tecora basic manual eng

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User Manual
Rev. 0.3 Eng.
june ’01

Isostack Basic – User Manual Page 2 di 55
INDEX Page
1 INTRODUCTION AND INSTALLATION 5
1.1 About the Emissions Isokinetic Sampling 5
1.2 ISOSTACK BASIC: Operating principles 5
1.3 Power Supply and Precautions 6
2 INSTRUMENT DESCRIPTION 7
2.1 Basic Equipment 8
2.2 Accessories and Spares part 8
2.3 Commands description 9
2.3.1 Keyboard 9
2.4 Connecting the Umbilical cable to the rear panel connectors 10
2.5 Sampling line configuration examples 11
2.5.1 Isokinetic Sampling line 11
2.5.2 Gas Sampling line 11
3 SYMBOLS AND RELATED MEASURING UNITS 12
4 Before to sample… 13
4.1 Initial preparations before to start the sample 13
4.2 Choosing the sampling point 13
4.3 Preliminary information about the emission characteristics 13
5 Sampling operation quick start 14
5.1 Preliminary operations 14
5.1.1 Turn on and AutoZero 14
5.1.2 Main menu 15
5.1.3 Set the Standard to be compliant with 15
5.1.4 Duct specifications settings 15
5.1.5 System Configuration 17
5.1.6 Leak Test 17
5.2 Preliminary velocity and flowrate measure 18
5.3 Isokinetic Sampling 20

5.3.1 Chose a nozzle using the “Nozzle Utility” Program 20
5.3.2 Start an Isokinetic Sampling 21
5.4 Operations during the sampling 22
5.4.1 New Sampling point 22
5.4.2 Pause during the sampling 22
6 SYSTEM CONFIGURATION 23
6.1 Turbulence Fattore “FT” 23
6.2 Manual setting of the fumes velocity “v’a” 23
6.3 Manual setting of the fumes temperature “Θa” 24
Isostack Basic – User Manual Page 3 di 55
6.4 Autozero 24
6.5 Simultaneous sampling with the derived line 24
6.6 End of sampling Pump ON 25
6.7 Pitot tube “K” Coefficient 25
6.8 Actual pressure “Pa” measure 26
7 OPERATIONAL TESTS 27
7.1 External measures 27
7.2 Leack check - Leak Test execution 28
7.3 Flowrate test 29
7.3.1 Automatic Test 29
7.3.2 Manual Test 29
8 SETTINGS 30
8.1 Date & Time 30
8.2 Method Selection 30
8.3 Default setup restore 31
8.4 Pitot Constant - Programming the Calibration Curve 31
8.5 Calibrations 31
8.6 New Password 31
9 DATA MANAGEMENT 32
9.1 Print the saved data 32

9.2 Last Sample 32
9.3 Calibration printout 33
9.4 Erase Memory 33
9.5 Built-in Printer 33
9.6 Serial Port 33
10 SAMPLING PROGRAMS - MENU START 34
10.1 Duct Flow rate Measure 34
10.2 ISO Sampling 35
10.2.1 Displayed parameters during the isokinetic sampling 35
10.3 Constant flow sampling 37
10.3.1 Constant flow at actual conditions 37
10.3.2 Constant flow at standard conditions 37
10.3.3 Cyclone Constant flow 38
10.3.4 1 Displayed parameters during the constant flow sampling 38
10.4 Ambient Sampling 39
10.4.1 Displayed parameters during the Ambient Sampling 40
11 PAUSE DURING THE SAMPLING 41
11.1 Change the Configuration parameters 41
11.2 Resume the sampling 41
Isostack Basic – User Manual Page 4 di 55
11.3 Modify the sampling time 41
10.4 Immediate stop of the sampling 41
12 MICROPOLLUTANTS PROBE THERMOREGULATORS SETTINGS (optional) 42
13 USED FORMULAE 43
14 PROBLEMS DURING THE OPERATIONS AND ALARM MESSAGGES 44
14.1 Power failure 44
14.2 Out of regulation 44
14.3 Gas meter temperature Alarm 46
14.4 The instrument resets during operations 46
15 TECHNICAL SPECIFICATIONS 47

15.1 Instrument 47
15.2 Sensors 48
APPENDIX A – FUMES WATER VAPOR CONTENT DETERMINATION 49
APPENDIX B - MOLECULAR WEIGHT DETERMINATION OF AN ANIDROUS GAS 50
APPENDIX C - CALIBRATIONS 51
Calibration procedure of the flowrate measure system 51
General Requirement 51
Standard flowrate meter systems 51
Calibration Check procedure using a direct reading reference flowmeter 51
Calibration check procedure using a reference dry gas meter 52
Temperatures calibration procedure 53
General requirements 53
Thermocouple sensor Calibration 53
Gas meter and Aux1 e 2 temp. (optional) temperature Calibration 54
Pressures Calibration procedure 55
General requirements 55
Absolute pressure calibration Pa/Pam on 2 points 55
Differential pressure calibration 56
Isostack Basic – User Manual Page 5 di 55
1 INTRODUCTION AND INSTALLATION
1.1 About the Emissions Isokinetic Sampling
A good acknowledgement about the processes which origin the stack gas streams and methods for the
particulate matter sampling and flowrate determination in emissions are required. If the suspended dust
is composed by particles which diameter is greater than 5 µm or if its concentration is greater than 5
mg/m
3
than it cannot be considered homogeneous thus the sampling must be executed with a certain
nozzle velocity defined as “ISOKINETIC”.
Isokinetism means that the sampling flowrate must be set so that the gas velocity entering the
sampling probe nozzle is equal (or as close as possible) to the gas velocity of the stack.

A nozzle gas velocity lower than the stack gas velocity cause an enrichment of coarse particles in the
sample because they enter the probe thanks to their dynamic force and without following the normal
laminar flow; the opposite happens when sampling at higher nozzle velocity respect to the stack velocity
condition. This is why the Isokinetic condition is very important, especially when a granulometric
determination has to be carried out.
The relationships between the gas stream fluid dynamics parameters (velocity, temperature, pressure,
molecular weight) and the sampling ones are solved using complex mathematics equations which can
lead to errors and then to incorrect measures. Moreover, the thermodynamic conditions can suddenly
change making the operator to correct the sampling flowrate often.
A particular attention should be dedicated to the position and distribution of the sampling points since the
gas flowrate isn’t always laminar and also because the particles granulometric distribution is never
uniform.
A sampling section ,possibly circular and vertical, as far as possible from obstacles that cause
turbulence is always advisable.
Execute the sampling with enough measuring point distributed along the diameter; ISO 9096, EPA and
Unichim recommendations give exhaustive explanations on this subject.
1.2 ISOSTACK BASIC: Operating principles
The automatic isokinetic sampler ISOSTACK BASIC has been realised in accordance with US EPA,
Unichim Standards and with the most recent international ISO 9096 Standard, to carry out stack gas
sampling in ISOKINETIC conditions.
Fumes are automatically sampled through the sampling probe nozzle at the same velocity they have in
the stack (isokinetic condition). Those adjustments are done automatically, without the need for the
operator to solve the complex relationships controlling the stack fluid dynamic conditions and the
sampling parameters.
Only if this condition is satisfied it’s possible to collect on a filtrating device, placed along the sampling
probe, a representative sample of particulate matter. Hot fumes are then convoyed to a cooling device
used to remove the fumes water content and cool them before they enter the sampling and control unit.
It’s possible to use the Isostack basic also for gases constant flow samplings in stack or use it in
combination with Cyclones for the particulate cut size sampling.
A dedicated software allows the Isostack Basic application also for ambient samplings.

Isostack Basic – User Manual Page 6 di 55
1.3 Power Supply and Precautions
For safety and good functioning reasons, the Isostack should be powered with a grounded and disturbs
free power supply.
Do not connect other instruments or devices to the power line where the Isostack Basic is connected in
order to avoid power short fall or even damages
The Isostack Basic’s power circuit is a double phases plus the ground with a protection fuse on each
phase and a ON/OFF bipolar interrupter with a power on lamp.
Power Supply:
220 Vac 50 Hz: From 202 to 253 Vac 50 Hz;
fuse 3.15 A delayed (5x20)
115 Vac 50/60 Hz: From 106 to 132 Vac 50/60 Hz;
fuse 6.3 A delayed (5x20)
The Isostack Basic is equipped with a internal battery and with electronic circuits protecting the sampling
if a power loss occurs, anyway, disturbs caused by improper electrical contacts may cause critical
functioning situations.
ii ATTENTION
A periodic recharge of the internal NiCd battery pack is needed to grant best performances, even if the
sampler is not used.
We recommend the battery recharge operation every 2 months of inactivity connecting the power supply
for at least 24 hours.
Attention: remove the instrument and its accessories from the package and check for physical
damages, in case you encounter any problem, contact us or your local dealer immediately.
Isostack Basic – User Manual Page 7 di 55
2 INSTRUMENT DESCRIPTION
1. Keyboard and backlight display
2. Built-in printer (optional)
3. Gas Dry Meter
4. Cover with lock
5. Thermoregulators for heated devices

(optional)
6. Power socket with lighted interrupter and
protection fuses
7. Vacuum meter for the in line pressure
indication
Rear Panel Connectors details
10. Gas inlet with protection filter
11. Actual temperature thermocouple connector (fumes)
12. RS232 Connector
13. Gas outlet
14. 2 ways ∆p Pitot and Pa/Pam Connector
15. Auxiliary Temperature connectors - Taux1 e Taux2 (optional)
16. Heated probe thermosetting connectors
7
6
5
3
1
2
4
13
16
12
14 15
11 10
Isostack Basic – User Manual Page 8 di 55
2.1 Basic Equipment
The Isostack Basic shipment includes:
Ö ISOSTACK BASIC sampler
Ö Quick connector for the gas inlet

Ö Raufilam  suction tube (5 meters)
Ö 1 Filter cartridge for the gas inlet
Ö Power cord
Ö n°2 x 3.15 A protection fuses
Ö RS232 cable
Ö Calibration cable
Ö User Manual
2.2 Accessories and Spares part
The instrument can be equipped with the following accessories or options
Options and Accessories P/N
Built-in Printer (located on the front panel) Cod. AA99-012-9902SP
2 thermoregulators for the thermosetting of the micropolluntants probe Cod. AC99-020-9900SP
N°2 PT 100Ω auxiliary connectors
Cod. AC99-020-9905SP
4 meters umbilical cable Cod. AC99-010-9900SP
8 meters umbilical cable Cod. AC99-010-9901SP
4 m thermoregulators to heated device connecting cable Cod. AC99-090-0091SP
8 m thermoregulators to heated device connecting cable Cod. AC99-090-0092SP
auxiliary temperatures probe Θaux1/2 (2.5 m cable length)
Cod. *******
Ambient temperature probe Θa (panel)
Cod. *******
Ambient temperature probe Θa with compensated cable (4 m length)
Cod. *******
Spare Parts
Inlet gas protection filters (set of 5) Cod. 99AC-011-0000CP
Printer paper roll (set of 4) Cod. AA99-012-9911CN
Printer ink cartridges (set of 5) Cod. 99AA-001-0000CP
Isostack Basic – User Manual Page 9 di 55
2.3 Commands description

2.3.1 Keyboard
The keyboard is located on the front panel, a sound alert you when a key is pressed and it features
alphanumeric keys and function keys as well. The following keys are present :
<ENTER> Accept the displayed settings and skip to the next step.
<MENU> Accept the displayed settings and go back to the previous step.
<NEXT> When entering data or settings, it move the cursor to the next field; During the data or
options display, this key scroll the window and let you explore the whole page.
<F1> Function key with the following actions:
• System Manager : when the instrument is in the pause mode, it let you enter the
Setup.
• During the setting, it changes the sign between + and –
• During the Date setting, it modify the Day setting
(1=Monday , 2=Tuesday 0=Sunday)
<F2> Key with the Pause function during sampling
∧∧ The up arrow key increase the flowrate or the vacuum level. You can increase with 1-10-
100-1000 rate in function of the keys number.
∨∨ The up arrow key decrease the flowrate or the vacuum level. You can decrease with 1-10-
100-1000 rate in function of the keys number.
<ABC> Alphanumeric keys – They are used to enter site identification data in the instrument that
will be printed in the measure summary. Their use is similar to the portable phones one,
pressing more than one time the same key, you change the letter you see on the key.
Pressing another key will move the cursor to the next field. To enter the same letter twice
or to move the cursor in the next field, press the NEXT key.
ISOSTACK BASIC Key pad
Isostack Basic – User Manual Page 10 di 55
2.4 Connecting the Umbilical cable to the rear panel connectors
Isostack Basic – User Manual Page 11 di 55
2.5 Sampling line configuration examples
2.5.1 Isokinetic Sampling line
2.5.2 Gas Sampling line

ISOSTACK BASIC
Sampler
Silica Gel Trap
Unichim type Gas probe
Impingers
Filterholder
Isokinetic Probe
Slide & Lock Device
ISOSTACK BASIC
Sampler
Silica Gel trap Cooling/Condensing device
Umbilical cable
Isostack Basic – User Manual Page 12 di 55
3 SYMBOLS AND RELATED MEASURING UNITS
To be compliant with to the International standard ISO 9096 “Stationary source emissions Determination
of concentration and mass flow rate of particulate material in gas-carrying ducts – Manual gravimetric
method” we have adopted the following symbology :
Symbol Description Measuring
Unit
Tg Gas Meter absolute temperature °K
Tn Absolute temperature = 273 °K
Θg
Gas Meter Temperature °C
Ta Measuring point absolute temperature °K
Θa
Temperatura al piano di misura °C
Pn Sea level average pressure (reference pressure)=101.3 KPa
Pa Measuring point absolute pressure KPa
Pam Ambient Pressure (achieved during autozero) KPa
Pal Max Pump compensation pressure in function of qVg KPa

∆pPt
Pitot Differential Pressure Pa
KPt
Pitot tube coefficient (KPt 1÷4)
v’a Stack gas velocity m/sec
v’N Nozzle gas velocity m/sec
ρn
Gas density at dry standard condition Kg/m
3
ρ’n
Gas density at wet standard condition Kg/m
3
ρ’a
Measuring point gas density Kg/m
3
M Gas Molecular Weight Kg/Kmol
rw Water vapor volumetric fraction
fn Water vapor contraction per m
3
at 0°C 101.3KPa conditions Kg/m
3
Vg Total Gas meter Volume m
3
Vgn Sampled gas volume at standard conditions m
3
Vdn Sampled dry gas volume secco at standard conditions, derived sampling m
3
V’ga Measuring point wet gas sampled volume m
3
Cg

Gas meter calibration constant (Cg1÷4)
-
qVg Volumetric dry flowrate at the gas meter l/min
qVgn Volumetric dry flowrate at the gas meter at standard conditions l/min
qVdn Derived dry gas flowrate at standard conditions l/min
q’Va Wet gas sampled flowrate at measuring point conditions l/min
q’Vn Sampled wet gas flowrate at standard conditions l/min
qVn Sampled dry gas flowrate at standard conditions l/min
Q’Va Stack gas flowrate at actual conditions m
3
/h
Q’Vn Stack wet gas flowrate at standard conditions m
3
/h
QVn Stack dry gas flowrate at standard conditions m
3
/h
A Duct measuring section m
2
a Internal nozzle diameter area mm
dN1 Internal nozzle diameter (formula measuring unit “m”) mm
d Internal stack diameter m
X Measuring point probe positioning distance cm
q’VN Volumetric wet gas flowrate at sampling nozzle l/min
ET Single point elapsed time hh:mm:ss
ETt Total elapsed time hh:mm:ss
ETd Total derived sampling elapsed time hh:mm:ss
Isostack Basic – User Manual Page 13 di 55
4 Before to sample…
4.1 Initial preparations before to start the sample

Both Standards and “local norms” give indications about the procedures to follows before to making
emission isokinetic samplings.
Short introduction to basic operations:
Ö Verify the apparatus and accessories before to go to the sampling location, check the integrity for all
the needed parts of the instrument, tubes, glass devices, Pitot tube and so on.
Ö Prepare, dry and weight the filter. If you are using the basket, fill it with 1 g of quartz wool.
Ö The filtering material should be compatible with the emission conditions (temperature…)
4.2 Choosing the sampling point
The sampling point should be chosen in a straight segment of the duct with a constant section and far as
possible from any flow perturbation generator both before and after.
Prepare the sampling stack port to be compatible with the probe slide and lock device.
In most of the countries, the stack port is standard so you need only to use the right adapter; in Italy, for
instance, the standard stack port features a M90 x 1.5 threaded ring; in alternation, it’s possible to use
the TCR Tecora Universal Flange which allows the connection with unified flanges with a 4” diameter or
5” PN2.5 ÷ 10.
4.3 Preliminary information about the emission characteristics
Before you start the sampling, you should know:
Ö Maximum predicted temperature ΘΘa, to verify it is compatible with the filter and probe specifications.
Ö Gas chemical composition, in relations to the probe material construction.
Ö Gas composition; expressed as one of the following characteristic:
• Gas density, dry at standard conditions ρn = Kg/m3
• Concentration, in volume of O2 e CO2 %
• Gas Molecular Weight, dry M = kg/Kmol
Ö Gas Water Vapor content; expressed as one of the following characteristic:
• Concentration at standard conditions fn = Kg/m3
• Molar Fraction rw = ( pure n° < 1 )
Ö Duct Internal dimensions:
• Circular: diameter, ports number
• Rectangular: port side length; lunge side length; port number
Isostack Basic – User Manual Page 14 di 55

5 Sampling operation quick start
5.1 Preliminary operations
5.1.1 Turn on and AutoZero
Turn on the instrument with the interrupter, the interrupter light should be on and a whistle should be
heard (this is due to the device controlling the flowrate setting valve engine).
Timed message lasting about 15 seconds, during this period,
the ISOSTACK BASIC make a self functional test.
Timed message lasting about 99 seconds with the countdown
displayed on the screen, it’s needed for the sensors stabilization.
This operation can be aborted in any time pressing the <MENU>
key.
The instrument serial number and program version will also be
displayed in this screen
Finished the stabilization, it’s possible to proceed with the
pressure sensors autozeroing. We suggest to allow the
instrument a long stabilization time (about 5/6 minutes) before to
do the autozero.
Before pressing the <ENTER> key, disconnect the Pitot tube
pneumatic connector on the rear panel of the ISOSTACK
BASIC
<ENTER>
Temporary message appearing during the autozero operation.
Main screen with the time and date indication.
Sampling Unit
ISOSTACK BASIC
TCR TECORA
ITALIA
ISOSTACK B 024065CP
program : ver 1.4b E
AUTOTEST in prog 99

please Wait ! <MENU>
** A U T O Z E R O **
disconnect Pitot
tube signal
<ENTER>
AUTOZERO
system busy
about 35 seconds
please . . . WAIT
* ISOSTACK Basic *
system ready
aa-mm-gg HH:MM:SS
enter Command
Isostack Basic – User Manual Page 15 di 55
DUCT SELECTION : 2
<1> Circular
<2> Rectangular
<3> Site
Rectangular Section
Port side : 1.00000 m
Deep side : 2.00000 m
# Port : 02
5.1.2 Main menu
Pressing the <NEXT> key in the starting screen, you reach the main menu display of thr ISOSTACK
BASIC.
<NEXT>
To enter the desired menu, press the <n°> key corresponding to the menu, even if it isn’t present in the
screen.
5.1.3 Set the Standard to be compliant with
From the Main Menu select <6> Settings and then <2> Method

selection
Scroll the display “Standard” using the <NEXT> key and select
the norm you to satisfy for the measuring points determination.
The number on the side of the header “STANDARD” indicate the
actual selection.
Notes :
ISO 9096 C.P. : means measure with also the central point
ISO 9096 no C.P. : no central point
ISTISAN e UNICHIM are equivalent
After the selection, press the <MENU> key to go back to the Main Menu
5.1.4 Duct specifications settings
From the Main Menu, select <2> DUCT SELECTION
Chose the duct section (for instance : <2> Rectangular)
<2>
Enter the section dimensions and the available port number
<NEXT> Move the cursor
<ENTER> Enter the value
When finished, press the <MENU> key to go back to the previous
screen.
<MENU>
MAIN MENU
<1> START
<2> DUCT SPECS
<3> TEST
MAIN MENU
<4> CONFIGURATION
<5> DATA MANAGER
<6> SETTINGS
SETTINGS
<1> Date and Hour

<2> Method selection
<3> Default setup
METHOD : 3
<1> ISO 9096 C.P.
<2> ISO 9096 no C.P.
METHOD : 3
<3> EPA
<4> ISTISAN
Isostack Basic – User Manual Page 16 di 55
Selecting <3> Site, it’s possible to enter a name or site
identification for the measure, this will be useful when you will
manage the samplings collected data
<3>
Enter the informations using the keyboard as normally done for
the portable phones.
<ENTER>
Only selecting EPA Method you have to insert the up and down
stream flow disturbance distance in meter.
<ENTER> Then press the <ENTER> key to enter the Gas Specifications
Menu
You can enter one of the following gas specifications using one of
this 3 expressions.
For further informations about the dry gas determination, see
the Appendix B.
<ENTER>
Enter the water vapor content using one of the following
conditions :
rw = stack gas water vapor volumetric fraction; is a number
always lower than 1; if the water vapor percentage is 13% then
the rw is 0.13

fn = water vapor concentration expressed in kilograms per cubic
meter at standard conditions (101.3 KPa, 0° C).
Note : For further information’s about the water vapor
determination, see the Appendix A.
The value indicated by the cursor when you press the <ENTER>
key is the one which will be used by the instrument.
The other value will be automatically calculated and updated.
The values entered in the “duct specifications” menu will be
retained in the memory until you modify them.
In case you will have to work again on the same stack you don’t
need to enter the data again.
DRY GAS
<1> Molec. weight
<2> Density
<3> Composizione
WATER CONTENT
standard condition
rw = 0.10
fn = 0.0804 Kg/m3
DUCT SELECTION : 2
<1> Circular
<2> Rectangular
<3> Site
Site : WASTE
INCINERATOR K 150
<ENTER> Save
Flow disturbance
Up str. = 7.50000 m
Dw str. = 1.80000 m
Isostack Basic – User Manual Page 17 di 55

5.1.5 System Configuration
From the Main Menu chose <4> CONFIGURATION
The first parameter is the Turbulence Factor FT.
The turbulence factor is a number between 1 and 99 which
allows the duct gas velocity (v’a) data averaging before to update
the pump working flowrate
This option is useful to stabilize the sampling when turbulent
flows are present.
The velocity measure time is 3 seconds; setting FT = 5 means
that v’a will be updated every 5 seconds
Default FT value = 5
The standard configuration is indicated for samplings with
standard sampling lines (as described in par. 2.5)
For further informations about the dry gas determination, see
the chapter 6 System Configuration.
<MENU> When finished, press the <MENU> key to go back to the previous
display.
5.1.6 Leak Test
The leak test allows the automatic detection of the global leakage the entire sampling line, pump
included.
This operation is requested from both EPA and ISO9096 Methods
Before to proceed with the test, we suggest to read the paragraph 7.2 Leak Test of this manual.
Turbulence Factor
num. Cycle = 05
Isostack Basic – User Manual Page 18 di 55
5.2 Preliminary velocity and flowrate measure
If the fluid dynamic parameters of the emission are unknown, a velocity and temperature measurement
is needed to detect the nozzle which better fit the sampling, this operation can be carried out with a full
flowrate measurement following the methods or with testing few measuring points.
In the example, a full flowrate measurement will be done.

During the flowrate measure you have to avoid to collect the dust inside the nozzle, tap the nozzle or
point it to the opposite side respect the gas stream.
Ö Insert the probe in the duct fixing it with the slide and lock device.
Ö Verify the connection of the umbilical cable.
Ö Verify that the Pitot tube is oriented correctly respect the fumes direction; use the thermocouple fixing
plate placed on the external side of the probe as reference, if the duct is vertical and the gases go
up, the fixing plate must be facing down.
In the Main Menu, select <1> START
and then <1> Duct flow rate
On the display will appear the dimensions and section of the
duct, for instance, CS (circular section) diameter 1 mt
Those values cannot be modified since are the ones entered in
the duct specifications menu
<ENTER>
The following message allows you to chose the method
compliance operations or perform a user customized measure.
For the example we will chose to operate in compliance with the
method.
<1>
In relation to the method, the minimum number of points for each
diameter is indicated; the operator can modify this number.
If a lower number of points has to be done, 4 points for instance,
it’s important you set the 4 in the menu to allow the Isostack
Basic to calculate the correct position of each 4 points for a better
mean velocity and then flowrate determination.
<ENTER>
The first measure point will appear on the display with those
values:
B 01 = Port nr. 1
P 01 = Measuring point nr. 1

X = Point distance from the stack internal wall.
<1> Duct flow rate
<2> ISO Sampling
<3> CF Sampling
<4> Ambient Sampling
DUCT FLOW RATE à Sc
Diameter : 1 m
Turbulence Fact. : 05
Sampling Point
Location
<1> Meet standard
<2> Customized
EPA à SC
Measuring Points
for diameter
Min : 06 Sel : 04
B01 P01 x = 6.7 cm
v’a = 17.03 m/sec
Θa = 89.67 °C
<ENTER> str <MENU> esc
Isostack Basic – User Manual Page 19 di 55
Ö Place the probe nozzle at the indicated distance.
Ö Read on the display the indicated v’a and Θa values.
Press the <ENTER> key to start the measure, it will take about
30 seconds.
At the end of the measure, the data will be automatically saved.
In relation to the port and points number attributed to the duct,
the same cycle will be updated for the B, P and X values.
It’s possible to stop the measure in any point pressing the
<MENU> key and achieve the measure report including the

flowrate determination.
Repeat the operation until you reach the end of the measure
points, a data saving request will appear on the display. If the
instrument is equipped with the printer, a hardcopy of the
measure final report will be printed
It’s possible to display the measure report selecting <5> DATA
MANAGER in the Main Menu and then <2> Last sample.
Measure in progress
ET 00:00:07
v’a = 17.03 m/sec
please . . . WAIT
B01 P02 x = 25
v’a = 17.69 m/sec
Θa = 92.47 °C
<ENTER> str <MENU> esc
Save Data ?
<MENU> - No
<ENTER> - Yes
LAST SAMPLE
Q’Va = 48098.5 m
3
/h
Q’Vn = 45528.5 m
3
/h
QVn = 40975.6 m
3
/h
Isostack Basic – User Manual Page 20 di 55
5.3 Isokinetic Sampling

From the Main Menu chose:
<1> START
and then
<2> ISO Sampling
In relation to the stack fluid dynamic parameters, select the nozzle which better fit the sampling in order
to work in the best conditions also in relation to the pump characteristics.
To simplify the nozzle selection, the Isostack basic include a routine called “Nozzle Utility”
5.3.1 Chose a nozzle using the “Nozzle Utility” Program
To access the program select
<1> Run
The default values are taken from the previous measurement.
If they have changed, you must enter the v’a, Θa and Pa.
<ENTER>
On the display :
- Theoretic nozzle diameter
- Pump flowrate value “qVg“ to satisfy the isokinetic condition.
- Max sampling line absolute pressure “Pal” at which the pump
can correctly operate that specific flowrate.
Selected nozzle 5 mm
<ENTER>
It’s possible to change the nozzle diameter many times until you
find the one matching your application.
Note: When a normal sampling line is used, we suggest to work
with a qVg between 15 and 25 l/min.
<MENU> When finished, press the <MENU> key to save the diameter.
Ö Mount the selected nozzle on the sampling probe and place the probe at the 1° sampling
point.
<2> To proceed in the sampling setup
<1> Duct flow rate
<2> ISO Sampling

<3> CF Sampling
<4> Ambient Sampling
NOZZLE Utility
Diameter : 6.00 mm
<1> Run
<2> Skip
Stream parameters
v’a = 17.03 m/sec
Θa = 91.53 °C
Pa = 100.3 kPa
Nozzle = 4.89 mm
qVg = 13.667 l/min
Pal = 47.079 KPa
<ENTER> cal <MENU>esc
Ugello = 5.00 mm
qVg = 16.287 l/min
Pal = 55.979 KPa
<ENTER> cal <MENU>esc
Isostack Basic – User Manual Page 21 di 55
5.3.2 Start an Isokinetic Sampling
The duct type and section dimensions will appear on the screen,
for instance Circular section 1mt diameter, and the programmed
Turbulence Factor.
<ENTER> After you press the <ENTER> key, the sampling will start and the
regulation valve of the instrument will be activated setting a
flowrate as close as possible to the one needed to satisfy the
isokinetic condition.
Grid following the Rule.
The next screen allows you to follows the rule as regard the
sampling point positions or do the sampling at your discretion.

We will chose <1> Meet standard.
<1>
Similarly to the flowrate measure, when we follow the rule, the
minimum sampling points number for each diameter is indicated.
Anyway, this number can be changed.
On the display will appear the first sampling point.
Press <NEXT> to activate the cursor and modify the sampling
time (Note : the minimum sampling time suggested is 5 minutes
with a turbulence factor FT lower than 10) and proceed as
follows:
Ö Place the probe to the indicated distance
Ö press <ENTER> to save the sampling time
Ö <ENTER> again to start the sampling.
Grid at your Discretion
Selecting <2> Customized, the minimum sampling points will
not be indicated.
Pressing <NEXT>, the cursor moves in the B , P and x fields,
is now possible to enter different values and save them. In this
way the printed report will contain the exact informations about
the sampling points.
When finished, press <ENTER>
Ö Press <NEXT> to activate the cursor and change the sampling time and then :
Ö Place the probe to the indicated distance
Ö press <ENTER> to save the sampling time
Ö <ENTER> again to start the sampling
The most important parameter are displayed on the screen during the sampling operation, for further
informations about the displayed data see the Chapter 10.2.1 Displayed parameters during the
isokinetic sampling of this manual.
ISO SAMPLING à Sc
Diameter : 1.00 m

Turbulence Fact : 05
Sampling Point
Location
<1> Meet standard
<2> Customized
EPA à SC
Measuring Points
for diameter
Min : 06 Sel : 06
B01 P01 x = 4.4 cm
Lapsed time 00:30
<ENTER> Sampling
<MENU> Esc
Sampling Point
Location
<1> Meet standard
<2> Customized
B01 P01 x = 3.0 cm
<ENTER> Sampling
<MENU> Esc
Isostack Basic – User Manual Page 22 di 55
5.4 Operations during the sampling
5.4.1 New Sampling point
When the 1° measuring point is finished, the display will show the indications to place the probe to the
new sampling point.
If the instrument is equipped with the printer, the 1° point data will be printed.
After you have placed the probe, press <ENTER> to proceed
with the new point.
Ö To stop the measure and generate the sampling report, press the <MENU> key.
When the measure is finished, you will be asked to save the

measure.
If the instrument is equipped with the printer, the final report will
be printed
It’s possible to display the measure report selecting :
<5> DATA MANAGER
and then,
<2> Last sample.
Press <NEXT> to scroll the data screens
5.4.2 Pause during the sampling
Press the <F2 / PAUSE> key during the sampling the operation enter in Pause mode and you will have
the following options:
<F1> to access the configuration menu with the possibility the
change the following settings:
Ö Turbulence Factor FT
Ö Pitot tube differential pressure Autozero
Ö Constant v’a
Ö Derived Sampling ON/OFF
Ö Pump ON/OFF
<F2> Resume the sampling
<NEXT> to modify the current set sampling time.
<MENU> to stop definitively the measure and generate the
report
B01 P02 x = 14.6 cm
Lapsed time 00:30
<ENTER> Sampling
<MENU> Esc
Save Data ?
<MENU> - No
<ENTER> - Yes
LAST SAMPLE

v’a = 17.03 m/sec
ET 02 : 00 : 00
DI = 1.53
<F1> Config.
<F2> Resume
<NEXT> Change Time
<MENU> End of Sampl.
Isostack Basic – User Manual Page 23 di 55
6 SYSTEM CONFIGURATION
From the Main Menu, press <4> CONFIGURATION to enter the
configuration menu where important sampling parameters and
option can be changed.
6.1 Turbulence Fattore “FT”
The Turbulence Factor is a number between 1 and 99 which
allows the duct velocity value v’a averaging before to update the
pump working flowrate.
This option is particularly useful to stabilize the sampling if
turbulent flows are present.
A high FT doesn’t mean a less precise measure, if turbulences are present, it’s far better the isokinetism
correction on a long time basis instead of following quickly an unstable velocity; keep in mind that
between the v’a measure and the flow correction at least 3 seconds are needed while the variations due
to turbulences are faster.
The velocity measure interval is 3 seconds; setting a FT of 5 means that the v’a value will be updated
every 15 seconds. Default value: 5
Note : Enter a FT value to obtain an updating time (FT x 3) lower than 1/10 of the sampling time of each
sampling point, for example, setting a FT=10 the suggested minimum sampling time is 5 minutes.
6.2 Manual setting of the fumes velocity “v’a”
This function allows to set in the instrument a fumes velocity value in the manual mode, and then, to
adjust the isokinetism without considering the informations coming from the Pitot tube.
The use of this function become essential when the turbulence condition during the sampling doesn’t

allow the measure and the automatic operation even if high turbulence factors are used.
It’s possible to turn on and off this function in any moment during the sampling pressing the <F2-
PAUSE> key and accessing the configuration with <F1>.
Turn on the function pressing <1> ON
Press <NEXT> to activate the cursor and then enter the desired
velocity value.
MAIN MENU
<4> CONFIGURATION
<5> DATA MANAGER
<6> SETTINGS
Turbulence Factor
num. Cycle = 05
v’a costant : 1
<0> OFF <1> ON
enter v’a
v’a = 15.5 m/sec
Isostack Basic – User Manual Page 24 di 55
6.3 Manual setting of the fumes temperature “ΘΘa”
This function allows to set in the instrument a fumes temperature value in the manual mode, and then, to
adjust the isokinetism without considering the information coming from the thermocouple.
The use of this function is particularly useful when strong EMF are present (for example close to
electrostatic filters) because the thermocouple acts like an antenna and lead the noise into electronic
board of the instrument generating a possible fault of the instrument.
It’s possible to disconnect the thermocouple and to turn on this function in any moment during the
sampling pressing the <F2-PAUSE> key and accessing the configuration with <F1>.
Turn on the function pressing <1> ON
Press <NEXT> to activate the cursor and then enter the desired
velocity value.
6.4 Autozero
This function executes the autozeroing of the Pitot tube differential pressure sensor.

It can be accessed in any moment during the sampling pressing the <F2-PAUSE> key.
The Autozero function recovers the pressure sensor drift and increase the low velocities measure
precision.
Before pressing the <ENTER> key, disconnect the pneumatic
connector of the Pitot tube located on the rear panel of the
Isostack Basic.
6.5 Simultaneous sampling with the derived line
If the application ask for a simultaneous sampling on a derived line, the working flowrate set on the
derived sampler must be entered in the Isostack basic.
When this option is actived, the Isostack Basic subtract from the theoretic sampling flow the one of the
derived sampling at standard conditions.
It’s possible to activate or deactivate this option also when in pause mode during a sampling.
Select <1> ON to activate the simultaneous sampling.
Enter the flowrate at Normalized conditions of the derived
sampler, for instance 2.0 l/min.
A U T O Z E R O ?
<NEXT> Escape
<ENTER> Execute
Simultaneous Gas
Sample : 1
<0> OFF <1> ON
qVdn = 2.00000 l/min
Θa costant : 1
<0> OFF <1> ON
enter Θa
Θa = 187 °C
Isostack Basic – User Manual Page 25 di 55
6.6 End of sampling Pump ON
This function force the pump to continue to work when the each programmed sampling point ends.
When the programmed time is over, a warning message appear

alerting the operator about the end of the sampling point and
prompting to place the probe to the next distance.
After you have placed the probe to the next point, press the <ENTER> key to start with the new
countdown.
In this way it is possible to move the probe and close the report as the sampling point is finished and
also start the new point without interrupt the sampling operation
This operative mode avoid the error due to the dust collection into the nozzle caused by its
inertia when the pump stops (particulate collection without considering the volume increase).
6.7 Pitot tube “K” Coefficient
It’s possible to select the Pitot tube calibration factor to be used.
The default values are:
<1> K = 0.84 average coefficient of the TCR TECORA Isokinetic
probe S type Pitot tube.
<2> K = 1 average coefficient of the classic Pitot tube.
To program the calibration curves of the Pitot tubes see the chapter. 8.4 Pitot Constant of this manual.
Coefficient : 1
<1> Pitot # 1
<2> Pitot # 2
On / Off Pump
end of sampling
Pump : 0
<0> OFF <1> ON