Instruction Manual
Model DT-107A
Handheld Contact
LED Digital Tachometer
Features
The Shimpo DT-107A is a battery operated, handheld,
microprocessor-controlled contact type tachometer. It
incorporates the latest micro-circuit technology and offers:
!
Multi-mode capability – measures RPM, FPM, YPM, mPM
and other units without special accessories
!
Large memory capacity
!
Wide speed range with automatic floating decimal point
!
C-MOS single chip microprocessor for high reliability and
low maintenance
!
Rugged construction - die-cast aluminum housing
NOTE: When using master wheel, accuracy can be affected
as much as 0.3% of reading.
CAUTION: Although tachometer alone is able to achieve
above ranges, the master wheel has a maximum speed limitation
of 5,000 FPM (for safety reasons).
MODEL
DT-107A
Display Range
0.10 to 25,000 rpm with floating decimal
Accuracy
±0.06 rpm: 0.10 to 999.99 rpm
± 0.6 rpm: 1,000.0 to 9,999.9 rpm
±0.006% of reading ±1 digit (or ±2rpm max.): 10,000 to 25,000 rpm
Display
5 digit 0.4" (10mm) high LED
Measuring Units
Revolutions: 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
System Control
Single chip C-MOS microprocessor
Over Range Indicator
Flashing numerals
Update Time
1 second (typical)
Batteries Included
Size: 2 AA 1.5V
Life: Approx. 40 hrs
Low Voltage Indicator
"B" display
Operating Temperature
32° to 113°F (0° to 45°C)
Construction
Die-cast aluminum housing
Weight
0.9 lb (400g)
Dimensions
7.3"L x 2.4"W x 1.8"H (185mm x 60mm x 45.7mm)
Warranty
1 year
STANDARD ACCESSORIES
2 cone adapters, 1 funnel adapter, 3-1/2" extension shaft,
carrying case and 1 master wheel (6" cir.)
Using the 6" master wheel and proper mode selector switch,
the following industrial units of measurement are achieved:
Range and Accuracy
Specifications
MODEL
DT-107A
R: REVOLUTIONS
SINGLE RANGE
ACCURACY
RESOLUTION
Contact RPM (rev./min.)
0.10 - 999.99
± 0.06
0.01
1,000.0 - 9,999.9
± 0.6
0.1
10,000 - 25,000
±0.006% of reading ±1digit
1
(or ±2 rpm max.)
Contact RPH (rev./hour)
6 - 99,999
±0.006% of reading ±1digit
1
(or ±6 rpm max.)
REV (total revolution)
0.1 - 9,999.9
± 0.1
0.1
10,000 - 99,999
± 1
1
F: FEET
SINGLE RANGE
ACCURACY
RESOLUTION
F/M (feet/min)
0.05 - 999.99
± 0.06
0.01
1,000.0 - 9,999.9
± 0.6
0.1
10,000 - 12,500
± 1
1
F/H (feet/hour)
3 - 99,999
±0.006% of reading ±1digit
1
(or ±6 FPH max.)
FT (length)
0.01 - 999.99
0.01
1,000.0 - 9,999.9
0.1
10,000 - 99,999
1
Y: YARDS
SINGLE RANGE
ACCURACY
RESOLUTION
Y/M (yards/min.)
0.02 - 999.99
± 0.06
0.01
1,000.0 - 4,167.0
± 0.3
0.1
Y/H (yards/hour)
1.0 - 9,999.9
±0.6
0.1
10,000 - 99,999
±0.006% of reading ±1digit
1
(or ±6 YPH max.)
YRd (length)
0.005 - 99.995
0.005
100.00 - 999.99
0.01
1,000.0 - 9,999.9
0.1
10,000 - 99,999
1
I: INCHES
SINGLE RANGE
ACCURACY
RESOLUTION
I/M (inches/min.)
0.6 - 9,999.9
±0.6
0.1
10,000 - 99,999
±0.006% of reading ±1digit
1
(or ±6 IPM max.)
IN (length)
0.1 - 9,999.9
0.1
10,000 - 99,999
1
m: METERS
SINGLE RANGE
ACCURACY
RESOLUTION
m/M (meters/min.)
0.02 - 999.99
± 0.06
0.01
1,000.0 - 3,810.0
± 0.3
0.1
m/H (meters/hour)
0.9 - 9,999.9
± 0.6
0.1
10,000 - 99,999
±0.006% of reading ±1digit
1
(or ±6 mPH max.)
m (length)
0.005 - 99.995
0.005
100.00 - 999.99
0.01
1,000.0 - 9,999.9
0.1
10,000 - 99,999
1
cm (length)
0.5 - 9,999.5
0.5
10,000 - 99,999
1
M: MILES
SINGLE RANGE
ACCURACY
RESOLUTION
M/H (miles/hour)
0.0006 - 9.9999
± 0.0006
0.0001
10.000 - 99.999
± 0.006
0.001
100.00 - 142.05
± 0.01
0.01
SHIMPO INSTRUMENTS
