Swema 3000 User manual
Swema AB Pepparvägen 27 SE-123 56 FARSTA
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Manual for Swema 3000
Version 1151 5.21
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Contents
Connectors and Buttons 3
How to put on/off holders for the probes 4
Starting 5
PC programs 6
The different probes for Swema 3000 7
The different modes used in Swema 3000 9
Measuring with APF (Average Point air Flow) 10
Recomended measuring points for circular and rectangular ducts 11
Measuring with DPF (Differential Pressure air Flow) 13
Measuring with AF (Average Flow) 15
Measuring with BP (Back Pressure) 16
Measuring with AP (Average Point) 18
Measuring with AS (Auto Sampling) 19
Measuring with ASF (Auto Sampling Flow) 20
Measuring with CO (Comfort) 22
Measuring with LOG (Logging) 23
Measuring with LOGP (Logging Protocols) 24
Note Book, Log Book and File 25
Leakage tester for Building 26
Leakage tester for Duct 29
Control unit for leakage tester 31
Measuring with SwemaTwin - Balancing of ventilation 32
Menu 1 34
Menu 2 35
Menu 3 36
SwemaTerminal 2 37
Time constant 38
Displayed values and saving measurment 38
Technical Data 39
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Connectors and Buttons
Display
Menu-keys
Arrow Keys
Enter Key
Display light
On / Off
SWA 31
Probe connector
RS232/SwemaTwin connector
USB connector
Battery hatch 2 x AA Batteries
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How to put on/off holders for the probes
Start with removing the rubber strip by gripping it with your ngers. Pull it up about 1 cm to the
opening and pull it out.
Remove the rubber strip by just pull it out. When you have removed the strip put in the appropriate
holders and slide them to the wanted positions.
Now you can attach the probe. (Picture shows SWA 10 with holder)
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Starting
The Swema 3000 is a multi-purpose instrument for measuring
air velocities, air ows, relative humidity, temperatures and
differential pressure. Swema3000, 3000d, 3000md: d means
density compensated with inbuilt barometer and thermocouple
type K connector. m means inbuilt manometer.
Swema 3000 has individually calibrated, replaceable probes.
As soon as you turn on the instrument with a probe connected,
measurement values are displayed. It’s important to turn off
Swema 3000 before you connect or disconnect a probe. For Swema 3000md toggle
between the inbuilt manometer and external probe by using the EXT / INT button.
In addition Swema 3000 will calculate and help you work correctly when using any of the modes
included in the Swema 3000. By pressing Enter the measurement mode will start.
When Swema 3000 is turned on some information about the instrument is displayed under a
couple of seconds. Information showed is what model of Swema 3000 it’s, wich software version it
has and the battery power (under 2.0V the instrument will turn off). If you have a probe connected
you will also see what kind of probe it’s, next calibration date and serial number of the probe (next
calibration date and seriel number is not showed for relative humidity probes). If you would like to
see this information for more than a couple of seconds hold down the ON/OFF button during turn
on, the information is showed until you release the button.
There are some general modes to use with any probe: AP (not SWA03), AS, LOG and LOGP.
We suggest to start to learn the AP and LOG modes.
For ventilation measurements there are some special modes: APF, DPF, AF, BP, ASF and CO.
Start by using APF(SWA31/07/10), DPF (SWA10/07) and BP, AF (SwemaFlow 125/2000/65)
Swema 3000 can store measurement results in the memory. Measurement notes and logs can easily
be transfered to a PC using the program SwemaTerminal.
If you have replaced a probe or connected it for the rst time, the instrument always selects the
mode which is standard for the connected probe. In addition, the Swema 3000 reads in the cali-
bration and only makes available the modes which are relevant to that particular type of probe. If
you switch off the instrument and turn it on again, you will return to the mode you were using. It
also remembers what time constant and number of decimal used. Swema 3000 remembers infor-
mation for the two last probe used plus the inbuilt manometer of Swema 3000md.
At delivery the instrument is set to use k2-factors that is reducing the duct surface when
calculating ow in APF-mode.
Menu-keys (Page 3)
The lowest part of the display is divided into 3 squares and directly under these squares there are
3 Menu-keys. The buttons functions varies wich is described in the 3 squares abowe.
Change settings and move around in the Menu
Use the UP/DOWN-arrow key to move between the different lines in the Menu. If you want to
change something press ENTER, RIGHT-arrow key or SET (Menu-key to the right). Use UP/
DOWN-arrows to choose between the different options you have. If you want to go back to default
settings press DEF (Menu-key in the middle) when it’s showed. When you are nnished with your
changes press ENTER, LEFT-arrow key or EXIT (Menu-key to the left). To go back to measuring
mode press EXIT.
Connectors on Swema 3000, 3000d and md.
3000md also has TC connector.
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PC programs
A program, SwemaTerminal 2, for tranfering data via
USB is included on the CD with this manual. SwemaTer-
minal 2 can also be downloaded on www.swema.com.
SwemaTerminal 2 is used for updating the Swema 3000
(instructions on www.swema.com).
230V adapter, connects to USB.port. (Part.no. 764.610).
RS232-cable for Com-port. (Part.no. 759.030)
The PC-program SwemaMultipoint (Part.no. 763.710)
The Swema Multipoint can be used to log data of the
two variables showed on the LCD of the Swema 3000.
Swema MultiPoint can monitor and log up to 8 Swema
3000 and present it in a live graph.
Swema Multipoint can also be used to create the PPD,
PMV and Draught index according to ISO 7730.
For ISO 7730, two Swema 3000, one SWA 03, one
black globe thermometer and one HygroClip2-S are
needed.
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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.
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
inuenced 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 inuencing 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
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 fulls 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-KEY and move the marker to ”Mode” with the UP/DOWN
arrow key. Press ENTER, SET or right ARROW KEY and choose mode with the UP/DOWN arrow
keys. Conrm your choice with ENTER, EXIT or LEFT arrow key. Set the parameter for the cur-
rent 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 specic 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 calcu-
lated 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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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.
Reduction of Flow When selecting a circular or rectangular
duct it is recommended to reduce the ow by a k2-factor.
(According to ”Methods for measuring air ow in ventilation sys-
tems”) The air velocity is reduced close to the walls of the duct
because of friction. Set the k2-factor to ON in the Settings for
automatic compensation. Air Flow=Velocity x k2 x area. To use a
non reduced area set the k2to OFF, see settings.
When a differential pressure probe is connected the 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)
(With Swema 3000d or md with Thermocople, the measured B
and t are used in the formula.)
Connect the air velocity probe or pressure probe with pito static
pipe and press ON. Swema 3000 is in measuring mode.
Press the MENU1-KEY and move the marker to ”Mode” and
change to APF.
Set the PARAMETERS for measuring mode APF:
Time Constant, update of the displayed value (for more infor-
mation see Time Constant under Technical Data).
Øset 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 conrm.
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 conrm.
Area set the area of the duct. (k2reduction will not be made)
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. Conrm 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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Recomended measuring points for circular and rectangular ducts
From ”Methods for measuring air ow in ventilation systems”, by the Nordic Ventilation Group and the Building Re-
search Council, 1998, ISBN 91-540-5827-9. For D≤400, k2values are from NBI report Nordtest-proj. No. 1463-99.
Circular cross-section: *) D≤ 160 mm → k2= 0,92 (SWA 31), 0,89 (Pito Static Pipe)
160 < D ≤ 400 mm → k2= 0,96 (SWA31), 0,95 (Pito Static Pipe)
400 < D ≤ 1250 mm → k_= 0,98
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Unit choose the unit you want to measure with l/s, m3/h
or CFM.
Atmospheric pressure see Menu1
Temperature see Menu1
See Note Book, Log Book and File
Auto zero (
For differentail pressure)
See Menu2, The different probes for Swema 3000.
To manaully zeroing the pressure sensor - press the Zero button.
When all parameters are set press the EXIT-button to get back
to measuring position. Swema 3000 will show selected Ø,
Height x Width or Area.
Collect values with the ENTER-button. When values are col-
lected the display will show average-, maximum-, minimum-
values and number of measurements. When all values are
collected you can choose if you want to clear or save your
measurement.
To clear press the CLEAR-button and to save press the SAVE-
button. If you press the SAVE-button the instrument saves
your measurement at the rst free memory place in the note
book memory. The instrument also give a short signal and dis-
plays the memory place for a few seconds. See Note Book.
Please Note! If Swema 3000 with an inbuilt barometer and
thermoelement is used. The displayed Avg, Max and Min va-
lues are then calculated by the barometric pressure and tem-
perature value at the different measuring points. When saving
the measurment a mean value of the barometric pressure and
temperature will be saved . The mean values will then be used
to calculate the saved values in the Note book.
When measuring in a duct it is necessary to do this where the duct is straight. According to
”Methods for measuring air ow in ventilation systems” the straight length before and after the
measurement position must at least be:
Round ducts Rectangular ducts
Before measuring position a ≥5 x D a ≥6 x Dh
After measuring position a ≥2 x D a ≥2 x Dh
Dh=Hydraulic diameter (Diameter or corner to corner for rectangular ducts)
When all values are collected you can
choose if you want to clear or save your
measurement.
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The ow in the measurement of pressure drop across valves
is directly obtained in l/s or m3/h.
q = k sqrt (∆P)
The k-factor is supplied by the manufacturor of the valve.
It should be dened so that result comes out in liter/s.
If you would like the result in m3/h then still use the k-factor
that is valid for liter/s calculation and the Swema 3000 will
calculate to m3/h.
Set the PARAMETERS for measuring mode DPF:
Time Constant, update of the displayed value (for more infor-
mation see Time Constant under Technical Data).
K-factor In Swema 3000 you have a memory for 20 K-fac-
tors. It is useful when there are different k-factors for different
positions of the valve. Move the marker to ”K-factor” with the
UP/DOWN arrow key. Press ENTER or SET and choose with
the UP/DOWN arrow keys which K-factor memory place (1-
20) you want to set. Press EDIT and edit your K-factor with
the arrow keys. Conrm your choice by pressing ENTER or
EXIT two times.
Unit choose the unit you want to measure with l/s, m3/h or
CFM.
Atmospheric pressure see Menu1
Temperature see Menu1
Auto zero See Menu2, The different probes for Swema 3000.
To manaully zeroing the pressure sensor - press the Zero button.
See Note Book, Log Book and File
When all parameters are set press the EXIT-button to get
back to measuring position. Swema 3000 will show selected
K-factor the pressure and the air ow. You can change bet-
ween the stored k-factors by pressing UP/DOWN ARROW-
buttons. Collect values with the ENTER-button. When values
are collected the display will show average-, maximum-, mini-
mum-values and number of measurements. When all values
are collected you can choose if you want to clear or save your
measurement (you can change to another k-factor until values
are cleared or saved) .
Measuring with DPF (Differential Pressure air Flow)
Possible probes with DPF are: SWA 07 or SWA 10 and Swema 3000md.
See Differential pressure in the section The different probes for Swema 3000.
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. Conrm with EXIT or the ENTER. Set
the parameters and press EXIT to start
measuring.
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To clear press the CLEAR-button and to save press the SAVE-
button. If you press the SAVE-button the instrument saves
your measurement at the rst free memory place in the note
book memory. The instrument also give a short signal and
displays the memory place for a few seconds.
Please Note! If Swema 3000 with an inbuilt barometer and
thermoelement is used. The displayed Avg, Max and Min va-
lues are then calculated by the barometric pressure and tem-
perature value at the different measuring points. When saving
the measurment a mean value of the barometric pressure and
temperature will be saved . The mean values will then be used
to calculate the saved values in the Note book.
Use the k-factor to calculate the air ow. Certain suppliers calculate the correction factor using the formula:
q = sqrt (Ik ∆P)
In such case you must enter: k = sqrt Ikin Swema 3000.
If the supplier has not specied a k-factor, You calculate it easily if you have a pressure-drop dia-
gram. Proceed as follows: q = k sqrt ∆P → k = q / sqrt ∆P.
Now go into the diagram for example:
∆P = 100 Pa → sqrt ∆P = sqrt 100 = 10
for Ø 100: 100Pa correspond to 50 l/s
Use the calculation for k: k= 50/10 → 5,0
So the k factor in this case was 5,0. Set this in Swema
3000 to obtain the flow in l/s, m3/h or CFM.
If the diagram does not extend to 100 Pa, select for
example 25 Pa
(sqrt 25 = 5)
When all values are collected you can
choose if you want to clear or save your
measurement.
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Measuring with AF (Average Flow)
Possible for ow captures: SwemaFlow 65, SwemaFlow 125 or SwemaFlow 2000.
If you have the SwemaFlow 125 Swema recomends BP mode.
Average Flow is calculated during selectable measuring time
and presented on the display (time constant + selected mea-
suring time). Connect the ow capture hood and press ON.
After a few seconds Swema 3000 is in measuring position.
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 for measuring mode AF:
Start delay is the waiting time before measuring, to stabilising
the ow in the ow capture.
Sampling Time Make an average value during this time.
Flow Factor It is possible to multiply the ow with a ow fac-
tor. Flow factor=1.00 will not alter the ow. Warning: Changing
to anything else will alter the reading from calibrated value.
This can be used to compensate for example for leakage.
Unit choose the unit you want to measure with l/s, m3/h or
CFM.
Atmospheric pressure see Menu1
Temperature see Menu1
See Note Book, Log Book and File
When all parameters are set, press EXIT to start measuring.
Start measuring with the ENTER-button (or button on Swema-
Flow 125/2000). Swema 3000 will collect values and calculate
the minimum, maximum and average air ow and standard
deviation during the selected Sampling Time. When all values
are collected you can choose if you want to clear or save your
measurement. To clear press the CLEAR-button and to save
press the SAVE-button. If you press the SAVE-button (or long
press onn button on SwemaFlow 125/2000) the instrument
saves your measurement at the rst free memory place in the
Note Book memory.
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.
Conrm with EXIT or the ENTER.
Set the parameters and press EXIT to start
measuring.
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When measuring with any Flow capture the ow may be in-
uenced by the ow capture itself. The ow may be throttled.
This can be corrected by using the Back Pressure mode. By
measuring two times with SwemaFlow 125, with and without
an extra throttle ring. Swema 3000 calculates the ow that
reects the true ow, with no capture interference. In the same
way as AF mode the BP mode makes an average measure-
ment over time.
Connect the SwemaFlow 125 and press ON. After a few se-
conds Swema 3000 is in measuring position.
Set the PARAMETERS for measuring mode BP:
Start delay is the waiting time before measuring, to stabilising
the ow in the ow capture.
Sampling Time Make an average value during this time.
Unit choose the unit you want to measure with l/s, m3/h or
CFM.
Atmospheric pressure see Menu1
Temperature see Menu1
See Note Book, Log Book and File
When all parameters are set press the EXIT-button to get
back to measuring mode.
When measuring with the throttle ring, the ring shall always be
placed after the hot wires in the sense of ow direction.
The display will show PO 1. Place the throttle ring on the
measuring unit and place the capture over the valve and press
enter.
When ”Point 1” is measured you hear a beep and the display
shows PO 2 . Within one minute you must measure ”Point 2”
without the throttle ring otherwise the instruments returns to
”Point 1”. Remove the throttle ring and place the capture over
the valve once more and press enter. It is also possible to take
the rst measure without the throttle ring and the second with
the throttle ring.
Measuring with BP (Back Pressure)
Possible probe with BP is: SwemaFlow 125
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. Conrm 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 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.
The display will now show the true value and measuring point
1 & 2. If the measured value are ashing there is to big diffe-
rence between point 1 & 2 and the result is not reliable.
You can now choose if you want to clear or save your measu-
rement.
To clear press the CLEAR-button and to save press the SAVE-
button. If you press the SAVE-button the instrument save your
measurement at the rst free memory place in the note book
memory. The instrument also give a short signal and display
the memory place for a few seconds.
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Measures the actual values of the connected probe. Calcula-
tes avgerage and display Max and Min.
Set the PARAMETERS for measuring mode AP:
Time constant, update of the displayed value (for more infor-
mation see Time Constant under Technical Data).
Unit Only for SwemaFlow: Choose the unit you want to mea-
sure with l/s, m3/h or CFM. See settings for more information.
Atmospheric pressure see Menu1
Temperature see Menu1
See Note Book, Log Book and File
When all parameters are set press the EXIT-button to get back
to measuring mode.
Collect values with the ENTER-button. When values are col-
lected the display will show average-, maximum-, minimum-
values and number of measurements. For Relative humidity
probes Swema 3000 displays the dew point and mixing ratio
(g water / kg dry air)
When all values are collected you can choose if you want to
clear or save your measurement.
To clear press the CLEAR-button and to save press the SAVE-
button. If you press the SAVE-button the instrument save your
measurement at the rst free memory place in the note book
memory. The instrument also gives a short signal and displays
the memory place for a few seconds.
Measuring with 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.
Conrm 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.
Swema AB Pepparvägen 27 SE-123 56 FARSTA
19
AS continuesly sample values direct after each other. AS does
not save all values. Instead it calculates the average, max,
min and standard deviation of the sampled values.
Connect any probe and press ON. After a few seconds
Swema 3000 is in measuring mode.
Set the PARAMETERS for measuring mode AS:
Sampling Rate is the time Swema 3000 uses to sample
measured values, make an avarage and display the value.
Swema 3000 uses a oating mean value, i.e. for example if a
”Sampling rate” of 30s is used, Swema 3000 sample a value
2 times/second during 30 seconds (60 values) and shows an
avarage value of them. After 30 seconds the rst value will be
replaced by a new and a new avarage will be calculated and
shown on the display etc. Swema 3000 always collect a va-
lue 2 times/second with a ”Sample rate” of 0,5s or higher. If a
lower sample rate than 0.5s is used Swema 3000 will sample
and display the value at the same rate the chosen ”Sample
rate”.
Unit Only for SwemaFlow: Choose the unit you want to mea-
sure with l/s, m3/h or CFM. .
Atmospheric pressure see Menu1
Temperature see Menu1
See Note Book, Log Book and File
When all parameters are set press the EXIT-button to get
back to measuring mode.
Start and stop measuring with the ENTER-button. Swema
3000 will collect values and calculate the average. It will also
calculate standard deviation, number of measuring points and
maximum and minimum.
When using a differential pressure AS will calculate the air
velocity, assuming a pito static pipe is connected to the diffe-
rential pressure probe. When all values are collected you can
choose if you want to clear or save your measurements.
To clear press the CLEAR-button and to save press the SAVE-
button. If you press the SAVE-button the instrument saves the
measurements at the rst free memory place in the note book
memory. The instrument also gives a short signal and displays
the memory place for a few seconds.
Measuring with AS (Auto Sampling)
Possible with all probes
Start and stop the sampling by pressing
Enter. When the sampling are done you
can choose if you want to clear or save
your measurement.
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. Conrm your choice with ENTER or
EXIT. Set the parameters and press Exit to
start measuring.
Swema AB Pepparvägen 27 SE-123 56 FARSTA
20
Same as AS, but the Swema 3000 calculates the ow in l/s or
m3/h. In ASF mode the area is not reduced by a k2-factor.
Use ASF mode for example to measure the ow and air ve-
locity in fume hoods and over grilles. ASF is not intended for
measuring in ducts and diameters and duct coefcient are
therefore omitted.
Connect the air velocity probe and press ON. After a few se-
conds Swema 3000 is in measuring mode.
Set the PARAMETERS for measuring mode ASF:
Sampling Rate is the time Swema 3000 uses to sample
measured values, make an avarage and display the value.
Swema 3000 uses a oating mean value, i.e. for example if a
”Sampling rate” of 30s is used, Swema 3000 sample a value
2 times/second during 30 seconds (60 values) and shows an
avarage value of them. After 30 seconds the rst value will be
replaced by a new and a new avarage will be calculated and
shown on the display etc. Swema 3000 always collect a va-
lue 2 times/second with a ”Sample rate” of 0,5s or higher. If a
lower sample rate than 0.5s is used Swema 3000 will sample
and display the value at the same rate the chosen ”Sample
rate”.
H x W set the height and width of the duct you want to mea-
sure.
Area set the area of the duct.
Unit choose the unit you want to measure with l/s or m3/h.
Atmospheric pressure see Menu1
Temperature see Menu1
See Note Book, Log Book and File
Measuring with ASF (Auto Sampling Flow)
Possible probes with ASF are: SWA 31 or SWA 31E.
Start and stop the auto sampling ow by
pressing Enter.
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. Conrm your choice with ENTER or
EXIT. Set the parameters and press Exit to
start measuring.
Other manuals for 3000
1
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