General Specifications; Electrical Specifications - Extech Instruments LT10 User Manual

Specifications
General Specifications
Display
Display Polarity
Over range indication
Low Battery Indication
Measurement rate
Measurement Repeatability
MAX indication
Temperature coefficient
Photo detector
Sensor Calibration
Spectral response
Power supply
Auto Power Off
Operating conditions
Storage conditions
Dimensions
Weight
Electrical Specifications
Ranges and Resolution
LUX
200.0, 2000, 20000, 40000
Foot candles (Fc)
20.0, 200.0, 2000, 4000
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1999 Count Backlit LCD with LUX, fc, battery, and MAX indicators
Automatically detects polarity; displays (‐) for negative polarity
LCD displays 'OL'
Battery icon appears when battery voltage is below operating level
2.5 readings per second, nominal
±2%
Displays highest reading
o
±0.1% per C
Silicon photo‐diode with spectral response filter
Calibrated to standard incandescent lamp; color temperature 2856k
CIE photopic (CIE human eye response curve)
9V battery
Meter automatically switches off after 17 minutes of inactivity
Temperature: 0 to 40
Temperature: ‐10 to 60
157 (H) x 54 (W) x 34 (D) mm (6.2 x 2.1 x 1.3 ")
170 g (6 oz.)
Accuracy
± (5% reading + 10 digits (<10000 LUX/fc)
± (10% reading + 10 digits (>10000 LUX/fc)
Note that readings over 1999 will show the x10 or x100 multiplier.
In these cases, multiply the displayed value by the multiplier to
obtain the correct reading.
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