Gebrauchsanweisung / Instructions for Use - SCHMIDT
®
Flow Sensor SS 20.225
22
9 Technical data
Parameter
Measuring parameter
Standard velocity w
N
of air, based on standard conditions of
20 °C and 1013.25 hPa
Temperature of medium T
M
Medium to be measured
Air or nitrogen
Measuring range w
N
0
… 1 / 2.5 / 10 / 20 m/s
Lower detection limit w
N
0.06 m/s
Measuring accuracy
16
w
N
- Standard
- Precision
±(5 % of meas. value + [0.4 % of final value; min. 0.02 m/s])
±(3 % of meas. value + [0.4 % of final value; min. 0.02 m/s])
Response time (t
90
) w
N
3 s (jump from w
N
= 5 m/s to 0 m/s)
Temperature gradient
2 K/min (w
N
= 5 m/s)
Measuring range T
M
-
20 … +70 °C
Mesuring accuacy
17
T
M
±1 K (10 … 30 °C)
±2 K (remaining measuring range)
Operating temperature
-20 ... +70 °C (electronics)
Humidity range
Measuring mode: Non-condensing (< 95 % RH)
Operating pressure
Atmospheric (700 ... 1,300 hPa)
Operating voltage
24 V
DC
± 10 %
Current consumption
Typ. < 60 mA, max. 100 mA
Signal outputs
0 ... 10 V (R
L
≥ 10 kΩ; C
L
≤ 10 nF)
Electrical connection
Cable (pigtail)
18
, 4 x 0.14 mm
2
, sheathing PVC (silver gray)
Default length: 2 m
Optional length:
3 … 15 m (step: 1 m)
Protection class
III (SELV) / PELV (EN 50178)
Type of protection
Probe: IP67; enclosure: IP65
Minimum immersion depth
58.5 mm
Probe diameter
9 mm
Installation length
100 / 200 / 350 / 500 mm
Materials
PBT (Ultradur B4300 G4), stainless steel 1.4404
Coating (optional): Polyurethan derivate (black)
Weight
100 g max. (2 m cable)
16
Under reference conditions
17
w
N
> 1 m/s
18
With wire cable ferrules
