Extech Instruments AN200 Manual de usuario

User's Manual

CFM/CMM Thermo Anemometer +

InfraRed Thermometer

Model AN200

UNITS

AREA

RECALL

cf m

cmm

nemometer

hermometer

AN200

PROBE

TEMPERATURE

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Introduction

Congratulations on your purchase of the Extech AN200 CFM/CMM Thermo Anemometer with

InfraRed Thermometer. This instrument measures Air Velocity, Air Flow (volume), Air

Temperature (with probe) and Surface Temperature (with the InfraRed function). The large, easy-

to-read backlit LCD includes primary and secondary displays plus numerous status indicators.

The InfraRed feature includes a laser pointer for convenient targeting. In addition, the meter can

store 16 area setting dimension for easy recall. This meter is shipped fully tested and calibrated

and with proper use will provide years of reliable service.

Safety

Use extreme caution when the laser pointer beam is on

Do not point the beam toward anyone's eye or allow the beam to strike

the eye from a reflective surface

Do not use the laser near explosive gases or in other potentially

explosive areas

CAUTIONS

Improper use of this meter can cause damage, shock, injury or death. Read and understand

this user manual before operating the meter.

Inspect the condition of the probe and the meter itself for any damage before operating the

meter. Repair or replace any damage before use.

If the equipment is used in a manner not specified by the manufacturer, the protection provided

by the equipment may be impaired.

This device is not a toy and must not reach children’s hands. It contains hazardous objects as

well as small parts that the children could swallow. In case a child swallows any of them,

please contact a physician immediately

Do not leave batteries and packing material lying around unattended; they can be dangerous

for children if they use them as toys

In case the device is going to be unused for an extended period of time, remove the batteries

to prevent them from draining

Expired or damaged batteries can cause cauterization on contact with the skin. Always,

therefore, use suitable hand gloves in such cases

See that the batteries are not short-circuited. Do not throw batteries into the fire.

Do not directly view or direct the laser pointer at an eye. Low power visible lasers do not

normally present a hazard, but may present some potential for hazard if viewed directly for

extended periods of time

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Meter Description

1. Power ON/OFF button

2. Probe input jack

3. Laser pointer

4. IR Sensor

5. Rubber holster

6. LCD Display

7. IR thermometer measurement button

8. Airflow buttons (4)

9. Air Temperature function buttons (2)

10. Vane

11. Airflow Average button

12. Backlight button

13. MAX‐MINbuttonforTEMPERATUREmode

14. HOLDforTEMPERTAUREfunctions

15. MAX‐MINbuttonforAIRVELOCITY/AIRFLOW(alsousedasleftarrowbutton)

16. UNITSforAIRVELOCITY/AIRFLOWmode(alsousedasuparrowbutton)

17. HOLDforAIRVELOCITY/AIRFLOWmode(alsousedasrightarrowbutton)

18. AREAbuttonforAIRFLOW(Volume)mode

Seenextsectionforadditionalkeypaddescriptioninformation.

Batterycompartmentislocatedonrearofinstrument,rubbermeterjacketmustberemovedto

accessbatterycompartment

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Keypad

•Press to turn the meter ON or OFF

•IR + Laser Pointer Press and hold to measure.

•MAX/MIN (Airflow) Record and store the highest and lowest 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.

•HOLD Press to freeze the displayed reading. Press again to unlock display. ►(RIGHT) also serves

as change digit button in AREA mode.

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

Press and hold to scroll thru memory locations.

This button also clears memory in the Averaging mode.

•Press to turn the backlight on/off. Hold to disable Auto Power Off.

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

temperature.

•HOLD (Temperature) Press to freeze the displayed temperature reading. Press again to unlock the

display.

•AVG Press and hold to enter averaging mode. Averages up to 20 readings.

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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

PROBE TEMP: Reminder that the top LCD digits represent Air (Vane) Temperature

: Indicates that the laser pointer is on.

IR TEMP: Indicates that the larger LCD digits represent IR temperature measurement

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

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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 dashed lines in place of an air velocity reading.

Air Velocity Measurements

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.

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. Refer to the diagram.

4. View the air velocity and temperature 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 Measurements (Up to 20 Point averaging)

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 all desired 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.

airflow

Arrow

Side view of Vane

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Air Flow Measurements (CMM / CFM)

1. Turn on the meter using the ON/OFF button

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.

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

AREA button until it beeps twice. The 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 AREA 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 AREA to scroll thru the 8 memory locations. Press and hold the AREA button until it beeps

twice to return to the CFM or CMM measuring mode.

Air Flow Measurements (Up to 20 Point averaging)

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. (IMPORTANT: Please note that the average readings are only held for 5 seconds and

cannot be recalled.)

4. Repeat steps 2 - 3 until all desired points have been measured.

5. Press the AREA button to clear the multipoint averaging memory.

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

twice.

airflow

Arrow

Side view of Vane

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Data Hold (Air Velocity/Air Flow)

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

later viewing.

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 Airflow MAX/MIN button. The AVG indicator and RECORD indicator along with

the average 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. The MAX indicator will appear on the display and display the

Max reading.

3. 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 and display the Min reading.

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 the AREA

button once when displaying the current reading.

Temperature Units

1. Remove the meter’s rubber protective jacket and select the desired temperature units using the

°F/°C slide switch located in the battery compartment.

2. Replace the protective jacket and connect the sensor to the sensor input jack on top of the

meter.

Data Hold (Air Temperature)

1. While taking measurements, press the PROBE TEMPERATURE HOLD button to freeze the air

temperature reading.

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

3. Press PROBE TEMPERATURE HOLD again to return to normal operation.

Max/Min Record (Air Temperature)

This allows the user to record and view the highest (MAX), lowest (MIN) air temperature readings.

1. Press the Temperature MAX/MIN button once. The MAX indicator will appear on the display

and the meter will begin keeping track of the MAX/MIN air temperature values.

2. Press the button again to view the minimum reading. The MIN indicator along with the minimum

air temperature reading will appear on the LCD display.

3. Press the button again to return to normal operation.

Automatic Power OFF

To conserve battery life, the meter automatically turns off after 20 minutes. To override 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 mode.

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InfraRed (Non-Contact) Temperature Measurements

1. The IR sensor is located at the top of the meter.

2. Point the sensor toward the surface to be measured.

3. Press and hold the red IR button to begin measuring the surface temperature of

a desired target. IR TEMP and will appear on the display. The laser pointer

will switch on to help aim the meter.

4. The measured IR surface temperature will appear at the center of the LCD

(larger digits). The temperature displayed is the temperature of the area within

the spot.

5. When the red IR button is released, the laser pointer will switch off and the

reading will freeze (data hold) on the display for approximately 3 seconds.

6. Note that the vane (Air Temperature) continues to monitor temperature during

IR tests and its temperature is displayed on the top of the LCD (smaller digits).

7. After approximately 3 seconds the meter defaults to the Air Flow and Air

Temperature display.

WARNING: Do not directly view or direct the laser pointer at an eye. Low power visible lasers

do not normally present a hazard, but may present some potential for hazard if viewed directly for

extended periods of time.

Battery Replacement

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

1. Disconnect the vane.

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

Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriatecollectionsites,theretail

storewherethebatterieswerepurchased,orwhereverbatteriesaresold.Disposal:Donotdisposeofthis

instrumentinhouseholdwaste.Theuserisobligatedtotakeend‐of‐lifedevicestoadesignatedcollection

pointforthedisposalofelectricalandelectronicequipment.

OtherBatterySafetyReminders

oNeverdisposeofbatteriesinafire.Batteriesmayexplodeorleak.

Nevermixbatterytypes.Alwaysinstallnewbatteriesofthesametype

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Specifications

Air Velocity Range Resolution Accuracy

m/s (meters per sec) 0.40 - 30.00 m/s 0.01 m/s ± (3%rdg + 0.20 m/s)

km/h (kilometers/hour) 1.4 - 108.0 km/h 0.1 km/h ± (3%rdg + 0.8 km/hr)

ft/min (feet per minute) 80 – 5900 ft/min 1 ft/min ± (3%rdg + 40 ft/m)

mph (miles per hour) 0.9 – 67.0 mph 0.1 mph ± (3%rdg + 0.4 MPH)

knots (nautical MPH) 0.8 to 58.0 knots 0.1 knots ± (3%rdg + 0.4 knots)

Air Flow Range Resolution Area

CMM (cubic meters/min) 0-999999 m3/min 0.1 0 to 999.9m2

CFM (cubic ft/min) 0-999999 ft3/min 0.1 0 to 999.9ft2

Air Temperature Range Resolution Accuracy

14 - 140oF (-10 - 60oC) 0.1oF/C 4.0oF (2.0oC)

InfraRed Temperature Range Resolution Accuracy

-58 to -4oF (-50 to -20oC) 0.1oF/C ±9.0oF (5.0oC)

-4 to 500oF (-20 to 260oC) 1oF/C ±2% reading or ±4oF

(2oC) whichever is

greater

Circuit Custom LSI microprocessor circuit

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

Sampling rate 1 reading per second approx.

Sensors Air velocity/flow sensor: Conventional angled vane arms with low-friction

ball bearing.

Temperature sensors: NTC-type precision thermistor and InfraRed

IR Spectral response 6 to 14µm

IR Emissivity 0.95 fixed

IR distance ratio 8:1

IR sampling rate 2.5 readings per second approx.

Automatic Power off Auto shut off after 20 minutes to preserve battery life

Operating Temperature 0°C to 50°C (32°F to 122°F)

Storage Temperature -10 to 60oC (14 to 140oF)

Operating Humidity <80% RH

Storage Humidity <80% RH

Operating Altitude 2000 meters (7000ft) maximum

Battery One 9 volt (NEDA 1604) battery

Battery life 80 hours approx. (if Backlight and Laser are used continuously the

battery life is reduced to 2 to 3 hours approx.)

Battery current 8.3 mA DC approx.

Weight 725g (1.6 lbs) including battery & probe

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

Sensor Head: 70mm (2.75”) Diameter

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