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Summary of Contents for Extech Instruments 407119A
- Page 1 User's Guide Heavy Duty Hot Wire CFM Thermo-Anemometer Model 407119A 73.2 F Ft/min HOLD REC. POWER Enter UNIT / ZERO FUNCTION AVERAGE AREA SETUP Hot Wire Anemometer 407119A...
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Page 2: Warranty
Introduction Congratulations on your purchase of the Extech 407119A Thermo-Anemometer. The 407119A measures air velocity, air volume, and air temperature. It uses a telescoping probe antenna to allow convenient access to grills and diffusers. Careful use of this meter will provide years of reliable service. The Model 407119A features are listed below. -
Page 3: Specifications
0.001 to 30.0 m CFM (cubic feet per minute) 0 – 1,271,200 ft /min 0.01 to 100 0.01 to 322.91ft Air Temperature Range Resolution Accuracy 32 to 122 ±1.5 F (0.8 (0 to 50 Model 407119A Version 5.0 October 2005... -
Page 4: Meter Description
AVG. START, CLEAR, and ►right arrow button AREA SET button Tilt stand Battery compartment / Cover Tripod mount LCD contrast adjustment pot System reset switch RS-232 Output terminal DC9V power adaptor 15 14 13 12 Model 407119A Version 5.0 October 2005... -
Page 5: Operation
9. To Zero the meter display, press and hold the ZERO button until the second beep. Warning! Do not touch the air velocity or temperature thermistors inside the sensor head while moving the sensor cover. Model 407119A Version 5.0 October 2005... - Page 6 CFM or CMM. If the CFM or CMM reading exceeds 99999, use the displayed X10 multiplier to calculate the reading. 10. To turn the meter off, press and hold the POWER button until the meter switches off. Model 407119A Version 5.0 October 2005...
- Page 7 To temporarily disable this feature (until the meter’s power is cycled), press the REC button and enter the RECORD mode. Alternatively, go to the advanced programming section (later in this manual) for instructions on how to disable it long term. Model 407119A Version 5.0 October 2005...
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Page 8: System Reset
1. Move the probe lock switch from the ON to the OFF to the ON position again. Turn the meter on. 2. While powering the meter, press the RESET switch (side compartment) using the point of a paper clip. Model 407119A Version 5.0 October 2005... - Page 9 PC Interface The 407119A is equipped with a 3.5mm jack (side compartment) for connection to a PC for data acquisition purposes. The meter’s data output is a 16 bit data stream. To obtain PC interface cabling and Windows data acquisition software, contact Extech Instruments.
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Page 10: Battery Replacement
For the latest version of this User’s Guide, Software updates, and other up-to-the-minute product information, visit our website: www.extech.com Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451 Copyright © 2005 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form. - Page 11 Unit of Measure Conversion Table ft/min knots km/h 1 m/s 196.87 1.944 2.24 1 ft/min 0.00508 0.00987 0.01829 0.01138 1 knot 0.5144 101.27 1.8519 1.1523 1 km/h 0.2778 54.69 0.54 0.6222 1 MPH 0.4464 87.89 0.8679 1.6071 Model 407119A Version 5.0 October 2005...
- Page 12 Model 407119A Version 5.0 October 2005...