Water Resources
The CR10X is well-suited to remote, unattended monitoring of
hydrologic conditions. Many hydrologic sensors, including
SDI-12 sensors, interface directly to the CR10X.
Typical hydrologic measurements:
• Water level is monitored with incremental shaft encoders,
double bubblers, ultrasonic level transducers, resistance
tapes, or strain gage or vibrating wire pressure transducers.
Some shaft encoders require a QD1 Interface. Vibrating wire
transducers require an AVW1, AVW4, or AVW100 Interface.
• Well draw-down tests use a pressure transducer measured
at logarithmic intervals or at a rate based on incremental
changes in water level.
• Ionic conductivity measurements use one of the switched
excitation ports from the CR10X.
• Samplers are controlled by the CR10X as a function of time,
water quality, or water level.
• Alarm and pump actuation are controlled through digital
I/O ports that operate external relay drivers.
4
Datalogger measures water level using a shaft encoder, then calculates
flow. The data are telemetered, via radio, to the water master for fur-
ther processing, review, and archive. Stilling well at diversionary
dam, Emery County, Utah.
Other Applications
• Avalanche control, snow science, and Arctic research
• Highway and pavement studies
• Sporting events
• Space research
The CR10X’s small size, versatility, and expandability allow it to
simultaneously monitor environmental variables that could be
detrimental to works of art (e.g., relative humidity, solar radia-
tion, air temperature, water table level, gas concentrations). By
using multiplexers or SDMs, these parameters (and others) can
be monitored at a number of locations in a building or across a
structure. This enables comprehensive monitoring, manage-
ment, remediation efforts, and documentation.
Weather measurements on the Sphinx provided input for its preserva-
tion, Cairo, Egypt.
Our dataloggers measured the effects of gravity on a test structure
aboard a NASA low-gravity flight.
Mining, Earth Science, and Geotechnical
The small size, low power requirements, and wide operating
temperature range of the CR10X make it a good choice for these
remote, typically harsh applications. Multiple CR10Xs can be
accessed via telemetry allowing monitoring and review of mea-
surements across an entire study area. Vibrating wire sensors,
strain gages, load cells, pressure transducers, linear and string
potentiometers, GPS receivers, and frequency output devices are
regularly used in these systems.
Historical Preservation
(24 pages)
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