Ludlum Measurements 48-4203, Руководство пользователя

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62 CHAPTER 9. SPECIFICATIONS
Ambient Light Sensor: automatically turns on backlight and varies status LED intensity
Response Time: programmable to fixed (1-60 seconds), fixed fast (4 seconds), fixed slow (22
seconds), auto fast, or auto slow
Table 9.2: Auto Response Times (in seconds)
Test Auto Fast Auto Slow
Background to > 30 kcpm <3 <6
>30 kcpm → Background <3 <6
Background to
≤
30 kcpm 4 7
≤ 30 kcpm → Background 5.5 12
Background to ≤ 12 kcpm 6 12
≤
12 kcpm
→
Background 8.5 17
Background to
≤
6 kcpm 7.5 18.5
≤ 6 kcpm → Background 9 21
Background to ≤ 4020 cpm 11 20
≤
4.02 kcpm
→
Background 10 22
Background to
≤
3000 cpm 10 22
≤ 3 kcpm → Background 11 22
Average time of 10-90% measurements.
Real-time Streaming Rate: 1/16th to 15 seconds (1/16th second resolution)
Real-time Streaming Parameters: 8
Warm-up Time: less than 2 minutes
Power: two alkaline or rechargeable "AAA" batteries (does not support in-device charging)
Battery Life: approximately 100 hours of operation, 24-hour low-battery warning
Temperature Range: -20 to 50 °C (-4 to 122 °F), may be certified for operation from -40 to 65
°C (-40 to 150 °F)
Environmental Rating: NEMA (National Electrical Manufacturers Association) rating of 3x
or IP (Ingress Protection) rating of 52 with audio seal option
Size: 8.5 x 8 x 4.7 cm (3.45 x 3.1 x 1.9 in.) instrument only
Weight: 174 g (0.38 lb) instrument only, including batteries
Construction: high-impact plastic with water-resistant rubber seals and separate battery
compartment
Ludlum Measurements, Inc.