Extech Instruments AN510 User manual

USER MANUAL

CFM/CMM Thermo Anemometer

Model AN510

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Introduction

Thank you for selecting the Extech AN510 CFM/CMM Thermo-Anemometer. This instrument

measures Air Velocity, Air Flow (volume), Air Temperature, and Type K Temperature (external

probe). The backlit LCD includes primary and secondary displays plus numerous status indicators.

This device is shipped fully tested and calibrated and, with proper use, will provide years of

reliable service. Please visit our website ( ) to check for the latest version and

translations of this User Manual, Product Updates, and Customer Support.

Features

• Built-in microprocessor circuit

• Low-friction ball bearing mounted wheel provides high accuracy

• LCD with backlight for easy viewing

• Compact, light-weight, easy to use design

• Wristlet for easy one-handed operation

Safety

Please read the entire User Manual and Quick Start before operating this device. Use the meter

only as specified and do not attempt to service or open the meter housing. Do not allow children

to handle the meter. Please dispose of batteries and meter responsibly and in accordance with

all applicable laws and regulations.

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Meter Description

1. Air Velocity vane

2. Type K Temperature probe input

3. LCD Display

4. ON/OFF Power button

5. Backlight and▲button

6. MODE button

7. Unit Button

8. SET and▼button

9. RECORD button

10. Hold Button

LCD Description

1. Air Velocity

2. Record

3. Max

4. Min

5. Hold

6. Air Flow

7. Battery Indicator

8. Auto Power OFF

9. Unit of Measure

10. Temperature Units

11. Lower LCD Display

12. Upper LCD Display

13. Type K Temperature

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Operation

Power

Short press the power button to power the meter ON or OFF. The meter will begin displaying

readings for the mode selected. If the LCD does not switch on, check the batteries located in the

rear battery compartment.

Backlight

The LCD is equipped with backlighting for easier viewing, especially in dimly lit areas. Press the

backlight button to turn the backlight on. The backlight will automatically turn off after 10

seconds.

Data Hold

Short press the H(hold) button to freeze or unfreeze a reading on the display. The Hicon and

the most recent reading will appear in the display. Hold function will not work while in record

mode.

Auto Power OFF (APO)

In order to conserve battery life, the meter will automatically shut off after approximately 10

minutes of inactivity. The APO icon appears in the display when APO is programmed to be ON

(see the SET function section later in this manual).

Mode

Press the mode M button to select the mode of operation. Each press of the button will step

through the three modes.

1. Air Velocity – Displays the air speed through the vane in the units selected. The AIR icon will

appear in the display. Air velocity will be displayed on the upper part of the LCD.

Air temperature will be displayed on the lower part of the LCD while in air velocity mode.

2. Air Flow – Displays the volume of air passing through a duct. The Flow icon will appear in the

display. The duct area must be entered using the SET function for proper measurements.

3. Type K Temperature – Displays the temperature. The K icon will appear in the display. A type

K thermocouple must be connected to the meter for Type K temperature displays.

Air Velocity Units

1. Select Air Velocity with the M button.

2. Press the UNIT button to step through and select the desired units.

(ft/min, m/s, km/h, MPH, knots)

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SET Function

(APO On/Off, Temperature Units and Air Flow Units Settings)

1. Press and Hold the ▼ button for 2 seconds. The yes or no APO display will appear:

2. Press the ▲or ▼button to turn the APO ON (YES) or OFF (NO).

3. Press the Rbutton to save the selection.

4. The temperature units display will appear:

5. Press the ▲or ▼button to change the degree F or degree C units.

6. Press the Rbutton to save the selection.

7. The Air Flow units display will appear:

8. Press the ▲or ▼button to select CMM or CFM units.

9. Press the Rbutton to save the selection.

10. Short press the power button or wait approximately 10 seconds for the meter to return to

normal operation.

Setting Dimensions for Airflow Measurements

The area of the air duct in square feet or square meters must be entered to perform air flow

(volume) measurements. Remember to convert square inches or centimeters to square feet or

square meters for area measurements before continuing. See ‘Useful equations and

Conversions’ later in this manual for additional information.

1. Select Air Flow with the M button.

2. Press the SET button. F-2 (ft2) or m-2 (m2) will appear in the display depending on the air

flow units selected (CFM or CMM).

3. Press the ▲or ▼button to set the area in square feet or square meters in the display.

4. Press the Rbutton to save the value.

5. With the area values programmed, measure air flow in the duct to obtain air volume

(CFM or CMM) readings.

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MAX-MIN Recording

In this mode, the meter records the maximum and minimum values over time.

1. Short press the Rbutton to enter the Record mode. The record icon will appear on the

display. The maximum and minimum values will be recorded and updated during the

measurement period.

2. Short press the Rbutton to stop the Max-Min recording. The icon and the MAX value

that occurred during the recording period will be displayed.

3. Short press the Rbutton to display the icon along with the MIN value that occurred

during the recording period.

4. Short press the Hbutton to clear the memory and start a new max/min measurement

period.

5. Long press the Rbutton to exit record mode.

Maintenance

Battery Replacement

1. Power OFF the meter.

2. Remove the flat head screw that secures the battery compartment at the back of the

meter.

3. Open the battery compartment and replace the 3 AAA batteries observing correct polarity.

Re-assemble the meter before use

Safety: Please dispose of batteries responsibly; never dispose of batteries in a fire, batteries may

explode or leak. If the meter is not to be used for 60 days or more, remove the battery and store

separately.

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.

Cleaning and Storage

Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or

solvents.

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Specifications

General

Display Backlit LCD 35 x 30mm (1.38 X 1.18 ”)

Sensor Air velocity: Low friction ball bearing; Air Temperature:

thermistor

Measurements Air Velocity, Air Temperature, Air Flow, Type K thermometer

Tripod mount On back of meter

Operating Humidity 80% RH Max

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

Over Limit Display “- - - -“

Power Supply 3 x 1.5V AAA batteries

Power Consumption Approximately 5mA DC

Weight 136g (4.8 oz.)

Dimensions (HxWxD) 141x 57x 25mm (5.5 x 2.3 x 1.1 “)

Air Velocity

Units Range Resolution Accuracy

ft/min 80 to 3937 1

±3% F.S.

m/s 0.4 to 20.0 0.1

km/h 1.4 to72.0 0.1

MPH 0.9 to 44.7 0.1

knots 0.8 to 38.8 0.1

°C 0 to 50 0.1°±1.2°C

°F 32 to 122 0.1°±2.5°F

Air Flow

CMM (m3) 0.024 to 36000 0.001/0.01/0.1/1

0.001/0.01/0.1/1/10 (x10) / 100 (x100)

CFM (ft3) 0.847 to 1271300

Type K Thermometer

°C -50 to 1300

-50.1 to -100 0.1°±(0.4% + 0.5°C)

±(0.4% + 1°C)

°F -58 to 2372

-58.1 to -148 0.1°±(0.4% + 1°F)

±(0.4% + 1.8°F)

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Useful Equations and Conversions

AREA equation for rectangular or square ducts

Area equation for circular ducts

Cubic equations

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 knots km/h MPH

1 m/s 1196.87 1.944 3.6 2.24

1 ft/min 0.00508 10.00987 0.01829 0.01138

1 knot 0.5144 101.27 11.8519 1.1523

1 km/h 0.2778 54.69 0.54 10.6222

1 MPH 0.446487.89 0.8679 1.6071 1

ISO-9001 Certified

Width (W)

Height (H)

Area (A) = Width (W) x Height (H)

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

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

Radius

Area (A) =

xr2

Where π = 3.14 and r2= radius x radius

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