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Summary of Contents for General CT6235B
- Page 1 CONTACT TACHOMETER User’s ManUal CT6235B 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com...
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Page 2: Table Of Contents
TABLE OF CONTENTS Introduction......3 Key Features ......4 Safety Instructions . -
Page 3: Introduction
0 to 20,000 rpm, linear speeds from 5cm/min (2 in./min) to 2km/min (6,562 ft./min), and lengths from 5cm to 10km (2 in. to 6.2 miles). The CT6235B is powered by four “AA” batteries (included) or an optional 6V AC/DC adapter. -
Page 4: Key Features
WHAT’S IN THE CASE The CT6235B comes fully assembled in a carrying case along with the following accessories (see Figure 1): • Three rubber fittings—called rpm adapters—for making contact with the end of a rotating shaft of a motor or gen- erator. - Page 5 lowed (concave) end of a metal shaft; one (B) has a large cone compatible with a 1/2 in. diameter shaft, the other (J) has a smaller cone that fits into shafts 1/4 in. across. The third (K) fitting has its own hollowed end; it is designed to fit over a 1/4 in.
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Page 6: Product Overview
G. Display window H. Battery compartment cover (in back) I. Jack for 6-V AC/DC adapter (on left side) J. 1/4" rubber rpm adapter K. 1/4" rubber rpm adapter with hollowed end Fig. 2. The CT6235B’s controls and indicators and other physical features... -
Page 7: Setup Instructions
OPERATING INSTRUCTIONS SIMULATING SPEED MEASUREMENTS Before using the CT6235B on actual equipment, General sug- gests that you familiarize yourself with the way the instru- ment measures, stores and recalls speeds by spinning the tachometer’s shaft by hand. - Page 8 To simulate a speed measurement, keep the tachometer cradled in your right hand and spin its shaft by “flicking” it with the middle two fingers on your left hand while pressing the Measurement button with your right thumb. Note how the display tracks the force of your flicks, and also how the instrument powers off whenever the Measurement button if released (this “dead man switch”...
- Page 9 Also note that releasing the MEM button powers off the dis- play and the instrument. Now press the MEM button twice and hold it. This again illuminates the display, but now it shows the last reading you stored, indicated by and alternating with the letters “LA”. Finally, press the MEM button three times and hold it.
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Page 10: Measuring Rotating Speeds
Note that because you have stored five measurements, the display will read “AN 5” once the countdown reaches zero. If you release the MEM button and then press and hold it again, the display will first read “1” and then the value of the first of the five measurements you stored. -
Page 11: Measuring Linear Speeds
Cradle the tachometer in your right hand. While pressing the Measurement button on the right side of the instrument with your right thumb, gently push the cone-tipped end of the rpm adapter into the cavity at the end of the spinning motor or generator shaft whose speed you wish to measure. -
Page 12: Measuring Surface Dimensions
0.9. MEASURING SURFACE DIMENSIONS The CT6235B can also serve as a metric ruler. To operate it in that mode, move the function switch to the “m” position and install the surface speed wheel directly onto the instru- ment’s metal shaft. -
Page 13: Specifications
SPECIFICATIONS Measurement ranges Rotational speeds from 0 to 20,000 rpm; linear speeds from 5cm/min (2 in./min) to 2km/min (6,562 ft/min); lengths from 5cm to 10km (2 in. to 6.2 miles) Measurement accuracy ±0.05% of reading plus one digit Resolutions 0.1 rpm for rpm measurements to 999 rpm, 1 rpm at higher speeds;... -
Page 14: Maintenance Tips
When the text “LO” appears on the display, it’s time to change the CT6235B’s four “AA” batteries because their total potential has fallen below 4.5 volts. To do so, follow the Setup Instructions on p. -
Page 15: Return For Repair Policy
Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product. In no event shall General be liable for any in- cidental, special, consequential or punitive damages, or for any cost, attorneys’ fees, expenses, or losses alleged to be a... -
Page 16: Specifications
99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Specifications subject to change without notice ©2011 GENERAL TOOLS & INSTRUMENTS NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS. MAN#CT6235B 2/10/11...
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