Swema SwemaAir 5 User manual

SwemaAir 5
Operating instructions
vers 1.13 CW20220404
SWEMA AB
Pepparv. 27
SE-123 56 FARSTA
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Web page: www.swema.com
WARNING! Before start measuring please read chapter 6, “Set-
tings”. At delivery, k2-factor and automatic density compensa-
tion for atmospheric pressure and temperature is set to ON.
Contents:
1. Introduction......................... 1
2. Technical data....................... 2
3. Start of instrument............... 2
4. Unit..................................... 3
5. Mode................................... 5
6. Settings (Set)....................... 7
7. Notebook.............................. 8

1.
Function keys
ON / OFF
Display light
USB connector
Batteries
Right Key
Enter
Left Key Average
Up Key Max
Down Key down
1. Introduction
SwemaAir 5 is a hot wire anemometer for measuring temperature, air
velocity and air ow. Temperature is measured in °C or °F, air veloc-
ity in m/s or fpm and air ow in l/s, m3/h or CFM. SwemaAir 5 has a
built in barometer that with the measurement of temperature makes
it possible to compensate for correct air density. Air ow is measured
by enter the are into the instrument directly, as diameter or as height
x width. SwemaMan 5 can calculate minimum, maximum and average
value. Saved measurements are easily transferred to a PC.
SwemaAir 5 has display light, USB connection and are delivered with
two easily replaceable AA batteries.

2. Technical data
2.
3. Start of instrument
When starting the instrument (ON/OFF-button), the display shows the
battery voltage, rmware version and calibration date. The instrument
enters measuring mode after a couple of seconds. SwemaAir 5 will start
in the same measuring mode it was set to before turned off.
Display light: The display light can be turned On and Off by pressing
the ON/OFF-button (when the instrument is turned on).
Turn Off: To turn off the instrument, press and hold down the ON/
OFF-button for about 2 seconds until the text ”OFF” is shown on the
display.
Measurement range
Air velocity: 0,1...12 m/s, 19...2350 fpm
12...30 m/s, 2350...5900 fpm (extra calibration)
Temperature: -20...80 °C, -4...176 °F
Barometer: 600...1200 hPa
Measurement uncertainty at 23 °C
±3% min ±0.04 m/s, min ±8 fpm
Temperature: ±0,3°C, ±0,5°F
Measurement uncertainty at 10...30 °C
±5%, min ±0,05 m/s, min 10 fpm
Barometer: ±3,5 hPa, ±0,1 inHg
Measurement uncertainty at -20...80 °C
Temperature: ±1,0°C, ±1,8°F
(Uncertainty according to GUM (JCGM 100:2008) using a coverage factor of 2, which for
a normal distribution corresponds to a probability of 95%. It is important to correct the
measurement values with the corrections stated in the calibration certicate to obtain the
above uncertainties.
Non condensing, non moist air, <80%RH, non aggressive gases.)
General
Resolution: 0,01m/s, 0,1°C, 1hPa
Calculated
units: l/s, m3/h, cfm
Operating
conditions: Non condensing, non moist air, <80 %RH, non aggressive gases.
Battery: 2 1.5V IEC LR6 AA batteries, standard or rechargeable
Display light
Output: USB to PC, output of online measurement or stored data.
Selectable time constant (0,5, 2, 10 s)
Size: 180x82x36 mm, 195x93x36 mm including probe
Probe size: Ø 8...10 mm probe: 66cm including 1...2 meter Spiral cable.
(Part.No. 768482 66cm probe with 4 m straight cable)
On demand 66 cm probe + 50 cm probe elongation including
1,5...2,5 m spiral cable
Weight: 500g
IP rating: IP50 (protects against dust)

Air velocity measurement
3.
Measurement
When in measuring mode, press Enter to store
a value in the volatile memory. The number of
measuring points stored in the volatile mem-
ory is shown on the display directly under the
measured values, ”2P” (see picture to the right)
means the two measuring points have been
saved. When Enter is pressed an average of
the measuring points is shown for a short while
before the measured values are shown in real
time again.
Average, Max & Min
To check the average, max or min value of the stored measurement
points press Left Key (Average), Up Key (Max) or Down Key (Min),
as long as the button is held down the corresponding value will be
shown on the display.
Save a measurement
After a measuring point has been stored it’s possible to save the
measurement in SwemaAir 5’s Notebook by pressing Save. The dis-
play will show which note number the measurement is saved as (i.e.
n3 = note 3). To erase the measurement from the volatile memory
press Clear.
4. Unit
Press Unit to alternate between the different units.
SwemaAir 5 can display the following units:
SI units: US Units:
m/s & °C fpm & °F
l/s & °C cfm & °F
m
3
/h & °C cfm & °F
hPa & °C inHg & °F
Air Velocity (m/s & Pa)
Press UNIT until SwemaAir 5 shows the units
m/s and °C. The measurements with average,
max and min can be saved.

Air ow meaurements in l/s and m
3
/h with set diameters.
4.
Real = Real density (measured barometric
pressure and temperature)
Std = Standard density (1013 hPa & 20°C)
*= Barometric pressure set manually
See chapter 6, “Settings” for more information on how to change be-
tween Real, Std and *.
Air Flow (l/s, m
3
/h or cfm)
SwemaAir 5 can measure air ow via three different methods. Swe-
maAir 5 measures air ow in:
• Circular ducts with a given diameter
• Rectangular ducts with a given Height x Width
• Ducts with a given transversal area
To measure air velocity, press Unit and air ow measurement in l/s
will be displayed, press Unit once more for air ow in m
3
/h.
The air ow unit displayed
is the last unit SwemaAir 5
was set to. See chapter ”5.
Mode” for more information
on the different air flow
measurements and how to
change settings.
Barometric pressure & Temperature (hPa & °C)
Press Unit until hPa & °C is displayed. The baro-
metric pressure and temperature shown on the
display will be the values SwemaAir 5 uses to
compensate for the density of air (air density
compensation is used on air velocity and air ow
measurements).
When SwemaAir 5 is switched ON, it shows the
measured barometric pressure and Temperature
as standard.
When measurements are performed using air
density compensation, the text “Real” is dis-
played in the top left corner of the display, oth-
erwise the text ”Std” or ”*” is displayed.