Extech Instruments HD300-NISTL User Manual page 2

Introduction
Congratulations on your purchase of the Extech HD300 CFM Thermo-Anemometer. This
handheld meter measures and displays air velocity, air flow (volume), temperature of air,
and surface temperature (using the built-in non-contact IR thermometer). This meter is
shipped fully tested and calibrated and, with proper use, will provide years of reliable
service.
Features
CFM/CMM Thermo-Anemometer with built-in non-contact IR Thermometer
measures remote surfaces to 932°F (500°C) with a 30:1 distance to spot ratio and
Laser pointer.
Simultaneous display of Air Flow or Air Velocity plus ambient temperature.
Eight (8) memory locations permit the user to store multiple air duct AREA values
for fast and easy recall.
Twenty (20) reading average for Air Flow or Air Velocity.
Large backlit LCD display.
3% velocity accuracy via low friction 2.83" (72mm) ball-bearing vane wheel on a
3.9' (120cm) cable.
Data Hold and Max/Min/Avg.
Auto Power OFF (can be disengaged).
Safety
• Use extreme caution when the laser pointer beam is on
• Do not point the beam toward anyone's eye or allow the beam
to strike the eye from a reflective surface
• Do not use the laser near explosive gases or in other
potentially explosive areas
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HD300 V2.0 11/07