Checkline DT-207LR - Manual (Page 2)

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1.0 INTRODUCTION
The DT-205LR, DT-207LR, DT-205LR-12 abd DT-207LR-12 Hand-Held
Digital Tachometers are combination models designed for Contact as well as
Non-Contact operation. They employ a precise Optical Laser System that
permits measurement of RPM from up to 14 feet away when operating in the
Non-Contact mode and is supplied with a Screw-In Contact Adapter (p/n:
DT-ADP-200LR) for measuring RPM, Surface Speed & Length in the Contact
operating mode. 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 operating in the Non-Contact mode a small piece of reflective tape
must be affixed to the rotating shaft or other rotating element. Refer to
Operating Procedure
Non-Contact RPM Contact RPM Surface Speed & Length
CAUTION
!
Do not point the laser beam into eyes as permanent
damager could result .
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10.0 SPECIFICATIONS
Models DT-205LR (LCD version)
DT-207LR (LED version)
DT-205LR-12 (LCD version)
DT-207LR-12 (LED version)
Measuring Range Non-Contact: 6 to 99,999 rpm
Contact : 0.8 to 25,000 rpm
Accuracy 6 to 8,299 rpm: ±1 rpm
8,300 to 24,999 rpm: ±2 rpm
25,000 to 99,999 rpm: ±0.006% rpm
Display DT-205LR (LCD MODEL)
5 digit 0.47" (12mm) high LCD
DT-207LR (LED MODEL)
5 digit 0.4" (10mm) high LED
Measuring Units
per Minute Revolutions, Meters, Yards, Feet, Inches
Total Length Meters, Yards, Feet, Inches
Measuring Distance 14 feet (5.2 m) maximum
Detection Laser Diode, Class II
Memory 13 readings are stored in memory and
retained for 5 minutes (last, max., min.,
and 10 measurements)
Over-Range Indicator Flashing numerals
Update Time 1 second (typical)
Batteries 2 (1.5 V AA )
Battery Life DT-205LR: Approx 40 hrs
DT-207LR: Approx 25 hrs
DT-205LR-12: Approx 40 hrs
DT-207LR-12: Approx 25 hrs
Operating Temp 3 2° to 11 3° F (0 to 45° C)
Construction Die-cast aluminum housing
Weight 0.8 pounds (365 grams)
Dimensions 6.6" L x 2.4" W x 1.8" H
(167mm x 61mm x 45.7mm)
Warranty 1 year