Download Extech Instruments HD300 User guide

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 500°C (932°F) 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 72mm (2.83”) ball-bearing vane wheel on a 120cm (3.9’)
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-EU-EN V2.2 07/13