AIR FLOW MONITOR – STF1 STF2

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APPLICATION

The STF1 is an air flow monitor based on a microcontroller that monitors non-aggressive, gaseous flows in the range of approx. 0.5 to 10/30 m / s. An output signal of 0-10 V and 4-20 mA is available. A separate 010 V output signal for the temperature can also be tapped.

Data Sheet: STF1 / STF2 

TECHNICAL SPECIFICATIONS

Operating voltage: 24 VAC / VDC
Power consumption: 50mA + 40mA with current output
Output flow: 0… 10 V (Lmin = 1 kOhm), linear 4… 20 mA (Lmax = 0.4 kOhm), linear
Output temperature: 0… 10 V (Lmin = 1 kOhm), linear 4… 20 mA (Lmax = 0.4 kOhm), linear
Measuring range: 0 … 2 m / s, 0 … 10 m / s, 0 … 20 m / s
Relay output (only STF1): Switching voltage 250 VAC, 6A / 30VDC, 6A NC or NO contact, opens or closes with flow
Function with current: Switching point adjustable via potentiometer
Display: Only with STF1 45.7 x 12.7mm
Electrical connection: 1.5mm² screw terminals
Media temperature range: 0 ° C … +50 ° C
Switching point: Adjustable via potentiometer
Installation length: Adjustable from 50-180mm
Protection class sensor: IP54
Housing dimensions: L = 90 mm; B = 95 mm; H = 36 mm
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