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

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