AN100 [EXTECH]

CFM/CMM Thermo Anemometer; CFM / CMM热风速计


型号：	AN100
厂家：	EXTECH INSTRUMENTS CORPORATION.
描述：	CFM/CMM Thermo Anemometer CFM / CMM热风速计
文件：	总9页 (文件大小：236K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

User's Manual

CFM/CMM Thermo Anemometer

Model AN100

CFM/CMM

Thermo-Anemometer

AN100

Introduction

Congratulations on your purchase of the Extech AN100 CFM/CMM Thermo

Anemometer. This instrument measures Air Velocity, Air Flow (volume) and

Temperature. The large, easy-to-read backlit LCD includes primary and secondary

displays plus numerous status indicators. The meter is shipped fully tested and

calibrated and with proper use will provide years of reliable service.

Meter Description

1. LCD Display

2. Vane

3. Rubber Boot

4. Meter

5. Power On/Off

6. Area

7. AVG

8. Backlight

9. Temperature Buttons

10. Airflow/Velocity Buttons

Keypad

•

AUTO POWER OFF

Press to turn the meter ON or OFF

MAX/MIN Used to record and store the highest, lowest and average airflow or

velocity readings.

◄ (LEFT) also serves as change decimal point button in AREA mode

•

UNITS Press to select the mode of operation. In FLOW mode, the meter displays

air volume. In VELOCITY mode, the meter displays air speed.

▲(UP) also serves as increase number button in AREA mode.

•

AVG Used to Average multiple readings in FLOW or VELOCITY mode. Up to 20

readings can be averaged.

HOLD Press to freeze the displayed reading. Press again to unlock display. This

button also functions as the ►RIGHT scroll button in AREA mode and RECALL

mode.

•

AREA Press and hold to manually enter the area of a duct in CFM or CMM mode

NEXT In AREA mode, used to select memory locations 1-8.

Press to turn the backlight on/off

MAX/MIN (Temperature) Used to record and store the highest, lowest readings for

air temperature.

•

°C °F HOLD (Temperature) Press to freeze the displayed temperature reading.

Press again to unlock the display. Press and hold for 3 seconds to switch between

°C and °F. Meter will beep twice to indicate change.

Battery compartment located on the back of the instrument. The rubber protective jacket

must be removed from the meter to access the compartment.

Model AN100 Version 2.0 02/06

Display Layout

•

MAX (top of LCD): Max Hold function engaged for the Air Temperature function

HOLD (top of LCD): Data Hold function engaged for the Air Temperature function

VEL: indicates that meter is in air velocity mode

FLOW: indicates that meter is in air flow mode

MAX (bottom of LCD): Max Hold for the IR Temperature and RH function

HOLD (bottom of LCD): Data Hold for the IR Temperature function and RH function

^oC / ^oF: Temperature units of measure

CFM/CMM: airflow units of measure

Ft², m²: units for area dimensions

m/s, ft/min, km/h, MPH, knots: air velocity units of measure

X10, X100: multipliers for air flow readings

AVG: air averaging mode

RECORD: indicates that min/max function is running (top for temp, bottom for air)

Large LCD digits at center of display for Relative Humidity and IR Temperature

Smaller LCD digits at top, right of display for Probe Temperature

: Low battery indicator

Model AN100 Version 2.0 02/06

Operation

Connecting the Vane

1. The vane plug is inserted in the meter’s sensor jack at the top of the meter. The plug

and jack are keyed so that the plug can only fit in the jack one way.

2. Turn the plug carefully until it lines up with the jack and then firmly push the plug in

place. Do not apply undue force or try to twist the plug side-to-side.

3. If the vane is not connected to the meter or if the sensor is defective, the LCD display

will indicate OL in place of a Temperature reading.

Air Velocity Measurements (Single Point)

Side view of Vane

1. Turn on the meter using the ON/OFF

button.

2. Press UNITS button to select the desired unit of

measure. NOTE: At power up the meter will

display the last unit of measure previously

entered.

Arrow

airflow

3. Place the sensor in the air stream. Ensure that

the air enters the vane as indicated by the arrow

sticker placed inside the vane.

4. View the readings on the LCD Display. The

large main LCD display shows the Air Velocity

reading. The upper right LCD sub-display shows

the temperature reading.

Air Velocity Averaging Mode

1. To enter 20 Point Averaging Mode, press and hold the AVG button until it beeps twice.

The AVG icon will be displayed.

2. Take a measurement and press the AVG button. A single beep will sound and the

HOLD icon will appear in the display.

3. The average reading will be displayed and number of readings measured will appear in

the upper right hand corner of the display. After 5 seconds, the display will return to the

current reading.

4. Repeat steps 2 - 3 until the desired number of points have been measured.

5. To return to standard velocity measuring mode press and hold AVG button until meter

beeps twice.

Note: In the standard velocity measuring mode, press the AVG button once to recall the

previous average. The average will be cleared when you enter the Averaging Mode

again.

Model AN100 Version 2.0 02/06

Air Flow Measurements (CMM / CFM)

1. Turn on the meter using the

ON/OFF button

Side view of Vane

2. Press the UNITS button to select the desired air flow

units: CMM (cubic meters per minute) or CFM (cubic

feet per minute). NOTE: At power up the meter will

display the last unit of measure previously entered.

Arrow

3. To begin entering the area in m²or ft², press and

hold the AREA button until it beeps twice. The

airflo

leftmost digit of the bottom display will begin to flash.

4. Use the ▲ (UP) button to change the flashing digit

Use the ◄ (LEFT) button to move the decimal

Use ► (RIGHT) button to select the other digits.

After all of the digits are entered, press and hold the

AREA button (until meter beeps twice) to save the area into memory and return to

CFM or CMM measuring mode.

5. Place the sensor in the air stream. Ensure that the air enters the vane as indicated by

the arrow sticker placed inside the vane. Refer to the diagram. The large main LCD

display shows the Air Velocity reading. The upper right LCD sub-display shows the

temperature reading.

The meter has 16 memory locations (8 for CFM and 8 for CMM) that can be used to store

commonly used area sizes that you can recall at anytime.

1. Press the AREA button until meter beeps twice. A memory location number will

appear in the top right of the display indicating the memory location.

2. Push the NEXT button to scroll thru and select the desired location. Once you have

selected the desired memory location enter your dimension

Use the ▲ (UP) button to change the flashing digit

Use the ◄ (LEFT) button to move the decimal

Use ► (RIGHT) button to select the other digits. After all of the digits are entered,

press and hold the AREA button (until it beeps twice) to save the area into memory

and return to CFM or CMM measuring mode.

To select and use a previously stored dimension, press and hold the AREA button until it

beeps twice.

Press NEXT to scroll thru the 8 memory locations. Press and hold the AREA button until it

beeps twice to return to CFM or CMM measuring mode.

Air Flow Averaging Mode

1. To enter 20 Point Averaging Mode, press and hold the AVG button until it beeps twice.

The AVG icon will be displayed.

2. Take a measurement and press the AVG button. A single beep will sound and the

HOLD icon will appear in the display.

3. The average reading will be displayed and number of readings measured will appear in

the upper right hand corner of the display. After 5 seconds, the display will return to the

current reading.

4. Repeat steps 2 - 3 until the desired number of points have been measured.

5. To return to standard airflow measuring mode press and hold AVG button until meter

beeps twice.

Note: In the standard velocity measuring mode, press the AVG button once to recall the

previous average. The average will be cleared when you enter the Averaging Mode

again.

Model AN100 Version 2.0 02/06

Data Hold (Air Velocity/Air Flow)

1. While taking measurements, press the HOLD button to freeze the air velocity/air flow

reading.

2. The HOLD indicator will appear in the bottom of the LCD display.

3. Press HOLD again to return to normal operation.

MAX/MIN/AVG Record (Air Velocity/Air Flow)

This allows the user to record and view the highest (MAX), lowest (MIN) and average

(AVG) readings.

1. Press the button MAX/MIN button. The MAX indicator and RECORD indicator along

with the Max reading will appear on the LCD display and the meter will begin keeping

track of the MAX, MIN and Average values.

2. Press the MAX/MIN button again to view the minimum reading. The MIN indicator

along with the minimum reading will appear on the LCD display.

3. Press the MAX/MIN button again to view the average reading. The AVG indicator

along with the average reading will appear on the LCD display.

4. Press the MAX/MIN button again to display current readings. NOTE: the meter will

keep recording MAX/MIN/AVG readings.

5. To clear and stop MAX/MIN/AVG recording and return to normal operation, press and

hold the MAX/MIN button until the meter beeps twice.

Automatic Power OFF

To conserve battery life, the meter automatically turns off after 20 minutes. To defeat this

feature:

1. Turn the meter OFF.

2. Press and hold the

(Backlight) key while turning the meter ON.

3. “dis APO” will appear in the display. The AUTO POWER OFF feature will now be

disabled.

4. Note that AUTO POWER OFF is re-enabled each time the meter is turned on.

5. Also note that AUTO POWER OFF is disabled in CFM/CMM or Average mode.

Battery Replacement

When

appears on the LCD, the 9V battery must be replaced.

1. Disconnect the sensor.

2. Remove the meter’s rubber protective jacket

3. Use a Phillips screwdriver to open the rear battery compartment

4. Replace the 9V battery

5. Close the battery compartment and replace the meter’s protective jacket

Model AN100 Version 2.0 02/06

Specifications

Air Velocity

Range

0.40 - 30.00 m/s

1.4 - 108.0 km/h

80 – 5900 ft/min

0.9 – 67.0 mph

0.8 to 58.0 knots

Range

0-9999 m³/min

0-9999 ft³/min

Range

Resolution

0.01 m/s

0.1 km/h

1 ft/min

0.1 mph

0.1 knots

Resolution

Accuracy

± (3% + 0.20 m/s)

± (3% + 0.8 km/hr)

± (3% + 40 ft/m)

± (3% + 0.4 MPH)

± (3% + 0.4 knots)

Area

m/s (meters per sec)

km/h (kilometers/hour)

ft/min (feet per minute)

mph (miles per hour)

knots (nautical MPH)

Air Flow

CMM (cubic meters/min)

CFM (cubic ft/min)

Air Temperature

0 to 9.999m²

0 to 9.999ft²

Resolution

0.1^oF/C

Accuracy

4.0^oF (2.0^oC)

14 - 140^oF (-10 - 60^oC)

Circuit

Custom LSI microprocessor circuit

Dual function 0.5" (13 mm) 4-digit LCD

1 reading per second approx.

Display

Sampling rate

Sensors

Air velocity/flow sensor: Conventional angled vane arms with

low-friction ball bearing

Temperature sensor: NTC-type precision thermistor

Auto shut off after 20 minutes to preserve battery life

32°F to 122°F (0°C to 50°C)

14 to 140^oF (-10 to 60^oC)

Automatic Power off

Operating Temperature

Storage Temperature

Operating Humidity

Storage Humidity

Operating Altitude

Battery

<80% RH

2000 meters (7000ft) maximum

One 9 volt (NEDA 1604) battery

Battery life

80 hours approx. (if the Backlight is used continuously, battery

life will be reduced significantly)

Battery Current

Weight

8.3 mA DC approx.

1.6 lbs. (725g) including battery & probe

Dimensions

Main instrument: 7.0 x 2.9 x1.2" (178 x 74 x 33mm)

Sensor Head: 2.75” (70mm) Diameter

Model AN100 Version 2.0 02/06

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.

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.

ꢀ

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

Model AN100 Version 2.0 02/06

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) = ꢀ x r²

Radius

Where ꢀ = 3.14 and r²= radius x radius

Cubic equations

CFM (ft³/min) = Air Velocity (ft/min) x Area (ft²)

CMM (m³/min) = Air Velocity (m/sec) x Area (m²) x 60

NOTE: Measurements made in inches

must be converted to feet or meters before using the above formulae.

Unit of Measure Conversion Table

m/s

ft/min

196.87

knots

1.944

0.00987

km/h

3.6

MPH

2.24

1 m/s

1 ft/min

1 knot

1 km/h

1 MPH

0.00508

0.5144

0.2778

0.4464

0.01829

1.8519

0.01138

1.1523

0.6222

101.27

54.69

87.89

0.54

0.8679

1.6071

Model AN100 Version 2.0 02/06

AN100 [EXTECH]

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