-12ns is calibrated at the factory ith the
use of average characteristics of 12-volt lead acid bat-
teries. Some specific battery may need some other cal-
ibration. To diminish capacity estimation error user can
recalibrate device for testing of some specific battery
type or confirm the validity of factory calibration.
User can do Qulon-12ns recalibration by chan-
ging the calibration coefficient.
Qulon-12ns calculates the estimated battery ca-
pacity according the follo ing formula:
Е = Ео * К,
here: Ео – estimated capacity ithout user’s correc-
tions, К – calibration coefficient.

-29-
When issued from the factory Qulon-12ns has
calibration coefficient К = 1.
To recalibrate Qulon-12ns you need: a) determ-
ine the value of calibration coefficient for your batteries
(see section 7) and b) adjust Qulon for ork ith this
coefficient (save this coefficient in Qulon’s memory).
To change calibration coefficient enter main
menu, select item “options”, enter options menu and se-
lect item “Calibrate”. After entering this item, you ill
see the current coefficient. You ill be asked if you ant
to change coefficient.
After “no” ans er (lo er button), you ill return
to the main menu.
After “yes” ans er (upper button), you ill see
the screen ith current coefficient. Pressing upper but-
ton increases coefficient (you see the current value on
the screen). Pressing lo er button decreases coefficient
(again you see on the screen the ne value). Holding
button causes fast coefficient changing. After the de-
sired coefficient is on the screen, disconnect Qulon from
the battery. The coefficient is saved in memory. It ill be
used during further capacity estimations until it is
changed once more. Any time you test a battery, you
see the coefficient value in the right top corner of the
screen.
6.4. Date and time
Qulon-12ns features quartz clock ith a calendar (pre-
programmed to 2049) for dating the test results. Since
the accuracy of the clock is limited, but user can
-30-
check and adjust the time. This procedure should also
be carried out after battery replacement (see section 7).
To set the date and time you need to connect
the device to the battery or optional adapter, enter the
main menu (Figure 4) and follo to “settings” menu
(Figure 6). Then choose time/sound item and go to
“date and time” item.
You'll see the current time and date. After con-
firming your desire to change date and(or) time by
pressing the top button, you ill see the date and time
changing screen. The cursor moves to the right ith the
top button. Lo er button is used to change the selected
number. The only possible clock mode is a 24-hour
mode.
After the desired date and time is on the screen,
disconnect Qulon from the battery.
6.5. Sound
For user's convenience the device is equipped
ith an acoustic signal. It is especially useful hen
orking in tight places, so as to judge the correctness of
connecting the device to the battery and the success of
the capacity estimation ithout seeing the display. To
enable the buzzer, enter the main menu (Figure 4), go
into the settings menu (Figure 6), move the cursor to
the line "time/sound", and press the top button. Then
select "sound" and enter this menu by pressing the top
button.
You ill be offered three options:
A. "all sounds" - sound ill accompany all

-31-
battery tests;
B) "main sounds" - audio signals ill accompany only in
case if some message arrives;
C) "no sounds" - the buzzer is completely disabled.
Exit this menu by pressing the top button or un-
plugging the device from the battery.
6.5. Language
Qulon can issue messages using t o languages:
(e.g. Russian or English). Consult your dealer concern-
ing your particular version.
To change message language enter main menu,
choose item options, choose item language. No you
see the current language. Choose desired language by
pressing lo er button.
To exit menu disconnect Qulon from the battery.
7. Replacing clock battery
The internal clock is po ered by a lithium
battery, fixed in a holder under a sliding cover on the
rear panel. Estimated battery life - at least one year. If
date or time information is correct – it may be because
of the discharged battery. In this case the battery must
be replaced.
Do not leave empty battery in the device. The
absence of a battery in a device affects only the clock
malfunction, all other functions ork as usual.
To replace the internal battery unplug Qulon
-32-
from the battery under test, open the sliding cover on
the rear panel and remove the battery from the holder.
After this, insert the ne battery into the holder ith plus
terminal up and close the rear lid.
Observe polarity hen replacing battery.
Operation of the device with the open rear
cover is not allowed.
Connect the device to a battery or adapter and
set the time and date in accordance ith section 6.4 of
this manual.
Please use only the correct size lithium batteries
CR2032 (diameter 20 mm, thickness 3.2 mm). Do not
attempt to charge the empty battery (they are not
designed for this purpose).
Do not replace the lithium battery ith other
sources of po er!
8. Calibrating Qulon (ho to
determine right coefficient value)
Qulon-12ns is calibrated at the factory ith the
use of average characteristics of 12-volt lead acid bat-
teries. Some specific battery may need some other cal-
ibration. To diminish capacity estimation error user can
recalibrate device for testing of some specific battery
type or confirm the validity of factory calibration.
User can perform the recalibration by changing
the calibration coefficient.
Qulon-12ns calculates the estimated battery

-33-
capacity according to the follo ing formula:
Е = Е0 * К,
here: Е0 – estimated capacity ithout user’s
corrections, К – calibration coefficient.
When issued from the factory Qulon-12ns has
calibration coefficient К = 1.
To recalibrate Qulon-12ns you need: a) determ-
ine the value of calibration coefficient for your batteries
and b) adjust Qulon for ork ith this coefficient (see
section 6.3).
You have several follo ing possibilities to de-
termine the calibration coefficient.
A) Get coefficient value from the pruducer's In-
ternet site .at-systems.ru, if there is data available
for your battery type (see section 7.1).
B) Determine coefficient by testing your battery
ith Qulon and the follo ing measured discharge (see
section 7.2) – this is the best and most recommen-
ded option.
В) Determine coefficient using “method of aver-
age” after testing a group of batteries ith Qulon (see
section 7.3) .
C) Determine coefficient using “method of max-
imum” after testing a group of batteries ith Qulon (see
section 7.4).
D) Determine coefficient using “method of battery his-
tory” after testing batteries ith Qulon (see section 7.5).
-34-
8.1. Coefficient from the producer’s
site
Recommended coefficients for some battery
types are placed in the Qulon producers Internet site
.at-systems.ru. They are mainly received by com-
paring the estimated battery capacity and measured
discharge results.
Before use of such data check battery type for
hich coefficient is recommended.
If there is no data for your battery type on the
site, e-mail the your battery information (battery type,
producer, country of production) to qulon@at-system-
s.ru. May be it ould be possible to get ne er informa-
tion. Your o n coefficient information is appreciated at
the same address – this ill help other Qulon users.
8.2. Measured discharge method
Warning. Measured discharge should be done
by the qualified user ho studied the present manual
and ho distinctly understands the sequence and prob-
able results of the action.
Measured discharge method of Qulon adjust-
ment is a preferable and most recommended meth-
od. It is based on the comparison of estimated battery
capacity produced by Qulon ith calibration coefficient
K=1 and measured discharge data for the same battery.
This method is the most correct. Nevertheless the ac-
curacy of the method is strongly dependent on the ac-
curacy of measured discharge.

-35-
Therefore you need to use a special device
(device set) for measured discharge ith the character-
istics not orse then follo ing: discharge current stabil-
ization (error < 3 %) or discharge current registration
(error < 1 %, sampling rate < 1 minute); automatic cut
off ith cut off voltage 10.5 V; automatic discharge time
registration (error < 1 %).
To get the most accurate result keep the battery
under room temperature for time needed for temperat-
ure equalizing.
Charge battery in full and keep it under float
charge at least for 24 hours. Disconnect battery from
the charger and from any loads. After 20-30 minutes (or
later) connect Qulon-12ns (adjusted for ork ith K=1)
to the battery (see section 3.2). Write do n the estim-
ated capacity E0.
Connect the battery to your device for measured
discharge. Set the discharge current to receive dis-
charge time about 15-20 hours and cut-off voltage 10.5
V. S itch discharge on. After battery is cut off rite
do n the discharge time and calculate battery capacity
using one of t o formulas:
a) for device set ith stabilized current:
Em = I * T , (1)
where: Em – measured capacity, A*h; I – sta-
bilized discharge current, amperes; T – discharge
time, hours.
-36-
b) for device set ith current registration:
Em =
∫
0
T
Itdt
, (2)
here: Em – measured capacity, A*h; I(t) – cur-
rent, changing in time, amperes; t – time; T – full dis-
charge time, hours.
Calculate calibration coefficient for your battery
according to formula:
К = Em/E0
Coefficient error could be reduced if you make
measured discharge for several batteries of the same
type and take the average coefficient for the group of
batteries.
8.3. Method of average
The method of average is used if making meas-
ured discharge is impossible or inconvenient. This
method is based on the assumption, that batteries to be
tested are part of some group (for example, intended for
connection in the battery system or already connected
in the battery system) and on the average have kno n
capacity (in the elementary case - nominal capacity).
This method is recommended for use ith the ne or
poorly orn out batteries.
Connect Qulon-12ns ( ith K=1) to each battery
of the group and rite do n the estimated capacity.
Calculate the average estimated capacity for the group
Eav, then calculate calibration coefficient for your battery

-37-
according to formula:
К = En/Eav,
here: En – nominal battery capacity or capacity
less then nominal, appointed in vie of deterioration of
batteries.
8.4. Method of maximum
The method of maximum is applied if carrying
out the measured discharge is impossible or inconveni-
ent. It is based on the assumption, that in the group of
testing batteries (for example, intended for connection
in the battery system or already connected in the bat-
tery system) the least orn out battery has kno n capa-
city (in the elementary case - nominal capacity).
This method is recommended for use ith the
orn out batteries.
Connect Qulon-12ns ( ith K=1) to each battery
of the group and rite do n the estimated capacity.
Find the maximum estimated capacity for the group
Emax, then calculate calibration coefficient for your bat-
tery according to formula:
К = En/Emax,
here: En – nominal battery capacity or capacity
less then nominal, appointed in vie of deterioration of
batteries.
-38-
8.5. Method of battery history
The method of battery history is used during
scheduled service of individual battery, if carrying out
the measured discharge is impossible or inconvenient.
The method is based on the assumption, that in the be-
ginning of the battery service life (right after the first
connection of Qulon-12ns to the battery), the capacity of
the battery is accepted kno n (for example, it is con-
sidered that it is equal to nominal capacity). During fur-
ther service battery capacity estimated by Qulon-12ns is
compared to this value.
Connect Qulon-12ns ( ith K=1) to the battery
and rite do n the estimated capacity Em1, then calcu-
late calibration coefficient for your battery according to
formula:
К = En/E1,
here: En – nominal battery capacity or capacity less
then nominal, appointed in vie of deterioration of the
battery.

-39-
9. Appendix: test cable checking
Qulon-12ns is equipped ith special cables ith
clips utilizing four- ire (Kelvin) connection. At the negli-
gent treatment - for example, a detachment from the
device by pulling by a cable, they could be damaged. If
you have any doubts about cables, it is possible to
check them up, using a digital tester as follo s.
A. Attach cable to Qulon-12ns.
B. Disconnect halves of both clamps from each
other (for example by installing a piece of cardboard or
plastic bet een halves).
C. S itch tester to resistance measurement
mode.
G. Connect tester to the halves of black
(negative) clamp - the tester should sho resistance to
the order of 0.65 Mohm.
D. Connect tester to the halves of the red
(positive) clamp - the tester should sho resistance at
least 2 MOhm or no contact.
E. Connect the halves of clamps (half crocodile
clips) to each other — remove insulators, placed before.
J. Connect tester bet een the black and red
clamps - tester should sho resistance to the order of
0.25 Mohm.
-40-
10. Specifications
1. Working voltage range - 9 V to 15 V.
2. Recommended range of nominal capacity of
batteries to test – 0.9 to 350 ampere-hours.
3. Battery voltage range for battery capacity es-
timation – 12.6 to 13.9 В.
4. Battery testing time under basic filtering mode
– up to 1.5 s.
5. Po ered – from the battery under test.
6. Test cable length – 0.6 m.
7. Weight – 0.4 kg.
8. Dimensions ithout cable - 135 x 70 x 23 mm.
9. Working temperature range - from 10 to 35 oC.
10. Humidity up to 95 % ithout condensation.
11. Display type – graphical LCD.