1
Introduction
The 923 Air Velocity Meter (the Product) is a handheld, indoor-air
quality diagnostic instrument. It uses a probe that can be used
while attached to the Product or in wireless mode away from the
Product base.
The Product measures, calculates, and displays:
• Air temperature measured in Celsius (°C) or Fahrenheit (°F).
• Air velocity (actual) measured in m/s or fpm.
• Flow rate displayed in l/s, cfm or m
3
/hr.
• Average indications for temperature, velocity, and flow.