Swema 3000 User manual

Swema AB Pepparvägen 27 SE-123 56 FARSTA
Tel: [phone] Fax: [phone] [email protected] www.swema.se 1
Manual for Swema 3000
Version 16.09 5.31

Swema AB Pepparvägen 27 SE-123 56 FARSTA
Tel: [phone] Fax: [phone] [email protected] www.swema.se 2
Content
1. Overview............................................................................................ 3
2. Mounting of holder............................................................................ 4
3. Read this before you begin.............................................................. 5
4. MENU 1............................................................................................... 7
5. MENU 2............................................................................................... 8
6. MENU 3............................................................................................... 9
7. Diferent probes for Swema 3000.................................................... 10
8. Swema 3000’s different programs...................................................12
8.1 AP (Average Point) ........................................................................................ 13
 8.2 APF(AveragePointFlow)-Airowinchanelandwitharea....................14
 8.3 DPF(DifferentialPressureairFlow)-AirowwithK-factor......................16
 8.4 DPK(DifferentialPressureK-faktor)-K-factorwithairow......................17
 8.5 AF(AverageFlow)-Airowwithspigot......................................................18
 8.6 BP(BackPressure)-Airowwithcompensatedspigot.............................19
8.7 AS (Auto Sampling) - Sampling of readings................................................. 21
 8.8 ASF(AutoSamplingairFlow)-Samplingwithcalculatingairow...........22
 8.9 CO(Comfort)-Tensileindexcalculation......................................................24
8.10 LOG - Logging of readings............................................................................. 25
 8.11 LOGP-Loggingofprotocol...........................................................................26
9. Measurement units showed for different measurement............. 27
10.NoteBook,LoggingsandFiles....................................................28
11. SwemaTerminal 2 (PC-Program)................................................... 29
12.Timeconstantandlter.................................................................30
13. Display view and saving of measure values............................... 30
14.TechnicalData................................................................................ 31
15. Theory.............................................................................................. 35
15.1 CalculatingK-factor.......................................................................................35
 15.2 Necessarystraightsbeforeandaftermeasurementplan..........................35
 15.3 Recommendedmeasuringpointschannelmeasurement.........................36
 15.4 ValuesofK2-factor.........................................................................................37

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1. Overview
Display
Function keys
Arrow Key
Enter Key
Display
On / Off
Probe connector
RS232/SwemaTwin connector
USB connector
Battery hatch 2 x AA Batteries
Description of Func-
tion keys

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2. Mounting of holder
Start by remove the rubber list by grabbing it with the fngers. Push the list approximately 1 cm to
the oppening and pull out the list.
Remove the the list by pull it out. When the list has been removed you can place the holders by
placing it in the opening and pull them to a suitable place.
Now, you can place the sensor. (The image shows a SWA 10 wth a holder)

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3. Read this before you start
Swema 3000 is an universal instrument for measurement of air speeds, air ows, drafts, air humi-
dity, temperatures and differencial pressure. Swema 3000 has a large computing capacity and you
are able to store single or calculated measurement in the memory for print to PC.
Models:
Swema 3000: Basic model
Swema 3000md: Built-in differencial pressure transmitter (-300... 1500 Pa) as well as Built-in baro-
meter & thermo coupple contact. Type-k for density compensating.
Swema 3000mdH+: As Swema 3000md but with a larger differencial pressure area (±10.000 Pa).
Start-up of Swema 3000:
At switch-on of the instrument, it shows an information box within some seconds. Where it shows
which model of Swema 3000 it is, which software version (Firmware) the instrument has as well as
the battery voltage (less than 2.0V the instrument wil shut down itself). If you have a sensor con-
nected, you will also see which type of sensor it is when the calibration comes out as well as the
serie number on the probe (does not apply relative humidity/temp sensor). If you would like to see
the infromation box, a longer time than the seconds shown, then hold the on/off key while switch-
on, the window disappears when the key is realesed.
Sensor:
Swema 3000 has totally replacable sensors which is and separately is, individually calibrated.
When you switch on the instrument with a sensor connected, the Swema 3000 shows the measu-
rements for the current sensor.
When you have or for the rst time connected a sensor the instrument does always choose the
default program to the current sensor. Furthermore, the Swema 3000 reads in the calibration and
only does the program available which is current for this particular sensor. Swema 3000 has a
memory for the two last probe types and the intern probe. It remembers which setting you lastly
used when you were using the probe with, in other words mode, time constant and the number of
decimals are the same as the last time you used the probe.
Switchbetweenbuilt-inandexternsensor:
With the Swema 3000md/mdH+ it is able to change bet-
ween an extern built-in sensor and the built-in differencial
pressure sensor with the EXT/INT-key(Function-key to
the far left, see image to the right).
When you are using the built-in differencial pressure
sensor is ”EXT.” going to be shown on the display, where
it means that if you would like to measure with the extern
connected sensor should the EXT-key be pressed. The
key will now change name to ”INT.” (Intern), press it to
measure with the built-in differencial pressure sensor.
If an extern sensor is connected, the instrument will always go to its measuring position at start-up,
if you would like to come to the built-in differencial pressure sensor directly, the extern sensor has
to be connected before the start of the instrument.

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Measure with Swema 3000:
If a sensor is connected to the Swema 3000, it will always be directed to
mode after start-up of the instrument. In the mode (i.e. that you are not
inside one of the menus to change setting) it is shown the actual mode from
the sensor on the display.
By pressing the ENTER-key a measurement can start and depending on
which installed mode, it will save the mode to a temporarily memory, a cal-
culation is made or a start of a logging of measurement values.
At mode where measure points are collected, the Swema 3000 shows
mean-, max-, min-value and total measurement points collected. To take
another measurement to e.g. see mean calculation press ENTER again.
Modes:
Swema 3000 helps you to calculate and work in the correct way when you use the different mo-
des. The differemt sensors that exists to Swema 3000 have sometimes their own modes, e.g. for
the differencial pressure sensor the measurement mode DPF (Differencial Pressure air Flow).
Swema 3000 knows which sensor connected and suits the modes so it is suitable to that sensor
type, e.g. DPF is not (Differencial Pressure air Flow) available for a hot wire anemometer.
There are different general modes that you can use in every single sensor: AP (not SWA 03), AS
and LOG.
Function-buttons:
The lower part of the display is divided into 3 squares, and precisely under these squares does 3
function-buttons exist. The function of the buttons depends and this is described in the 3 squares
above.
Change setting and movements in the Menus
To change mode or setting press Menu1 (Function key to the right in mode). Swema 3000 has 3
different menus for different settings. Use UP/DOWN-arrows to move in the Menus and to switch
between the alternatives you have if would like to change something. If something should be chan-
ged press ENTER, right ARROW or SELECT (right Function-button). Use UP/DOWN arrows to
change/set alternative. If you would like to reset main settings, press MAIN (middle Function-but-
ton). When your setting is complete press ENTER, left ARROW or EXIT (left Function button). To
come back to measure mode press EXIT.
Swema 3000 in measu-
rement mode.
Save measurements:
When all the measurement values have been collected, you can choose to save them (press
SAVE) or delete the measurement (press CLEAR).
If it saves the instrument’s measure will the measurement be stored in the rst available memory
place in ”Note Book”. Swema 3000 gives a short signal and shows which memory place the mea-
surement was saved. (see NoteBook,LoggingsandFiles for more information).
OBS!IfSwema3000d/md/mdH+,withbuilt-inbarometerandthermocoupplewillthevalues
beinmean,max&mincalculatedfromwhatthetemperatureandthebarometerwereat
everysinglemeasurementpoint.Ifyoulatersavethemeasurementvalues,onlythemean
willbesavedfromthetemperatureandtheairpressure.Themeanisusedlatertocorrect
thevalueswhoisshownintheprotocol.

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4. MENU 1
Timeconstant, in other words the decrease or the inertia on
the instrument (see TimeconstantandFilter for more infor-
mation).
Atmosphericpressureis used when Swema 3000 does cal-
culations for air velocity and air ow.
Swema 3000 is available in three different models, Swema
3000d with a built-in barometer, Swema 3000md with built-in
barometer and differential pressure probe or Swema 3000
without barometer and differential pressure sensor.
In Swema 3000, the atmospheric pressure can be set manually
by moving the marker to ”Atmos.P” with the UP/DOWN-arrow
key. Press ENTER or SET and set the atmospheric pressure
with the UP/DOWN-arrow and with the LEFT/RIGHT-arrow key.
Conrm your choice with ENTER or EXIT.
Swema 3000md / mdH+ automatically compensates for the
air density. To turn of the automatically compensation for the
barometric pressure and set it manually set ”Atmos.P” to ”M”
(Manual) instead of ”A” (Automatic).
Temperature is used when Swema 3000 does calculations for
air velocity and air ow at calulation with a differencial pressu-
re sensor. Swema 3000d/md/mdH+ has the ability to connect
an extra temperature sensor (termometer sensor type-K).
If a termometer sensor is connected does it reach the built-in
differencial pressure sensor in Swema 3000md/mdH+. It is
used so it compensates Swema 3000 automatically for the
temperature the termometer sensor measure.
OBS! The Termometersensormustbeconnectedatstart-
upoftheinstrument.Ifitisnotconnectatstart-up,the
instrumentwillnotndthetermometersensor.Iftheter-
mometersensorisdisconnectedwhiletheinstrumentis
on,thetemperaturewillshow-270°Cuntiltheinstrument
isrestartedandtheriskoferrorcompensationoccurs.
If no termometer sensor is connected or at calculating with
Swema 3000 (has no termoelement connector) the tempera-
ture can be manually installed by moving the mark to ”Temp.”
with the UP/DOWN-arrows. Press ENTER or SELECT and
choose temperature with the arrows. Conrm your choice with
ENTER or EXIT.
OBS!Ifasensorwithanowntemperaturesensoriscon-
nected(hotwireanemometer,airowprobe,tensile
sensor,andrelativehumidity&temperaturesensor)it
will always use the temperature as the sensor measures
forcompensations.Ifathermocouppleisconnectedor
thetemperatureischangedmanually,itwillnotaffectthe
measurement result.
Highlight the parameter you want to
change and press Enter or SET.
Change the parameter with the arrow keys
and press Enter or EXIT to conrm.

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Menu 2
Swema Twin ON or OFF
Only when you us SwemaTwin, set ON at
your master unit
Communication USB or RS232
Communicate via USB (cable 764.430) or
RS232 (cable 759.030) to your PC.
Baud Rate 2400, 4800, 9600, 19200 or 57600
Normally 4800 for SwemaTwin, 9600 for
PC-transfer (RS232 cable).
Add Flow ON or OFF
If set to ON. Swema 3000 will add the
ow from each measurement in one le
and present a total ow.
Protocol SHORT or LONG
Here you specify if you want a long or
short protocol (note) at PC-printout.
1UnitDecimal 0, 1, 2, 3 or 4, Select number of decimals
for the big digits. The number of decimal
on the display will be acording to what
you choose here until a fth digit is
needed. The display can only show four
big digits on the same row at the same
time. Because of this one decimal will
disapper. When saving a measured
value the number of decimal will be
the same as shown on the display.
2UnitDecimal 0, 1 or 2, Select number of decimals for
the small digits
Auto Zero ON or OFF
When you have a SWA 10 pressure probe
connected or uses a Swema 3000md you
can choose automatic zeroing when you
collect values.
K2Factor ON or OFF
Set ON if you want Swema 3000 to calcu-
late with a k2-factor. See APF mode.
ON: Flow = air velocity * k2* area
OFF: Flow = air velocity * area
Exponent Change exponent (ε) in the formula for K
factor measurement. q = k • ∆Pε
Move in the menu with the up/down arrow
keys. Press Enter, Set or right arrow key to
select.

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Menu 3
Time/Date Set clock/date
AdjustClockSet a value to compensate the clock error
Auto off Set the automatic shut down time
Unit System SI or US
Set which units you want to use Metric
(SI) or American (US).
Contrast Set display constast
Print Out Select if you want comma or point separa-
tion at PC-print out. Excel uses either
comma or point.
Language English, German, Swedish, Finnish,
French, Danish, Norwegian, Dutch or
Polish.
Set the language you wuold like to use. Change with the up/down arrow keys.

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The different probes for Swema 3000
Hot Wire Anemometers
SWA 31 or SWA 31E. Ø 8...10mm, 66 cm long,
SWA 31E extendable up to 116 cm.
0...10 m/s (option 10...30 m/s) and temperature -20...80°C.
Possible measuring modes: AP, APF, AS, ASF, LOG and LOGP.
Extend the probe to the desired length.
Both holes must be clear for air to pass.
OBS!Donotpullthecabletoclose
probe.
Orientation advice: Turn the arrow so
that the mark on the bottom part
of the telescope stem points in the
same direction as the arrow.
The air velocity measurement can be
inuenced by how the holes are
located in the ow. See graph.
Differential pressure
SWA 07: ±7000Pa,
SWA 10 and Swema 3000md: -100...1500Pa.
SWA 10 has a built in valve that automatically zero checks the pressure.
Possible measuring modes: APF (with pito static pipe), DPF (k-factor),
AP, AS and LOG.
It is important to show zero pressure at the actual zero pressure.
Otherwise there will be an offset inuencing all measurements.
The differential pressure probes SWA 07 and 10 and Swema 3000md can be zeroed to display
zero when no pressure is connected. Press the ZERO button when no pressure is connected.
The probe is zeroed for this position. Do not change position when measuring.
Auto Zero ON with SWA 10 or Swema 3000md/mdH+
SWA 10 and Swema 3000md has an inbuilt zero valve. Auto Zero is set to ON by default.
By the built in valve the zero pressure point is automatically checked every time you take a
measurement by pressing ”ENTER”. When working in this way you never need to calibrate zero
manually. Warning: Zeroing may take long time: time constant + 3 sec. If a 4 second time constant
is selected it will take 7 seconds to take a measurement.
Auto Zero OFF with SWA 10 or Swema 3000md
With Auto zero Off no zero check is done automatically. The measurement takes shorter time. Due
to very stable zero point zero checking is sometimes not needed.
See Menu2 to select Auto Zero ON or OFF
SWA 10 has a small position dependence of ±0,3Pa. When you use Auto Zero On and hold the
SWA 10 in rm position during zero point checking this error disappears.
The SWA 07 is sensitive to tilting in the longitudinal direction, a 90° tilt producing a change of 4-5
Pa. It is recomended to use the SWA 07 with the magnet holder Art. No. 760.020. SWA 07 is sen-
sitive for temperature schocks. Avoid holding your hand on the SWA 07. Temperature changes of
this type will cause zero drift that may take 1-2 minutes to dissappear. The temperature compen-
sation works for slow changes. It is possible to log over several hours with minimal zero drift.

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Flowcaptures
SwemaFlow 65: 2...65 l/s,
SwemaFlow 125: 2...125 l/s and
SwemaFlow 2000: 4...900 l/s.
Possible measuring modes: AF, BP (only with SWF 125), AS, LOG and AP.
Draught probe
SWA 03: 0,05...3,0 m/s (omni directional) and 10...34°C.
SWA 03 fulls ISO 7726.
Possible measuring modes: CO, AS, LOG and LOGP.
Relative humidity and temperature
All probes 0....100%RH
Temperature: HygroClip2-S -40…..200°C depending on sensor
Possible measuring modes: AP, AS and LOG.
Temperature
Black globe, SWA 53, SWT 315, SWT 215 and with temperature handle SWA 25 also SWT 14, 18,
22, 28, 39, 50, 51 and 53.
-50°C to 280°C depending on probe.
Possible measuring modes: AP, AS and LOG.
CO2
Connect the Airtest to save and log carbon dioxide values.
Possible measuring modes: AP, AS and LOG.
Radio/BlueToothmodemforbalancingofventilation
SwemaTwin transfers measured values on the reference valve from one Swema 3000 to another
through radio/BlueTooth modem or 40 meter cable. The ow relation between them is displayed,
which makes adjustment according to the proportional method an easy task for just one person.

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The different modes used in Swema 3000
Choose mode by pressing the MENU1 and move the marker to ”Mode” with the UP/DOWN arrow
key. Press ENTER, SET or right ARROW and choose mode with the UP/DOWN arrows. Conrm
your choice with ENTER, EXIT or LEFT. Set the parameter for the current modes in the same way.
Press EXIT to start measuring.
APF (Average Point air Flow) Measured points are taken with ENTER Average, max, min and
measured points are showed on the display. The Swema 3000 calculates the air ow in l/s or m3/h.
Enter the diameter, height x width or area direct. If you choose to indicate the height and width or
diameter of the duct, the Swema 3000 calculates the effective area = the actual area times the
duct factor k2in accordance with the recommended measurement methods. The duct factor can
be turned off in MENU2. Use the APF mode for measuring the ow in ducts.
DPF (Differential Pressure air Flow). Available with a differntial pressure probe SWA 10 or SWA
07 or with inbuilt manometer on Swema 3000md. The ow in the measurement of pressure drop
across devices is directly obtained in l/s or m3/h.
Insert k- factor, and the Swema 3000 calculates the air ow according to the formula: q = k sqrt(∆P).
The specic k-factor is supplied by the manufacturer of (exhaust and supply) ventilation valves.
AF (Average air Flow) Only available with SwemaFlow 2000, 125 and 65. Average Flow is cal-
culated during selectable measuring time.
BP (Back pressure (air ow)) Only available with SwemaFlow 125. This mode is for measurement
over supply and exhaust valves to compensate the possible drop in air ow created by the ow
capture. BP mode calculates the real ow - the ow not infuenced by the ow capture.
AP (Average Point). By using the ENTER button the average is formed from measurements with
any probe (except SWA03). Average, max, min and number of measured points are shown.
AS (Auto Sampling). The Swema 3000 continuesly collects measured values at the interval set by
the Sampling Rate. Use AS mode for example if you want to measure average velocity, max, min,
and standard deviation at a point.
ASF (Auto Sampling air Flow). Used with SWA 31 to measure in l/s or m3/h through valves.
Sweep over openings in laminar ow hoods/cabinet and over rectangular exhaust and supply
ventilation grilles. Select and enter the height x width or area direct into the Swema 3000.
ASF does not calculte the are with a k2- reduction - ASF is not intended for measuring in ducts.
There we recommend to use APF instead.
CO (Comfort draught of air). Only available with the omni directional draught probe, SWA 03.
CO mode measures average velocity, temperature and standard deviation over a selectable period
of time. DR (Draught Rating) is presented in the automatic saved note. The DR indicates the per-
centage of people that would nd the draught unpleasant. The DR is based on experiments con-
ducted at the Technical University in Copenhagen, directed by Professor Fanger. DR is included
as a measure of undesirable air movements in the ISO 7730 standard adopted for indoor climates.
For a complete ISO7730 measurement use the SwemaMultipoint program.
LOG/LOGP Collects readings over a longer time period. Select interval and time constant for LOG.
LOGP is especially developed to be used with SWA 03 draught probe to present the draught rate
(ISO 7730) but can be used for other probes aswell. During a ”Measure Time” the instrument con-
tinuesly measures with the selected Time Constant. When the measure time has passed it stops
and starts again with a new ”Measure Time” at the choosen Protocol interval.

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Measures the actual values of the connected probe. Calcula-
tes avgerage and display Max and Min.
What different sensors measures in AP
Differencialpressuresensor:
Speed (m/s) & Differencial pressure (Pa). Speed measure-
ment requires that a PST is connected.
Hot wire anemometer:
Speed (m/s) & Temperature (°C)
Airowprobe:
Air ow (l/s or m3/h) & Temperature (°C)
Temperature sensor:
Temperature (°C)
Humidity sensor:
Relative humidity (%RF) & Temperature (°C)
For relative humidity sensor dew point is also calculated (°C)
and water contentl (g water / kg dry air) if measure value is
taken (ENTER).
Carbondioxide sensor:
Carbondioxide level (CO
2
)
Setting for measuring with AP
Timeconstant:
2s is recommended as standard. See Timeconstantand
Filter for more information.
Atmos. P:
The atmospheric pressure affects the result for following sen-
sors:
• Differencial pressure sensor (speed calculations)
• Hot wire anemometer (speed)
• Air ow probe (air ow)
Temperature:
This temperature only affects the differencial pressure sensor
(the speed calculation). For other sensors where temperature
is affecting the measurement results, is the sensor’s own tem-
perature sensor used.
8.1. AP (Average Point)
Possible with all probes except SWA 03.
Choose mode by pressing the MENU1-KEY
and move the marker to ”Mode” with the up/
down arrow key. Press ENTER or SET and
choose mode with the up/down arrow key.
Conrm your choice with ENTER or EXIT.
Set the parameters and press EXIT to start
measuring.
When measuring, collect values with the
enter button. When values are collected
the display will show average-, maximum-,
minimum-values and number of measure-
ments.

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Measuring with APF (Average Point air Flow)
Possible probes are: SWA 31, SWA 31E or SWA 07 or SWA 10 with pito static pipe or Swema 3000md.
Use the APF mode for measuring the ow in ducts.
Swema 3000 calculates the ow in l/s or m3/h by multiplying the
air velocity with the duct area.
OBS!AtdeliverySwema3000isinstalledwithK2-factors
ON.TheK2-factorreducesthechannelareaatmeasure-
mentinchannelswithAPF.
CalculationofFlow: Air ow = air velocity x k2 x area. At calcla-
tion of ow at measurement in channel, the ow should reduce
with a k2-factor according to the recomended measure methods.
(T09 & NBI-report) due to the air is still alongside the channel
walls. Set the k2-factor to On in Menu2 in Swema 3000 for an
automatic compensation. Set it OFF if you would like to have
some reduce of the channel.
For air velocity measurements connect a Pito static pipe with
differential pressure connections. Connect the middle Pito static
pipe to the plus on the meter and the side connection to the mi-
nus. Swema 3000 calculates the air velocity with the formula:
Velocity = sqrt (2 ∆P /ρ)
∆P= dynamic pressure =total pressure - static pressure (Pa)
ρ= density of air = 1,293 x (B x 273)/(1013 x (273 + t)) (kg/m3)
B = barometric pressure (calculated standard value 1013hPa)
t = Air temperature ºC (calculated standard value 20ºC)
Setting for measuring with APF:
Time Constant:
2s recommended as standard. See TimeconstantandFilter
for more information.
Diameter (Ø):
Set the diameter of the duct you want to measure. Move the
marker to ”Ø” with the up/down arrow key. Press ENTER or SET
and choose the diameter. Choose among standard diameters
with the up / down arrow key. To set the diameter to your choice
press EDIT and change with the arrow keys. Press EXIT or EN-
TER to conrm.
Height x Width (H x W):
Set the height and width of the duct you want to measure.
Move the marker to ”H x W” with the up/down arrow key. Press
ENTER or SET and choose height with the arrow keys. Press
ENTER or OK and set the width with the arrow keys.
Press ENTER or EXIT to conrm.
Choose mode by pressing the MENU1-
KEY and move the marker to ”Mode” with
the up/down arrow key. Press ENTER or
SET and choose mode with the up/down
arrow key. Conrm with EXIT or ENTER.
Set the parameters and press EXIT to
start measuring.
When measuring, collect values with the
ENTER button. When values are col-
lected the display will show average-,
maximum-, minimum-values and number
of measurements.

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Area:
To measure in a channel with free installed area move the
marker to Area and press ENTER. Desirable area can now
be installed with the unit m
2
. OBS! At measurement with free
installed area no K2 reduction occurs.
Unit:
Select which unit you would like to use Choose between l/s or
m3/h.
Atmosphere: The atmospheric pressure affects the measure-
ment result.
Temperature: This temperature affects the measurement
result at measurement with a differencial pressure sensor
and a PST. At measurement with a hot wire anemometer the
temperature is used as it has been calculated from the sensor
instead.
Measuring
When all parameters are installed, press EXIT to come back
to mode. Swema 3000 shows choosen Ø, HxW or Area on the
bottom of the display.
At calculation with pressure sensor (PST) pressure and ow
are shown.
At measurement with a hot wire anemometer, measured tem-
perature and ow are shown.
Collect measurement values with the ENTER-button. When
measurement values are collected Swema 3000 shows mean-
, max-, min-value and total measure points. When all measure
points are collected you can choose if you would like to save
or delete the measure.
When all measure values are collected
Swema 3000 shows mean-, max-, min-
value och total measure points. Choose if
you wold like to save or delete the mea-
sure.

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Tel: [phone] Fax: [phone] [email protected] www.swema.se 16
DPF is used to measure ows over diffusers and orice plates
with the decompression method. Then the diffuser’s K-factor
is being used and you put it in the Swema 3000 to give a ow
directly to the display. Swema 3000 calculates the ow accor-
ding to the formula:
q=k•√∆P
The K-factor has been gotten from the supplier of the diffuser.
Choose always a K-factor which is used to calculate l/s, later
you can choose to show m3/h instead. Here Swema 3000
calculates in m3/h itself.
OBS!IftheK-factorforthediffuserisbeingusedtocal-
culatem3/htheK-factorhastobedividedwith3.6before
itisinputedintheSwema3000.Ifnot,theflowvaluewill
show 3.6 times bigger.
Settings for measurement with DPF
Time Constant:
2s is recommended as standard. See Time Constant and
Filter for more information.
K-factor:
Set the K-factor you would like the Swema 3000 should cal-
culate with. Swema 3000 has a memory for 20 K-factors.
Choose which memory place (1-20) by using the UP/DOWN
arrows. Press SET to change the K-facor. Change with the
arrows.
Unit:
Choose which unit you would like to use. Choose between l/s
or m3/h.
Atmos. P: The atmospheric pressure affects the measure
result.
Temperatur: This temperature affects the measure result.
Measuring
When all parameters are installed press EXIT to come to
mode. Swema 3000 shows choosen K-factor, pressure and
ow. In mode you can choose between 20 different K-factors
that you have added in the memory with the help of the UP/
DOWN arrows.
To reset the pressure sensor manually press ZERO at mode.
For automatic reset see Menu2.
Collect measure values with ENTER. When these are collec-
ted, Swema 3000 will show mean-, max-, min-values and total
measure points. When all measure values are collected, you
can choose if you would like to save or delete the measure.
8.3. DPF (DifferentialPressureairFlow)-AirFlowwithK-factor
DPF is available with a differencial pressure sensor.
When measuring, collect values with the
enter button. When values are collected
the display will show average-, maximum-,
minimum-values and number of measure-
ments.
Choose mode by pressing the MENU1-KEY
and move the marker to ”Mode” with the
up/down arrow key. Press ENTER or SET
and choose mode with the up/down arrow
key. Conrm with EXIT or the ENTER. Set
the parameters and press EXIT to start
measuring.

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DPK is available with a differencial pressure sensor.
DPK is used to measure ows over diffusers and orice plates
with the decompression method. Then the diffusers K-factor
is being used and you put it in the Swema 3000 to give a ow
directly to the display. Swema 3000 calculates the ow accor-
ding to the formula:
k=q/√∆P
OBS!TheK-factorshownonthedisplayatDPKmeasure-
ment is always based on a reslut in l/s. If m3/h is installed
asanunitwillthek-factorbecalculatedonwhichinstal-
led glow equivalant in l/s.
SettingsformeasurementwithDPK
Time Constant:
2s is recommended as standard. See Time Constant and
Filter for more information.
Flow:
Set the ow you would like Swema 3000 should calculate a
k-factor for. Swema 3000 has a memory for 20 ow values.
Choose which memory place (1-20) you would like to choose
by using the UP/DOWN arrows. Press EDIT to change the
ows value. Change with the arrows.
Unit:
Choose which unit (l/s eller m3/h) as installed ow has. Even
though the ow is written in as m3/h will the k-factor be cal-
culated for the inscribed m3/h ow which is equivalent in l/s.
Atmos. P: The atmospheric pressure affects the measure
result.
Temperature: This temperature affects the measure result.
Measuring
When all parameters are installed press EXIT to come to
mode. Swema 3000 shows choosen K-factor, pressure and
ow. In mode you can choose between 20 different K-factors
that you have added in the memory with the help of the UP/
DOWN arrows.
To reset the pressure senor manually press ZERO at mode.
For automatic reset see Menu2.
8.4. DPK(DifferentialPressureK-faktor) -K-faktorwithAirow

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8.5 AF (AverageFlow)-Airowwithprobe
AF is available with air ow probes.
If you use a SwemaFlow 125, we rstly recommend to mea-
sure with the mode BP (Back Pressure) to compensate for the
pressure drop over the probe.
The mean ow is calculated under choosen time interval och
is shown on the display in l/s or m3/h. (time interval = Delay +
Measure Time).
Settings for measuring with AP
Start Delay:
Set the time of delay before measuring, 2 seconds are recom-
mended to stablilitize the ow before measuring.
Sampling Time:
Set the time you would like to averaging.
Flowfactor:
It is possible to multiply the ow with a ow factor. With ow
factor = 1.00 will not the ow change. Warning: The Calibra-
tion is only valid at Flow Factor = 1.
Another ow factor is being used to compensate for e.g. lea-
kage.
Unit:
Choose which unit you would like to use. Choose l/s or m3/h.
Atmos. P: The atmospheric pressure affects the measure
result.
Temperature: This temperature does not affect the measure
result due to the temperature is measured form the sensor
instead.
Measuring
When all parameters are installed press EXIT to come to
mode.
Collect measure values with ENTER or the button on Swema-
Flow 125/2000. When the measure values are collected does
Swema 3000 show mean-, max-, min-value and standard
deviation. When all measure values are collected, you can
choose if you would like to save or delete the measure.
To delete, press CLEAR. To save, press SAVE or hold the but-
ton on the SwemaFlow 125/2000.
When measuring, Start the measuring with
the enter button. Then you can choose if
you want to clear or save your measure-
ment.
Choose mode by pressing the MENU1-KEY
and move the marker to ”Mode” with the up/
down arrow key. Press ENTER or SET and
choose mode with the up/down arrow key.
Conrm with EXIT or the ENTER.
Set the parameters and press EXIT to start
measuring.

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Tel: [phone] Fax: [phone] [email protected] www.swema.se 19
BP is available with SwemaFlow 125 or 125D.
At some air ow measurements with probes (primarly with the
low pressure drops) is it necessary to correct the measure
values for the restrictor of the diffuser that the probe creates.
SwemaFlow 125/D can do this correction for you. By mea-
suring 2 times with and without throttle ring, Swema 3000
calculates the ow witout restricor i.e. the ow from the diffu-
ser without probe. In the same way as in the mode AF, is the
mode BP used averaging under a choosen time period.
Settings for measuring with BP
Start Delay:
Set the time of delay before measuring, 2 seconds are recom-
mended to stabilitize the ow before measuring.
Sampling Time: Set the time you would like to averaging.
Unit: Choose which unit you would like to use. Choose bet-
ween l/s or m3/h.
FlowFactor:
It is possible to multiply the ow with a ow factor. With Flow
Factor = 1.00 will not the ow change. Warning: The Calibra-
tion is only valid at Flow Factor = 1.
Another ow factor is being used to compensate for e.g. lea-
kage.
Unit: Choose which unit you would like to use. Choose l/s or
m3/h.
Atmos. P: The atmospheric pressure affects the measure
result.
Temperature: This temperature does not affect the measure
result due to the temperature is measured form the sensor
instead.
8.6 BP (BackPressure)-Airowwithcompensatedprobe
Measuring
The display shows PO 1. Place the throttle ring on the mea-
sure unit and set the probe over the diffuser. Press ENTER to
start averaging nr. 1.
When ”Point 1” is measured a beep sounds and the display
shows PO 2. In a minute you have to measure ”Point 2” wit-
hout the throttle ring, otherwise the instrument returns to ”Point
1”. Remove the throttle ring and place the probe over the dif-
fuser again. Press ENTER to start averaging nr. 2.
It will be successful without the throttle ring and take the se-
cond measure with throttle ring.
The display shows the actual value ”True” as well as measure
1 & 2.
If the measure value blinks it is to big difference between point
1 and 2 and the result is not trustworthy.
Choose mode by pressing the MENU1-KEY
and move the marker to ”Mode” with the
up/down arrow key. Press ENTER or SET
and choose mode with the up/down arrow
key. Conrm with EXIT or the ENTER..
Set the parameters and press Exit to start
measuring.
The display will show PO 1.Start with the
throttle ring on and press Enter to collect
the rst value,
When ready with the rst value the display
will show PO 2.
Remove the throttle ring and collect the
second value by pressing Enter. The but-
ton on SwemaFlow 125 can also be used
as a Enter-button. A long press will save a
measurement.

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After PO 2 is measured will Swema 3000 calculate the actual
value. On the display it says True, Max and Min. Max without
throttle ring and Min is with throttle ring and True is the actual
value..
Choose if you would like to save your measurement. To delete,
press CLEAR. To save, press SAVE or hold the button on the
SwemaFlow 125 / 2000.
Placementofthrottlering
At measurement with a throttle ring should this always be
placed after the measure wires with respect on the air ow,
i.e. the air should rstly hit the wires, subsequently the throttle
ring.
After PO 2 is measured the display will
calculate the true value and show it on the
display. The display will also show point 1
& 2. Max is without the ring and Min is with
the ring. Then you can choose if you want
to clear or save your measurement.