Extech 461891 High Precision Contact Tachometer with NIST

Item #:

EXT-461891-NIST

Brand:

Extech

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461891 High Precision Contact Tachometer with NIST by Extech

Large 5 digit LCD display is easy to read
Built-in memory recalls last MAX/MIN value stored
Autoranging with 0.05% accuracy
Contact measurements from 0.5 to 19,999rpm plus linear surface speed measures in ft/min or m/min
Simply contact rotating object with sensor tip and read
Accessory wheels enable tachometer to measure linear surface speeds
Complete with cone tip, flat tip and spare wheel for surface speed measurements, four 1.5V AA batteries and case

General Specifications

Circuit	Custom one-chip LSI microprocessor circuit
Time base	Quartz crystal
Display	5-digit multi function LCD display
Measurement	Rotation Speed 0.5 to 19,999 rpm Surface Speed 0.2 to 6560 ft/min. 0.05 to 1999.9 m/min
Memory	Last and Max/Min readings
Sampling Time	1 second
Operating Temperature/RH	32 °F to 122 °F (0 °C to 50 °C) / <80% RH
Power Supply	4 x 1.5V AA batteries
Power Consumption	Approx. 10 mA
Weight	0.62 lb (280 g) including batteries
Dimensions	8.2 x 2.8 x1.5" (208 x 72 x 37 mm)
Accessories	Cone rpm adaptor, funnel rpm adaptor, surface speed test wheel, and carrying case

Range Specifications

Measurement	Range	Resolution	Accuracy
RPM	0.5 to 19,999 rpm	0.1 rpm (0.5 to 999.9 rpm) 1 rpm (over 1000 rpm)	+ (0.05% rdg +1d) @ 23+ 5°C
ft/min	0.2 to 6560 ft/min	0.1 ft/min (0.2 to 999.9 ft/min) 1 ft/min (over 1000 ft/min)	± (1% rdg + 1 digit)
m/min	0.05 to 1999.9 m/min	0.01 m/min (0.05 to 99.99 m/min) 0.1 m/min (over 100 m/min)	± (1% rdg + 1 digit)