User`s Manual (PDF 241K) - General Technologies Corp.
Contents
1. Power Source 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 e Accuracies are of reading number of least significant dig its at 23 C 5 C ambient temperature with less than 75 RH C ron ange rewracy mesoo 2 5 to 999 9 RPM 0 1 RPM 0 05 1 Digit 1000 to 99 999 RPM 1 RPM TOT total revolutions 1 to 99 999 RPM 0 05 1 Digit TA105 Laser Optical Tachometer 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 4 2 Display Description Di it lt ay Gy Uy a On Targel l ndicator Readout DAD AL a LILILILIL Low Battery e4 RPM Units Warning 4 3 Measurement Procedures N CAUTION Avoid contact with moving and hot components to prevent personal injury or damage to the instrument N CAUTION Laser Radiation is emitted Avoid direct eye contact 4 3 1 RPM Measurement Reflective Mark 2 to 20 Laser Beam 50 to 500 mm e Apply a reflective mark or a piece of reflective tape to the rotating object under measurement e Slide the function swit2. The response time will vary with the rotational soeed being measured Therefore when measuring very slow rotating parts it may be advantageous to follow the procedure below to increase the update rate of the measurement e Depending on the size of the rotating object or shaft attach multiples reflective marks evenly spaced along its circumference e 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 e The instrument will automatically hold the last reading immediately after the On Target Indicator on the display turns off and hold it while the Measurement button is pressed 4 4 2 MEM function In every measuring cycle pressing the measuring 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 e With the instrument off press and hold down the MEM button to display the Maximum value stored in memory Display screens will alternate between UP maximum and the stored maximum reading Note the value and release the MEM button e Pressing and holding again the MEM button will display the Minimum value stored in memory Display screens will alternate between dn minimum and the stored m
3. P A 45 7G General Technologies Corp 1 SAFETY RULES e 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 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 Response time Range Selection Memory 32 F to 122 F 0 C to 50 C 0 5 sec over 120 RPM Auto Ranging Max Value Min Value and Last Value stored automatically in memory 2 to 20 50 mm to 500 mm Laser Diode lt 1mW output wavelength 630 670 nm Class II 4x 1 5 V type AA UMS or equivalent Distance to target Laser Pointer
4. ch to the RPM position e Press the measurement button and aim the light beam to the reflective mark or tape on the rotating object e 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 e Proceed to read the RPM on the digital display 4 3 2 TOT Total revolutions function e Apply a reflective mark or a piece of reflective tape to the rotating object under measurement e Slide the function switch to the TOT position e Press the measurement button and aim the light beam to the reflective mark or tape on the rotating object e 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 e Proceed to read the total revolutions on the digital display 4 3 3 Reflective marks e Cut a 1 2 length of the reflective tape provided peel off the back to expose the adhesive and attach it to the rotating part or shaft to measure observing the following recommendations The non reflective area must always be smaller that the reflective piece of tape If the object or shaft to measure is reflective it must first be covered with a black tape or painted 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
5. inimum reading Note the value and release the MEM button e Pressing and holding again the MEM button will display the last reading value stored in memory Display screens will alternate between LA Last reading and the stored last reading value Note the value and release the MEM button This memory retrieval 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 5 1 Battery Replacement e When the battery is low and needs to be replaced the Low Bat tery Warning symbol will appear on the lower left hand side of the display e To replace the battery remove the screw and open the battery compartment cover located at the back of the unit and remove the battery e 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 e Close the battery cover and replace the screw 5 2 Cleaning 5 2 1 Lens cleaning Debris or dirt on the lens may cause obstruction and impede the working of the tachometer If this occurs either wipe the lens with a Q tip moistened with water only or blow off the loose particles with clean compressed air Do not use solvent on the lenses as it may become damage 5 2 2 Ex
6. terior cleaning Periodically wipe the case 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 shorts and damage 6 WARRANTY One year limited warranty excluding batteries and fuses For details see Standard Warranty Information on our web page or you may request a printed copy General Technologies Corp 121 7350 72nd Street Tel 604 952 6699 Fax 604 952 6690 www generaltechnologies net Delta BC Canada V4G 1H9 Copyright 2004 General Technologies
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