DV-DVR Wind Direction Sensor
- Manufacturer: Nesa
- Category: Meteorology – Climatology, SENSORS, Wind
The NESA DV-DVR is a wind direction sensor (gonioanemometer) with a precision potentiometer. DV is the standard version and DVR is the heated version, both with the same features. Measurement range 0 ÷ 359° (360°), resolution 0.1° and accuracy ± 1° (sensitivity: 0.25 m/s; threshold < 0.5 m/s).
Outputs: 0-2Vdc (A), 4-20mA (B), RS485/Modbus (C) or 10Kohm potentiometer (N). Power supply: 10-28Vdc <0.1W; heated version: 5W@12Vdc. IP67 quick-connect. WMO and CE compliant.
Key points
- Measurement range 0 ÷ 359° (360°); resolution 0.1°; accuracy ± 1°
- Transducer: vane with precision potentiometer
- Outputs: 0÷2Vdc (A), 4÷20mA (B), RS485 / Modbus (C) or 10Kohm potentiometer (N)
- Power supply 10 ÷ 28Vdc <0.1W; DVR heater 5W@12Vdc
- -10 to +70°C; -35 to +70°C in the heated version; gusts 0 to 80 m/s
- Anodized aluminum and stainless steel; < 460g; IP67 quick connection
Technical Frequently Asked Questions
What does the DV-DVR measure?
Wind direction, from 0 to 359° (360°), with 0.1° resolution and ± 1° accuracy.
What exits does it have?
A: 0-2Vdc. B: 4-20mA. C: RS485 / Modbus. N: 10Kohm natural potentiometer. Output impedance of 50 ohms in versions A and B.
What is the difference between DV and DVR?
The DVR has a heater (5W@12Vdc), with pins 6 and 7 for its power supply (+12V Heat and Gnd Heat), and works from -35 to +70°C; the DV, from -10 to +70°C.
How do I order it?
Sensor (DV or DVR), output (A, B, C or N), sensor-datalogger cable (05, 10 or xx, length in meters to be specified) and sensor support (SS1, SS2 or SS3). Manufacturer example: DV A 10 SS2.
Properties
| Feature | Specification |
|---|---|
| Measurement and operating principle | |
| Measured magnitude | Wind direction |
| Typical measurement range | 0 ÷ 359° (360°) |
| Resolution | 0,1° |
| Precision | ± 1° |
| Sensitivity | 0.25 m/s |
| Threshold | < 0.5 m/s |
| Transducer type | Weather vane with precision potentiometer |
| Calibration | Goniometric system, by comparison with a certified goniometer |
| Regulatory compliance | EC |
| Standards | WMO |
| Exit signals | |
| Exit A | 0÷2Vdc |
| Exit B | 4÷20mA |
| Exit C | Digital RS485 / Modbus |
| Output N (natural) | 10Kohm Potentiometer |
| Output impedance | 50 ohm in versions A and B |
| Power supply, environment, and mechanical data | |
| Food and consumption | 10 ÷ 28Vdc <0.1W |
| Power consumption with heater (DVR version) | 5W@12Vdc |
| Protections | Polarity reversal and transients |
| Operating conditions | -10 to +70°C |
| Gusts | 0 ÷ 80 m/s |
| Operating conditions (heated version) | -35 to +70°C |
| Made in | Anodized aluminum and stainless steel |
| Connection | IP67 Quick Connect |
| Weight | < 460g |
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