DIGITAL
DIGITAL
CONTACT TACHOMETER
CONTACT TACHOMETER
Model
CT2
OPERATING INSTRUCTIONS
0702
When disposing of this product, do not dispose of with general waste. It must be
disposed of according to the laws governing Waste Electrical and Electronic
equipment, at a recognised disposal facility.
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BATTERY REPLACEMENT
When the batteries need relacement, the symbol ‘LO’ will appear
on the digital display.
To replace the batteries, slide back the cover on thre rear of the unit
and remove the spent batteries.
Pay particular attention to polarity when replacing the batteries as
incorrect polarity could cause permanent, serious damage to the
instrument.
If the instrument is not to be used for some time, it is strongly advised
to remove the batteries.
PARTS & SERVICE CONTACTS
For Spare Parts and Service, please contact your nearest dealer,
or CLARKE International, on one of the following numbers.
PARTS & SERVICE TEL: 020 8988 7400
PARTS & SERVICE FAX: 020 8558 3622
or e-mail as follows:
PARTS: Parts@clarkeinternational.com
SERVICE: Service@clarkeinternational.com
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Thank you for purchasing this CLARKE Digital Contact Tachometer.
Please read this booklet thoroughly. Your Clarke Tachometer will
give excellent service if it is used carefully and in accordance with
the following advice and recommendations. Never use excessive
force and as with all tools, it should be treated with care and respect.
GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a
period of 12 months from the date of purchase. Please keep your
receipt as proof of purchase. This guarantee is invalid if the product
is found to have been abused or tampered with in any way, or not
used for the purpose for which it was intended.
Faulty goods should be returned to their place of purchase, no
product can be returned to us without prior permission. This
guarantee does not effect your statutory rights.
SPECIFICATIONS
Model No. ............................................... CT2
Part No. ................................................... 4501115
Measuring Range .................................. 5 - 19,999 RPM
0.05 - 1,999.9 M/min
0.2 - 6560 ft/min
Resolution ............................................... 0.1RPM up to 1000RPM
1 RPM above 1000RPM
Accuracy ............................................... ±(0.05% + 1 digit)
Operating Temperature ........................ 0 - 50
Dimensions ............................................. 170x72x37mm
Sampling Time ....................................... 1 sec (over 6RPM)
Weight ..................................................... 0.2kg
Voltage ................................................... 6V
Batteries .................................................. 4xAA
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O
C (32 - 132OF)
FEATURES
Your Digital Tachometer provides a wide measuring range at high
resolution., using a large LCD display. It is designed to measure both
shaft RPM and Surface speed of any smooth surface. Two adapters
are provided for this purpose.
An exclusive microchip, LSI-circuit and crystal time base provide a
highly accurate measurement with a fast measuring time.
The last value Max and Min values are stored in memory and may
be recalled bu pressing a memory button.
The unit is constructed from light, strong, durable components,
ensuring long and maintenance free service, and is designed to fit
comfortably into the palm of the hand.
A - Measure button
B - LCD Display
C - Function Switch
D - Memory Recall Button
E - Surface Speed Adapter
F - RPM Adapter
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MEASURING PROCEDURE
1. RPM Measurement
1.1 Slide the Function Switch to the ‘RPM’ position.
1.2 Install the conical RPM adapter on the shaftof the Tachometer.
1.3 Press the Measure Button, and with the shaft to be measured
rotating, lightly press the conical adapter into its centre. When
the display reading stabilises, release the Measure Button with
the adapter still in contact with the shaft.
2. Surface Speed Measurement
2.1 Slide the Function Switch to the ‘M/min’ or ‘ft/min’ position.
2.2 Install the Surface Speed adapter on the shaftof the
Tachometer.
2.3 Press the Measure Button, and with the shaft to be measured
rotating, lightly press the adapter into its surface. When the
display reading stabilises, release the Measure Button with the
adapter still in contact with the surface of the shaft.
3. Memory Call Button Operation
The last measurement, Maximum and Minimum values are stored in
memory, that is, the last values before the Measure Button was
released. To recall the values, proceed as follows:
3.1 Press and hold the Memory button once. The symbols ‘LA’ will
be displayed along with the LAST VALUE
3.2 Press and hold the Memory Button a second time and the
symbols ‘UP will be displayed together with the the MAXIMUM
VALUE of the last measurement.
3.3 Press and hold the Memory Button a third time and the symbols
‘dn’ will be displayed together with the MINIMUM VALUE of the
last measurement.
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