Omega HHT-1501, HHT-1500 User Manual
TABLE OF CONTENTS
1. SPECIFICATIONS ...................................................................................... 1
2. PANEL FUNCTIONS................................................................................... 2
3. OPERATING INSTRUCTION..................................................................... 4
3.1. Normal Operation................................................................................... 5
3.2. Using the Mechanical Adaptor (Option RM1502)................................ 6
3.3. Measurement of Surface Speed(m/min, ft/min, or yd/min)................. 7
3.4. Use as an Event Counter with External Light Source.......................... 8
3.5. Use as an Event Counter with Internal Red LED................................. 8
3.6. External Signal(TTL) Input (RM1501) ................................................... 9
3.7. Digital Pulse Signal Output (RM1501) ................................................. 9
3.8. Measuring Slow Rotating Objects........................................................ 10
3.9. Using the MAX/MIN/AVE Function...................................................... 10
3.10. Turning On/Off Tachometer............................................................... 11
3.11. Disable Auto-Power-Off Function ...................................................... 11
3.12. REPLACING THE BATTERIES....................................................... 12
4. Protocol of RS-232C Serial Interface (RM-1501) ..................................... 13
5. Installation of WindowTM Application Software (RM-1501) ........................ 14
6. Description of WindowsTM Application Program (RM-1501) ..................... 15
1. SPECIFICATIONS
Speed (Non-contact):
Range Resolution Accuracy
RPM 10.00 - 99999 0.01/0.1/1 0.04% ±2 dgts
rps(Hz) 0.200 - 2000.0 0.001/0.01/0.1 0.04% ±2 dgts
Speed (Contact)
Range Resolution Accuracy
RPM / (/
20.00 - 29999 0.01/0.1/1 0.04% ±2 dgts
symoblizes
"Contact"
m/min 2.000 - 2999.9 0.001/0.01/0.1 0.04% ±2 dgts
ft/min 6.00 - 10000 0.01/0.1/1 0.04% ±2 dgts
yard/min 4.00 - 3000 0.01/0.1/1 0.04% ±2 dgts
Event Counter:
Range Max. Input Frequency
0 - 99999 10KHz. with 5% duty cycle
External TTL Input High > 4.5V (RM1501)
Display: 5 digits 99999 counts
Sampling Rate: 0.7 second (> 60 rpm)
> 1 second (10 to 60 rpm)
Measuring Distance: 50 to 300 mm
Time Base: 4.0 MHz Quartz Crystal
Range Selection: Automatic
Battery: Four 1.5V batteries (AA, UM-3)
Power Consumption: 1.5mA (Idle)
5mA (1000.0 - 99999 rpm)
25mA (10.00 - 999.99 rpm)
25mA (Max, Min or Ave Enabled)
25mA (Event Counter)
Auto-Power-Off: 30 minutes.
Operating Temp. 0 to 50°C (32 to 122 °F)
Size: 172 mm x 63 mm x 36 mm (6.8" x 2.5" x 1.5")
Weight: 190 g(6.7 oz.) (including battery)
Accessories: Carrying case x 1, Reflective tape x 1,
Instruction Manual x 1
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2. PANEL FUNCTIONS
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2.1. Reflecting tape
Attach a reflecting tape to the surface of the unit to be measured
2.2. Reflecting signal light beam
It is recommenced that the reflecting surface is perpendicular to the
emitting/receiving unit for best measurement.
2.3. Emitting/Receiving Unit
The red light emits from the left side of the tachometer. And a receiving
sensor is installed in the right side to receive light signal from the reflecting
surface.
2.4. LCD
The lower row of the LCD is a 5 digit number to display RPM, m/min,
ft/min, yd/min or counts.
The upper row of the LCD is a clock. If only the minutes is displayed,
tachometer is in the auto-power off mode. Power will be turned off in 30
minutes. To disable auto-power-off mode, press and hold the unit button
(left button) for 2 seconds. Then the hours will be displayed.
2.5. Function Button
Press the bu tton to select MAX, MIN or AVE function. To return to normal
mode, press and hold the button for 2 seconds.
2.6. Start/Hold/On/Off
When the power is turned off, press this button to turn the power on. If the
power is on, press this button to start measurement. Press again to hold
the data and stop measurement. To turn the power off, press and hold
button until "OFF" is displayed in the LCD (about 2 seconds). Release the
button, then the power will be turned off.
2.7. Unit Button
Press this button to select different units, such as RPM, RPM / ( /
Symbolizes "contact"), m/min, ft/min, yd/min, rps (Hz) or No. of counts. To
measurement speed in RPM /, m/min, ft/min or yd/min, the option RM1502
mechanical adaptor must be attached.
When the No. symbol is displayed in the LCD, the unit becomes an event
counter. The clock will be reset to zero, and start counting. To stop
counting, press the HOLD (START) button once. To reset counts, press
the function button(right button).
2.8. MAX/MIN/AVE symbols
Symbols to indicate which of MAX, MIN or AVE function is enabled.
2.9. Low battery warning
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2.10. Start Measurement Symbol
2.11. Hours:Minutes Clock
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3. OPERATING INSTRUCTION
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