Duct Sensors

AVT

Air velocity transmitter with 3 field-selectable measuring ranges for measuring and monitoring air velocities in ventilation systems in order to control regulation flaps or damper actuators. An integrated LCD and relay contacts for limiting the air volume are available as options.

Application/type	Air velocity and temperature transmitter
Purpose	Measure values
Measured values	temperature, Air velocity
Interface	Active, 0..10 V, 4..20 mA, Switch contact
Configuration	jumper
Sensor	calorimetric measuring principle
Output voltage	2x 0..10 V, min. load 1 kΩ
Output current	2x 4..20 mA, max. load 400 Ω
Output switch contact	changeover contact, floating, 250 V ~ / 6 A, 30 V = / 6 A
Operating range temperature (°C)	0..+50
Output signal temperature	0..+50 °C
Operating range humidity	max. 85% rH short term condensation
Accuracy temperature	±0,5 K (typ. at 21 °C), at air velocity >0,5 m/s <0,5 K
Measuring range velocity (ppm)	0..2, 0..10, 0..20 m/s, optionally configurable
Accuracy velocity	<0,2 m/s + 5% of measured value (typ. at 21 °C), <0,5 m/s + 5% of measured value (typ. at 21 °C), <1 m/s + 5% of measured value (typ. at 21 °C)
Power supply	15..24 V = (±10%) SELV, 24 V ~ (±10%) SELV
Power consumption	max. 2 W, max. 2,4 W
Material in touch with media	Sensor probe, Ø=10 mm, stainless steel V2A (1.4305), length 210 mm
Installation length (mm)	195
Display	LCD 3.5", 45.7x12.7 mm to show measured value
Enclosure	ABS, cover PC
Colour	light grey
Protection (IP)	IP54, according to EN 60529
Connection	cable entry M16 for wire Ø=8 mm, 2x cable entry M16 for wire Ø=8 mm, terminal block, max. 1,5 mm²
Delivery content	incl. mounting flange
Device length (mm)	90
Device width (mm)	95
Device height (mm)	246
Weight (g)	220
Notes	adjustable immersion length using mounting flange 50..180 mm, adjustable switching threshold and hysteresis
Catalogue table	Air velocity and temperature transmitter