The HD51.3D17 2-Axis Ultrasonic Static Anemometer represents a cutting-edge meteorological solution developed by Senseca (formerly Delta Ohm, part of the GHM Group - Italy), a world-renowned European manufacturer of precision environmental monitoring instrumentation. The unit is designed for professional weather observation, renewable energy automation, and demanding industrial applications where exceptional long-term accuracy and zero-maintenance reliability are mandatory.

1. ADVANCED STATIC ULTRASONIC TECHNOLOGY
Unlike conventional mechanical anemometers that rely on rotating cups or directional vanes—which frequently suffer from bearing wear, sand/dirt clogging, icing, or blade damage during high-velocity wind events—the Senseca HD51.3D17 operates using ultrasonic Time-of-Flight acoustic transit technology between two pairs of orthogonally oriented transducers across 2 axes (X-Y).
• Zero Moving Mechanical Parts: Eliminates friction, mechanical wear, and mechanical inertia.
• Zero Starting Threshold: Detects the slightest air movements and low-speed drafts with exceptional responsiveness.
• Long-term Stability: Delivers uninterrupted multi-year performance without requiring routine recalibration or physical servicing.

2. COMPREHENSIVE 4-IN-1 ENVIRONMENTAL MONITORING
The HD51.3D17 integrates four vital atmospheric parameters into a single, compact, aerodynamic housing:
• Wind Speed: Instantaneous velocity, statistical average, and wind gust measurement.
• Wind Direction: Complete 0 to 360° compass monitoring with no mechanical dead zones.
• Air Temperature: High-precision embedded temperature sensing element.
• Relative Humidity (RH): Low-drift capacitive sensor providing accurate humidity profiling and dew point calculation.

3. STANDARD 4…20 mA ANALOG OUTPUT
Equipped with isolated 4…20 mA analog current loop outputs for each measured parameter, the HD51.3D17 provides superior immunity against electromagnetic interference (EMI) and enables long-distance signal transmission directly into PLCs, RTUs, SCADA networks, industrial Dataloggers, or Building Management Systems (BMS).

4. HEAVY-DUTY INDUSTRIAL CONSTRUCTION
Engineered with UV-stabilized, high-grade engineering polymers and corrosion-resistant alloys, the HD51.3D17 carries an IP66 ingress protection rating. It effortlessly withstands extreme environmental conditions, ranging from saline coastal atmospheres and offshore marine setups to high-altitude mountain stations and heavy industrial plants.

• Brand: Senseca (Delta Ohm / GHM Group)
• Model: HD51.3D17
• Origin: Italy (100% Italy Origin)
• Measuring Principle: 2-Axis Ultrasonic Time-of-Flight (Acoustic transit)
• Mechanical Type: Static solid-state (No moving mechanical parts)

[WIND SPEED MEASUREMENT]
• Range: 0 … 60 m/s (or standard calibrated 0 … 50 m/s)
• Resolution: 0.01 m/s
• Accuracy: ± 0.2 m/s or ± 2% of reading (whichever is greater)
• Starting Threshold: 0.01 m/s

[WIND DIRECTION MEASUREMENT]
• Range: 0 … 360° (Full range, no dead band)
• Resolution: 0.1°
• Accuracy: ± 2°

[AIR TEMPERATURE MEASUREMENT]
• Range: -40°C … +70°C
• Resolution: 0.1°C
• Accuracy: ± 0.15°C (@ 0°C)

[RELATIVE HUMIDITY (RH) MEASUREMENT]
• Range: 0 … 100% RH
• Resolution: 0.1% RH
• Accuracy: ± 1.5% RH (within 10% … 90% RH range)

[ELECTRICAL & OUTPUT SIGNALS]
• Output Signal (Analog): 4 … 20 mA (for each measurement channel)
• Maximum Output Load: 500 Ω
• Power Supply: 10 … 30 Vdc
• Power Consumption: Ultra-low power design, ideal for solar-powered remote weather stations

[ENVIRONMENTAL & PHYSICAL SPECIFICATIONS]
• Ingress Protection: IP66 (Dust-tight and protected against powerful water jets)
• Operating Temperature: -40°C … +70°C
• Mounting Connection: Standard meteorological mast fitting Ø 40 mm
• Electrical Connector: Waterproof industrial circular M12 multi-pin connector