AirDistSys 5000
7 – Operator’s Manual
max analog output resistance:
100 Ohm
power supply:
3.3…9 VDC
power consumption:
typ.60mA, peak. 110mA, economy mode 6mA
1)
The error of directional sensitivity occurs when the direction of air flow is other than during the calibration of the
probe. When measuring low velocity characteristic for indoor environment, this error is negligible (see the above graph).
For velocity above 2 m/s, this error can be up to 2.5% and it should be taken into account when measuring. At such
velocity the flow direction may be easily determined. In order to minimize this error, place the probe (transducer) in the
same position as at the time calibration procedure. The probes position in calibration procedure are the following:
- for probe integrated with transducer casing - flow directed on the front wall (logo) of the transducer casing,
- for probe with cable – flow directed on the sign (dot) on the handle of the probe.
2)
The upper frequency is defined as the highest frequency of speed fluctuation up to which the instrument measures the
standard deviation of the fluctuations not more than 10% different than the true standard deviation (see EN 13182
Ventilation in buildings – Instrumentation requirements for air velocity measurements in ventilated spaces, 2002,
European Committee for Standardization, Brussels).
B
B
.
.
S
S
e
e
n
n
s
s
o
o
D
D
A
A
C
C
o
o
n
n
c
c
o
o
n
n
v
v
e
e
r
r
t
t
e
e
r
r
SensoDACon converter series 5400 allows to
change a digital signal from Sensoanemo transducer
(socket RJ45) on the analog signal of temperature and
velocity (output terminal block). There are offered the
following type:
-
SensoDACon 5420 with voltage output 0-2V
-
SensoDACon 5450 with voltage output 0-5V
-
SensoDACon 54C0 with current output 0-20mA
Each of above types can be made from one of the
following speed ranges: 0-1 m/s, 0-5 m/s or 0-10 m/s.
Both outputs (one for speed air and one for temperature)
are linearized, this means that the temperature and speed
are a linear function of the voltage or current output (see
table below).
Type
Range
Output
Speed
Temperature
SensoDACon
5420
0-1m/s
0-5m/s
0-2V
V[m/s]=0.5U
v
[V]
V[m/s]=2.5U
v
[V]
t[
O
C]=25U
t
[V]
SensoDACon
5450
0-1m/s
0-5m/s
0-5V
V[m/s]=0.2U
v
[V]
V[m/s]=U
v
[V]
t[
O
C]=10U
t
[V]
SensoDACon
54C0
0-1m/s
0-5m/s
0-20mA
V[m/s]=0.05I
v
[mA]
V[m/s]=0.25I
v
[mA]
t[
O
C]=2.5I
t
[mA]
Remark:
First connect the converter to SensoAnemo transducer and next turn on the power to the terminal block.
After turning on the power converter establishes communication with anemo transducer and initializes a
read-mode instantaneous values.
