407113-EN v3.6 4/14
2
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.
Specifications
General Specifications
Display
Dual Display Multi-function 10,000-count (0 to 9999) LCD
Measurements
Air Velocity: m/s, km/h, ft/min, knots, mph;
Air Flow: CMM (m
3
/min) and CFM (ft
3
/min); Temperature: °C and °F
Data Hold
Freezes displayed reading
Sampling rate
One (1) reading per second
Sensors
Air velocity/flow sensor: Metal angled vane arms with low-friction ball
bearing. Temp. Sensor: Precision thermistor
MIN/MAX
Records/Recalls lowest and highest readings
Auto Power OFF
Automatic shut off after 15 minutes
PC Interface
RS-232 Serial Communications (16-bit data stream)
Over range indication
1___
appears on the LCD
Low battery indication
LBT
appears on the LCD
Power supply
9V Battery (consumption 8.3mA approx.)
Operating conditions
Meter: 32 to 122
o
F (0 to 50
o
C); 80% RH max.
Sensor: 32 to 175
o
F (0 to 80
o
C)
Dimensions / Weight
Main instrument: 7.1 x 2.8 x1.3" (180 x 72 x 32mm)
Sensor head: 2.8 (72mm) diameter
Weight
0.84 lbs. (381g) for meter and sensor
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