EXTECH AN250W Anemometer with Connectivity to ExView App User Manual
- June 6, 2024
- EXTECH
Table of Contents
EXTECH AN250W Anemometer with Connectivity to ExView App
Introduction
Thank you for selecting the Extech AN250W Anemometer. This meter measures air velocity and temperature. The vane, situated at the top of the meter, measures the velocity of moving air and includes a sensor that measures air temperature. The air velocity and temperature readings are shown on the top and bottom rows of the LCD, respectively. The AN250W also displays air velocity in the Beaufort scale (1 to 12). The meter includes Bluetooth connectivity, MAX/AVG memory, selectable units of measure, auto power-off, data hold, backlit LCD, and a tripod mount. Using the Extech ExView mobile app, you can pair your smart devices with the meter using Bluetooth. The app and the W Series meters were developed together for seamless integration. Download the free app from the App Store (iOS®) or from Google Play (Android™). This quality instrument is designed to provide years of reliable service, high accuracy, and simple operation. Please visit the Extech website for additional information and world-class support.
Safety
Please read all safety information before using this device
CAUTION
- Check for damage to the device’s housing, sensor, display, and battery compartment before use. If obvious damage or abnormalities are noticed, please discontinue use and return the device for service.
- Do not attempt to open the meter housing or access the sensor module. There are no user-serviceable components in this device.
- Replace the batteries immediately after the low battery symbol appears. If the device is to be stored for a period of months, please remove the batteries and store separately.
- Do not store the device in high temperature or humidity environments, inflammable or combustible areas, or where a strong electromagnetic field is present.
- This device is CE-certified.
FCC Compliance
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Product Description
Meter Description
- Vane anemometer with temperature sensor
- Backlit LCD (detailed below)
- Function buttons (detailed below)
- Tripod mount
- Battery compartment
Function Buttons
Display Symbols
- Maximum reading
- Average reading
- Data Hold mode
- Low battery symbol
- Air Velocity measurement and units
- Temperature reading and units
- Bluetooth active
- Auto Power Off (APO) symbol
- Beaufort scale abbreviation
- Beaufort measurement scale (1 to 12)
Operation
Powering the Meter The meter operates on three (3) 1.5 V (AAA) batteries, installed in the rear compartment. Long press the power button to switch the meter on. Short press the power button to switch the meter off. If the meter does not switch on, check the batteries for proper orientation. When the low battery symbol appears on the display, replace the batteries immediately to ensure accurate readings.
Auto Power Off (APO)
The meter switches off automatically five (5) minutes after the last button
press. The default mode for APO is ON (the APO symbol on the display indicates
that APO is enabled). To switch the APO function off, with the meter switched
on, long-press the power and data hold (H) buttons. The APO symbol will switch
off, indicating that the function is disabled. APO is reset each time the
meter’s power is cycled. Repeat this process to switch APO back on manually
Taking Measurements
- Long press the power button to switch the meter on.
- Hold the meter with the vane positioned in the flow of air. Allow the air to enter the vane from the back of the meter. The meter can also be tripod mounted.
- Read the velocity measurement on the top row of the LCD. The air temperature reading is shown on the bottom row.
- The Beaufort scale readings (1 to 12), are represented in the text boxes on the left side of the LCD.
- If an air velocity or air temperature measurement is outside the specified range, OL will appear on the display in place of a typical reading.
- Short press the power button to switch the meter off.
CAUTION
Do not touch or otherwise obstruct the sensor area.
Do not allow liquids to come in contact with the sensor.
Avoid overly dusty environments.
Magnetic induction can affect the sensor’s ability to operate correctly. Keep
the sensor
away from magnetic fields.
Changing Measurement Units
To step through the air velocity units menu, short press the UNIT button. The
air velocity units are m/s (meters per second), km/h (kilometers per hour),
ft/ min (feet per minute), mph (miles per hour), and knots. Long press the
UNIT button to toggle the displayed temperature units ℃ / ℉.
Data Hold Function
Short press the Data Hold (H) button to freeze/unfreeze the displayed
readings. While Data Hold is active, HOLD will appear on the LCD.
LCD Backlight
Long press the backlight button to switch the display backlight on or off.
Excessive use of the backlight will shorten battery life.
MAX/AVG Readings
When the device is switched on, it begins tracking the highest (MAX) and
average (AVG) readings. Short press the MAX/AVG button to step through the
MAX/AVG memories.
MAX is shown when the maximum reading is displayed and AVG is shown when the
Average reading is displayed. The memories are cleared each time the meter
power is cycled. Press the MAX/AVG button again to exit this mode (MAX and AVG
symbols are both off when you exit).
Bluetooth Operation
Long press the Bluetooth button with the meter on, to switch Bluetooth on or
off. This communication symbol is shown when Bluetooth is on. The Bluetooth
utility allows you to remotely monitor readings on an iOS or Android smart
device using the Extech ExView mobile app designed for use with this meter.
Download the mobile app from the App Store for iOS devices or from Google Play
for Android devices. Instructions for mobile app users are available from the
ExView product page on the Extech website (link below).
http://www.extech.com
Switch APO off when using Bluetooth by pressing and holding the power and H
buttons for 2 seconds (the APO symbol will switch off). This will prevent the
meter from automatically switching off while you are logging data or
monitoring readings in real-time on your smart device.
Maintenance
CAUTION
Warning: Do not open the housing or sensor module. Service should only be
performed by factory personnel, there are no user-serviceable components in
this device.
General Cleaning
Wipe the housing with a dry cloth as necessary to clean. Do not use abrasives
or solvents to clean this device.
Battery Replacement
This device is powered by three (3) 1.5 V (AAA) batteries. When the low
battery symbol appears, replace the batteries immediately, as explained below.
- Switch the meter off and remove the rear battery compartment cover.
- Replace the batteries, observing correct polarity. Always use batteries of the same type.
- Secure the battery compartment before use.
Do not dispose of used batteries or rechargeable batteries in household waste.
Specifications
General Specifications
| Display | 4 digit (9999) backlit multifunction LCD |
|---|---|
| Over range indication | OL is displayed when air velocity or air temperature |
measurements exceed the specified measurement range
Low battery indication| Battery symbol appears when batteries are low
Reading update rate| Two readings per second
Sensor types| Magnetic induction wind speed sensor and NTC (negative
temperature coefficient) sensor
Meter power| Three (3) 1.5 V (AAA) batteries
Dimensions| 6.4 x 2.2 x 1.1 in. (163 x 55 x 28 mm)
Weight| 4.2 oz. (118 g)
Measurement Specifications
Accuracy specifications apply for the following conditions: Temperature:
73.4℉ ± 9℉ (23℃ ± 5℃); Relative Humidity: ≦ 80 %
| Air Velocity ranges | Resolution | Accuracy (% of reading) |
|---|---|---|
| 1.5 to 30 m/s (meters per second) | 0.1 m/s | ± (5% + 0.5 digits) m/s |
| 5.4 to 108 km/h (kilometers per hour) | 0.1 km/h | ± (5% + 15 digits) km/h |
| 2.9 to 58 knots | 0.1 knots | ± (5% + 10 digits) knots |
| 3.3 to 67 mph (miles per hour) | 0.1 mph | ± (5% + 10 digits) mph |
| 295.2 to 5905 ft/min (feet per minute) | 0.1 ft/min* | ± (5% + 180 digits) |
ft/min
1 to 12 Beaufort scale (bft)| 1 bft| ± 1 bft
| *up to 999.9|
Note: m/s is the standard unit. All other units are calculated from the m/s
value.
Air Temperature range| Resolution| Accuracy
14 to 122℉ (-10 to 50℃)| 0.2℉ (0.1℃)| ± 4℉ (± 2℃)
Specifications
Environmental Specifications
For indoor use only
| Altitude | 6562 ft. (2000 m) maximum |
|---|---|
| Pollution degree | 2 |
| Operating conditions | 32 to 104℉ (0 to 40℃); ≦ 80% RH |
| Storage conditions | -4 to 140℉ (-20 to 60℃); ≦ 75% RH |
| Drop-proof rating | 3.3 ft. (1 m) |
Connectivity Specifications
| Connectivity | Bluetooth (with ExView app) |
|---|---|
| ExView app compatibility | iOS 13.0 and Android 9.0 or higher |
| Transmission distance | Up to 295.3 ft. (90 m) with no line-of-sight |
obstruction
Two-year Warranty
FLIR Systems, Inc. warrants this Extech brand instrument to be free of defects in parts and workmanship for two years from the date of shipment (a six-month limited warranty applies to sensors and cables). To view the full warranty text please visit http://www.extech.com/support/warranties.
Calibration and Repair Services
FLIR Systems, Inc. offers calibration and repair services for the Extech brand
products we sell. We offer NIST traceable calibration for most of our
products. Contact us for information on calibration and repair availability,
refer to the contact information below. Annual calibrations should be
performed to verify meter performance and accuracy. Product specifications are
subject to change without notice. Please visit our website for the most up-to-
date product information: www.extech.com
Contact Customer Support
Customer Support Telephone List:
https://support.flir.com/contact
Calibration, Repair, and Returns e-mail:
repair@extech.com
Technical Support: https://support.flir.com
Website: http://www.flir.com
Copyright
© 2021, FLIR Systems, Inc. All rights reserved worldwide.
Disclaimer
Specifications are subject to change without further notice. Models and
accessories are subject to regional market considerations. License procedures
may apply. Products described herein may be subject to US Export Regulations.
Please refer to exportquestions@flir.com
with any questions.
Publ. No. : NAS100075
Release: AA
Commit: 78827
Head: 78827
Language: en-US
Modified: 2021-08-23
Formatted: 2021-08-23
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