MRU Instruments 410076US1 User manual

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USER MANUAL OPTIMA 7

Legal notices / Intellectual property rights comments
Original user manual
© 2021 by MRU
No part of this manual my be published in any form (print, fotocopy,
electronic media or any other publication form) without a written
approval by the publisher.
All user trade marks and name mark descriptions, even those which are
not marked as such, are properties of the respective owners.

Edition: 2021-04-19,V3.10.EN

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USER MANUAL OPTIMA 7

NOTE

The battery life is at least 500 charge-discharge cycles.
With increasing number of charging cycles the battery ca­pacity (indicated in operating hours) is reduced.

1.5. User guideline for rechargeable batteries

The rechargeable batterie is installed inside the ana­lyser and is not accessible to the end customer. How­ever, the following instructions must generally be ob­served when handling lithium-ion rechargeable batter­ies.

This rechargeable battery can only be used in this analyser.
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 ex­plosions

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USER MANUAL OPTIMA 7

3.2. The Analyser

The compact analyser is made from a fibre re-enforced plastic material
with all measurement related connections at the bottom of the analyser.

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 cov­ered

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USER MANUAL OPTIMA 7

(fixed)

probe pipe

and 2,7 m sam-

3.4. Extraction probes

The analyser is available with either a probe with fixed probe tube or with ex­changeable probe tubes. A complete list of available probe options can be
found in our effective price list.

Here 2 variants are shown as examples:

Probe ST

With 180 mm probe pipe

Probe SF

With 300 mm exchangeable

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

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USER MANUAL OPTIMA 7

5 First usage

After the analyser 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 analyser.
Read the User Manual completely.
The analyser leaves the factory assembled and ready for use.
Nevertheless, check the device for completeness and integrity.
Charge the battery of the analyser for about 8 hours.

Check date and time. Modify if needed.

5.2. Analyzer settings

nstrument specific pa-

rameters.

-

. By selecting a line, the parameter value can be

changed by the arrow keys.

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USER MANUAL OPTIMA 7

In the "Measurement settings" menu you can make for example the fol­lowing adjustments:

Temperature Unit °C, °F

Pressure Unit Pa, hPa/Pa, hPa,

kPa/Pa, kPa,
mbar, mmH2O,
cmH2O, inH2O,
mmHg, inHg, PSI,

Draft Unit

Core flow search ON / OFF Core flow search before start of each

Combustion cal­culation

Pa, hPa/Pa, hPa,
kPa/Pa, kPa,
mbar, mmH2O,
cmH2O, inH2O,
mmHg, inHg, PSI,

ON / OFF

Change the unit for temperature in all
screens

Change the unit for pressure in all
screens. The meaning of hPa/Pa and
kPa/Pa is that the instrument performs
a dynamic change of unit depending
on the absolute value of pressure.

Change the unit for pressure in all
screens. The meaning of hPa/Pa and
kPa/Pa is that the instrument performs
a dynamic change of unit depending
on the absolute value of pressure.

flue gas measurement: activated or de­activated

If the combustion calculation is
switched off following items will be
changed:

- no fuel types, respectively always

"Sample Gas"

- no measuring values losses, ETA,
ETAcond, Dev. point

- no measuring value CO2, except it
will be measured

- no measuring values CO/NO/,,,. in
[mg/kWh]/[mg/MJ]

- no fuel type will be shown on the
menu bar and print-out

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USER MANUAL OPTIMA 7

Adding fuels to fuel type selection

Select Gas measurements.
Press OK.

The menu Selection meas. program appears.

Press OK

The menu Fuel type selection appears.

Press F2.

The menu Fuel type list appears.
Select the fuel which should be added to the menu Fuel type selec­tion.
Press F1.

The selected fuel is marked with a check mark
Select other fuels if necessary.
Press OK.

The selected fuels are displayed in the menu Fuel type selection.

Setting O2reference

Go to the menu Fuel type selection

See also Chapter Adding fuels to fuel type selection, Page 26

Select the desired fuel.
Press F3.

The menu fuel type appears.
Set the desired O2 reference.
Press OK.

The set O2 reference is saved.

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USER MANUAL OPTIMA 7

Before using the core flow search it must be switched-on:

Positioning the probe in the core flow:

Insert the probe pipe slowly into the stack and position your probe pipe
when you have reached the maximum flue gas temperature that is dis­played (see temperature maximum value on the display in this case
45°C).
Maximum temperature has been reached when the arrows (left picture)
disappear, max. (Right picture) appears in place of the arrow, and the
beeper signal stops. Moving away from the max. Temperature will result
in the bars moving away from the max. Temperature (1 bar is equivalent
to 1°C). Once the right core flow has been achieved, the probe is fixed
with the probe cone screw.

7.3. Measured value display

After the core flow search you will see the measurement values on the
display.
Measurement values can be organized on three pages, each page dis­playing 6 measurement values.
The order of the display is operator settable.
There are direct measured values available such as Oxygen and Temper­ature as well as calculated values such as dew point, efficiency and CO2.
You will also find the same measurement value in different calculated
values such as CO in ppm or CO in mg/kWh.

Values that cannot be displayed are indicated with dashes. Possible rea­sons for value not being displayed are:

Electro chemical sensor was detected as defective during zeroing.

External temperature sensors are not connected.
The measurement value T- ­G

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USER MANUAL OPTIMA 7

There are three measurement windows available, with the arrow keys
left and right moving between them.
Zoom function, each with two values, is activated by moving the arrow
keys up and down. Moving arrow keys left and right pages between the
two zoom windows.

7.4. Non-continuous draft measurement

The analyser provides for a non-continuous draft measurement. The
draft measurement is disabled when a maximum time after zeroing has
elapsed or a significant change in temperature has been detected by
the instrument. The maximum time is configured to 10 minutes.
If t --.-

To indicate that the draft measurement is not continuously available it is
displayed in colour red.
.

The frozen data is displayed in green.
The unfreeze the measurement one has to exit the menu and enter
again

All other measurements are processed continuously independent of the
draft measurement status.

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USER MANUAL OPTIMA 7

Select Start zeroing.
Press OK.

A message appears.
The zeroing is performed.
After zeroing, you can start the CO Ambient test.

Select CO ambient

The menu CO (zero) appears. The current CO value (zeroing) as a

check is indicated. (This value must be approx. 0 ppm!)
Go to the measuring point.
Press F3.

The menu CO (peak) appears.

The CO Ambient test is performed.

The current CO (ambient) and CO (peak) values will be indicated.
Press F3.

The measurement is finished.

The CO (zero) value, CO (ambient) value and the CO (peak) value

are displayed.
Press the printer key to print out the measurement results.
Press the ESC key to return to the Measurement menu.

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USER MANUAL OPTIMA 7

7.16.Differential temperature measurement (optional)

In the differential temperature measurement menu two temperatures
can be measured simultaneously by using the T1 and T2 connectors.
Both measured temperatures and the difference between the tempera­tures will be displayed.

Go to the Measurement menu.
Select Diff. Temp. Measurement.
Press OK.

The menu Diff. Temp. Measurement appears.

The temperatures T1, T2 and the difference are displayed.

NOTE

The accuracy of the difference temperature measure­ment is guaranteed only on use of the MRU temperature
sensors.

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USER MANUAL OPTIMA 7

View sites

Go to the Storage menu.
Select Sites administration.
Press OK.

The menu Sites administration appears.
Each stored site is displayed on a page with the coloured site

number and eight additional free text lines.
If necessary, scroll through the sites until you have found the desired
site.

NOTE

You also have the possibility to search for sites by set­ting a search mask.

See also chapter Searching site, Page 48.

Searching site

You have the possibility to enter certain parameters in order to search
for particular sites. In the following example we will search for the site
that is assigned to John Example.

Go to the menu Sites administration.
Press the Menu Key.

A selection list appears.
Select Search a site.
Press OK.

The menu Search a site appears.

You can choose to filter by Site number, by content in Line 2 or

for the rest of the other text lines.

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USER MANUAL OPTIMA 7

Select a line in which you want to search for content.
In this example, the search is performed in line 2.
Press F3.

A window appears.
Enter the desired search term.
In this example the search term is John Example.
Press OK.

The menu Search a site appears.

The search term appears in the selected line.

Press F2.

The site that is assigned to John Example is displayed. If several sites
were found, the total number is displayed in the header and you can
scroll through these found sites.

Changing sites

Go to the Storage menu.
Select Sites administration.
Press F2.

The menu Sites administration appears.
Select the site that you want to change.
Press F2.

A bar appears.
Select the free text lines that you want to change.
Press F1.

A window appears.
Enter the desired changes.
If necessary, select further free text lines and change the correspond­ing free text lines.
Press F3.

The changes are stored.

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USER MANUAL OPTIMA 7

Deleting sites

You can delete sites individually or delete all sites simultaneously.

Deleting sites individually

Go to the Storage menu.
Select Sites administration.
Press F2.

The menu Sites administration appears.
Select the site you want to delete.
Press F3.

A message appears.
Select continue to delete the site
Select abort to retain the site.
Press OK.

Depending on the selection, the site is deleted or retained

Deleting all sites.

Go to the Storage menu.
Select Delete all sites.
Press OK.

A message appears.
Select continue to delete all sites.
Select abort to retain all sites.
Press OK.

Depending on the selection, the site is deleted or retained

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USER MANUAL OPTIMA 7

ill get a

With this function you can Import Sites which have been created on a
computer or another Analyzer.

German for
sites). The file has no column heading that means that the first line al­ready has user data. Each line has a minimum of 9 columns (with 8
semi-colons) and the first field in the line will be the site number. All
data will be imported as long a site number is available. Per field a maxi­mum of 24 characters will be imported, too long words will be cut off.

Example file with 8 valid sites (4 with 9 lines and 4 with less lines):

A1-Z1;A1-Z2;A1-Z3;A1-Z4;A1-Z5;A1-Z6;A1-Z7;A1-Z8;A1-Z9

A2-Z1;A2-Z2;A2-Z3;A2-Z4;A2-Z5;A2-Z6;A2-Z7;A2-Z8;A2-Z9

A3-Z1;A3-Z2;A3-Z3;A3-Z4;A3-Z5;A3-Z6;A3-Z7;A3-Z8;A3-Z9

A4-Z1;A4-Z2;A4-Z3;A4-Z4;A4-Z5;A4-Z6;A4-Z7;A4-Z8;A4-Z9

A5-Z1;A5-Z2;A5-Z3;A5-Z4;;;;;

A6-Z1;A6-Z2;;A6-Z4;;;;;

A7-Z1;;;A7-Z4;;;;;

A8-Z1;;;;;;;;

Example file with 2 invalid sites (1 with not enough fields and 1 with
missing site number):

A1-Z1;A1-Z2

;A1-Z2;A1-Z3;A1-Z4;A1-Z5;A1-Z6;A1-Z7;A1-Z8;A1-Z9

NOTE

While importing data from the SD Card to the analyser
there is no check for double site numbers (Line 1), nei­ther inside of the file that is imported nor between the
file and the sites already inside the analyser. The analyser
can easily handle double site numbers but you could
face problems with double site numbers when exporting
them again to a computer program (see also Export of
Measurements).

However, the analyser marks the files that have been im­ported successfully. If you try to import a file with the
same analyser that is already in the analyser you w
red information screen.

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USER MANUAL OPTIMA 7

Exporting sites

Go to the Storage menu.
Select Sites onto SD card.
Press OK

The menu Sites onto SD card appears.

Press F2.

The sites are exported.
This function can be used for an analyser back up or if you wish to sup­ply the analyser information to a computer program or another ana­lyser. This is very handy if you have made some modifications inside the
analyser (site) for example if you have modified the phone number of a
customer and this modification needs to be updated in the computer
software, or if a second analyser needs to have the same site infor­mation.

Only the file name is
which the xxxxx are continuing 5-digit numbers with leading zeros. If
the file must be imported into another analyser, the file must first be re-

.

Exporting combustion measurements

This function is used to export the measurements from the analyser to a com­puter program.

This function is not suitable for back up or for the transfer to another analyser
because the exported file cannot be imported again!

The created file has the name
5-digit numbers with leading zeros.

The created file has a column header with the following information: Site num­ber, Date/Time, Measuring program name, Fuel type, CO2max, O2reference,
and all measured values that the analyser can measure as well as the soot
numbers, Derivate and T-Boiler.

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USER MANUAL OPTIMA 7

You have the possibility to display only those data that are assigned to a
single site:

played.

or while you select with the menu key the function "search a site"
and execute, as described in the chapter site administration.

Deleting measurements

You are able to

delete single measurements, while they are displayed press the key
F3 = "delete" .
or delete all measurements of a measuring type

Go to the Storage menu.
Select Delete measurements.

The menu Delete measurements appears.

Select which measurement type you want to delete.
Press F2.

A message appears.

Select continue to delete all measurements.

Select abort to retain all measurements.

Press OK.

Depending on the selection, the measurement data are deleted or

retained.

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USER MANUAL OPTIMA 7

Transferring measurements to SD-Card (Option)

The analyser offers the possibility to export all stored measurements to

a SD card.

Go to the Storage menu
Select Measurements to SD card.
Press OK.
Select the desired measurement type.
Press F2.

The selected measurement type is transferred to the SD card

SD card is reported by the instrument. Make sure that the SD card is not
write protected.

The data are stored as a csv-file (e.g., EMI01032.csv) on the SD card. The
filename exists of a sequential number which fixes the device.

This file is editable on your Notebook/PC with a program like e.g. Mi­crosoft® EXCEL or OpenOffice® Calc.
With possible problems with the using of your computer programs
please read your software documentations or ask your software dealer.

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USER MANUAL OPTIMA 7

9 Extras / Adjustment

The analyser is delivered in a standard software configuration which
should cover most needs. However, there are many ways to tailor the
settings to your individual needs if required. The possibilities are highly
flexible and individual adaptable.
Use the variable possibilities to adapt your analyser to your own needs
and customize the measurement menu, the measurement window, the
printer output and many other features. Usually this is something you
will do once you receive the analyser, once you have adapted your ana­lyser
you can whenever you need and want to do so.
After you have made any changes in the configuration, you should
switch off the analyser to save all the changes that have been made.
Next time that you start up the analyser, all changes will have been
made

9.1. Service calibration menu

The Maintenance adjustment menu is secured with a Pin Code to pro­tect it against unauthorized users.

again.
Please contact MRU GmbH if you need the Pin Code for your analyser.
Press the Enter key if you should have landed in this menu by accident

Go to the Extras menu.
Select Service menu.
Press OK.

A window for entering the PIN-code appears.

Enter the PIN-code

If you enter the PIN-code correctly, you will have access to the

service menu.

If the PIN-code is entered incorrectly, you will be returned to the

Extras menu.

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USER MANUAL OPTIMA 7

NOTE

With dirt and soot particles on the probe tube the test cap
will not seal properly.

The probe tip must be cleaned before you start this test!

Go to the Extras menu.
Select Leak proof test.
Press OK.

The menu Leak proof test appears.

Ensure that the leak test cap is plugged in.

Pressure is established.
A 10-second test is running.
A message appears whether the leak proof test was passed or not.

Remove the proof test cap.

If of the leak proof test is not passed the probe must be checked including
the hosing as well as the condensate separator.
If no undensity is ascertained in these external parts the OPTIMA 7
Combustion Analyzer has to be checked in a service department
(worldwide service departments see www.mru.eu)

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USER MANUAL OPTIMA 7

(requires recovery time of double the expo­sure time for CO2> 20 Vol%)

Electrochemical Sensor Measuring range extension up

to 25 % (Option #62414)

Measuring Range 0 - 25 Vol.%
Resolution 0,1 %
Abs. Accuracy. ± 0,2 Vol.%
Response Time T90 < 20s

Electrochemical Sensor CO

H2compensated
Nom. Measuring Range 0 - 10000 ppm
Overload Range < 20000 ppm
Resolution 1 ppm
Accuracy abs. / reading ± 10 ppm

5% (0 4000 ppm)
10% (> 4000 ppm)

Response Time T90 < 40s

Option CO low

Measuring Range 500 ppm
Resolution 0,1 ppm
Accuracy ± 2ppm / 5%

Electrochemical Sensor CO high (Option #63057)

Nom. Measuring Range 0 - 4000 ppm
Overload Range < 20000 ppm
Resolution 1 ppm
Accuracy abs. / reading ± 100 ppm /

5% (0 - 4000 ppm)
10 % (> 4000 ppm

Response Time T90 < 40s

Electrochemical Sensor CO very high (Option #63134)

Nom. Measuring Range 0 - 40.000 ppm / (0 - 4%)
Overload Range < 100.000 ppm / (<10%)
Resolution 0. 10000 : 1 ppm

>= 1% : 10 ppm / (0,001%)

Accuracy abs. / reading ± 200 ppm /

5% (0 - 40.000 ppm /
(0-..%))
10% (>100.000ppm /
(<10%))

Response Time T90 < 40s

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USER MANUAL OPTIMA 7

Electrochemical Sensor NO (Option #63058)

Nom. Measuring Range 0 - 1000 ppm
Overload Range < 5000 ppm
Resolution 1 ppm
Accuracy abs./reading ± 5ppm

5% (0 - 1000 ppm)
10% (> 1000 ppm)

Response Time T90 < 30s

Option No low

Measuring Range 0 - 300 ppm
Resolution 0,1 ppm
Accuracy 2 ppm / 5%

Electrochemical Sensor NO

2

Nom. Measuring Range 0 - 200 ppm
Overload Range < 1000 ppm
Resolution 1 ppm
Accuracy abs./reading ± 5ppm / 5% (0 - 200 ppm)

10% (> 200 ppm)

Response Time T90 < 40s

Option NO2low

Measuring Range 0 - 300 ppm
Resolution 0,1 ppm
Accuracy 4 ppm / 5%

Electrochemical Sensor SO

2

Nom. Measuring Range 0 - 2000 ppm
Overload Range < 5000 ppm
Resolution 1 ppm
Accuracy abs./reading ± 10 ppm /

5% (0 - 2000 ppm)
10% (> 2000 ppm)

Response Time T90 < 40s

Option SO2low

Measuring Range 0 - 300 ppm
Resolution 0,1 ppm
Accuracy 4 ppm / 5%

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USER MANUAL OPTIMA 7

Electrochemical Sensor

H2S
placed on additional position
(depending on configuration)

Nom. Measuring Range 0 - 500 ppm
Overload Range < 2000 ppm
Resolution 1 ppm
Accuracy abs./reading ± 5 ppm /

5% (0.- 500 ppm)

10% (> 500 ppm)
Response Time T90 < 40s

Electrochemical Sensor

H2S
placed on additional position
(depending on configuration)

Nom. Measuring Range 0 - 2000 ppm
Overload Range < 5000 ppm
Resolution 1 ppm
Accuracy abs./reading ± 10 ppm / 10%
Response Time T90 < 40s

Non-dispersive Infrared Measurement

CO

2

(NDIR)

Nom. Measuring Range 0 - 40 Vol.%
Resolution 0,01 Vol.%
Accuracy abs./reading ± 0,3 Vol.% / 3%
Response Time T90 < 35 s

Non-dispersive Infrared Measurement

CH

4

(NDIR)

Nom. Measuring Range 100 - 40000 ppm
Resolution 10 ppm
Accuracy abs./reading ± 400 ppm / 5%
Response Time T90 < 35 s

Temperature measurement T1, T2

Number of thermocouple type K input 2
Measuring Range -40 °C - 1200 °C
Accuracy ±2°C/ 0,5%

Flue gas temperature (using MRU probe) T

Measuring Range with high grade steel

A

0 - 800°C
probe pipe
Measuring range with Inconel probe pipe 0 - 1100°C
Accuracy abs. / reading ±2°C/ 0,5%

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USER MANUAL OPTIMA 7

Measured values Unit

O

2

CO [ppm]

CO [%]

NO [ppm]

NO2 [ppm]

SO2 [ppm]

Temp. Ambient air (Thermo-Element) [°C] [°F]

Temp. Flue gas (Thermo-Element) [°C] [°F]

CO [ppm]

Draft [hPa]

[%]

Available conversions of CO CO

[ ppm ] related to. on 0% rest O2(undiluted) X

[ ppm ] related to. on fuel type dependent O2refer-

X

ence value

[ mg/m3] X

[mg/kWh] X

[mg/MJ] X

[ mg/m3] on fuel type dependent O2reference value X

Continuously calculated values Unit

CO

2

[%]

Efficiency ETA [%]

Efficiency condensed [%]

Losses [%]

Losses condensed [%]

Lambda -

Dew point [°C] [°F]

CO/CO2 ratio [%]

Losses and efficiency are calculated by means of net calorific value.
These values are than referenced for the gross calorific value for con­densing boilers only. (Efficiency > 100)

The calculations of efficiency and exhaust losses are performed using

la.

For further information please contact MRU GmbH. ( )

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USER MANUAL OPTIMA 7

will be displayed for some seconds.
Now the request "Firmware found Install firmware?" appears.

NOTE

During the firmware update the red LED behind the con­densate separator (water trap) lights up constantly.

The file is now checked, for a few seconds a corresponding mes­sage appears
Then the display becomes dark for about 25 seconds
Then the analyser will reboot with the new firmware

Switch off the device again after the successful update.

The next time the analyser is switched on, all new functions will be
available.

How do I identify if the update was successful?

Go to the Extras menu.
Select Device info.

The menu Device info appears.
In the first line the new firmware version must be displayed. In this
example the new firmware version 1.74.00 appears.

What can I do if the old firmware version is still displayed?

Repeat the update process.

In case of error

What to do if there were problems with the update?

In case of an error, the red LED of the condensate separator flashes.
The inserted SD card was not identified then.
(Check that the SD card is correctly inserted and perform a reset by
pressing the ESC and ON keys simultaneously).

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USER MANUAL OPTIMA 7

not react after

tive, balancing

Remove probe from

device

probe / tube /

line, formation

of condensate

No measurement
possible

Measurement
without exact
temperature val­ues.

Wrong measuring
values

Temperature indica­tion:

- - - , - °C

Measuring range ex­ceeded:

Value O2too high

Values CO and CO

2

to low

Device cannot
be switched
on or does

being
switched on.

Battery dis­charge

Thermoele­ment defec-

network inter­rupted or not
connected.

Connection
probe
not correct.
Leakage at

condensate
separator,
pump does
not suck cor­rectly

Connect the device
to the line power in
order to charge the
battery.

Call our after-sales
service.

the gas duct and
condensate from
the probe tube.

Effect tightness
test!

By visual control of
probes, tubes con­densate separator,
leaking parts could
be found.

Wrong measuring
values

Gas temperature is
too hot or alternates

Probe is not
plugged in
correctly, de­fective cable
in the probe

at the probe
tip.

Check probe plug
respectively probe
line regarding dam­ages (loose connec­tion), remove con­densate from the
probe tip.

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USER MANUAL OPTIMA 7

12 Declaration of conformity

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USER MANUAL OPTIMA 7

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