Major tech MT952 User manual

INSTRUCTION MANUAL
MT952
CONTACT & NON-CONTACT
TACHOMETER

1. Warnings
To avoid injuries to animal or human eyes, 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.
NOTE:
•If the battery current is weak, you will view the “BAT” on the
LCD when you press “MEM” button to measure.
•Be careful not to allow any liquids or moisture to get inside the
tachometer.
2. Features
•Provides fast and accurate contact and non-contact RPM and
surface speed measurements of rotating objects
•Measurement type
oRotation Speed (RPM)
oTotal revolutions (REV)
oFrequency (HZ)
oSurface Speed (M/M, I/M, F/M, Y/M)
oLength (M, In, F T, Yd)
•Wide measure range and high resolution
•High visible digital LCD and Backlight display
•40 reading memories
o10 selectable MAX measurements
o10 selectable MIN measurements
o10 selectable AVG measurements
o10 selectable DATA measurements
•Laser sighting

3. Specifications
Display
5 digits LCD display
Accuracy
±(0.05% + 1 digits)
Contact Test range
2 to 20,000RPM
Non-Contact Test range
2 to 99,999RPM
Tot test range
1 to 99,999
Resolution 0.1 RPM (2 to 9999.9 RPM)
1 RPM (over 10000 RPM)
Sampling time
0.5 seconds (over 120 RPM)
Detecting distance
50mm to 500mm
Time base
Quartz crystal
Power consumption
Approx. 45mA
Battery
9V
Operation temp
0°C to 50°C (32°C to 122°C)
4. Operation
Open the battery compartment cover and install a 9V Battery.
Non-Contact
Stick the self-adhesive reflective tape on the object whose rotational
speed is to be measured. The reflective tape should be stuck as close
to the outer edge of the object to be measured as possible.
Contact
Attach the contact adapter to the tachometer. Select the adapter
included and slides it onto the shaft of the contact adapter. Align the
adapter with the alignment pin on the shaft of the contact adapter.
•Press the MEAS button. Point the laser spot at the object or
bring the contact probe to the object. Then read the
measurement on the LCD display.

5. Function Description
In scan mode, the current measurement is displayed on the main
display. The main display will hold the last values until the meter
automatically turns off.
Data Storage
Press the MEAS button until the reading displays on the LCD display.
Observe the reading and press the “MEM” Button to record. The
maximum, minimum, average and data during one shot
measurement will be stored into a memory set. Then the Data
number will increase by one.
Recall Data
Use the MEM button to scroll and view the stored data. Press the
“MEM” button once to scroll between the saved MAX, MIN, AVG and
DATA measurements. Hold down the “MEM” button to leap to next
Data Set. On the display it will read Data0 to Data9 (10 selectable
Data measurements).

Measurement Mode Switch:
Release the MEAS button and press the MODE button. There are
two group of measurement options. Press the MODE button to
change from RPM to RPM to HZ. Press the MODE button and hold
for approx.3 sec to leap to the next group. Then, press the MODE
button once to change from REV to Mto In. Select the mode by
holding down the MEAS button and start measuring.
•RPM: Non-Contact revolutions per minute measurements.
•RPM: Contact revolutions per minute measurements.
•Non-Contact /Contact frequency measurements.
•M/M: Contact Meter per minute measurements.
•I/M: Contact Inch per minute measurements.
•F/M: Contact Feet per minute measurements.

•Y/M: Contact Yard per minute measurements.
•REV: Revolution measurements.
•M: Length measurements in the unit of meter. (Using the
master 10cm circumference wheel.)
•In: Length measurements in the unit of inch. (Using the master
10cm circumference wheel.)
•FT: Length measurements in the unit of feet. (Using the master
10cm circumference wheel.)
•Yd: Length measurements in the unit of yard. (Using the
master 10cm circumference wheel.)
6. Measuring Consideration
1. Reflective mark
•Cut the adhesive tape 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