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CRVW3 3-Channel Vibrating-Wire
Datalogger
1. Introduction
The CRVW3 is a datalogger (Campbell recorder) that measures and stores
readings from up to three vibrating-wire sensors. A temperature measurement
(usually obtained from a thermistor built-in to the sensor) is also available for
each of these three channels. Standard, single-coil-circuit vibrating-wire
sensors are supported (purchased separately). Common vibrating-wire
measurements include water depth (pressure or column height), strain of
structural members, loading, crack/gap extension, earth pressure, and tilt.
The use of patented VSPECT™ technology helps to eliminate unwanted noise
interference and results in high-resolution output. Measurements may be taken
as often as once every 1 to 3 seconds (1 second per active channel) and as
infrequently as once per day. Measurement history is preserved on the device
enabling data collection at reasonable intervals, and protecting against data loss
due to periods of intermittent radio connectivity.
FIGURE 1-1. The CRVW3 3-Channel Vibrating-Wire Datalogger
Содержание CRVW3
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