© Copyright 2016 General Technologies Corp.
General Technologies Corp.
#121 - 7350 72nd Street Tel.: (604) 952-6699
Delta, BC
Fax: (604) 952-6690
Canada V4G 1H9
www.gtc.ca
4.2 Display Description
4.3 Measurement Procedures
Use of controls or adjustments or performance
of procedures other than those specified herein
may result in hazardous radiation exposure.
4.3.1 RPM Measurement
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CAUTION
•
Apply a piece of reflective tape to the rotating object to be measured
.
•
Slide the function switch to the “RPM” position
•
Press the Measurement button and aim the laser beam at the
reflective mark or tape on the rotating object.
•
Verify that the on target indicator appears on the display to
confirm the instrument is detecting the rotation of the object and
the reflective mark on it.
•
Proceed to read the RPM on the digital display.
4.3.2 TOT (total revolutions) Measurement
•
Apply a piece of reflective tape to the rotating object to be measured
.
•
Slide the function switch to the “TOT” position
•
Press the Measurement button and aim the laser beam at the
reflective mark or tape on the rotating object.
•
Verify that the on target indicator appears on the display to
confirm the instrument is detecting the rotation of the object and
the reflective mark on it.
•
Proceed to read the total revolutions on the digital display.
4.3.3 Reflective marks
•
Cut a 1/2” (1.25 cm) length of the reflective tape provided, peel off
the backing to expose the adhesive, and attach it to the rotating
part or shaft to be measured, following these recommendations:
- The non-reflective area must be larger than the reflective piece of tape.
- If the object or shaft to be measure is reflective, first covered it with
a matte tape or paint it black before attaching the reflective tape.
- Before applying the tape ensure that the surface is clean and smooth.
4.3.4 Very low RPM measurements
To measure slowly rotating parts, it may be advantageous to
follow the procedure below to increase the update rate of the
measurement:
• Depending on the size of the rotating object or shaft, attach
multiple reflective marks, evenly spaced along its circumference.
•
Proceed to measure RPM as described in 4.3.1, and divide the
reading by the number of reflective marks, in order to obtain the
correct RPM.
4.4 Other Functions
4.4.1 Display Hold
•
The instrument will automatically hold the last measurement
immediately after the on target indicator on the display turns off,
while the Measurement button is pressed.
4.4.2 MEM function
In every measuring cycle (pressing the Measurement button,
obtaining a reading, and then releasing the button), the instrument
will automatically store in its internal memory the maximum,
minimum and last value. To retrieve the values in memory follow
the procedure described below:
• With the instrument off press and hold down the MEM button
to display the maximum value stored in memory. The display
will alternate screen between ‘UP’ (maximum) and the stored
maximum reading. Note the value and release the MEM button.
• Pressing and holding again the MEM button will display the
minimum value stored in memory. The display will alternate
screen between ‘dn’ (minimum) and the stored minimum reading.
Note the value and release the MEM button.
• Pressing and holding once again the MEM button will display the
last reading value stored in memory. The display will alternate
screen between ‘LA’ (Last reading) and the stored last reading
value. Note the value and release the MEM button.
• This memory retrieve cycle will keep repeating in the order
detailed above.
Notes: The values stored in memory will be retained until a new
measurement cycle is performed.
Removing the batteries, or low batteries will cause all
values stored in memory to be erased.
5. MAINTENANCE
In order to avoid laser radiation exposure
when removing or replacing the battery
always make sure the laser aperture is
pointing away from any person, animal, or reflective surface.
5.1 Battery Replacement
• When the battery is low and needs to be replaced, the ‘Low
battery warning’ symbol will appear on the lower left hand side of
the display.
• To replace the battery, remove the screw and open the battery
compartment cover (located at the back of the unit), and remove
the batteries.
• Replace with 4 x 1.5 V type AA/UM3 or equivalent observing the
proper polarity of each battery as indicated at the bottom of the
battery compartment.
• Close the battery cover, and replace the screw.
5.2 Cleaning
In order to avoid laser radiation exposure,
remove the battery before performing any
cleaning of the lens or exterior of the instrument.
5.2.1 Lens Cleaning
Debris or dirt on the lens may cause obstruction and reduce the
accuracy of the tachometer. If this occurs, either wipe the lens
with a cotton swab (moistened with water only) or blow the loose
particles off with clean compressed air. Do not use solvents on the
lenses, as they may damage the instrument.
5.2.2 Exterior Cleaning
Periodically wipe the enclosure with a soft damp cloth and mild
household cleanser. Do not use abrasives or solvents. Ensure that
no water gets inside the instrument to prevent possible short circuits
and damage.
6. WARRANTY
One year limited warranty, excluding batteries and fuses. For
details see Standard Warranty Information on our web page or
request a printed copy.
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CAUTION
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CAUTION
