Air Flow Transducer for air flow, volume flow, temperature for duct m, 219,41 €

The flow transmitter FS5021 detects the air flow, volume flow and temperature in ventilation ducts. The transmitter converts the measurement result into a linear output signal 0-10 V or 4-20 mA for further processing. As an option, a potential-free changeover contact and / or a backlit LCD display are available. In the case of display devices, the DIP switch can be used to switch to volumetric flow. For this the channel cross-sectional area must be specified in the menu. The volume flow is then calculated from the flow velocity. 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 temp.:	0...+50°C
Measurement range flow:	0-20 m/s
Measurement range volume flow (calculated):	0-200.000 m³/h
Scales:	0-3 m/s, 0-5 m/s, 0-10 m/s, 0-15 m/s, 0-20 m/s
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
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
Switching Hysteresis Relay:	2% of the selected scaling (without display), 0,5...5% of the selected scaling adjustable (with display)
Electrical connection:	screw terminals max. 1,5 mm²
Display:	optional LCD display with backlight on/off/auto
Output attentuation:	5 s
Running-in time:	< 30 s at initial operation because of tempering
Material:	Protection tube: stainless steel V2A
Cable gland:	PG11 high-strength cable gland with strain relief
Housing:	Polycarbonate PC UL 94 V0 with hinge locks, color signal white similar to RAL 9003
Dimensions:	Housing: L 89 x W 80 x H 47 mm, Immersion depth max.: 205 mm, Protection tube: Ø 16 mm
Protection type:	Housing/electronic: IP65, Sensor: IP30
Protection class:	III
Working range:	0,3-20 m/s, 0...98% r.H. in contaminant-free, non-condensing air
Working temperature:	-20...+50°C
Storage temperature:	-20...+50°C
Installation:	mounting flange (in scope of delivery)
Approvals:	CE, EAC, RoHS