Introduction; Specifications; General Specifications; Range Specifications - Extech Instruments 461893 User Manual

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Introduction

Congratulations on your purchase of the Extech 461893 Photo Tachometer. This device provides
non-contact measurements over a wide range (5 to 100,000 RPM). A reflective mark on the object
to be measured is used as a target for the meter's integral light beam. Careful use of this meter will
provide years of reliable service.

Specifications

General Specifications

Meter circuitry
Time base
Display
Measurement
Range select
Data Recording
Sampling time
Target distance
Operating Temperature
Power Supply
Power Consumption
Weight
Size
Accessories

Range Specifications

Measurement Range
RPM 5 to 999.9 RPM
1,000 to 99,999 RPM
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Custom one-chip LSI microprocessor
Quartz crystal
5-digit (99999 count) 0.4" (10mm) multi-function LCD
5 to 99,999 RPM in 2 ranges
Automatic
LAST / MIN / MAX readings stored for later recall
1 second (over 60 rpm)
2 to 6" (50 to 150mm) depending on ambient light
32°F to 122°F (0°C to 50°C)
4 x 1.5V 'AA' batteries
Approximately 150 mA
8.8 oz. (250 g) including battery
6.7 x 2.8 x1.5" (170 x 72 x 37mm)
Reflective tape (23") and carrying case
Resolution
0.1 RPM
1 RPM
2
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Accuracy
+(0.05% + 1 digit)
+(0.05% + 1 digit)
461893-EN V1.4 8/13
information@itm.com