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Stevens Water Monitoring Systems, Inc.
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Met One - Model 010C/020D - Wind Speed ...

Met One - Model 010C/020D -Wind Speed / Direction Sensor

FromStevens Water Monitoring Systems, Inc.

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The 010C Wind Speed Sensor provides accurate and detailed information on horizontal wind speed. The lightweight three-cup anemometer is used in virtually all applications where fast response and low starting threshold(s) are of paramount importance. The 020C Wind Direction Sensor provides azimuth data for use in micrometeorological measurements related to operational studies and research. The lightweight airfoil vane is directly coupled to a single precision potentiometer. These sensors are especially useful when a low starting threshold, a high damping ratio, or a short delay distance is required. Both wind speed and wind direction sensors are used in environments ranging from Antarctic cold to arid desert heat. The 01OC, 010C-1, and 020C instruments meet U.S. EPA and NRC performance specifications for critical regulatory, research or scientific measurement applications.

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Low starting threshold
Internal heater for long bearing life
Low profile to minimize “sensor turbulence”
High damping ratio
Short delay distance
Quick-disconnect connector
Field-replaceable electronic components
Ingress Protection Level 65 (IP65)

The 010C and 020C are made of stainless steel and anodized aluminum components and are functionally more reliable than any other sensors of their kind:

Built-in electrical field surge protection greatly reduces problems associated with static fields, near-miss lightning hits, and poor grounding systems
Inclusion of Met One Instruments’ internal heater (AC use only) provides positive clean aspiration through the bearings, greatly increasing their life
Optional, external de-icing heater sleeve for applications where freezing rain, ice, and low wind speeds may be encountered

Performance Characteristics

Maximum Operating Range: 0-135mph (0-60m/s)
Starting Speed:0.5 mph (0.22 m/s)
Calibrated Range: 0 -112 mph (0 -50 m/s)
Accuracy: ±1% or 0.15 mph (0.07 m/s)
Resolution <0.1 mph or m/s
Temperature Range: -50°C to +65°C (-58°F to +149°F)
Distance Constant: less than 5 It (1.5m) of flow (meets EPA specifications)

Electrical Characteristics

Power Requirements: 12 VDC at 10 mA, 12 VDC at 350 mA for internal heater
Output Signal: 11 volt (pulse frequency equivalent to speed)
Output Impedance: 100 Ω maximum

Physical Characteristics

Weight: 1.5 Ibs (.68 kg)
Finish: Clear anodized aluminum; Lexan cup assembly

Cable & Mounting

PN 1953 Cable Assembly; specify length in feet or meters
Mounting: PN 191 Crossarm Assembly

Performance Characteristics

Azimuth: Electrical 0° -357°
Mechanical 0° -360°
Threshold: 0.5 mph (0.22 m/s)
Linearity: ±1/2% of full scale
Accuracy: ±3°
Resolution <0.1 °
Damping Ratio: Standard 0.6 (magnesium tail) (meets EPA specifications)
Delay Distance: Less than 3 ft (91 cm)
Temperature Range: -50°C to +65°C (-58°F to +149°F

Electrical Characteristics

Power Requirements: 12 VDC at 10 mA, 12 VDC at 350 mA for internal heater
Output Signal: 0-5, 0-2.5 (optional 0-1) VDC for 0° -360°
Output Impedance: Ωmaximum

Physical Characteristics

Weight: 1.5 Ibs (.68 kg)
Finish: Clear anodized aluminum

Cable & Mounting

PN 1957 Cable Assembly; specify length in feet or meters PN 191-1
Mounting: Crossarm Assembly

Wind Sensors W/ Aluminum Cups & Vane

010C Distance Constant: 15 ft. (4.6 m) aluminum cup assembly (meets EPA specifications)
020D Damping Ratio: 0.25 (aluminum tail)

Specifications are subject to change at any time.