#ExtechInstruments

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Model: 461750 PartNumber: 461750 Extech 461750 PocketTach Mini Contact Tachometer, Large easy to read (99,999 count) LCD display, Autoranging with 0.1% basic accuracy, Hold button freezes displayed readings

A tachometer is a device that measures the angular speed of a rotating shaft in terms of revolutions per minute (RPM). The Extech 461750 Tachometer features surface wheels that measure contact surface speeds of rotating (10 to 9,999 RPM) and moving (3 to 6,560 ft./minute; 1 to 1999. 9 m/min) objects. Complete with 9V battery and surface wheels.

Key Features

Large easy to read (99,999 count) LCD display

Autoranging with 0.1% basic accuracy

Hold button freezes displayed readings

Ergonomically designed and pocket size housing with protective finger guard

Easy to operate by simply contacting the rotating object with the sensor tip and read

Surface wheels enable tachometer to measure linear surface speeds in ft/min, m/min, and yd/min

Specifications

Display Counts: 99,999 count LCD

Range rpm: 10 to 20,000rpm

ft/min: 3 to 6560ft/min

m/min: 1 to 1999.9m/min

yd/min: 1 to 5,000yd/min

Basic accuracy: (0.1%rdg +2d)

Sampling Time: 1sec>60rpm, >1sec>10 to 60rpm

Max rpm Resolution: 0.001

ft/min Resolution: 0.0001

Dimensions: 5.87" x 1.97" x 1.3" (149 x 50 x 33mm)

Weight: 5oz (142g)

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Model: HD450 PartNumber: HD450

Includes Windows software and USB cable (view larger).

Offering automatic datalogging, the Extech HD450 light meter automatically stores up to 16,000 readings or manually store/recall up to 99 readings. It features a large backlit LCD display with a 40-segment bar graph, has a wide range to 40,000Fc or 400,000 Lux, and reads cosine and color corrected measurements.

The HD450 utilizes precision silicon photo diode and the spectral response filter and has the handy backlight for readings in low light level areas. The peak mode (10S) captures the highest readings and the relative mode indicates the change in the light levels. This meter offers minimum/maximum reading, a data hold function that freezes the display, a heavy duty rugged double molded housing, and a light sensor with a 3-foot (1-meter) cable.

You can connect the HD450 to a Windows-powered PC via the included USB cable to download readings to the included software. The HD450 measures 6.7 x 3.1 x 1.6 inches (HxWxD), weighs 13.7 ounces, and is powered by a single 9-volt battery. It's backed by a three-year limited warranty.

What's in the Box

HD450 Datalogging Heavy Duty Light Meter, light sensor with 3-foot cable and protective cover, USB cable, Windows datalogging software, hard carrying case, 9-volt battery, operating instructions