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LT505-en-GB_V1.1   1/18 

Introduction 

Thank you for selecting the Extech Model LT505 LUX/FC Light Meter. The LT505 measures light 
from fluorescent, metal halide, high-pressure sodium and incandescent sources in lux and foot-
candles. This device is shipped fully tested and calibrated and, with proper use, will provide years 
of reliable service.

Features 

 

Measure intensity of light (illuminance) in lux or foot-candles

 

 

Light sensor with cosine correction

 

 

Low battery indicator

 

 

Data hold

 

 

Auto-ranging

 

 

Auto Power OFF (APO)

 

 

Light weight, compact, design

 

Safety 

Please read the entire User Manual before operating this device. Use the meter only as specified 
and do not attempt to service or open the meter housing.  

 

Do not use the meter in the presence of explosive gas or vapor 

 

Do not expose the meter to extremes in temperature or to high humidity 

 

Please dispose of batteries and meter responsibly and in accordance with all applicable 
laws and regulations 

 

Do not allow children to handle the meter or the protective cover

 

Meter and LCD Description 

 
1.

 

Light Sensor (protective sensor cover not shown) 

2.

 

LCD  

3.

 

LUX-FC button 

4.

 

CAL-ZERO button 

5.

 

Power button 

6.

 

Data Hold button 

7.

 

MAX-MIN Record button 

Note: Battery compartment and Tripod mount on rear of 

meter  

 

 

 

 

www.

GlobalTestSupply

.com

Find Quality Products Online at:

[email protected]

Summary of Contents for LT505

Page 1: ...USER MANUAL LUX FC Light Meter Model LT505 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 2: ...entire User Manual before operating this device Use the meter only as specified and do not attempt to service or open the meter housing Do not use the meter in the presence of explosive gas or vapor D...

Page 3: ...appear in the secondary display 4 The CAL icon will switch OFF when the calibration has been completed 5 If the protective cap is not covering the sensor when the button is pressed the LCD display wil...

Page 4: ...press the button The MAX AVG MIN display icons will switch off and the meter will return to normal operating mode Auto Power OFF APO In order to conserve battery life the meter will automatically shut...

Page 5: ...ve the battery and store separately Never dispose of used batteries or rechargeable batteries in household waste As consumers users are legally required to take used batteries to appropriate collectio...

Page 6: ...ter Power 2 x 1 5V AAA batteries Low battery indicator included Automatic power off After approx 12 minutes of inactivity Operating Temp Humidity 5 C to 40 C 40 F to 104 F 80 RH Max Operating Altitude...

Page 7: ...tions 23 5 C Lux autorange Unit Range Resolution Accuracy Lux 999 9 0 1 3 rdg 3 dgts 9 999 1 3 rdg 10 dgts 99 990 10 400 000 100 Foot candle autorange Unit Range Resolution Accuracy fc 99 99 0 01 3 rd...

Page 8: ...om Dining Table 750 1 500 75 150 Clerical Work 750 1 500 75 150 Show Window 1 500 2 000 150 2000 Typing Drafting Store Hospital 75 150 7 15 Indoors 30 75 3 7 Emergency Stairs 150 200 15 20 Corridor St...

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