Campbell CDM-VW300 Series Manuál stáhnout pdf (Strana 50)

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers

FIGURE 7-8. Five-wire vibrating-wire sensor connection

Since temperature is a factor that can influence the frequency output of a

vibrating-wire sensor, a temperature measurement is often part of the

calculation used to convert the frequency output of the sensor to the desired

engineering units. A thermistor is a specialized resistor used for measuring

temperature and as such has no polarity.

7.7.3 CDM-VW300 to SC-CPI Connection

Connect a CPI cable between the CPI port of the CDM-VW300 and the SC-

CPI interface as shown in FIGURE 7-9. A standard RJ45 cable, such as those

used in Ethernet networks, may be used. Yellow tape included in the CPI

Network Kit (pn 29370) can be used to identify an RJ45 cable that is being

used for CPI bus communications.

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Campbell CDM-VW300 Series Manuál Strana 50