User Guide Heavy Duty CFM Thermo-Anemometer Model 407113 3
Introduction Congratulations on your purchase of the Extech 407113 CFM meter. This handheld meter can display Air Flow (CFM) with Area or Air Velocity with Temperature on a 10,000-count (0 to 9999) dual display LCD. Other functions include MIN/MAX Record/Recall, RS-232 PC interface, and Data Hold. The metal vane sensor offers rugged durability and higher temperature withstand than comparable devices. Careful use of this meter will provide years of reliable service.
Range Specifications Air Velocity Measurements Range Resolution Accuracy (%rdg) 0.50 - 35.0 m/s 0.01 m/s<10 0.1 m/s >10 ± (2% + 0.2m/s) km/h (kilometers per hour) 1.8 – 126.0 km/h 0.1 km/h ± (2% + 0.8km/h) ft/min (feet per minute) 100 – 6890 ft/min 1 ft/min ± (2% + 40ft/min) mph (miles per hour) 1.1 – 78.3 mph 0.1 mph ± (2% + 0.4m/h) knots (nautical miles per hour ) 1.0 to 68 knots 0.1 knots ± (2% + 0.4knots) Range Resolution Area 3 0.
Meter Description 1. Sensor Input 2. RS-232 PC Interface jack 3. LCD Display 4. Vane 5. Rubber Holster 6. Keypad 7. Battery compartment (rear) 3 Note: To access the rear battery compartment, first remove the rubber holster that jackets the meter. 4 407113-EN v3.
Operation Air Velocity Measurements 1. Connect the sensor to the sensor input jack on top of the meter. 2. Turn on the meter using the Power button. 3. Select the VELOCITY function using the FLOW / VELOCITY button. The LCD will display VEL when the velocity mode is selected. 4. Select the desired temperature units using the C/F select button. The LCD will reflect the current unit selection. 5. Select the desired air velocity units using the UNIT button. The LCD will reflect the current unit selection. 6.
Air Flow (Volume) Measurements (CMM / CFM) 1. Connect the sensor to the sensor input jack on top of the meter. 2. Turn on the meter using the POWER button. 3. Select the FLOW mode using the FLOW/VELOCITY button. The LCD will display FLOW CFM or FLOW CMM when the flow function has been selected. 4. Select the desired air flow units: CMM (cubic meters per minute) or CFM (cubic feet per minute) using the UNIT button. The LCD will reflect the selection. 5.
Battery Replacement When the LBT icon appears on the LCD, the 9V battery must be replaced. 1. Remove the rubber holster that surrounds the entire meter 2. Slide off the rear battery compartment 3. Replace the 9V battery 4. Affix the battery compartment cover and the meter holster Useful Equations and Conversions Area equation for rectangular or square ducts Height (H) Area (A) = Width (W) x Height (H) Width (W) Area equation for circular ducts Area (A) = pi x r2 Where pi = 3.
Warranty FLIR Systems, Inc. warrants this Extech Instruments brand device 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 for authorization. Visit the website www.extech.com for contact information.
