CEMB TR-NC/8 Скачать руководство пользователя

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Vibration

equipment division

www.cemb.com

CEMB S.p.A.

Via Risorgimento, 9

23826 MANDELLO del LARIO (Lc) Italy

TR-NC/8
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*Translation of the original instructions

Содержание TR-NC/8

Страница 1: ...n equipment division www cemb com CEMB S p A Via Risorgimento 9 23826 MANDELLO del LARIO Lc Italy TR NC 8 No contact Transmitter Use and maintenance instruction manual Translation of the original inst...

Страница 2: ......

Страница 3: ...loop load in relation to the power supply voltage 7 4 3 Connection diagram 7 4 4 Material of the area the sensor faces 8 4 5 Sensor positioning 8 4 6 Quality of the surface the sensor faces 9 4 7 Run...

Страница 4: ...TR NC 8 Rev 02 2013...

Страница 5: ...rotor in correspondence to the measuring point and a cable connect ed to a signal power and processing board Initially designed and developed for monitoring steam turbines of large thermoelectric pow...

Страница 6: ...d eddy currents in the target The induced eddy currents generate an impedance variation in the sensor which measured and linearised by dedicated electronics is converted into a signal proportional to...

Страница 7: ...3 94 mV m GAP BNC centre scale output 5 00VDC GAP BNC scale start output 1 07VDC GAP BNC scale end output 8 94VDC Sensitivity to temperature according to ANSI API 670 93 Power supply 24VDC nominal Op...

Страница 8: ...m Corrente mA Distanza mm TR NC 8 LOOP Corrente mA Sensibilit mA mm 8 00mA mm 5 3 000 3 200 3 400 3 600 3 800 4 000 4 200 4 400 4 600 4 800 5 000 0 00 1 00 2 00 3 00 4 00 5 00 6 00 7 00 8 00 9 00 10 0...

Страница 9: ...d as their failure might place the aux iliary supply network out of service and hence also the monitoring instruments If the power supply is necessarily centralized for various instruments suitable de...

Страница 10: ...140 stainless steel 42CrMo4 as reference material which is normally used in the construction of machine shafts 4 5 Sensor positioning The magnetic field generated by the sensor is propagated in all di...

Страница 11: ...using mechanical devices such as dial gauges or a no contact transmitter The measurement is to be made with a number of revolutions between 1 and 100 where vibration phenomena do not occur Electrical...

Страница 12: ...ases machines already have the necessary holes so that the transducers can simply be fitted and then adjusted to obtain the exact air gap Otherwise the sensors can be installed on brackets or rigid su...

Страница 13: ...tion Remember that the length of the connection between the sensor and the transmitter should not be changed as this would result in changes in instrument linearity and calibration With the machine st...

Страница 14: ...12 TR NC 8 Rev 02 2013...

Страница 15: ...GAP terminals move the sensor a bit at a time until reading 5VDC on the voltmeter and lock the sensor in this position 5 2 General rules for proper electrical installation Themonitoringsystem consist...

Страница 16: ...rectly bolted onto this earth plate Take particular care in choosing the cable clamps as they must ensure a secure shield connection 5 2 2 Wiring The sensor connection cables should not be laid parall...

Страница 17: ...control and they should come together only upstream of the earth stake Otherwise slight leakage to earth of a power device might shift the zero reference of the control device The earth cable must hav...

Страница 18: ...16 TR NC 8 Rev 02 2013...