Instructions for Use SS 20.260
Page 17
9 Technical data
Measuring parameters
Standard velocity w
N
of air, based on standard conditions 20 °C
and 1013.25 hPa
Medium temperature T
M
Medium to be measured
Air or nitrogen, other gases on request
Measuring range w
N
0 ... 2.5 / 10 / 20 / 40 / 50 m/s
Lower detection limit w
N
0.2 m/s
Measuring accuracy w
N
- Standard
- Precision
*
±(5 % of measured value + [0.4 % of final value; min. 0.02 m/s])
±(3 % of measured value + [0.4 % of final value; min. 0.02 m/s])
Reproducibility w
N
±1,5 % of measured value
Response time (t
90
) w
N
3s (jump from 5 to 0 m/s)
Temperature gradient w
N
< 8 K/min (@ 5 m/s)
Measuring range T
M
-20 ... +120 °C
Measuring accuracy T
M
(w
N
≥ 2 m/s)
±1 K (0 ... 40 °C)
±2 K (remaining measuring range)
Operating temperature
- Medium
- Electronics
-20 ... +120 °C
0 ... +70 °C
Humidity range
0 ... 95 % rel. humidity (RH), non-condensing
Operating pressure
atmospheric (700 ... 1300 mbar)
Operating voltage U
B
24 V
DC
± 10 % (reverse voltage protected)
Mounting tolerance
±3° (relative to flow direction)
Current consumption
< 60 mA
Analog outputs
- Type voltage (U)
- Typ current (I)
- Load capacity
1 or 2 (short-circuit protected)
0 ... 10 V
(R
L
≥ 10 k
)
4 ... 20 mA
**
(R
L
≤ 300
)
C
L
≤ 10 nF
Electrical connection
Cable fixed on housing, 4-pin, length 2 m, pigtail
***
Line length
≤ 15 m (U) / 100 m (I)
Protection class
III (PELV)
****
according EN 50178)
Type of protection
IP 65
Mounting
Thread M18 x 1 at sensor enclosure, accessories (option)
Installation length
50 / 100/ 200 / 350 / 500 mm
Weight
200 g max.
Table 8
*
Under alignment conditions and with regard to the reproducibility of the reference
**
Error messaging: 2 mA; exceeding measuring range: up to 22 mA
***
With cable end sleeves
****
According EN 50178