Shimpo DT-107A-S12, DT-107A, DT-105A-12CBL, DT-107A-12KMW, DT-105A-12KMW Instruction Manual
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DT-100A-S12 Tachometer
Operation Manual
• When using the 6” wheel, do not use the extension shaft - the wheel
may fly off the shaft and cause damage.
• Although the tachometer alone is able to achieve the higher ranges
listed in the Range and Accuracy table on page 3, the wheel attachment has a maximum speed limitation of 5,000 FPM (for safety
reasons).
DT-105A
The Series DT-100A Tachometer with microprocessor technology
has heralded a superior standard in tachometer accuracy and capabilities for measuring and recording speeds of rotational, linear and
surface plus total length. Offering 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 adjustment 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 functions as
the DT-100A, the DT-100A-S12 provides an exceptional 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-107A
SPECIFICATIONS
Display Range: 0.10 - 25,000 RPM 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 (0.91 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” ex-
tension shaft, carrying case, NIST certificate, master wheel (12” cir.)
SURFACE SPEED METRIC CONVERSION
Conversions such as YPM to mPM or mPM to YPM may be obtained from the memory only by switching from one mode to an-
other.
OPERATION
1. Place adapter or wheel on shaft (as shown).
MEMORY RECALL
Automatic Memory
The following are automatically stored in memory for 5 minutes
following release of the power switch:
• Last reading
• Maximum reading
• Minimum reading
DT-105A:
CAUTION: Do not attach master speed wheel on extension shaft.
The wheel may slip off during measurement.
2. Turn selector switch to desired unit.
3. After attaching proper adapter or wheel, bring it into contact
with rotating object or moving surface whose speed is to be measured. Apply only enough pressure to eliminate slip. The selected
function will be shown “blinking” above the display digits.
DT-107A
To fill all three memory spaces, unit must operate for about 5 seconds. If any of the above memory readings are missing, unit must
operate a few seconds longer.
Memory Selection
The DT-100A has the capability of storing 10 extra readings in its
memory. These readings can be obtained from the same machine
or many machines (up to 10) by pressing the memory switch momentarily as the reading you wish stored appears on the display.
An “M” with an integer will appear on the top of the display momentarily, and will be stored in memory. Up to 10 readings can
be stored.
NOTE: All memory data will be erased if automatic shut-off has
occurred. To recall a specific reading, press the memory switch
until the desired reading shows up on the display along with its
memory position. To erase all data from the memory, press the
memory switch for at least 5 seconds until display shows CCCCC.
If you hold the memory switch, the display will continue to show
CCCCC until the switch is released, then will default to 0.00.
4. Press and hold the on-off switch. Display will update approximately every second.
5. Observe speed for as long as it is desired.
6. On-off switch must be released prior to removal of tachometer
from rotating object if last reading must be captured.
7. After release of power switch, the last reading will be displayed
for approximately 5 minutes. Readings will be retained in memory
for 5 minutes and can be extended any number of additional 5
minute periods by re-pressing the memory switch.
2
BATTERY REPLACEMENT
Low battery voltage is indicated by LO BAT on the display. Remove end cover by using a coin or appropriate screwdriver and
replace both batteries. Please note polarity.
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