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The Sensor measures: | Laminar Air Flow & Temp. |
Output Signal: | 0-10 V or 4-20 mA |
Power Supply: | 24 Vdc |
Sensor for use in: | Indoor |
The flow transmitter FS5020 detects the laminar air flow and the temperature in air ventilation ducts. The transmitter converts the measurement values into a linear 0-10V or 4-20mA output for further processing.
As an option, a potential-free changeover contact and / or a backlit LCD display are available.
The content of the backlit display can be rotated by the menu in 90 ° increments. The actual value, the set switching threshold, the relay status, the MIN / MAX measured values of the selected interval, etc. can be read off.
The airflow sensor works according to the calorimetric measuring principle and has 5 freely selectable scalings, which can simply be switched over as required by innovative DIP-switch technology.
In addition, the switching threshold, hysteresis etc. can be specified.
Measuring principle |
calorimetric measuring method |
Measurement range flow |
0-5 m/s |
Scales |
0-1 m/s, 0-2 m/s, 0-3 m/s, 0-4 m/s, 0-5 m/s |
Measurement range temp. |
0...+50°C |
Accuracy |
±0,3 m/s + max. ±4% FS (@ 20°C, 45% r.H., 1013 mbar), ±0,5 K (@ 20°C, > 1 m/s) |
Temperature dependency |
±1% FS / 10 K |
Long term stability |
±1% FS/year, ±0,2 K/year |
Response time (t90) |
> 4 s @ 10 m/s |
Running-in time |
< 30 s at initial operation because of tempering |
Output attentuation |
5 s |
Supply voltage |
24 V AC/DC |
Current consumption at 0-10 V |
Ø 100 mA |
Current consumption at 4-20 mA |
< 140 mA |
Current consumption at relay |
< 120 mA |
Analogue output 0-10 V |
3-wire connection, min. load resistance 100 kOhm |
Analogue output 4-20 mA |
3-wire connection, max. RLoad(Ohm) = 300 Ohm |
Alarm output |
1 x potential-free change-over contact, 48 V, 1 A |
Hysteresis |
5% Span, adjustable with display devices |
Electrical connection |
screw terminals max. 1,5 mm² |
Housing |
Polycarbonate PC UL 94 V0 with hinge locks, color signal white similar to RAL 9003 |
Cable gland |
PG11 high-strength cable gland with strain relief |
Display |
optional 2-line LCD-Display, to display the measured values on location |
Material |
Protection tube: stainless steel VA 1.4571 |
Protection type |
Housing/electronic: IP65, Sensor: IP30 |
Protection class |
III |
Working range |
0,3-20 m/s |
Working temperature |
-20...+60°C |
Storage temperature |
-20...+50°C |
Installation |
mounting flange (in scope of delivery) |
Approvals |
CE, EAC, RoHS |
REF. |
Flow |
Temperature |
Output |
Equipment |
FS5020-I-F1-DR |
0-5 m/s |
- |
4-20 mA |
Display, Relay |
FS5020-I-F1-R |
0-5 m/s |
- |
4-20 mA |
Relay |
FS5020-I-F1T1-DR |
0-5 m/s |
0...+50°C |
4-20 mA |
Display, Relay |
FS5020-I-F1T1-R |
0-5 m/s |
0...+50°C |
4-20 mA |
Relay |
FS5020-U-F1-DR |
0-5 m/s |
- |
0-10 V |
Display, Relay |
FS5020-U-F1-R |
0-5 m/s |
- |
0-10 V |
Relay |
FS5020-U-F1T1-DR |
0-5 m/s |
0...+50°C |
0-10 V |
Display, Relay |
FS5020-U-F1T1-R |
0-5 m/s |
0...+50°C |
0-10 V |
Relay |
FS5020-X-F1-R |
0-5 m/s |
- |
- |
Relay |
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