Checkline DT-107A - Manual (Page 2)

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1.0 INTRODUCTION
The DT-105A, DT-107A DT-105A-12 and DT-1807A-12 Hand-Held Digital
Tachometers are designed to accurately measure rotation speeds, surface speeds
and length. The rotational speed is displayed in RPM units (Revolutions per
minute) while the surface speed and length can be displayed in a variety of
user-selected engineering units.
When measuring RPM, the user will mount the Cone Tip Adapter or Funnel Ti p
Adapter to the end of the shaft and place in contact with the rotating shaft or
element. When measuring surface speed or length, the 6 inch circumference
(1.9" diameter) is fitted to the end of the shaft and placed in contact with the
moving surface.
Applications
Surface Speed & Length RPM Measurement
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9.0 SPECIFICATIONS
Display Range 0.10 to 25,000 rpm with floating decimal
Accuracy 0.10 to 999.99 rpm: ±0.06 rpm
1,000.0 to 9,999.9 rpm: ±0.6 rpm
10,000 to 25,000 rpm: ±0.006% rpm
Measurement Units
per Minut e Revolutions, Meters, Yards, Feet, Inches
per Hour Feet, Yards, Miles, Meters, Revolutions
Total Revolutions, Centimeters, Meters, Yards,
Feet, Inches
per Second Revolutions, Inches, Feet, Yards,
Centimeters (optional, inquire)
Memory System 13 readings are stored in memory and
retained for 5 minutes (last, max., min.,
and 10 measurements)
Over-Range Indicator Flashing numerals
Detection Optical coupler, 60 pulses/rev
Update Time 1 second (typical)
Batteries Size: 2 1.5 V AA
Life: Approx. 65 hrs. (DT-105A)
Life: Approx. 40 hrs. (DT-107A)
Low Voltage Indicator Flashing “LO BAT” display (DT-105A)
“B” display (DT-107A)
Operating Temperature 32 to 11 3° F (0 to 45° C)
Weight 0.9 pounds (400 grams)
Dimensions 7.3" L x 2.4" W x 1.8" H
(185.4 x 60.0 x 45.7mm)
Warranty 1 year