Model 407412 Version 2.1 July 2006
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 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. 210 for authorization or visit our website 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 Extech's Hygro Thermo-Anemometer. This Heavy
Duty meter measures and displays Air Ve Temperature and Relative Hu
Temperature. Air flow can be displayed in the following units of measure: feet per minute,
meters per second, miles per hour, kilometers per hour, and knots. Temperature and RH
units are displayed in
o
C/
o
F and % units respectively. This meter is shipped fully tested and
calibrated and, with proper use, will provide years of reliable service.
Specifications
General Specifications
Display
Dual function, 4-digit (9999 count) LCD display
Units of measure
m/s (meters per second), km/hr (kilometers per hour), ft/min (feet per
minute), knots (nautical miles per hour), mile/hr (miles per hour);
Temperature: °C/°F; Humidity: %RH
Data hold
Holds reading on the LCD display when button is pressed
Sensors
Air velocity sensor: Twisted vane arm with low friction ball bearing;
Temperature: Precision thermistor; Humidity: Thin film capacitor
Max/Min Record
Records highest and lowest readings for later recall
Data Output
RS-232 serial PC interface
Operating Temp.
32°F to 122°F (0°C to 50°C)
Operating Humidity
Max. 80% RH
Power Supply
9V battery
Power Consumption
Approx. 8.3 mA DC
Weight
0.77 lbs. (350g)
Dimensions
Meter: 7.1x2.8x1.3" (180 x 72 x 32mm);
Anemometer Probe: 0.7" (17mm) Diameter x 6.7" (170mm)
Accessories
Anemometer/temperature and RH Probes, 9V battery, & case
