Extech Instruments LT250W, Руководство пользователя

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Specifications
7
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
Sensor Silicon photo-cell
Meter power Three (3) 1.5 V (AAA) batteries
Dimensions 6.4 x 2.2 x 1.1 in. (163 x 55 x 28 mm)
Weight 4.2 oz. (118 g)
7.2 Measurement Specifications
Accuracy specifications apply for the following conditions:
Temperature: 73.4 ℉ ± 9 ℉ (23 ℃ ± 5 ℃ ); Relative Humidity: ≦ 80 %
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)
Notes:
The total range is 0 to 199,900 Lux
Foot candle (Fc) readings are converted from Lux measurements
Readings above 9999 are accompanied by a x10 or x100 indicator
7.3 Environmental Specifications
For indoor use only
Altitude 6562 ft. (2000 m) maximum
Pollution degree 2
Operating conditions 32 to 104 ℉ (0 to 40 ℃ ); < 80% RH
Storage conditions -4 to 140
℉
(-20 to 60
℃
); < 75% RH
Drop-proof rating 3.3 ft. (1 m)
#NAS100076; r. AA/78957/78963; en-US 10