Model 451104 V2.0V 10/06
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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 on 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 at
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.
Introduction
Congratulations on your purchase of the Extech 451104 Vane Thermo-Anemometer.
This device measures air velocity and temperature, displaying both simultaneously. The
measurement vane is built into the meter for ease of use.
This meter stores the highest (MAX), lowest (MIN), and average (AVG) readings for easy
recall. The built-in RS-232 PC Interface jack can be used to capture readings on a PC as
they are taken using the optional Model 407752 interface kit. This meter is shipped fully
tested and calibrated and, with proper use, will provide years of reliable service
Meter Description
1. Air velocity sensor with built-in Temperature
sensor
2. Data Hold button
3. Min/Max/Avg Record button
4. Unit of measure button
5. ON-OFF power button
6. Set-up key (used for programming as described
in this manual)
7. LCD air velocity display
8. LCD temperature display
9. RS-232
PC
port
Note that the battery compartment is located on the back of the meter
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