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Model 407123   V5.2   2/2006 

 

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 

©

 2006 Extech Instruments Corporation 

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

 
 
 

Содержание 407123

Страница 1: ... by placing the sensor into an airway such as a duct or a vent The sensor is situated at the end of the telescoping wand for convenience and has a protective cover that slides up and down The meter includes an RS 232 PC Interface jack for use with the Model 407001 Data Acquisition software and interface cable kit Careful use of this meter will provide years of reliable service ...

Страница 2: ...t Operating Temperature 32 to 122 F 0 to 50 C Operating Humidity Max 80 RH Power Supply Six 6 1 5V AAA batteries Power Consumption Approx 30 mADC Weight 0 78 lb 355 g including batteries probe Dimensions Main instrument 7 1 x 2 8 x 1 3 180 x 72 x 32 mm Sensor 0 5 12mm diameter Telescope 7 2 1m maximum length with cable Range Specifications Units Range Resolution Accuracy m s 0 2 to 20 0 m s 0 1 m ...

Страница 3: ...sensor cover must be closed 3 Protective holster Rubber jacket that surrounds the meter must be removed to access battery compartment 4 Battery compartment Located on the lower back of the meter 5 PC Interface jack Accepts a 3 5mm plug from a PC interface cable cable and data acquisition software available using part number 407001 6 Sensor input jack Insert the sensor plug 7 Sensor opening Air mus...

Страница 4: ...will reflect the selection 4 Select the desired air velocity units using the UNIT button The LCD will reflect the selection 5 Place the sensor cover in the UP ZERO position 6 Place the sensor in the area to be measured and allow a short time for the sensor to reach the temperature of the air under test 7 Press the ZERO button to zero the meter Taking Measurements 1 Zero the meter as described abov...

Страница 5: ... Maximum reading encountered since the RECORD button was pressed The MAX display icon will appear along with the maximum reading 4 Press RECALL again to view the minimum reading MIN 5 Press the RECORD button to exit this mode and return to normal operation Data Hold To freeze the LCD display press the HOLD button The DH display icon will appear on the LCD Press the HOLD button again to return to n...

Страница 6: ... a flat head screwdriver or a coin 3 Replace the six AAA 1 5V batteries observing polarity 4 Replace the battery compartment cover and the protective holster PC Interface The meter is equipped with an RS 232 PC Interface jack at the top of the meter next to the sensor input jack This port is for use with the Extech Part Number 407001 Data Acquisition software and interface cable kit Directions for...

Страница 7: ...asured linear velocity i e feet per minute This gives ft min x ft 2 ft 3 min CFM Cubic equations CFM ft 3 min Air Velocity ft min x Area ft 2 CMM m 3 min Air Velocity m sec x Area m 2 x 60 Units Conversion Table m s ft min knots km hr 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 hr 0 2778 54 69 0 54 1 0 6222 1 MPH 0 4464 87 ...

Страница 8: ...r 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 speci...

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