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Model 407114 Version 2.0 November 2005 

 

Support line (781) 890-7440 

Technical support: Extension 200; E-mail: [email protected] 

Repair & Returns: Extension 210; E-mail: [email protected] 

Product specifications subject to change without notice

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 

Warranty 

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects 
in parts and workmanship for one year from date of shipment (a six month limited warranty 
applies to sensors and cables). If it should become necessary to return the instrument for 
service during or beyond the warranty period, contact the Customer Service Department at 
(781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact 
information. A Return Authorization (RA) number must be issued before any product is 
returned to Extech. The sender is responsible for shipping charges, freight, insurance and 
proper packaging to prevent damage in transit. This warranty does not apply to defects 
resulting from action of the user such as misuse, improper wiring, operation outside of 
specification, improper maintenance or repair, or unauthorized modification. Extech 
specifically disclaims any implied warranties or merchantability or fitness for a specific 
purpose and will not be liable for any direct, indirect, incidental or consequential damages. 
Extech's total liability is limited to repair or replacement of the product. The warranty set 
forth above is inclusive and no other warranty, whether written or oral, is expressed or 
implied. 

 

 

Calibration and Repair Services 

Extech offers repair and calibration services

 for the products we sell. Extech also 

provides NIST certification for most products. Call the Customer Service Department for 
information on calibration services available for this product. Extech recommends that 
annual calibrations be performed to verify meter performance and accuracy. 
 

 

 

 
 
 
 
 
 
 
 
 
 

Copyright 

©

 2005 Extech Instruments Corporation 

All rights reserved including the right of reproduction in whole or in part in any form. 

 

Summary of Contents for 407114

Page 1: ...User s Manual CFM Thermo Anemometer Air Velocity Air Flow and Temperature Model 407114 ...

Page 2: ...atulations on your purchase of the Extech CFM Thermo Anemometer This instrument measures Air Velocity Air Flow volume and Temperature The RS 232 PC interface provides data acquisition functionality Proper use of this meter will provide years of reliable service ...

Page 3: ...it data stream Operating Temperature 32 F to 122 F 0 C to 50 C Operating Humidity Max 80 RH Power Supply 9V battery Power Current Approx 8 3 mA DC Weight 0 84 lbs 381g including battery probe Dimensions Main instrument 7 1 x 2 8 x1 3 180 x 72 x 32mm Sensor Head 72mm Diameter Range Specifications Air Velocity Range Resolution Accuracy rdg m s meters per sec 0 40 25 00 m s 0 01 m s 2 0 2 m s km h ki...

Page 4: ... this manual for more details This button also functions as the DECIMAL point when programming UNIT Press to select the unit of measure for Air Velocity This button also functions as the DOWN ARROW button when programming FLOW VELOCITY Press to select the mode of operation In FLOW mode the meter displays air volume In VELOCITY mode the meter displays air speed RIGHT Arrow button Used when programm...

Page 5: ... display shows the temperature reading Data Hold Feature 1 While taking measurements press the HOLD button to freeze the LCD reading for later viewing 2 The DH indicator will appear on the LCD when the display is in Data Hold mode 3 Press HOLD again to return to normal operation Maximum and Minimum Recording The 407114 allows the user to record and view the highest MAX and lowest MIN readings 1 Pr...

Page 6: ...button to select one of the two modes listed below 2 3V MAX MODE LCD displays 2 3 the measured value AVG MODE Up to 20 readings can be taken separately and averaged Select the AVG mode via the FLOW MODE button and then press the AVG START button to take a reading Up to 20 readings can be taken and averaged The lower LCD display provides a 1 to 20 counter and each time a reading is taken the counte...

Page 7: ...e sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for ...

Page 8: ...using the above formulae Unit of Measure Conversion Table m s ft min knots km h MPH 1 m s 1 196 87 1 944 3 6 2 24 1 ft min 0 00508 1 0 00987 0 01829 0 01138 1 knot 0 5144 101 27 1 1 8519 1 1523 1 km h 0 2778 54 69 0 54 1 0 6222 1 MPH 0 4464 87 89 0 8679 1 6071 1 Width W Height H Area A Width W x Height H CFM ft3 min Air Velocity ft min x Area ft2 CMM m3 min Air Velocity m sec x Area m2 x 60 Radius...

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