TVV
TVV is composed of a rotating body connected to three conical shaped elements (cups), and it measures the wind speed exploiting the wind resistance to rotational movement of the cups
TVV
WIND SPEED SensorCategories: Meteorology
TVV is composed of a rotating body connected to three conical shaped elements (cups), and it measures the wind speed exploiting the wind resistance to rotational movement of the cups. The rotating system is equipped with a six poles cylindrical magnet. A Hall effect sensor detects the rotary motion that generates in the meantime an impulse at the passage of each pole. The dimensions of the cups and the lightness of their material have been thoroughly picked to achieve a very low mechanical inertia and, consequently, to ensure a high sensitivity of the measurement. The structure of TVV is very robust and the sensing element has a reliable durability and a proper resistance even at high wind speeds. Furthermore, its simple and compact design facilitates the installation and makes easier the on-site maintenance activities. The sensor is supplied with power and signal cable (12m), and it is available upon request on heated version, powered at 24V (alternating or direct current).
Main features
• Low inertia and high resolution
• High accuracy
• Protection against overvoltages
• Equipped with heating system (optional)
Product Detail Description
Measurement performance | |
---|---|
Wind speed [m/s] | |
Transducer | 6-pole magnet and stabilized Hall effect sensor |
Measurement range | 0.25 ÷ 50 |
Resolution | 0.1 |
Accuracy | < 0.15 or 1% of the measured value |
Operating conditions | |
Temperature | -40°C ÷ +70°C |
Humidity | 0% ÷ 100% |
Outputs | |
Natural | Open drain output: V measurement is given by the frequency f as following: Vv = f [Hz] / 3.3676 [Hz/ m/s] + 0.1881 [m/s] |
Tension | 0÷2V → 0 ÷ 50 [m/s] |
Current | 4÷ 20 mA <> 0÷ 50 [m/s] |
RS485-Modbus | Wind speed [m/s] |
SDI - 12 | Wind speed [m/s] |
Power supply and consumption | |
Voltage supply | 7 ÷ 24 Vdc |
Heating system voltage supply | 12 ÷ 24 V [DC o AC] |
Heating system power | 40 W @ 24 V |
Mechanical specifications | |
Protective body | Cups: PA6 + 30% fiberglass, the entire body is made of aluminium alloy and stainless steel screws |
Weight | 750 g |
Dimensions | OMAx = 230 mm; Height = 336 mm |
Electrical connections | 1P67 / 7 pole male connector |
Ordering codes | |
Natural output | t031-TVV-N |
Current output, Tension output and RS485-Modbus output | t031a-TVV-IVS |
SDI-12 serial output | t031d-TVV-12 |
Heated version, Natural output | t032-TVVR-N |