3 cdm-vw300 to sc-cpi connection, Cdm-vw300 to sc-cpi connection, 8. five-wire vibrating-wire sensor connection – Campbell Scientific CDM-VW300 Series Dynamic Vibrating-Wire Analyzer System User Manual
Page 50: Ion 7.7.3
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.
40
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