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Campbell Scientic Australia Pty. Ltd (07) 4772 0444
Air Quality
The CR800 series can monitor and control gas analysers,
particle samplers, and visibility sensors. The datalogger
can also automatically control calibration sequences and
compute conditional averages that exclude invalid data
(e.g., data recorded during power failures or calibration
intervals).
Water Resources/Aquaculture
Our CR800 series is well-suited to remote, unattended
monitoring of hydrologic conditions. Most hydrologic
sensors, including SDI-12 probes, interface directly to
the datalogger.
Typical hydrologic measurements:
• Water level is monitored with incremental shaft
encoders, double bubblers, ultrasonic ranging
sensors, resistance tapes, strain gage pressure
transducers, or vibrating wire pressure transducers.
Vibrating wire transducers require an AVW200
series or another Vibrating Wire 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 datalogger.
• Samplers are controlled by the CR800 or CR850 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.
Vehicle Testing
This versatile, rugged datalogger is ideally suited for
testing cold and hot temperature, high altitude, o -
highway, and cross-country performance. The CR800
and CR850 are compatible with our SDM-CAN interface,
GPS16X-HVS receiver.
Soil Moisture
The CR800 and CR850 are compatible with the following
soil moisture measurement technologies:
• Soil moisture blocks are inexpensive sensors that
estimate soil water potential.
• Matric water potential sensors also estimate soil
water potential but are more durable than soil
moisture blocks.
• Time-Domain Reectometry Systems (TDR) use
a reectometer controlled by the datalogger to
accurately measure soil water content. Multiplexers
allow sequential measurement of a large number
of probes by one reectometer.
• Self-contained water content reectometers are
sensors that emit and measure a TDR pulse.
• Tensiometers measure the soil pore pressure of
irrigated soils and calculate soil moisture.
Other Applications
• Wireless sensor/
datalogger networks
• Avalanche forecasting,
snow science, polar,
high altitude
• Fire weather
• Geotechnical
• Historic preservation
The CR800-series dataloggers are ideal for monitoring water
quality and level at reservoirs, springs, canals, pipelines, and
culinary sites.
Vehicle monitoring
includes not only
passenger cars, but
airplanes, locomotives,
helicopters, tractors,
buses, heavy trucks,
drilling rigs, race cars,
and motorcycles.
Data measured by this weather station near Aspen,
Colorado is used in avalanche forecasting.
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