Extech Instruments LT250W User manual

Quick Start
LT250W Light Meter
Bluetooth® Connectivity with the
ExView® Mobile App

Quick Start (en)
PREPARATION
1. Included items: LT250W, Quick Start, and batteries.
2. Download the User Manual from the Extech website.
3. Download the ExView mobile app from the App Store (iOS®) or
Google Play (Android™).
4. Install batteries in the rear compartment.
5. Long press the power button to switch the meter on (short
press to switch off).
GENERAL SAFETY
• Check for damage to the device before use. Return the unit if
damage is evident.
• Do not attempt to open the meter housing or sensor.
• CE and FCC compliant.
TAKING MEASUREMENTS
1. Long press the power button to switch the meter on.
2. Hold the meter, place it on table or desk, or mount on tripod in
the test area.
3. For best results, allow the light to fully cover the sensor dome.
4. Read the illuminance reading on the LCD. If the x10 or x100 dis-
play appears, multiply the displayed reading by 10 or 100.
5. If the measurement is out of range, OL will appear.
BLUETOOTH OPERATION
Long press the Bluetooth button to switch Bluetooth on or off.
Download the ExView mobile app onto your smart device from the
App Store or Google Play.
Instructions for app use are available on the Extech website (Ex-
View product page). Switch APO off when using Bluetooth by
pressing the power and Hbuttons until the APO symbol
switches off.
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METER DESCRIPTION
1. Light sensor
2. Backlit LCD
3. Function buttons
4. Tripod mount
5. Battery compartment
FUNCTION BUTTONS
Long press to switch the meter on. Short press to switch off.
Long press to switch Bluetooth on/off.
Short press to cycle through MAX/MIN readings. MAX/MIN
memories are cleared each time meter power is cycled.
Short press to freeze/unfreeze the displayed reading.
Long press to switch the LCD backlight on/off.
Short press to toggle Lux and foot candle (Fc) units.
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DISPLAY SYMBOLS
1. Bluetooth active
2. Illuminance measurement
3. MAX/MIN memory modes
4. Data Hold
5. Low battery symbol
6. Units of measure
7. x10 and x100 indicators
BASIC SPECIFICATIONS
Display type 4 digit backlit LCD
Low battery indication Replace batteries when battery symbol
appears
Operating conditions 32 to 104℉(0 to 40℃); < 80% RH
Storage conditions -4 to 140℉(-20 to 60℃); < 75% RH
Illuminance ranges Resolution Accuracy (% of reading)
0 to 9999 Lux
≧10,000 Lux
≧100,000 Lux
1 Lux
10 Lux
100 Lux
± (4% + 8 digits)
± (5% + 10 digits)
± (5% + 10 digits)
Readings above 9999 are accompanied by a x10 or x100 display indicator
Foot candle (Fc) readings are converted from Lux measurements
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TWO-YEAR WARRANTY
FLIR Systems, Inc. warrants this Extech brand instrument to be free
of defects in parts and workmanship for two years from date of
shipment. View the full warranty at this link:
http://www.extech.com/support/warranties
CUSTOMER SUPPORT
Customer Support Telephone List:
https://support.flir.com/contact
Service e-mail:[email protected]
Technical Support:https://support.flir.com
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last page
Publ. No.: NAS100081
Release: AA
Commit: 78961
Head: 78963
Language: en-US
Modified: 2021-08-26
Formatted: 2021-08-26
Website
http://www.flir.com
Customer support
http://support.flir.com
Copyright
© 2021, FLIR Systems, Inc. All rights reserved worldwide.
Disclaimer
Specifications subject to change without further notice. Models and accessories
subject to regional market considerations. License procedures may apply.
Products described herein may be subject to US Export Regulations. Please
refer to [email protected] with any questions.
Quick Start