General Technologies TA105 Laser Tachometer - Manual

1. SAFETY RULES
• This Instrument is designed for indoor use at temperatures
between 32°F to 122°F (0°C to 50°C), altitudes up to 6500 ft.
(2,000 m), and 10% to 90% relative humidity.
• To ensure that the instrument is used safely, follow all safety and
operating instructions in this manual. If the instrument is not used
as described in this operation manual, the safety features of this
device might be impaired.
• To avoid personal injuries and damage to the instrument use
extreme caution when working around hot or moving objects or
machinery like: radiators, exhaust manifolds, catalytic converters,
drive belts, fly wheels, etc.
2. INTERNATIONAL SYMBOLS
Important information
Refer to the User’s Manual
CAUTION: Laser Radiation
AVOID DIRECT EYE EXPOSURE
1mW Output at 630-670 nm
Class II Laser Product
3. TECHNICAL SPECIFICATIONS
3.1 General Specifications
Display: 5 digits 0.7” (16mm) LCD, Max. of
99999 display, with measuring unit in-
dicator and Laser On Target indicator
Resolution: ±(0.05%+1 Digit)
Operating Temperature: 32°F to 122°F (0°C to 50°C)
Response time:
0.5 sec. (over 120 RPM)
Range Selection: Auto Ranging
Memory: Max. Value, Min. Value and Last
Value stored automatically in memory
Distance to target: 2” to 20” (50 mm to 500 mm)
Laser Pointer: Laser Diode, < 1mW output
wavelength 630-670 nm, Class II
Power Source: 4 x 1.5 V type AA/UM3 or equivalent
Battery life: Approx. 5 hours.(w/alkaline batteries)
Dimensions: 6.3”x 2.8”x 1.5” (160 x 72x 37 mm)
Weight: 6.96 oz. (200 g) with battery.
Accesories: Soft Pouch, 23.5” (600 mm) long reflec-
tive tape,4 x 1.5 V alkaline battery, and
User’s Manual
3.2 Measurement Specifications
• Accuracies are ±(% of reading + number of least significant dig-
its) at 23°C ±5°C ambient temperature, with less than 75% RH.
4. OPERATION
4.1 Instrument Description
1) Laser output
2) Laser warning symbol
3) Measurement button
4) Function switch
5) Memory button
6) Digital display
7) Battery compartment cover
Function Range Acuracy Resolution
RPM
2.5 to 999.9 RPM
±(0.05%+1 Digit)
0.1 RPM
1000 to 99,999 RPM 1 RPM
TOT
(total revolutions)
1 to 99,999 RPM ±(0.05%+1 Digit) 1 RPM
General Technologies Corp.
TA105
Laser Optical Tachometer
4.2 Display Description
4.3 Measurement Procedures
� CAUTION: Avoid contact with moving and hot
components, to prevent personal
injury or damage to the instrument.
� CAUTION: Laser Radiation is emitted
Avoid direct eye contact
4.3.1 RPM Measurement
• Apply a reflective mark or a piece of reflective tape to the
rotating object under measurement.
• Slide the function switch to the “RPM” position
• Press the measurement button and aim the light beam to the
reflective mark or tape on the rotating object.
• Verify that the “On Target Indicator“ appears on the display,
indicating that the instrument is detecting the rotation of the
object and the reflective mark on it.
• Proceed to read the RPM on the digital display.
�