Related Manuals for Extech Instruments LT250W
Summary of Contents for Extech Instruments LT250W
- Page 1 User Manual LT250W Light Meter Bluetooth ® Connectivity with the ExView ® Mobile App...
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Page 2: Table Of Contents
Table of contents Introduction................1 Safety ................2 FCC Compliance ..............3 Product Description ............4 Meter Description ............4 Function Buttons ............4 Display Symbols............5 Operation ................6 Powering the Meter ............. 6 Auto Power Off (APO)..........6 Taking Measurements ..........6 Changing Measurement Units ........7 Data Hold Function ............. -
Page 3: Introduction
Introduction Thank you for selecting the Extech LT250W Light Meter. This meter measures illuminance and displays it in Lux or foot candle units on the backlit LCD. Light is captured by the built-in domed photo-cell, situated at the top of the meter. -
Page 4: Safety
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. •... -
Page 5: Fcc Compliance
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. -
Page 6: Product Description
Product Description 4.1 Meter Description 1. Light sensor 2. Backlit LCD (detailed below) 3. Function buttons (detailed below) 4. Tripod mount 5. Battery compartment 4.2 Function Buttons Power / Bluetooth button Long press to switch the device on. Short press to switch off. With meter powered, long press to switch Bluetooth on/off. -
Page 7: Display Symbols
Product Description Unit of Measure button Short press to toggle Lux and foot candle (fc) units. Lux is the standard measurement unit, Foot candle readings are calculated. APO ON/OFF With the meter on, long press the power and H buttons to switch APO on/off. -
Page 8: Operation
Operation 5.1 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 bat- teries for proper orientation. -
Page 9: Changing Measurement Units
Operation CAUTION Do not touch or otherwise obstruct the sensor. Do not allow liquids to come in contact with the sensor. 5.4 Changing Measurement Units Short press the LUX / FC button to toggle the displayed unit of measure (Lux or foot candles). - Page 10 Operation 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 pre- vent the meter from automatically switching off while you are logging data or monitoring readings in real time on your smart device.
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Page 11: Maintenance
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. 6.1 General Cleaning Wipe the housing and sensor with a damp cloth as necessary to clean. Do not use abrasives or solvents to clean this device. -
Page 12: Specifications
Specifications 7.1 General Specifications Display 4 digit (9999) backlit multifunction LCD. Readings > 9999 are accompanied by a x10 or x100 indicator Over range indication OL is displayed when a measurement is out of range Low battery indication Battery symbol appears when batteries are low Reading update rate Two readings per second... -
Page 13: Connectivity Specifications
Specifications 7.4 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 #NAS100076; r. AA/78957/78963; en-US... -
Page 14: Two-Year Warranty
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 (a six- month limited warranty applies to sensors and cables). To view the full war- ranty text please visit: http://www.extech.com/support/warranties. - Page 16 User Manual last page 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.
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