Major tech MT950 User manual

INSTRUCTION MANUAL
MT950
NON-CONTACT TACHOMETER

Warning
To avoid injuries to animal or human eyes, please do not point the laser beam
in eyes or look directly into beam. If the instrument is not to be used for any
extended period, remove the battery.
Features
1. Provides fast and accurate non-contact RPM and surface speed
measurements of rotating objects.
2. Uses the CPU technique, photoelectrical technique, and junction laser
technique for one instrument combined PHOTO TACH. (RPM&REV)
3. Two test modes: rotate speed mode (unit: RPM) & count mode (unit:
REV)
4. Wide measure range and high resolution.
5. High visible digital LCD and Backlight display.
6. Built-in memory recalls Max Min and Last value stored.
Specifications
Display
5 digits LCD display
Accuracy
±(0.05% + 1 digits)
RPM Test Range
2 to 99,999 RPM
Count Range
1 to 99,999 REV
Resolution 0.1 RPM (2 to 999.9 RPM)
1 RPM. (over 1000 RPM)
Sampling Time
0.5 seconds (over 120 RPM)
Detecting Distance
50mm to 500mm
Time Base
Quartz crystal
Power Consumption
Approx. 45mA
Battery
9V or 6V Exterior DC
Operation Temp
0℃to 50℃

Dimension
160 x 58 x 39mm
Weight
151g
Measuring Manual
Apply a reflective mark to the object being measured. Hold down the MEAS
button and align the visible light beam with the applied target. Verify that
monitor indicator lights when the target aligns with the beam. The meter turns
on with the previously used mode. If you need to change the mode, release the
MEAS button and press the MODE button to change between RPM and REV.
Hold down MEAS to activate the new mode. The instrument auto powers off in
10 sec after releasing the MEAS button. Press the MEM button to recall the
last measurement readings for the Max, Min and Last value.
Measuring Considerations
1. Reflective Mark
•Cut the adhesive tap provide into approx. 12mm (0.5″) squares and
apply one square to each rotation shaft.
•The non-reflective area must always be greater than the reflective area.
•If the shaft is normally reflective, it must be covered with black tape or
black paint before attaching reflective tape
•Shaft surface must be clean and smooth before applying reflective tape.
2. Very Low RPM Measurement
•As it is easy to get high resolution and fast sampling time, if measuring
the very low RPM values, suggest user to attach more “REFLECTIVE
MARKS” averagely. Then divide the reading shown by the number of
“REFLECTIVE MARKS” averagely. Then divide the reading shown by the
number of “REFLECTIVE MARKS” to get the real RPM