Major tech MT952 Manuale utente

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

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

Indice

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