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STA2 - In Duct Hot-wire Anemometer

Litres per second without a Hood - take the velocity - punch in your duct size & show the air volume in litres per second

Get the STA2 for your HVAC-R Air Balancing Needs

  • In-duct air balancing with fast response time
  • Minimizes turbulence effect
  • Hands free testing
  • 950mm telescoping probe for in-duct traversing
  • Dual display shows combo of real-time litre per second,, air velocity, or temp
  • Include a hard blow-moulded protective case

The STA2 is a Hot-wire Anemometer built for the HVACR professionals' air balancing needs.  The compact probe tip makes measuring air velocity directly in the duct a breeze.  It's great for traversing a duct and automatically calculating l\s without the hassle and expense of a bulky hood.  The 950mm telescoping probe's laser etched ruling and flattened edges allows techs to locate proper measurement points within a duct, and ensures that the probe is properly aligned.

This in duct hot-wire anemometer quickly calculates litres per second [l\s] from air velocity and free area.  With the intuitive interface, the STA2 makes it easy to capture the correct data.




  • Hot-wire Anemometer - STA2
  • Stabilizing Cone
  • Blow-molded Case with Padding



  • Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C),<90%RH
  • Temperature coefficient: 0.1 x (specified accuracy) per °C for 0°C to 18°C, 28°C to 50°C (32°F to 64°F,82°F to 122°F)
  • Operating environment: -4°F to 122°F (-20°C to 50°C) at <75%RH
  • Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH (with battery removed)
  • Battery: 9V
  • Battery life: 20-35 hours approx. (alkaline)
  • Battery indication: is displayed when the battery voltage drops below the operating level.
  • Auto Power off: after 15 minutes of inactivity if APO is active.
  • Over range: “OL” or “-OL” is displayed
  • Dimensions: 7.2 in (H) x 2.5 in (W) x 1.3 in (D) [185mm (H) x 65mm (W) x 35mm (D)]
  • Weight: 12 oz. (340g) including battery
  • Sensor type: Micro-glass bead thermistor.
  • Resolution: 1 fpm (0.01 m/s)
  • Range: 40-3960 fpm (0.20-20.00 m/s)
  • Accuracy: ± (5%+1 dgt) reading or ± (1%+1dgt)full scale
  • Units: fpm, m/s, km/hr, mph
  • Temperature Sensor type: Thermistor
  • Range: -4°F to 140°F (-20°C to 60°C)
  • Resolution: 0.1°C, 0.1°F
  • Accuracy:
    ±1.0°F for 32°F to 113°F
    ±2.0°F for -4°F to 32°F, 113°F to 140°F
    ±0.5°C for 0°C to 45°C
    ±1.0°C for -20°C to 0°C, 45°C to 60°C

Brand Fieldpiece
Shipping Weight 2.0000kg
Shipping Width 0.200m
Shipping Height 0.350m
Shipping Length 0.400m
Shipping Cubic 0.028000000m3
Unit Of Measure ea
Assembled Length 0.400m
Assembled Height 0.350m
Assembled Width 0.200m
1 - Year from Date of Purchase
​Excludes Consumables such as Filters, Gaskets, Leads, Batteries, Fuses, Sensors, Case etc

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