Extech AN25 Manual

Extech Måleudstyr AN25

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User Manual - Model AnemometerAN25 - Hygro Thermo-

AN25-en-GB_V1.4 3/17

Introduction

Thank you for selecting the Extech Model Hygro Thermo AN25 -

Anemometer. Please visit our website (www.extech.com) to check for

the latest versi tomer Careon of this User Guide or to contact Cus .

Operation

Switching the Meter ON/OFF

• Press the POWER to switch button the meter ON

• Press and hold POWER for approx. 3 seconds to switch OFF

• The meter’s Auto Power OFF feature turns the meter OFF after 15

minutes of inactivity

Changing the Air Velocity Units

With the meter in air flow measurement mode press HOLD for approx. 3

seconds to change air flow units from m/s, KMH, M/H, FPM, BFT, KNT

and then back to m/s. See Specifications for icon definitions.

Change odes and Temperature unitsM

• Press MODE button to select the desired mode: WNCL (wind-chill),

TEMP, RH, ) ) ) HI (heat index , DP (dew point , wet bulbWB ( , WBGT (wet

bulb globe), and back to m/s.

• From any temperature mode press the HOLD button to change

temperature . units (°C / °F)

MAX/AVG Mode

• With the meter ON press the POWER button. The MAX icon will

display on the LCD with the highest reading. (maximum)

• Press POWER again. The AVG (average) icon will display on the LCD.

Press the POWER button to step through the averaging time

selections (5sec, 10sec, and to 13sec). After selecting the averaging

time the meter will begin averaging readings.

• To exit the MAX/AVG mode, repeatedly press the POWER button until

MAX and AVG icons switch OFF.

Data Hold

• Press the HOLD button to freeze the displayed reading. The HOLD icon

will appear on the display.

• Press LD HO button again to return to normal operating mode.

Auto Power OFF

• The meter will power OFF after about 15 minutes of inactivity.

• To disable Auto Power OFF: With the meter switched OFF, press the

HOLD and POWER buttons until the meter switches ON.

• The 'n' icon will be displayed on the LCD and the meter will return to

normal operating mode.

• Now the meter will not switch OFF until the user manually switches it

OFF. Note that on the next cycle of power, the meter will revert to the

Auto Power OFF mode.

Error Messages

Er1: Sensor Error (replace unit); Er2: Measurement out of range

Important Note: If the meter is placed source of electricity the near a

electrical signal may affect the meter’s displayed reading.

Meter Description

1 Vane impeller

2 Relative Humidity & Temperature sensors

3 LCD display

4 POWER button

5 HOLD button

6 MODE button

7 Battery compartment (on rear)

8 Tripod mounting hole

9 Impeller set screw (on side)

Specifications

Measurements

Range

Resolution

Accuracy

m/s (meters per second)

0.40 to 25 m/s

0.1 m/s

± (3%FS)

FPM (feet per minute)

80 to 999 ft/min

0.1 ft/min

1000 to 4922 ft/min

1 ft/min

KMH (kilometers per hour)

1.4 to 90.0 km/hr

0.1 km/hr

M/H (miles per hour)

0.9 to 55.9 mph

0.1 mph

BFT (beaufort)

0 10 to

1 BFT

± 1 BFT

KNT (knots)

0.8 to 48.6 knots

0.1 knots

± (3%FS)

Temp./WNCL (Wind- chill)

-15 to 50

C (5 to 122

0.1

C/F

± 1

C (± 1.8

RH (relative humidity)

5 to 95% RH

0.1% RH

± 3% RH *

WB (wet bulb)

-15 to 50

C (5 to 122

0.1

C/F

Calculation

D P (dew point)

-75 to 50oC (- 103 to 122oF)

0.1oC/F

HI (heat index)

-35 to 205oC (- 31 to 401oF)

0.1oC/F

WBGT (wet bulb globe)

- 29 to 54oC (-20 to 130o

F )

0.1oC/F

*@25oC 10-90%RH otherwise ±5%RH

General Specifications

Display

28 x 14mm (1.1 x 0.5”) LCD with low battery &

multifunction indicators

Max/Avg/ Hold Modes

Max shows highest reading; AVG averages readings;

Data Hold freezes the display

Operating conditions

0 to 50oC (32 to 122oF ) / < 80% RH

Power supply

Lithium battery (CR- 2032 or equivalent)

Dimensions/weight

152 x 40 x 18mm (6.0 x 1.6 x 0.7”); 60g (2.1 oz.)

Battery Replacement

The meter has a low battery ind Important: Turn the meter icator (BAT).

off before opening the battery compartment Using a coin, t. urn the

battery compartment cover CLOCKWISE to remove it. Once C -OUNTER

opened, e position of the battery the new one in the observe th , placing

same position. Secure the battery co ispose of mpartment cover and d

the lithium battery in accordance with local, state, or national disposal

codes.

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.

Impeller Replacement

The replacement part number for the impeller kit is AN25-V (two

impellers are supplied). Loosen and remove the impeller set screw (9)

and then, from the back of the meter, turn the impeller counter-

clockwise to remove. Insert new impeller and turn it clockwise to lock

it. Insert and tighten the impeller set screw to complete the

replacement.

ISO- 9001 Certified

www.extech.com

Produkt Specifikationer

Mærke:	Extech
Kategori:	Måleudstyr
Model:	AN25

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