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USER GUIDE Heavy Duty CFM-CMM Thermo-Anemometer With built-in non-contact IR Thermometer and Laser Pointer Model HD300...
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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.
Press again to unlock display. This button also functions as the right arrow button in the AREA mode. NOTE: Battery Compartment and Tripod Mount are located on the reverse side of the meter HD300-EU-EN V2.2 07/13...
If the CFM or CMM reading exceeds 9999, the display will show the X10 or X100 multiplier in the lower right hand corner of the LCD indicating that the displayed value must be multiplied by 10 or 100 to arrive at the correct flow measurement value. HD300-EU-EN V2.2 07/13...
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The HOLD button in the lower keypad area freezes the displayed air velocity or air flow measurements. Press again to unlock the display. The HOLD indicator will appear on the LCD when the display is in Data Hold mode. HD300-EU-EN V2.2 07/13...
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MIN-MAX-AVG Recording Modes The HD300 has several MIN-MAX-AVG modes described separately below. MIN-MAX-AVG functions are available for all measurements made with the vane sensor (air velocity, air flow, and air temperature). Continuous Moving Average In the Continuous Moving Average mode the meter displays the continuous average of the measured readings for up to a 10 hour period.
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Auto Power OFF override The HD300 is programmed to turn off automatically after idling for 15 minutes. This is designed to save battery life in the event the meter is left ON inadvertently. (Note: When the meter is in the “CFF/CMM”...
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To compensate, cover the surface under test with masking tape or flat black paint. Allow time for the tape to reach the same temperature as the material underneath then measure the temperature of the tape or the painted surface. HD300-EU-EN V2.2 07/13...
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Timber 0.90 Ceramic 0.90 to 0.94 Paper 0.70 to 0.94 Marble 0.94 Chromium oxides 0.81 Plaster 0.80 to 0.90 Copper Oxides 0.78 Mortar 0.89 to 0.91 Iron Oxides 0.78 to 0.82 Brick 0.93 to 0.96 Textiles 0.90 HD300-EU-EN V2.2 07/13...
C (32 to 122 F); 80% RH max. Sensor: 0 to 60 C (32 to 140 Dimensions / Weight Main instrument: 203 x 75 x 50mm (8.0 x 3.0 x 1.9") Sensor head: 72mm (2.8”) diameter Weight 280g (9.8 oz.) HD300-EU-EN V2.2 07/13...
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