The Series DT-100A Tachometer with micro-
processor technology has heralded a superior
standard in tachometer accuracy and capabili-
ties for measuring and recording speeds of ro-
tational, linear and surface plus total length. Of-
fering unprecedented confidence, the DT-100A battery-operated
tachometers feature the same rugged, high quality components
that have made them the benchmark in the industry. These user-
friendly, value-packed units feature memory storage; quick ad-
justment units knob; length functions; retrieval of last, maximum
and minimum values; plus each unit comes standard with a free
N.I.S.T. certificate. Units are available with an LCD or vibrant red
LED display.
Incorporating the precise technology and user-friendly func-
tions as the DT-100A, the DT-100A-S12 provides an excep-
tional accuracy in measuring speed and length via its 12”
wheel. The larger wheel rotates more slowly than a standard 6”
wheel, enabling reliable and safe registration of high speeds.
DT-100A Contact Tachometers
Features
• Outstanding accuracy allows usage in the strictest applications
• Exceptionally rugged die-cast aluminum housing enables usage in the harshest conditions
• Wide field selection of units in both instantaneous rate as well as totalized length satisfies a multitude
of user requirements
• Large 5 digit display aids user visibility
• Expansive 10 measurement memory capacity allows quick retrieval of stored data plus additional last,
max. & min. values
• Long-life battery (25-40 hrs. continuous use) eliminates concerns of being down during testing
• Compact, ergonomic design allows easy grip
• Rear threaded inserts provides option to mount to stand or other device
• Available display options of either LCD or vibrant, bright red LED
• CE Mark combined with free N.I.S.T. certificate provides peace of mind due to the quality of the instrument
DT-105A
DT-107A
Standard
DT-100A in
Supplied
Case
Optional
DT105A-S12
with 12”
Circle Wheel
DT105A
Shown with
Included 6”
Circle Wheel
D
T- 1
05
A
DT-107A
DT-100A Specifications
CONE 1/2 inch cone adapter
CONE-3/4 3/4 inch cone adapter
CONE-1-1/4 1-1/4 inch cone adapter
DT-CARRY100 Carrying case for handheld tachometers
EXT-SHAFT 3.5 inch extension shaft for handheld
tachometers
FPM-12 12 inch circumference measuring wheel
FPM-6 6 inch circumference measuring wheel
FPM-6-GV 6 inch circumference grooved measuring
wheel
FUNNEL 1/2 inch funnel adapter
NIST-TACH NIST traceable certificate with data
DISTRIBUTED BY:
Display Range 0.10 - 25,000RPM with floating decimal
Accuracy
±0.06 rpm: 0.10 - 999.9 rpm; ±0.6
rpm: 1,000.0 - 9,999.9 rpm; ±0.006% of
reading ±1 digit (±2 rpm max.) 25,000
rpm
Display
DT-105A: 5 digit 0.47” (12 mm) high
LED; DT-107A: 5 digit 0.4” (10 mm)
high LED
Measuring Units
Revolution: RPH, RPM; Feet: FPH,
FPM; Miles: MPH; Yards: YPH, YPM;
Inches: IPM; Meters: mPH, mPM;
Length: m, cm, inches, feet, yards; Total
Revolutions: REV
Memory System
13 readings are stored in memory and
retained for 5 minutes (last, max., min.,
and 10 extra measurements)
Detection Optical coupler, 60 pulses/rev.
Update Time 1 second (typical)
Over Range Indicator Flashing numerals
Power Requirement 2 AA 1.5V batteries (Life: Approx.
DT-105A: 65 hrs.; DT-107A: 40 hrs.)
Operating Temperature 32º - 113ºF (0º - 45ºC)
Construction Die-cast aluminum housing
Product Weight 0.9 lb (400 g)
Package Weight Approx. 2 lb (.91 kg)
Approvals CE
Dimensions 7.2” L x 2.4” W x 1.8”H
(182.5 mm x 60 mm x 46 mm)
Warranty 2-Year
Included Accessories
2 cone adapters, funnel adapter, 3½”
extension shaft, carrying case, NIST
certificate, master wheel (6” cir.)
Options
-S12 Option: Same as DT-100A except
6” circumference wheel replaced with
12” circumference contact wheel
Accessories
DT-105A
LCD Contact Tachometer with included
6” contact wheel. Includes NIST
certificate.
DT-105A-S12
LCD Contact Tachometer with included
12” contact wheel. Includes NIST
certificate.
DT-107A
LED Contact Tachometer with laser
sensor and contact adapter for use with
included 6” contact wheel. Includes NIST
certificate.
DT-107A-S12
LED Contact Tachometer with included
12” contact wheel. Includes NIST
certificate.
Ordering Details
Optional Accessories
(2) Cone Tips 1/2” Funnel Tip
Extension Shaft (3 1/2”)
Carrying Case
FPM-6 (ft./min, 6” cir.)
FPM-12 (ft./min) 12” circle
Included Accessories
FPM-6-GV (6” circle grooved wheel)
