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.