Extech Instruments 45170 User manual

User's Guide

4-in-1 Humidity, Temperature Airflow

and Light Meter

Model 45170

45170 –EU-EN-V1.2-5/11

Introduction

Congratulations on your purchase of Extech’s Model 45170 4-in-1 Humidity, Temperature, Airflow

and Light Meter. With careful use, this meter will provide years of reliable service.

Meter Description

1. Vane Airflow Sensor

2. Type K Thermocouple Input Jack

3. Display

4. Power Button

5. Unit /Zero Button

6. C°/F° /Lux/Ft-cd Button

7. Light Sensor

8. RH and Air Temperature Sensors

9. Hold Button

10. Max/Min Button

11. Function Button

45170 –EU-EN-V1.2-5/11

Operation

Turn Power ON

Press the power button to turn power on. The meter will perform a short self-test.

A. Air Velocity Measurements

1. Press the Function button to select the Anemometer mode. In Air Flow mode, the

display will show Air Velocity and Temperature.

2. Press Unit/Zero button to select desired unit of measure (FPM, MPH, KNOT, KM/H, or

M/S) and face the Air Flow Sensor towards the source of wind.

3. Allow time for the reading to stabilize and note value. From a practical point of view the

velocity may fluctuate slightly.

B. Humidity and Ambient Air Temperature Measurements

1. Press the Function button to select RH mode.. In RH mode, the display will show %RH

and Temperature.

2. Press the °C/°F button to select the desired temperature unit of measure.

C. Temperature Measurements Using Type K Thermocouple

1. Press the Function button to select the Temperature mode. In Temperature mode, the

display will show only temperature.

2. Plug the thermocouple into the meter's thermocouple input jack. If no thermocouple is

connected, or if the thermocouple is defective, the meter will display “-----“. (Primary

display temperature will only work if a thermocouple is connected).

D. Light Measurements

1. Press the Function button to select the Light Meter mode . The light values are

displayed and orientated 180° from the other functions for easy use.

2. Press the Lux/Ft-cd to select Lux or Footcandle units of measure.

3. Before making measurements “Zero” the meter out by blocking the light sensor to

simulate a no light condition and pressing the Unit/Zero button.The reading should go

to Zero.

4. Hold the sensor toward the light source and note reading.

MIN, MAX, Data Recording Function

1. Press the Max/Min button once. The RECORD symbol will appear on the display.This starts

the Min/Max Data Recording Mode.

2. Press the Max/Min again and the MAX symbol along with the maximum value will appear on

the display.

3. Press the Max/Min once more and the MIN symbol along with the minimum value will

appear on the display.

4. To Clear the recorded Max/Min values press the HOLD button once. Press and Hold the

Max/Min button for 3 seconds to exit Min/Max Data Record Mode and return to normal

measurement mode. Record and Max/Min will disappear from the display once this is done.

45170 –EU-EN-V1.2-5/11

Data Hold

Press the HOLD button to freeze the reading in the display. The 'HOLD' icon will appear on the

upper right-hand side of the display. Press the HOLD button again to return to normal operation (the

'HOLD' hold icon will disappear).

Auto Power OFF

The meter will automatically turn off after 10 minutes if no keys are pressed during this period. Auto

power off is disabled in the max/min recording mode.

Turning Power OFF

Press the power button to turn power off.

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

Useful Equations

Area equations

Cubic equations

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

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

A = pi x R 2

A = W x H

45170 –EU-EN-V1.2-5/11

Specifications

Range Specifications

Measurement Range Resolution Accuracy

MPH (Miles per hour) 0.9 to 67.0MPH 0.1MPH

km/hr (kilometers per hour) 1.4 to 108.0 km/h 0.1km/h

Knots (nautical miles per hour)

0.8 to 58.3 knots 0.1knots

m/sec (meters per second) 0.4 to 30.0 m/s 0.1 m/s

ft/min (feet per minute) 80 to 5910 ft/min 1ft/min

≤ 3937 ft/min: ±3% F.S.

> 3937 ft/min: ±4% F.S

Temperature/Thermistor 32 to 122oF (-0 to 50oC) 0.1oF/C ± 2.5oF (± 1.2oC)

Temperature /Thermocouple -148 to 2372°F

-100 to 1300°C

0.1°F

0.1°C

± (1% + 2°F)

± (1% + 1°C)

Relative Humidity 10.0 to 95.0% 0.1% ±4% RH (from 10% to 70%RH)

±4%rdg +1.2% RH (> 70% RH)

0 to 2,200 Lux 1 Lux

1,800 to 20,000 Lux 10 Lux

0 to 204.0 Fc 0.1 Fc

Light (Auto Ranging )

170 to 1,860 Fc 1 Fc

±5% rdg +8 digits

General Specifications

Display 4 digit (9999 count) Dual Display LCD

Sensors Thin film capacitance humidity sensor

Min/Max Min/Max recalls the highest/lowest reading

Data Hold Data Hold freezes the display

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

Power supply 9 Volt Battery

Dimensions / Weight Instrument: 156 x 60 x 33mm( 6.14 x 2.36 x 1.29”)

Vane: 24mm ( 1”) diameter / 160 g (5.7 oz)

www.extech.com

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