User Manual

Model 407113 Version 1.6 October 2005
2
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
[phone] 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 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