User's Manual
Heavy Duty Mini Vane
CFM Thermo Anemometer
Model 407117
WARRANTY
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects
in parts and workmanship for three years 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 (781) 890-7440 for authorization. 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 407117 Heavy Duty Mini Vane CFM
Thermo Anemometer. This meter uses a telescoping antenna sensor to measure Air
Velocity, Air Flow and Temperature. An RS-232 PC interface provides data acquisition
functionality. Proper use of this meter will provide years of reliable service.
Support line (781) 890-7440
Technical support: Extension 200; E-mail: support@extech.com
Repair & Returns: Extension 210; E-mail: repair@extech.com
Product specifications subject to change without notice
For the latest version of this User’s Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451
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Model 407117
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Version 2.1
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November 2005
Specifications
Circuit
Display
Measurement units
Data hold
Sampling rate
Sensors
MAX/MIN Memory
Automatic Power off
Data Output
Custom LSI microprocessor circuit
Dual function 0.5" (13 mm) 4-digit LCD
Air Velocity: m/s, km/h, ft/min, knots, mph;
Air Flow: CMM (m /min) and CFM (ft /min);Temp: °C and °F
Freezes displayed reading
1 second approx.
Air velocity/flow sensor: Low friction, ball-bearing vane;
Temp. sensor: Precision thermistor
Record and Recall Maximum and Minimum readings
Auto shut off after 15 minutes to preserve battery life
RS 232 PC serial interface with 16-bit data stream output
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Operating Temperature Meter: 32 to 122°F (0 to 50°C); Sensor: 32 to 176°F (0 to 80°C)
Operating Humidity
Power Supply
Power Current
Weight
Dimensions
Max. 80% RH
9V battery (Heavy duty alkaline); optional AC adapter
Approx. DC 8.3 mA
1.6 lbs. (700 g) including battery & probe
Main instrument: 7 x 2.9 x1.3" (178 x 74 x 33mm)
Telescoping Sensor: 0.5" diameter head;
23.6" (600mm) max antenna length with 39" (1m) cable
Air Velocity Measurements
m/s (meters per sec)
km/h (kilometers per hour)
ft/min (feet per minute)
mph (miles per hour)
knots (nautical miles per hour )
Air Flow Measurements
CMM (cubic meters per minute)
CFM (cubic feet per minute)
Air Temperature
Range
0.80 – 12.00 m/s
2.8 – 43.2 km/h
160 – 2358 ft/min
1.8 – 26.8 mph
1.6 to 23.3 knots
Range
0-999,900 m /min
0-999,900 ft /min
Range
32 - 176 F (0 - 80 C)
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Resolution
0.01 m/s
0.1 km/h
1 ft/min
0.1 mph
0.1 knots
Resolution
0.001 to 100
0.001 to 100
Resolution
0.1 F/C
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Accuracy %rdg
± (2% + 0.2 m/s)
± (2% + 0.8 km/h)
± (2% + 40 ft/m)
± (2% + 0.4 mph)
± (2% + 0.4 knots)
Area
0 to 9,999m
0 to 9,999ft
Accuracy
1.5 F (0.8 C)
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Model 407117
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Version 2.1
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November 2005
Meter Description
1.
2.
3.
4.
5.
6.
7.
LCD Display
Keypad
Rubber protective holster
Battery compartment (rear)
RS-232 PC Interface jack
Sensor input plug
Telescoping antenna sensor
Note: To access the rear battery compartment
remove the meter's rubber protective holster.
Meter 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 VEL/FLOW 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. Open the antenna to the desired length.
7. Place the sensor in the air current to be measured. Have the air flow meet the
sensor head in the direction of the word IN printed on the sensor head.
8. View the air velocity and temperature readings on the LCD Display. The large main
LCD display shows the Air Velocity reading. The lower LCD sub-display shows the
temperature reading.
Data Hold Feature
1. While taking measurements, press the HOLD button to freeze the LCD reading for
later viewing.
2. The DH indicator will appear on the LCD when the display is in Data Hold mode.
3. Press HOLD again to return to normal operation.
Maximum and Minimum Recording
The 407117 allows the user to record and view the highest (MAX) and lowest (MIN)
readings.
1. Press the RECORD/RECALL button once. The REC indicator will appear on the
display and the meter will begin keeping track of the MAX and MIN values.
2. To view the MAX reading, press RECORD/RECALL again. The MAX indicator along
with the maximum reading will appear on the LCD display.
3. Press RECORD/RECALL again to view the minimum value, the MIN indicator along
with the minimum reading will appear on the LCD display.
4. To return to normal operation, press and hold the RECORD/RECALL button for
approx. 3 seconds. The display indicators REC, MAX, and MIN will disappear.
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Model 407117
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Version 2.1
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November 2005
Auto Power Off
To save battery life, the meter will automatically shut off after approximately 15 minutes of
operation. To disable this feature, press the RECORD/RECALL button and enter the
RECORD mode.
Air Flow 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 VEL/FLOW button. The LCD will display FLOW when
the flow function has been properly 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.
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5. Press the SAMPLE AREA button to begin entering the area in m or ft . Use the
button to increment the flashing digit, use the button to decrement the flashing digit,
use the button to select the next digit, and use the MAX/MIN button to set the
decimal point. Press the ENTER/RESET button when the area has been entered. The
bottom display (normally used for the temperature display) will indicate the area
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entered in ft or m . The main LCD displays the air flow in CFM (cubic feet per minute)
or CMM (cubic meters per minute). If the CFM or CMM reading exceeds 9999, use the
displayed X10 or X100 multiplier to calculate the reading.
6. For air flow measurements, three modes apply: The normal, default mode, where the
actual flow is indicated, and the two modes described below: Press the FLOW/MODE
button to select one of the two modes listed below:
2/3V MAX MODE:
LCD displays 2/3 the measured value.
AVG MODE:
Up to 20 readings can be taken separately and averaged. Select the
AVG mode via the FLOW/MODE button and then press the AVG/START button to
take a reading. Up to 20 readings can be taken and averaged. The lower LCD
display provides a 1 to 20 counter that increments each time a reading is taken.
The main LCD displays the averaged air flow.
7. Note that the temperature function is not active in the AIR FLOW mode.
RS-232 PC Interface
The 407117 is equipped with a 3.5mm phone jack (meter top) for connection to a PC for
TM
data acquisition purposes. To obtain PC interface cabling and Windows data acquisition
software, contact Extech Instruments. Instructions for use are provided with the optional
data acquisition software/hardware kits.
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
Calibration and Repair Services
Extech offers repair and calibration services for the products we sell. Extech also provides
NIST certification for most products. Call the Customer Service Department for information
on calibration services available for this product. Extech recommends that annual
calibrations be performed to verify meter performance and accuracy.
Copyright
©
2005 Extech Instruments Corporation.
All rights reserved including the right of reproduction in whole or in part in any form.
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Model 407117
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Version 2.1
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November 2005
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