461995 Datasheet, PDF (3/6 Pages) Extech Instruments Corporation. – Laser Photo / Contact Tachometer

Specifications
General Specifications
Circuit
Time base
Display
Laser light source
Detecting Distance
Memory
Operating Conditions
Power Supply
Power Consumption
Weight
Size
Accessories
Custom one-chip LSI microprocessor circuit
Quartz crystal 4.194 MHz
Reversible 5 digit 0.4" (10mm) LCD display
Less than 1mW; Class 2 red laser diode (645nm approx.)
2 to 79" (50 to 2000 mm) depending on ambient light and RPM
Last reading and MIN/MAX readings
32 °F to 122 °F (0 °C to 50 °C); RH 80% Max
4 x 1.5 V AA batteries
20mA DC approx.
10.6oz. (300g) including battery)
8.5 x 2.6 x 1.5" (210 x 67 x 38 mm)
(4)1.5V batteries, reflective tape 24" [600mm], surface
speed/rpm rotating attachments, and carrying case
Range Specifications
Range
Photo
10 to 99,999 rpm
Tachometer
Resolution
0.1 rpm (<1000rpm)
1 rpm (>1000 rpm)
Contact
0.5 to 19,999 rpm
Tachometer
0.1 rpm (<1000rpm)
1 rpm (>1000 rpm)
Surface
0.2 to 6560 ft/min 0.1 ft/min (<1000ft/min)
Speed
1 ft/min (>1000ft/min)
Surface
0.05 to 1999.9 m/min 0.01 m/min (<100m/min)
Speed
0.1 m/min (>100 m/min)
Accuracy (%rdg)
± (0.05% + 1d)
± (1% + 1d)
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461995 V1.3 7/02