EXTECH 45170

4-in-1 Humidity, Temperature Airflow and Light Meter

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

The EXTECH 45170 is a handheld device featuring a vane airflow sensor, a Type K thermocouple input jack, a digital display, and several control buttons. Key components include:

1. Vane Airflow Sensor: Located at the top, used for measuring air velocity.
2. Type K Thermocouple Input Jack: For connecting an external Type K thermocouple probe.
3. Display: A dual-line LCD screen showing measurements and status indicators.
4. Power Button: Turns the device on and off.
5. Unit/Zero Button: Selects measurement units or zeroes the display.
6. °C/°F /Lux/Ft-cd Button: Switches between temperature units (°C/°F) and light units (Lux/Footcandle).
7. Light Sensor: Located on the front, measures ambient light levels.
8. RH and Air Temperature Sensors: Integrated sensors for humidity and ambient temperature.
9. Hold Button: Freezes the current reading on the display.
10. Max/Min Button: Records and displays maximum and minimum measured values.
11. Function Button: Cycles through the different measurement modes (Air Velocity, Humidity/Temperature, Type K Temperature, Light).

Operation

Turn Power ON

Press the power button to turn the meter on. The meter performs 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 the Unit/Zero button to select the 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 the 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 button to select Lux or Footcandle units of measure.

3. Before making measurements, "Zero" the meter 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 the 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 button again and the MAX symbol along with the maximum value will appear on the display.

3. Press the Max/Min button 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 symbols will disappear from the display once this is done.

Additional Functions and Disposal

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' 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.

Disposal

Users 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. Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle.

Useful Equations

Area Equations

For rectangular areas: A = W x H (where A is Area, W is Width, H is Height)

For circular areas: A = π x R² (where A is Area, R is Radius)

Cubic Equations

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

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

Specifications

Range Specifications

Measurement	Range	Resolution	Accuracy
MPH (Miles per hour)	0.9 to 67.0 MPH	0.1 MPH
km/hr (kilometers per hour)	1.4 to 108.0 km/h	0.1 km/h
Knots (nautical miles per hour)	0.8 to 58.3 knots	0.1 knots	≤ 3937 ft/min: ±3% F.S. > 3937 ft/min: ±4% F.S.
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	1 ft/min
Temperature/Thermistor	32 to 122°F (-0 to 50°C)	0.1°F/°C	± 2.5°F (± 1.2°C)
Temperature/Thermocouple	-148 to 2372°F	0.1°F	± (1% + 2°F)
	-100 to 1300°C	0.1°C	± (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)
Light (Auto Ranging)	0 to 2,200 Lux	1 Lux	±5% rdg +8 digits
	1,800 to 20,000 Lux	10 Lux
	0 to 204.0 Fc	0.1 Fc
	170 to 1,860 Fc	1 Fc

General Specifications

Display: 4 digit (9999 count) Dual Display LCD
Sensors: Thin film capacitance humidity sensor
Min/Max: Recalls the highest/lowest reading
Data Hold: Freezes the display
Operating conditions: 0 to 50°C (32 to 122°F) / < 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)

Warranty and Support

Two-year Warranty

Teledyne FLIR LLC warrants this Extech brand instrument to be free of defects in parts and workmanship for two years from date of shipment (a six-month limited warranty applies to sensors and cables). For full warranty text, visit: http://www.extech.com/support/warranties.

Calibration and Repair Services

Teledyne FLIR LLC offers calibration and repair services for Extech brand products. NIST traceable calibration is available for most products. Contact them for details on calibration and repair availability. Annual calibrations are recommended for performance and accuracy verification. Product specifications are subject to change without notice. Visit www.extech.com for the most up-to-date product information.

Contact Customer Support

Customer Support Telephone List: https://support.flir.com/contact

Calibration, Repair, and Returns: repair@extech.com

Technical Support: https://support.flir.com

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