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User Manual
User's Guide
Vane Thermo-Anemometer Datalogger
Model 451126
Introduction
Congratulations on your purchase of Extech's Thermo-Anemometer Datalogger. This
Vane-type Anemometer can indicate Air Velocity in five units of measure: Feet per minute,
Meters per second, Miles per hour, Kilometers per hour, and Knots with Temperature
o
o
displayed in
C or
F units. The meter can also display air flow in CFM or CMM. The built-in
datalogger can record up to 2000 readings and the RS-232 interface provides PC data
transfer capability.
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Summary of Contents for Extech Instruments 451126
- Page 1 User's Guide Vane Thermo-Anemometer Datalogger Model 451126 Introduction Congratulations on your purchase of Extech's Thermo-Anemometer Datalogger. This Vane-type Anemometer can indicate Air Velocity in five units of measure: Feet per minute, Meters per second, Miles per hour, Kilometers per hour, and Knots with Temperature...
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Page 2: Specifications
(CMM: 0 to 45.00 m/s; CFM: 0 to 8800 ft/min) Range Resolution Area CFM (ft /min) 0 to 999900 0.001 to 100 0.001 to 9999 CMM (m /min) 0 to 999900 0.001 to 100 0.001 to 9999 Model 451126 V2.0 6/08... -
Page 3: Meter Description
READ Recalling stored Multiply reading by ten measurements Appears when Meters per second recording readings RS-232 PC Interface is ft/min Feet per minute activated Square feet Miles per hour Square meters Km/h Kilometers per hour Model 451126 V2.0 6/08... -
Page 4: Operation
Place the vane in the air flow (Fig.2). Wait approximately 2 seconds for a stabilized Air Flow reading. The equation below is used to calculate Air Flow: AIR FLOW = (AIR VELOCITY) x (AREA) Model 451126 V2.0 6/08... - Page 5 MAX mode. The meter will only display the highest reading. 2. Press again to enter the MIN. The meter will only display the lowest reading. 3. Press to exit the MAX or the MIN mode. Model 451126 V2.0 6/08...
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Page 6: Data Logging
3. Press again and the desired data will be displayed. 4. Press to return to normal operation. Clearing Datalog Memory Press and hold while powering up the meter to clear the meter's datalog memory. Model 451126 V2.0 6/08... - Page 7 Software Requirements and Installation The 451126 software lets the user: • Download logged recordings from the meter’s memory • Record to the PC • Graphically display readings from the meter System Requirements Hardware Requirements: PC recommended with processor of Pentium III 600MHz or above.
- Page 8 Manager>Ports and make sure that the brand name of the Serial to USB Adaptor is listed here. Note what COM PORT it has assigned. Make sure that in the 451126 Software you select the COM PORT it is assigned to in order to establish communication.
- Page 9 ) x 60 Units Conversion Table ft/min knots km/hr 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/hr 0.2778 54.69 0.54 0.6222 1 mph 0.4464 87.89 0.8679 1.6071 Model 451126 V2.0 6/08...
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Page 10: Warranty
Fasten the compartment screw Warranty EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) 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.
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