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.
| Measured values | air velocity, temperature |
|---|---|
| Medium | air or other non-flammable/non-aggressive gases |
| Output voltage | 2x 0..10 V, min. load 1 kΩ |
| Output current | 2x 4..20 mA, max. load 400 Ω |
| Output switch contact | AVT LCD relay: relay with change-over contact (volt free contact), 250 V ~ / 6 A, 30 V = / 6 A |
| Power supply | 15..24 V = (±10%) or 24 V ~ (±10%) SELV |
| Power consumption | max. 2 W, AVT-R LCD: max. 2,4 W |
| Measuring range temp. | 0..+50 °C |
| Measuring range velocity | 0..2 m/s, 0..10 m/s, 0..20 m/s, selectable at the device |
| Accuracy temperature | <0,5 K (v> 0,5 m/s), ±0,5 K (typ. at 21 °C) |
| Accuracy velocity | 0..2 m/s: <0,2 m/s + 5% of measuring value, 0..10 m/s: <0,5 m/s + 5% of measuring value, 0..20 m/s: <1,0 m/s + 5% of measuring value (typ. at 21 °C) |
| Sensor | calorimetric measuring principle |
| Display | LCD 3,5", 45.7 x 12.7 mm, optional, for indication of measured values |
| Enclosure | ABS, cover PC |
| Protection (IP) | IP54 according to EN 60529 |
| Cable entry | M16 for wire max. Ø=8 mm, AVT-R LCD: 2x M16 |
| Electrical connection | terminal block, max. 1,5 mm² |
| stainless steel V2A, L=210 mm | |
| Weight | 220 g |
| Ambient condition | 0..+50 °C, max. 85% rH short term condensation |
| Delivery content | incl. mounting flange |
| Notes | optional with display "LCD", optional with relay, Adjustable Immersion length: 50..180 mm, using mounting flange, adjustable switching threshold and hysteresis |