DIGITALCONTACT TACHOMETER

OPERATING INSTRUCTIONS0702

DIGITALCONTACT TACHOMETER

Model

CT2

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When disposing of this product, do not dispose of with general waste. It must bedisposed of according to the laws governing Waste Electrical and Electronicequipment, at a recognised disposal facility.

Thank you for purchasing this CLARKE Digital Contact Tachometer.

Please read this booklet thoroughly. Your Clarke Tachometer willgive excellent service if it is used carefully and in accordance withthe following advice and recommendations. Never use excessiveforce and as with all tools, it should be treated with care and respect.

GUARANTEEThis CLARKE product is guaranteed against faulty manufacture for aperiod of 12 months from the date of purchase. Please keep yourreceipt as proof of purchase. This guarantee is invalid if the productis found to have been abused or tampered with in any way, or notused for the purpose for which it was intended.

Faulty goods should be returned to their place of purchase, noproduct can be returned to us without prior permission. Thisguarantee does not effect your statutory rights.

SPECIFICATIONSModel 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 - 50OC (32 - 132OF)

Dimensions ............................................. 170x72x37mm

Sampling Time ....................................... 1 sec (over 6RPM)

Weight ..................................................... 0.2kg

Voltage ................................................... 6V

Batteries .................................................. 4xAA

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BATTERY REPLACEMENTWhen the batteries need relacement, the symbol ‘LO’ will appearon the digital display.

To replace the batteries, slide back the cover on thre rear of the unitand remove the spent batteries.

Pay particular attention to polarity when replacing the batteries asincorrect polarity could cause permanent, serious damage to theinstrument.

If the instrument is not to be used for some time, it is strongly advisedto remove the batteries.

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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PARTS & SERVICE CONTACTS

FEATURESYour Digital Tachometer provides a wide measuring range at highresolution., using a large LCD display. It is designed to measure bothshaft RPM and Surface speed of any smooth surface. Two adaptersare provided for this purpose.

An exclusive microchip, LSI-circuit and crystal time base provide ahighly accurate measurement with a fast measuring time.

The last value Max and Min values are stored in memory and maybe 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 fitcomfortably 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 Measurement1.1 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 measuredrotating, lightly press the conical adapter into its centre. Whenthe display reading stabilises, release the Measure Button withthe adapter still in contact with the shaft.

2. Surface Speed Measurement2.1 Slide the Function Switch to the ‘M/min’ or ‘ft/min’ position.

2.2 Install the Surface Speed adapter on the shaftof theTachometer.

2.3 Press the Measure Button, and with the shaft to be measuredrotating, lightly press the adapter into its surface. When thedisplay reading stabilises, release the Measure Button with theadapter still in contact with the surface of the shaft.

3. Memory Call Button OperationThe last measurement, Maximum and Minimum values are stored inmemory, that is, the last values before the Measure Button wasreleased. To recall the values, proceed as follows:

3.1 Press and hold the Memory button once. The symbols ‘LA’ willbe displayed along with the LAST VALUE

3.2 Press and hold the Memory Button a second time and thesymbols ‘UP will be displayed together with the the MAXIMUMVALUE 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 thelast measurement.

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