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벨트 텐션메타 - CLAVIS 휴대형 Types 4 (기본형)
Clavis hand held 벨트텐션메타는 모든 벨트류의 텐션측정 분야에 적용됩니다. 이 장비는 작은 감지센서와 게이지로서 구성되며.벨트에 가볍게 진동을 주면 "진동 주파수"가 생기는데 이것을 감지하여 게이지에 표시됩니다. 이 장비는 모든 종류의 동력전달 벨트와 Toothed timing 벨트. Poly-Vee 벨트 그리고 단순한 Vee 벨트 등에 적용됩니다. 텐션 주파수 측정범위는 30Hz to 600Hz 범위의 대부분 벨트에 적용됩니다. 일반적으로 많이 사용되는 표준센서 외에 다양한 size및 종류의 센서들이 준비되어 있습니다. *Magnetic sensor : 금속성 chain belt 에 사용 *실린더형 센서 : 접근이 어려운 곳 또는 여러게의 벨트가 동시에 걸려 있어 standard 센서로는 접근이 어려울 때 사용 센서는 교환식입니다. 충전 베터리는 약 160 시간의 작동을 보장합니다. Meter calibration sensor 포함: 사용시 장비의 오작동 여부를 확인 하기 위한 도구 장비특징 시중에 음파식(sonic 방식)유사제품이 있는데측정을 반복 하면 수치가 변하며, 작업자에 따라 다른 수치가 표시되고 작업장의 소음 및 사용 시 말을 하면 측정 수치가 변하는 문제가 있어 CLAVIS 제품으로 교체 구매한 사례가 많읍니다.CLAVIS 제품은 상기와 같은 문제가 전혀 없읍니다 ! BELT TENSION METER TYPE 4
The industry standard meter now has an enhanced specification:-- 30-600Hz Range
- Clavis Patented sensor
- 160 hour battery life
- Meter calibration checker
- Interchangeable sensors
- Carrying case
- Calibration Certificate
The Clavis hand held beltmeter can be used for all belt tension gauging applications. It produces readings which accurately reflect the tension in the belt, consistently and without operator skill. CLAVIS tension meters were introduced in 1988.
The equipment consists of a small sensing head which is held across the belt to be measured. The belt is then tapped to induce the belt to vibrate at its natural frequency. The vibrations are detected and the frequency of vibration is then displayed on the measuring unit.
The unit is suitable for measuring tension in all types of power transmission belts, ranging from toothed timing belts, poly-vee belts, and simple vee belts. The frequency measurement range is from 30Hz to 600Hz which covers most automotive applications. A general purpose head is supplied. A range of interchangeable sensing heads with differing dimensions is available upon request.
Rechargeable batteries provide 80 hours of operation (dry batteries provide 160 hours). The meter automatically switches off 10 minutes after the last reading is taken, to prolong battery life. A 'LO BAT' indicator on the display shows when the unit needs recharging. The charging socket is adjacent to the sensing head connector. An overnight charge will fully restore the batteries. During charging the 'LO BAT' indicator will flash. The meter may be powered directly from the charger if required.
Additional notes
The range of the meter is from 30 to 600Hz. Readings below 30Hz will cause the display to flash '030' and then clear to '000'. Readings above 600Hz will cause the display to flash '600' and likewise clear to '000'.
In most applications the meter is used to make comparative tension checks. Often two or three spans may be available on which to take measurements. As the frequency depends upon the span length, the span to be used for measurement must be defined. Normally it is found that the longer spans are easier to vibrate than the very short span lengths. If the belt tension adjuster is on the measurement span, ensure that the variation in span length created by the adjuster will not be significant.
Calibration
The Clavis Belt Tension Meter is based upon a microprocessor using digital signal processing techniques. A 8.0000 MHz quartz crystal provides the fundamental frequency reference which should ensure, for the life of the instrument, an accuracy of;
+ or - 1 digit below 100Hz
+ or - 1% of reading above 100 Hz
A high precision steel resonator is supplied for an easy spot frequency check of calibration. The resonator should be tapped on a hard surface and held steady between the jaws of the sensor. The meter should read 250Hz with a tolerance of + or - 1%. It is important that both the sensor and the fork are held still, otherwise doppler frequency change may occur due to relative motion. However as with all gauging equipment a more comprehensive calibration check should be made periodically. A Clavis Belt Tension Meter Calibrator is available for this purpose, or the unit may be returned to the manufacturer for a calibration check and the issue of a certificate of calibration.
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