background image

Model 451126 V2.0  6/08 

Specifications 

Display 

Dual 4-digit (9999 count) Multi-function LCD 

Data hold 

Locks latest reading on the LCD display 

Sensor Structure 

Air velocity sensor: Conventional twisted vane arm with low friction 
(sapphire) ball bearing.  Temperature sensor: K-type thermocouple 
built into vane. 1/4" mounting nut provided 

Memory Recall 

Records Max/Min readings with push-key RECALL 

Data Output 

RS-232 PC serial interface 

Operating conditions 
(Meter) 

Temperature: 32°F to 122°F (0°C to 50°C); Humidity: <80% RH; 

Pressure: 500mB to 2 Bar 

Operating conditions 
(Vane) 

Temperature: 32°F to 140°F (0°C to 60°C); Humidity: <80% RH; 
Pressure: 500mB to 2 Bar 

Storage temperature  Temperature: -40°F to 140°F (-40°C to 60°C) 

Power Supply 

9V battery; Battery life: 50 hours typical 

Power Consumption 

Approx. 3 mA DC 

Weight 

0.77 lbs. (350g) 

Dimensions 

Meter: 3.46 x 6.61 x 1.03" (88 x 168 x 26.2mm); 

Vane: 2.6 x 5.22 x 1.15" (66 x 132 x 29.2mm) 

Accessories 

9V battery and carrying case 

Range Specifications 

Air Velocity

 

 

Measurement

 

 

Calibrated Range

 

 Display 

Resolution

 

Accuracy 

(%FS)

 

Feet per Minute (ft/min) 

60.0 to 8800 

0.1 

± (3% + 20 ft/min) 

Meters per Second (m/s) 

0.30 to 45.00  

 0.01 

± (3% + 0.1 m/s) 

Kilometers per Hour (km/hr) 

1.00 to 140.0 

0.01 

± (3% + 0.4 km/hr) 

Miles per Hour (mile/hr) 

0.70 to 100.0  

0.01 

± (3% + 0.2 mile/hr)

Knots 

0.60 - 88.0 

0.01 

± (3% + 0.2 knots) 

 

Temperature

 

Units

 

Range

 

Converter Resolution

 

Accuracy

 

o

C 0.0

o

C to 45.0

o

C 0.2

o

C ±1.0

o

o

F 32.0

o

F to 113.0

o

F 0.4

o

F ±1.8

o

 

Air Flow and Area 

 

(CMM: 0 to 45.00 m/s; CFM: 0 to 8800 ft/min) 

 

Range

 

Resolution

 

Area

 

CFM (ft

3

/min) 

0 to 999900 

0.001 to 100 

0.001 to 9999 

CMM (m

3

/min) 

0 to 999900 

0.001 to 100 

0.001 to 9999 

 

Summary of Contents for 451126

Page 1: ...ype 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 displayed in o C or o F units The mete...

Page 2: ...Supply 9V battery Battery life 50 hours typical Power Consumption Approx 3 mA DC Weight 0 77 lbs 350g Dimensions Meter 3 46 x 6 61 x 1 03 88 x 168 x 26 2mm Vane 2 6 x 5 22 x 1 15 66 x 132 x 29 2mm Acc...

Page 3: ...is displayed in degrees Fahrenheit 2 3V 2 3V Maximum mode is selected CFM Cubic feet per minute ft 3 min MAX Maximum reading mode is selected CMM Cubic meters per minute m 3 min VEL Air Velocity measu...

Page 4: ...y being measured by the vane s built in type K thermocouple 2 Press to select C or F Temperature is displayed on the upper line of the LCD Air Flow 1 Power the meter by pressing 2 Press to select airf...

Page 5: ...4 The previously stored area value will be displayed on the upper LCD display line To enter a new area value press The lower display line will blank waiting for the user to program new data Use the nu...

Page 6: ...the LCD indicating that the datalogging mode is activated 5 The maximum number of readings that can be stored is 2000 6 To stop datalogging press again The datalogger will automatically stop recordin...

Page 7: ...4 x 768 pixels 451126 Anemometer Operating System Compatibility Windows TM 95 98 NT 2000 XP VISTA Hardware Connection The meter connects to a PC with the supplied DB 9 to DB 9 interface cable The mete...

Page 8: ...le go to Windows Device Manager Ports It is here the COM PORTS will be listed If using the meter with a Serial to USB Adaptor make sure you install the driver that is supplied with the 3 rd party adap...

Page 9: ...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 1 152...

Page 10: ...ore 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 resulti...

Reviews: