Extech Instruments 461920, Руководство пользователя

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Specifications
6
6.1 General Specifications
Time base Quartz crystal
Display type 5 digit (99999) LCD
Laser type Class 2 laser ≤1 mW power @ 630 to 670 nm
Detection distance 2 to 20 in. (50 to 500 mm)
Sampling time 0.5 seconds (> 120 RPM)
Reflective tape Replacement part no. 461937
Memory Recall the MIN, MAX, and LAST readings for RPM
measurements
Recall the final count value for REV measurements
Operating conditions 32 to 122 ℉ (0 to 50 ℃ ); RH 80%, maximum
Power supply 9 V battery or optional AC Adaptor (part no. UA100-240)
Power consumption
45 mA DC; typical
Weight 5.3 oz. (151 g)
Dimensions 6.2 x 2.3 x 1.6 in. (160 x 60 x 42 mm)
6.2 Measurement Specifications
Range Resolution Accuracy
Tachometer 2 to 99, 999 RPM 0.1 RPM (< 1000
RPM)
1 RPM (> 1000
RPM)
± (0.05% of reading
+ 1 digit)
Counter
1 to 99,999 REV 1 count ± 1 count
#NAS100117; r. AA/86449/86449; en-US 6