Anemometer Adapter (AM-402) For Digital Multimeters

Lutron Anemometer Adapter (AM-402) For Digital Multimeters

The Lutron AM-402 is a vane-type anemometer adapter designed to work with any digital multimeter that has a 200 mV DC voltage range and at least 10 MΩ input impedance. When connected, it allows the multimeter to function as a professional airflow and wind-speed meter. It is ideal for checking HVAC systems, air movement in ducts, environmental testing, and general airflow diagnostics. The separate low-friction vane probe ensures accurate readings across multiple velocity units.

• Transforms a multimeter into a full airflow meter: Requires only a 200 mV DC range.
• Multiple airflow units: m per s, km per h, ft per min, and knots.
• Separate vane probe: Low-friction ball-bearing design improves sensitivity and accuracy.
• Direct output scaling: One millivolt output per unit (varies by selected scale).
• Built-in low battery indicator: Ensures reliable field operation.
• Compact handheld module: Lightweight and easy to use alongside any DMM.
• Ideal for HVAC, environmental, and airflow verification applications.

Specifications

• Air Velocity Ranges: 0.4 to 30.0 m per s; 1.4 to 108.0 km per h; 80 to 5910 ft per min; 0.8 to 58.3 knots.
• Output Scaling: m per s: 1 mV per 1 m per s; km per h: 1 mV per 1 km per h; ft per min: 1 mV per 100 ft per min; knots: 1 mV per 1 knot.
• Accuracy (at 25 m per s): m per s: ± (2 percent plus 0.1 mV); km per h: ± (2 percent plus 0.3 mV); ft per min: ± (2 percent plus 0.2 mV); knots: ± (2 percent plus 0.2 mV).
• Sensor Type: Conventional twisted vane arm assembly.
• Bearing System: Low-friction ball bearing design.
• Power Supply: One 006P 9 V heavy-duty battery.
• Low Battery Indicator: Integrated.
• Operating Temperature: 0°C to 50°C (32°F to 122°F).
• Operating Humidity: Less than 80 percent RH.
• Dimensions: Main instrument: 100 × 50 × 25 mm (3.9" × 2.0" × 1.0"); Sensor head: Round, 72 mm diameter (2.83").

Accessories Included

• Vane sensor probe (1 piece).
• Instruction manual (1 piece).

Optional Components

• Compatible DMM models supporting 200 mV DC range.
• Extension cables for remote airflow measurement.
• Carrying cases for field transport.