The Extech AN340 Anemometer/Psychrometer is a versatile handheld tool designed for comprehensive air parameter measurement, with a focus on accessibility in tight spaces. It comes equipped with a telescoping probe—featuring an 18mm diameter vane sensor that easily fits into small air vents and ducts—capable of extending up to 3.3ft (1m) in length. This design solves the common challenge of measuring air flow in narrow HVAC ducts or hard-to-reach vents, making it a go-to tool for precision tasks.

The AN340 measures five key air parameters: Air Velocity/Volume, Temperature, Humidity, Wet Bulb, and Dew Point, providing all-in-one data for HVAC troubleshooting, manufacturing quality control, or R&D projects. For data analysis, users can store up to 12,000 readings automatically (or 99 manually) and adjust the sampling rate from 1 second to 4 hours 59 minutes 59 seconds—flexible enough for both real-time checks and long-term monitoring. A built-in PC interface further simplifies data transfer, allowing for in-depth analysis on a computer.

Applications for the AN340 Anemometer/Psychrometer:

• HVAC with small ducts and vents: Measuring air flow and humidity in narrow ductwork where standard probes can’t fit.
• Manufacturing: Ensuring consistent air conditions for product quality (e.g., electronics assembly, food processing).
• Engineering: Validating air flow in equipment designs or building systems.
• Appliance Testing: Checking air performance of HVAC appliances (e.g., air conditioners, heaters).
• Research and Design: Collecting detailed air parameter data for lab experiments or product development.
• and more! (e.g., commercial building maintenance, cleanroom monitoring)

Features

• Multi-parameter air measurement: Captures air velocity/volume, temperature, humidity, wet bulb, and dew point—eliminating the need for multiple tools.
• Flexible air velocity/flow ranges to cover diverse applications:
  • Air Velocity: 0.5 to 20m/s (100 to 3940ft/min)
  • Air Flow (CFM/CMM): 0 to 99999
• Temperature, humidity, and wet bulb/dew point ranges optimized for indoor/outdoor industrial use:
  • Temp/Wet Bulb/Dew Point: -4 to 140°F (-20 to 60°C)
  • Humidity: 0.1 to 99.9%RH
• 3.3ft (1m) telescoping probe with 18mm vane sensor: Fits into small vents/ducts and reaches distant measurement points.
• High-capacity data storage:
  • Manual storage/recall: Up to 99 readings (for quick spot checks)
  • Automatic datalogging: Up to 12,000 readings (for long-term monitoring)
• Adjustable data sampling rate (1s to 4hr 59min 59s): Customizable for real-time or extended measurement tasks.
• Min/Max/Avg readings function: Summarizes key data for quick performance assessment (e.g., average air velocity in a duct).
• User-friendly features: Data hold (freezes readings for easy recording), Auto Power Off (with disable, for prolonged use).
• Built-in PC interface: Enables seamless data transfer to computers for detailed analysis, reporting, or documentation.