EXTECH 45118 User Guide

If the meter will not power up as usual or the display contrast becomes weak

Maintenance

Battery Replacement

) x 60

)

45118-EU-EN-V4.3 3/11

/min) = Air Velocity (m/sec) x Area (m

You, as the end user, are legally bound (EU Battery ordinance)

to return all used batteries, disposal in the household garbage

is prohibited! You can hand over your used batteries /

accumulators at collection points in your community or wherever

batteries / accumulators are sold!

Disposal: Follow the valid legal stipulations in respect of the

disposal of the device at the end of its lifecycle

assembly (on the rear of the meter). Twist the impeller assembly

counter-clockwise to the "O" (open) position and remove it.

assembly clockwise then tighten the set screw.

and difficult to read, replace the lithium battery. To do so, turn the battery

compartment cover in a CLOCKWISE direction to remove it. The battery will

be visible in the battery compartment, observe the position of the battery and

replace the new one in the same position. Affix the battery compartment

cover by turning it in a COUNTER-CLOCKWISE direction. Dispose of the

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

codes.

NOTE: The anemometer is very accurate at low and mid-range air speeds.

Constant use at very high speeds may damage the impeller’s bearing and

reduce over-all accuracy. 1. To replace the impeller, remove the set screw next to the impeller

Vane Impeller Replacement

2. Install the new impeller by inserting and twisting the new impeller

Measure the area of the duct using the diagrams below for rectangular and circular ducts (If the

duct measurements are made in inches, divide the inches by 144 to get the area in square

feet). Plug the area value (in square feet) in the cubic equations below. Note that the air

CFM Measurements

velocity must be plugged into the cubic equations also.

/min) = Air Velocity (ft/min) x Area (ft

CMM (m

CFM (ft

F ±1.8

C ±1

C (5 to 122

windchill, and temperature (C/F)

and precision thermistor for temperature

rear)

case

of meter)

Display Dual LCD with multifunction indicators

Measurements Knots, km/h, MPH, ft/min, m/sec, Beaufort force,

Wind-speed Moving 2 second average with 2 second gust detect

Sensor Sapphire bearing, non-corrosive vane for air velocity

Average Mode Choice of 5, 10, or 13 second average readings

Max Display Push button highest reading recall

Data hold Freeze most recent display

1. Vane impeller

2. Precision thermister

3. LCD display

4. POWER and HOLD key

5. UNITS and MODE key

6. Battery compartment (on

7. Swivel handle and storage

8. Lanyard holder

9. Impeller set screw (on rear

Meter Description

F) and Air Velocity units. Press the

C or

Specifications

Sample time 1 reading per second

Operating humidity < 80% RH

Water-resistant To 1 meter (3’)

Power supply Lithium battery type CR-2032 or equivalent

Min/Max wind-speed 1.1 to 62.5 MPH

Operating temperature -15 to 50

Vane: 24mm (1”) diameter

1.1 to 62.5 MPH 0.2 MPH ± (3%rdg +0.4MPH)

Battery life 400 hours approx.

Weight 95 g (3 oz)

Dimensions Instrument: 133 x 70 x 19mm (5.25 x 2.75 x 0.75”)

2.2 Electrical Specifications

Measurement Range Resolution Accuracy

MPH (Miles per

hour)

1.0 to 54.3 knots 0.3 knots ± (3%rdg +0.6knots)

1.8 to 100.6 km/h 0.7 km/h ± (3%rdg +1.4km/h)

km/hr (kilometers

per hour)

0.50 to 28.00 m/s 0.01 m/s ± (3%rdg +0.2m/s)

100 to 5500 ft/min 20ft/min ± (3%rdg +40ft/min)

Knots (nautical

miles per hour)

m/sec (meters

per second)

ft/min (feet per

minute)

C 0.1

F 0.1

0 to 122

-18 to 50

Beaufort force 1 to 17 BF 1 BF ± 1

Temperature

UNITS/MODE key repeatedly until the desired units are displaying. When

finished, press the ON/OFF/HOLD key momentarily to restart the meter

with the desired units.

Dual Display will illuminate. The top (larger) display indicates air speed and

the lower display indicates temperature.

from the rear of the meter (opposite side from the front panel logo, part

number, etc.).

holding the ON/OFF/HOLD key while taking measurements. To return to

normal operation, release the key and restart the meter.

MODE key until the MAX icon appears on the lower left-hand side of the

LCD. Both the Air Velocity and Temperature indication will represent the

highest readings measured since the meter was last powered.

seconds. To select 5, 10 or 13 second averaging, first press and hold the

UNITS/MODE key until the MAX icon appears. Next, press the key again

momentarily and the AVG icon will appear. The 13 second average mode

is selected. Now press the key again and the number 5 will appear. Leave

it there if an average of 5 seconds is desired. Press the key once more for

a 10 second average mode. To return to normal operation press the

UNITS/MODE key repeatedly until all lower left-hand icons disappear.

icon appears. Press the key repeatedly until the WCI icon appears. The

temperature display will now factor in the wind chill. To return to normal

operation, press the UNITS/MODE key again and the WCI icon will

disappear.

pressing the UNITS/MODE key from a powered down condition. The LCD

Congratulations on your purchase of Extech’s 45118 Mini Thermo-

Anemometer. This meter is shipped fully tested and calibrated and, with

User Manual Model 45118 Mini Thermo-Anemometer

proper use, will provide years of reliable service

Introduction

will show temperature units (

2. Power the meter by pressing the ON/OFF/HOLD key momentarily. The

3. Position the meter so that the measured airflow enters the meter vane

4. Activate Data Hold (to freeze the most recent display), by pressing and

Operation

1. Select the desired units for air velocity and temperature by momentarily

5. Max operation: After a measurement session, press and hold the UNITS /

6. Average mode operation: Normally the meter averages readings every 2

7. Wind chill indicator: Press and hold the UNITS/MODE key until the MAX

the meter automatically shuts down to preserve battery life.

8. AUTO POWER OFF: After approx. 15 mins, if meter keys are not touched,