![background image](http://html.mh-extra.com/html/extech-instruments/lt45/lt45_user-manual_2453049008.webp)
8 LT45-en-US_V2.1 6/20
Specifications
Sampling rate
2.5 times per second (digital display)
Display
6-digit LCD with battery icon, measurement overload, and
other function indicators
Sensor (detector)
Silicon photodiode with spectral response filter and cosine
correction
Ranges and Resolution
*Above 3999, the LCD uses
smaller digits on the right
side
Lux
Foot-candles
399.9
0.1
39.99
0.01
3999
1
399.9
0.1
*39999
10
3999
1
*399999
100
*39999
10
Auto-range
The meter automatically ranges the display
Accuracy
(1 Fc = 10.76 Lux)
LED light:
± (3% of r 3 digits) up to 500 Lux (46Fc)
± (3% of reading) above 500 Lux (46Fc)
Visible Light:
Calibrated to standard incandescent lamp 2856
o
K at an
ambient temperature of 23
o
C
± (6% of R 3 digits)
Angle deviation from cosine
characteristics
(Cosine Angular corrected
per JIS C 1609:1993 and CNS
5119 general A class)
30
±2%
60
±6%
80
±25%
LED Types
Meter measures white, red, yellow, green, and blue LED light
Operating conditions
Temperature: 41 to 104
o
F (5 to 40
o
C); Humidity: < 80% RH
Operation Altitude
Storage Temperature/RH
14 to 140
o
F (-10 to 60
o
C); Humidity: < 70% RH
Battery status indication
Battery symbol appears empty when battery voltage reaches critical level
Power supply
9V battery
Auto Power OFF
Meter powers down after 5 minutes of inactivity (can be defeated)
Dimensions
Meter:
38 x 55 x 130mm)
Sensor:
25 x 44 x 80mm)
Cable length:
1.5m)
Weight
Approx. 8.8 oz. (250g) with battery installed
www.
.com
1.800.561.8187