mru Optima 7 User manual

USER MANUAL OPTIMA 7
1 / 78 MRU GmbH, D-74172 Neckarsulm

USER MANUAL OPTIMA 7
MRU GmbH, D-74172 Neckarsulm 2 / 78
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Original user manual
© 2020 by MRU
No part of this manual my be published in any form (print, fotocopy,
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approval by the publisher.
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not marked as such, are properties of the respective owners.
Edition: 2020-07-02,V3.00.EN

USER MANUAL OPTIMA 7
3 / 78 MRU GmbH, D-74172 Neckarsulm
Table of content
1Information for product and safety............................................... 6
1.1. Safety manual .................................................................................................6
1.2. Safety precautions.........................................................................................6
Ensure safety ...................................................................................................7
Important general information about the device..............................7
1.5. User guideline for rechargeable batteries............................................8
2Introduction...................................................................................... 9
2.1. Intended use ...................................................................................................9
About us ........................................................................................................ 10
Packaging...................................................................................................... 11
Return of hazardous materials .............................................................. 11
Return of electronic equipment............................................................ 11
3Description...................................................................................... 12
Gas schematics diagram .......................................................................... 12
3.2. The Analyzer................................................................................................. 13
The Condensate separator (water trap) ............................................. 14
3.4. Extraction probes........................................................................................ 15
4Operating ........................................................................................ 16
Display............................................................................................................ 16
Keypad............................................................................................................ 17
Menu structure............................................................................................ 18
5First usage ....................................................................................... 19
5.1. Preparatory steps ....................................................................................... 19
5.2. Analyzer settings ........................................................................................ 19
Setting measurement................................................................................ 20
Power-On protection ................................................................................ 22
5.5. Setting printer type and print out........................................................ 22
Setting Bluetooth parameters................................................................ 23
Bluetooth module Default setting........................................................ 24
Setting date and time ............................................................................... 26
Configuring Measurement Programs ................................................. 26
Setting CO limit value............................................................................... 27
Select fuel types and O2 reference...................................................... 27
Adding fuels to fuel type selection.............................................................. 27
Setting O2reference.......................................................................................... 28
Defining user fuels type ........................................................................... 29
Defining measurement window............................................................ 30
Configuring zoom window ..................................................................... 31
Changing measurement program names.......................................... 31
6Preparing measurement................................................................ 32

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MRU GmbH, D-74172 Neckarsulm 4 / 78
Ensure power supply .................................................................................32
Automatic Auto-off function...................................................................32
Measuring with grid power supply / Battery charging.................32
Battery charge condition ......................................................................... 32
Operating temperature ............................................................................33
Controlling Condensate separator (water trap)...............................33
Connections and tightness .....................................................................34
Automatic zero-point setting.................................................................34
Repeating the zeroing ......................................................................................34
7Performing measurement ............................................................. 35
Selecting the measuring program........................................................35
Core flow search .........................................................................................36
7.3. Measured value display............................................................................37
7.4. Non-continuous draft measurement ..................................................38
Setting CO-Limit (without purging).....................................................39
CO-purging...................................................................................................39
CO/H2 and CO high (optional)..............................................................40
Performing Test program ........................................................................40
Performing Ambient CO Test.................................................................40
Temporary buffer........................................................................................42
Store measured values in the buffer ...........................................................42
Overwrite measured values in buffer ..........................................................43
Storing measured values .........................................................................43
Printing measurement values.................................................................44
Terminate measurement..........................................................................45
7.14. Last measurement values ........................................................................45
Pressure measurement.............................................................................46
7.16. Differential temperature measurement (optional) .........................47
8Data Storage ...................................................................................48
Organizing data storage ..........................................................................48
Calling up information about data storage ......................................48
Site administration.....................................................................................49
Create new site....................................................................................................49
View sites...............................................................................................................50
Searching site.......................................................................................................50
Changing sites..................................................................................................... 51
Deleting sites ....................................................................................................... 52
Data transfer using SD card....................................................................53
Importing sites ....................................................................................................53
Exporting sites .....................................................................................................55
Exporting combustion measurements........................................................55

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Exporting differential pressure measurements. ...................................... 56
Measurement in Data storage............................................................... 56
Viewing measurements.................................................................................... 56
Deleting measurements................................................................................... 57
Transferring measurements to SD-Card (Option) .................................. 58
9Extras / Adjustment ....................................................................... 59
9.1. Service calibration menu ......................................................................... 59
Default settings ........................................................................................... 60
Service values............................................................................................... 61
Performing leak test .................................................................................. 61
Contents SD card........................................................................................ 63
9.6. Contents Analyzer information ............................................................. 63
10 Maintenance and care ................................................................ 64
Maintenance................................................................................................. 64
Service messages........................................................................................ 64
11 Appendix...................................................................................... 65
Technical data.............................................................................................. 65
Analysis and calculations......................................................................... 69
Text input ...................................................................................................... 71
Asking user for decision........................................................................... 71
Firmware update......................................................................................... 72
Install the new software version in the analyzer..................................... 72
Performing and checking the update......................................................... 72
In case of error .................................................................................................... 73
11.6. Using the USB Port .................................................................................... 74
Troubleshooting ......................................................................................... 74
Troubleshooting the analyzer........................................................................ 74
Troubleshooting condensate separator..................................................... 76
Further options............................................................................................ 76
Prefilter for high dust concentrations......................................................... 76
12 Declaration of conformity ......................................................... 77

USER MANUAL OPTIMA 7
MRU GmbH, D-74172 Neckarsulm 6 / 78
1Information for product and safety
1.1. Safety manual
All general information and safety precautions of MRU products are
listed in the supplied separate safety manual.
Therefore, this manual must be read and observed before the first use
of the instrument.
Instrument-specific safety and warning requirements in this manual are
prefixed before dangerous actions.
1.2. Safety precautions
The used categories of safety precautions are here explained once
more.
DANGER
Identifies an immediate, impending hazard that, if
ignored, will result in severe bodily injuries or death.
WARNING
Identifies an immediate, impending hazard that, if
ignored, may result in severe bodily injuries, material
damage or death.
CAUTION
Identifies a possibly dangerous situation that, if
ignored, may result in minor injuries.
ATTENTION
Identifies a possibly harmful situation that, if ignored,
may result in damages to the device or its
surroundings.
NOTE
Identifies user tips and other especially important infor-
mation.
The explanation of safety notices:
CAUTION
HOT –danger of burns and fire hazards from gas
extraction probe.
Physical harm and property damage can be caused.
►Cool down the probe tube.

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7 / 78 MRU GmbH, D-74172 Neckarsulm
Ensure safety
►Please read the user manual completely before the first use.
►Only use the analyzer for the intended use and within the parameters
specified in the technical data.
►Do not use any violence.
►Avoid falls.
►Do not put the analyzer into use, if the housing, power supply unit or
supply leads are damaged.
►Do not store the analyzer together with solvents. Do not use
desiccants.
►Only carry out maintenance and service work on this analyzer as de-
scribed in the User Manual. Observe the prescribed action steps.
►Operate the analyzer only in closed, dry rooms and protect it from
rain and moisture.
►When operating the analyzer on mains power, operate it only with
the mains adapter supplied.
►Do not use the metal tube of the gas sampling probe or other metal-
lic parts / accessories as electrical conductors.
►The analyzer must not be located in the immediate vicinity of open
fire or great heat.
►The specified temperature range of the gas sampling probe must not
be exceeded, otherwise the probe tube and temperature sensor will
be destroyed.
Important general information about the device
•The analyzer is not suitable for long term (continuous) measure-
ments (this is a spot analyzer).
•Before using the analyzer verify the condition of the various parts of
the analyzer, such as the probe, the ambient air conditions, the con-
densate separator, star filter and the connectors for damage and/or
blockages.
•When starting the analyzer up it will take between 1 –3 minutes to
set to zero depending on the condition of the sensors and ambient
conditions. (Zeroing).
•The minimum zeroing time of the analyzer to achieve correct meas-
urement values can be expected by 1.5 minutes!
•Exposure to acids; aggressive gases such as Sulphur; vapours such as
thinners, gasoline, alcohol and paint, etc. can damage, reduce the life
of, or destroy the sensors.
•The life of the sensors depends on how they are used, maintained
and treated. Typical average life expectations are: O2 - 2 years; CO -
2 - 3 years and NO - 3 years.

USER MANUAL OPTIMA 7
MRU GmbH, D-74172 Neckarsulm 8 / 78
•The battery life is at least 500 charge-discharge cycles.
With increasing number of charging cycles the battery ca-
pacity (indicated in operating hours) is reduced.
1.5. User guideline for rechargeable batteries
NOTE
The rechargeable batterie is installed inside the ana-
lyzer and is not accessible to the end customer. How-
ever, the following instructions must generally be ob-
served when handling lithium-ion rechargeable batter-
ies.
•This rechargeable battery can only be used in this analyzer.
•Do not throw the rechargeable battery into a fire, charge it at high
temperatures and store it in a hot environment.
•Do not deform, short-circuit or modify the rechargeable battery.
•The rechargeable battery must not be used in or under water.
•Do not expose the rechargeable battery to strong mechanical forces
and do not throw it.
•Do not cut or squeeze the connecting cables of the rechargeable
battery.
•Do not connect the (+) contact to the (-) contact or metal.
•Non-observance of the above guidelines can cause heat, fire and ex-
plosions

USER MANUAL OPTIMA 7
9 / 78 MRU GmbH, D-74172 Neckarsulm
2Introduction
•This manual enables you to understand and safely operate this MRU
Analyzer.
•Please read this manual with great vigilant and get familiar with the
product before using it.
•This analyzer may only be operated by competent personnel and for
its intended use.
•Please pay special attention to all safety directions and warnings to
prevent personal injuries and damaging of the product.
•We can’t be held responsible for any injuries and/or damages that
occur by not following the instructions in this manual.
•Always keep the manual near you when working with the analyzer,
to be able to read instructions as needed. Please ensure to hand
over all documents to when handing the analyzer over to others.
2.1. Intended use
The Analyzer analyzer is intended for short-term measurement in the
context of emission control measurements and adjustments at small
furnaces. The analyzer measures the measurements provided by
VDI4206 and EN50379 metrics and stores them for further processing.
The analyzer is specifically not intended as a safety device or personal
protective equipment.
The analyzer should not be used as a warning device to warn people
against the presence of harmful gases.
The analyzer must be used according to instructions for the intended
use.
Our analyzers are checked according to the following regulations:
VDE 0411 (EN61010) and DIN VDE 0701 before they leave the MRU
GmbH factory.
MRU technical products are designed and manufactured according to
DIN 31000/ VDE 1000 and UVV = VBG 4 of the professional guilds for
fine mechanics and electrical engineering.
MRU GmbH assures that the analyzer complies to the essential require-
ments of the legal regulations of the member states of the electro-mag-
netic compatibility (89/336/EWG)
WARNING
Risk from manipulations to the measuring device
Operational safety hazard
►Modifications or changes to the measuring device are
not allowed.

USER MANUAL OPTIMA 7
MRU GmbH, D-74172 Neckarsulm 10 / 78
About us
The analyzer is produced by the MRU GmbH in Neckarsulm, Germany
(Founded in 1984), a medium sized company that specializes in devel-
oping, producing and marketing high quality emission monitoring
analyzers.
MRU GmbH produces a wide range of instruments, from standard
analyzers up to tailor made industrial analyzers.
Plant 1: Sales, Service, R&D
Plant 2 (Production)
Fuchshalde 8 + 12
74172 Neckarsulm - Obereisesheim
GERMANY
Tel [phone] (Front office)
Tel [phone] (Service)
Fax [phone]
Email: [email protected]
Site: www.mru.eu

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11 / 78 MRU GmbH, D-74172 Neckarsulm
Packaging
Save the original carton and packing materials to prevent damage in
transit in case you need to return the unit to the factory.
Return of hazardous materials
Waste Disposal/Returns/Warranty - MRU GmbH is required to accept
the return of hazardous waste such as electro-chemical sensors that
cannot be disposed of locally.
Hazardous waste must be returned to MRU prepaid.
Return of electronic equipment
MRU GmbH is required to accept the return, for proper disposal, of all
analyzers delivered after 13th of August 2005. Analyzers must be re-
turned to MRU prepaid.

USER MANUAL OPTIMA 7
MRU GmbH, D-74172 Neckarsulm 12 / 78
3Description
The main task of the analyzer is to assist with precision control and ad-
justment measurements of gas, oil and wood fired furnaces.
Available options for this and other analyzers can be found on the MRU
Homepage or speak to a member of our sales team.
Gas schematics diagram
In combination with the extraction probe (inserted in the stack) the in-
ternal gas pump of the OPTIMA7 analyzer extracts a portion of the flue
gas and analyzes it using electro-chemical sensors.
The thermo-element in the probe tube measures the flue gas tempera-
ture and due to the construction of the probe pressure (draft) can be
measured as well.
Position
Description
1
Sampling probe
2
Triple hose
3
Condensate separator
4
Star filter
5
Non return valve
6
Gas pump
7
Sensor chamber
8
O2-Sensor
9
Further electrochemical sensors optional*
10
CO2 NDIR *
11
CO Purge pump * / not available with CO2-NDIR
12
Pressure sensor *
*optional

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3.2. The Analyzer
The compact analyzer is made from a fibre re-enforced plastic material
with all measurement related connections at the bottom of the analyzer.
Position
Description
1
Display
2
Key pad
3
Temperature connector T2
4
Temperature connector T1
5
Pressure connector P1
6
Pressure connector P2
7
Gas outlet
8
IR-Interface
9
USB-port and charging port
10
SD-card reader
11
Fixing magnets
12
Analyzer feet
13
Handle strip
14
Gas outlet
15
Pressure connector P3
16
Connector AUX
ATTENTION
Gas outlet:
During measurement the gas outlet must not be cov-
ered

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MRU GmbH, D-74172 Neckarsulm 14 / 78
The Condensate separator (water trap)
•CAUTION
Condensate is acidic
The condensate from the container can be slight acidic
and can cause chemical burn.
►Immediately clean with plenty of water once you have
encountered acid
During the measurement accumulating condensate is collected in the
condensate separator
Remove the condensate separator by pulling it towards you (1) out of
the groove of the OPTIMA 7 housing, then pull it downwards (2).
Condensate vessel and plugs are screwed together. To change the filter
and dry and clean the condensate separator this can be easily disassem-
bled and screwed together again.
After cleaning, a leak test must be carried out.
See also chapter 9.4 Performing leak test, Page 61.
In the condensate separator of the OPTIMA7 an exhaust gas filter is at-
tached. This filter out the first coarse dirt. This pocket star filter is washa-
ble and can be used 4-5 times afterwards.
Frequent measurements result in a high degree of contamination which
requires regular replacement of this filter.

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3.4. Extraction probes
The analyzer is available with either a probe with fixed probe tube or with ex-
changeable probe tubes. A complete list of available probe options can be
found in our effective price list.
Here 2 variants are shown as examples:
1
Probe tube
2
Probe cone (high grade steel)
3
Triple hose (NBR or Viton)
4
Connector for sample gas measurement
5
Connector for draft measurement
6
Connector for temperature measurement
Probe ST
With 180 mm probe pipe
(fixed)
and 1,5 m sampling line
Probe SF
With 300 mm exchangeable
probe pipe and 2,7 m sam-
pling line

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4Operating
Display
All information required to operate the analyzer is displayed as shown
below.
Position
Description
1
Menu bar
2
Function key bar
3
Display panel
1. Menu
2. Measurement value
4
Zeroing active
5
SD-Card in the slot
1. Indication green
Read- and write access
Indication yellow
only Read access
(SD-Card write protected)
6
Battery charge condition

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Keypad
Description and function of the keys:
ON/OFF
Press to start the analyzer without
delay. The power off function will be
delayed to protect the sensors. If
there is not enough ambient air the
analyzer will recommend the purg-
ing of the sensors.
Function Keys
Activates the functions seen on the
display (2 function key bar).
Menu Key
Will show all available functions in
the window that is currently in use –
also those which have an individual
key on the key pad like the printer
and the three function keys.
ESC
Abort or return to the menu above
Arrow Keys
Jump in between lines, change
values
OK
Confirmation key, select a marked
menu point
Printer
Activates the printer function in the
measurement and service window

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Menu structure
The analyzer organizes all available actions in three main menus:
•Menu Measurement
All available measurement options will be displayed and can be se-
lected here.
•Menu Storage
All available storage options will be displayed and can be selected
here.
•Menu Extra
All other actions are available here to manage and customize the
device.
You can jump in between the 3 main menus with the 3 function keys
(according to the displayed name on the screen).
OPTIMA 7
The topic „Flue
gas measure-
ments „is a
standard feature
in every analyzer
and is explained
in chapter
7 Per-
forming meas-
urement
, Page
35
. Other menu
points are op-
tional and will be
explained either
in this manual or
in an additional
manual or flyer.
.
The menu Stor-
age is explained
in chapter
8
Data
Storage
, Page 48.
The menu Extra is
explained in
Chapter
9
Extras /
Adjustment
,
Page
59.

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5First usage
After the analyzer has been inspected and is ready for start-up it can be
switched on and personalized settings can be entered. These settings can
be changed at any time.
5.1. Preparatory steps
►Unpack the analyzer.
►Read the User Manual completely.
►The analyzer leaves the factory assembled and ready for use.
Nevertheless, check the device for completeness and integrity.
►Charge the battery of the analyzer for about 8 hours.
►Check date and time. Modify if needed.
5.2. Analyzer settings
The “Settings” menu allows configuring some instrument specific pa-
rameters.
In the main menu “EXTRAS“= “F3 key” - scroll down to “Settings“ then
press the “OK“ key. By selecting a line, the parameter value can be
changed by the arrow keys.

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Setting
Range
Description
LCD brightness
5 –100 %
Display-brightness, depending on
temperature and also on the per-
sonal judgement of the user, at 20°C
a value of ca. 50% is normal
Language
option
Select device languages
Country
option
Enables some country specific pa-
rameters like fuel types, calculated
values etc.
LED condensate
trap
0 … 150
Change the brightness of the con-
densate separator LED
Helping hints
ON / OFF
Helpful hints activated or deac-
tivated (explanation below)
Switch-ON pro-
tection
ON / OFF
If activated and if ON key is pressed
(possibly inadvertently), then the
message „3 seconds OK key press
“is displayed
Keyboard beeper
ON / OFF
Keyboard beeper activated or deac-
tivated
Power-on logo
ON / OFF
Logo will be show during power-ON
of the analyzer
Setting measurement
►Press F3.
The Extras menu appears.
►Press F3.
The menu Settings appears.
►Press F3.
The menu Measurement settings appears.