- Offer Profile
- Campbell Scientific has a
reputation for accurate and highspeed measurement and control devices and
Met Office approved weather stations. Both sets of products are used by
Renewable Energy companies or those involved with sustainability.
Typically our customers
customize their data acquisition or measurement and control systems using
the dataloggers, sensors, and peripherals that best fit their needs.
Campbell Scientific -
when measurements matter.
Dataloggers & Data Acquisition Systems
Campbell Scientific dataloggers are at the center of our rugged, reliable
data acquisition systems. Our dataloggers share similar measurement and
programming capabilities; selection of the appropriate datalogger depends
mainly on the type, number, precision, and speed of measurements required.
- CR200X-series dataloggers (our smallest, lowest-cost
dataloggers) have an input channel configuration and small size that make
them optimal for measuring one or two simple sensors. Some of the models
have onboard spread-spectrum radios, allowing them to be used as wireless
CR800-Series Measurement and Control Dataloggers
- The CR800 and CR850 dataloggers provide precision
measurement capabilities in a rugged, battery-operated package. The two
models differ in their keyboard display. The CR800 uses an external keyboard
display, the CR1000KD, which connects to the CR800 via its CS I/O port. The
CR850 includes an on-board keyboard display as part of its integrated
CR1000 Measurement and Control System
- Following in the tradition of the CR10 and CR10X, our
CR1000 dataloggers measure more sensors than our CR200X- and CR800-series
dataloggers. The CR1000 is a compact, modular line of dataloggers with a
measurement and control module, external power supply, and keyboard display.
Their power consumption and packaging are optimized for unattended network
- Campbell Scientific's CR3000 Micrologger® is a
self-contained, rugged datalogger that includes battery-backed, real-time
clock and nonvolatile data storage. It has an on-board keyboard and 128 x 64
backlit LCD for accessing information on-site. The CR3000 features removable
Input/Output connections, a CS I/O port, peripheral port, and RS-232 port.
CR5000 Measurement and Control System
- This rugged, high performance, integrated data
acquisition system has a built-in keyboard, graphics display, and PCMCIA
card slot. It combines 16-bit resolution with a maximum throughput of 5000
measurements per second. The CR5000 is available with a built-in sealed
rechargeable battery base or in a low profile version without batteries.
CR9000X-Series Measurement and Control Systems
- The CR9000(X)-series dataloggers are ideal for
applications that require rapid measurements. Measurements at rates up to
100,000 samples per second can be made with 16-bit resolution. The user
inserts up to nine I/O modules to configure the system for a specific
application. A smaller version, the CR9000XC, accepts up to five I/O
CR7 Measurement and Control System
- Primarily used in multi-parameter research and industrial
applications, this large modular datalogger allows the user to customize the
measurement system to their specific needs. Any combination of I/O Cards can
occupy slots in the I/O Module. The CR7 provides high resolution (up to 50
nV) and a large number of channels. It is our only datalogger that can do
Measurement & Control Peripherals
- This family of peripherals
expands the already formidable measurement and control capabilities of
Measurement peripherals are situated between the datalogger and its sensors,
while control peripherals are situated between the datalogger and external
device(s) under datalogger control.
Examples of measurement peripherals include vibrating wire interfaces,
serial data interfaces, terminal input modules, and in most cases,
multiplexers. Examples of control peripherals include relay drivers, some
SDM peripherals, and occasionally, multiplexers. Some SDM devices can
perform both measurement and control functions simultaneously.
- Multiplexers allow our dataloggers to measure more
sensors. The number of analog inputs is increased by sequentially
multiplexing sensor leads into "common" leads. The individual common leads
are connected to datalogger analog inputs, excitation channels, or ground as
required by the sensor. The datalogger controls the multiplexer using two
control ports or one control port and one excitation channel.
Synchronous Devices for Measurement
- Synchronous Devices for Measurement (SDMs) are a group of
addressable peripherals that expand the datalogger's output and measurement
capabilities. The datalogger controls the SDM output device by storing a
value in a memory location, which is then used by the SDM to set a voltage
or relay. Measurement devices store data from sensors which are regularly
read into the datalogger through a control port.
Vibrating Wire Interfaces
- These interfaces allow our dataloggers to read vibrating
wire sensors. Vibrating wire (or vibrating strip) transducers are commonly
used to measure strain, load, pressure, and water level. These sensors
output a frequency signal generated by a vibrating filament that can be read
on an analog channel.
Wireless Sensor Interfaces
- These components are used to interface with our wireless
sensors. Products included in this category are base stations, the wireless
configurable sensor interfaces, and the CWS Sensor to PC Interface.
- Relays are devices that can provide power directly to
external devices that have modest power requirements, such as the small fans
used in our Bowen ratio systems. Alternatively, these relay drivers can
provide control signals to heavy-duty external relays that in turn can
control power to heavy-duty, high-power equipment such as ventilation fans,
aquacultural aerators, refrigeration units, or other electrically powered
Terminal Input Modules
- These small modules are provide completion resistors for
resistive bridge measurements, voltage dividers, and precision current
shunts. They attach directly to the datalogger's input terminals. Each input
module provides circuitry to connect one sensor, except for the voltage
dividers, which can connect up to two single-ended sensors.
Miscellaneous Measurement and Control Peripherals
- Measurement and Control Peripherals that don't quite fit
into our other categories are included here.
- Our sensors are generally designed for long-term
installation under adverse environmental conditions. Most of the sensors
listed on our web site measure environmental and water resources parameters,
but our dataloggers are not limited to measuring environmental sensors.
Sensors used in industrial applications such as strain gages,
accelerometers, hydraulic pressure transducers, are also available, either
through our applications engineers or from a third party.
Our dataloggers have many channel types and programmable inputs, enabling
them to measure most commercially available sensors. Sensors that output
voltage, pulse, SDI-12, RS-232, or 4-20 mA signals can be read using the
datalogger's analog (single-ended and differential), pulse counter, SDI-12,
RS-232, continuous analog output, digital I/O, anti-aliasing filter, and
switched excitation channels.
Air Temperature Sensors
- Campbell Scientific offers thermistors, thermocouples,
and RTDs for measuring air temperature. The datalogger's programmability
allows a variety of measurement options and output in units of the user's
choice (e.g., °C , °F, °K). Naturally aspirated and fan-aspirated solar
radiation shields are available for specific sensor models.
Air Temperature & Relative Humidity
- Air temperature and relative humidity probes typically
consist of two separate sensors packaged in the same housing. Often relative
humidity is measured with a capacitive RH sensor, while air temperature is
measured by a PRT. The HMP155A, HMP45C or CS215 is recommended in humid
areas or applications in which accurate measurements of RH (especially above
the 90% RH level) are important.
Barometric Pressure Sensors
- Barometric pressure sensors measure fluctuations in the
pressure exerted by the atmosphere. The sensors require protection from
condensing humidity, precipitation, and water ingress and are typically
housed with the datalogger inside an environmental enclosure. If the
enclosure is airtight, the sensor's pressure port must be vented to the
- These sensors measure wind speed and direction,
precipitation, barometric pressure, temperature, and relative humidity—all
in a single device that has no moving parts.
- Conductivity sensors measure how well a solution conducts
a current. The more ions that are in the solution, the higher the
- If you believe a picture is worth a thousand words, our
digital camera is just what you need! Designed to work in harsh environments
with very little power, our digital camera can take a picture on demand
(driven by datalogger programming) or on a timed basis.
Dissolved Oxygen Sensors
- Dissolved oxygen is a critical parameter in determining
the health of aquatic systems. In many aquacultural applications,
measurement of decreased oxygen levels is used as the primary indicator to
start up aerators.
- The most common applications are measuring snow depths
and water levels. Ultrasonic sensors determine the distance to a target by
sending out ultrasonic pulses and listening for the returning echoes that
are reflected from the target. The time from transmissions to return of an
echo is the basis for obtaining the distance measurement.
Duff Moisture Sensors
- Duff is an important component of forest fire fuel. An
accurate knowledge of moisture content in duff material is critical to those
conducting scheduled burns as well as those attempting to battle
Electrical Current Sensors
- Electrical current sensors detect the flow of current
along an electrical wire by measuring (or sensing) the magnetic field that
is set up by the flow of electrical current. As such, the sensors are
external to the jacket of the ac power cable and there is no direct
electrical connection between the sensor and ac power.
Electric Field Sensors
- Like electrical charges repel and unlike charges attract.
An electric force field, referred to as an electric field, is said to exist
around electrical charges. Electric field defines the force per charge (E =
F/q), and has both a magnitude and direction (vector quantity). The units of
electric field are Newtons/Coulomb, which is equivalent to the more commonly
expressed units of Volts/meter (V/m).
- Evaporation gages determine the evaporation rate by
measuring the changing water level in an evaporation pan. They consists of a
float, pulley, and counterweight attached to a potentiometer mounted through
a gear assembly in a weatherproof housing. The potentiometer produces
a resistance output proportional to the position of the float
Freezing-Rain and Ice Detectors
- Freezing rain sensors detect the presence of icing
conditions so that appropriate actions can be taken to prevent damage to
power and communication lines, to warn of road hazards, or to keep ice off
of a plane's wings.
Fuel Moisture and Fuel Temperature
- Campbell Scientific offers sensors that emulate and
measure the moisture content and temperature of similarly-sized twigs on the
forest floor. These 10-hour fuel moisture and fuel temperature sensors are
often incorporated in our pre-configured or custom fire-weather stations.
When connected to a datalogger with telemetry capability, the user can
automatically monitor changing fuel conditions without having to visit the
GPS Global Positioning Sensors
- These sensors use Global Positioning Satellites (GPS) to
determine position. There are three segments in determining position:
satellites, ground stations, and sensors. The sensors access the satellites
that circle the earth (there are 24).
Heat, Vapor, and CO2 Flux
- By finding the covariance between the vertical wind speed
fluctuations with temperature against humidity and carbon dioxide
fluctuations, the sensible and latent heat flux, as well as vapor and CO2
fluxes, can be found. Virtual sensible heat flux can be determined by
finding the covariance between the sonically determined temperature and
vertical wind speed fluctuations.
Infrared Gas Anaylzers
- Campbell Scientific offers both closed-path and open-path
infrared gas analyzers that produce high-quality measurements in the field.
The closed-path analyzer simultaneously measures absolute carbon dioxide and
water vapor densities, sample cell temperature, and pressure. The open-path
analyzer simultaneously measures absolute carbon dioxide and water vapor
densities, air temperature, and barometric pressure.
Leaf Wetness Sensors
- There are three leaf-wetness sensors classifications:
1. Surface contact types that measure the electrical resistance of a water
film on the leaf surface,
2. Mechanical types that detect a change in sensor length or weight, or
3. Electrical resistance types that are applied to mock leaves and are
designed to emulate periods of leaf wetness after rainfall, dew, or spray.
- Our ORP sensors measure the Oxygen-Reduction Potential of
a solution. Used in tandem with a pH sensor, the ORP measurement provides
insight into the level of oxidation/reduction reactions occurring in the
- Our pH sensors measure of the acidity or alkalinity of a
solution. The greater the hydrogen ion concentration, the smaller the pH;
when the pH is above 7, the solution is basic (alkaline), and when it is
below 7, the solution is acidic.
- Campbell Scientific offers several types of precipitation
measuring devices: tipping bucket rain gage, siphoning tipping bucket rain
gage, heated rain gage, and a snowfall adapter.
Sensor selection can be determined by precipitation type (rain or snow),
orifice diameter, measurement range, and accuracy.
- Present Weather Sensors are often a component of road,
marine, and airport automated weather stations. They use a laser-based
system to determine visibility, measure precipitation rate, and identify
precipitation types (e.g., drizzle, rain, snow, and hail). This information
is especially useful for assessing traveling conditions.
Road Weather and Surface Conditions
- Campbell Scientific has sensors and measurement systems
that provide data to monitor the atmospheric conditions near roadways as
well as the conditions on the actual surface of the road.
Roadbed Water Content
- Products for evaluating the volumetric and gravimetric
water content of roadbed material both at the construction site and in the
Snow Water Equivalency and Snow Depth
- This section contains sensors that measure the amount of
water contained within a snowpack or the depth of the snowpack.
Soil Heat Flux Sensors
- Heat flux sensors measure the rate of energy transferred
through a given surface. The sensors can be several thermocouples whose
measurements are averaged, a thermopile, or a thermopile with a film heater.
Soil Temperature Sensors
- Thermistors, thermocouples, thermocouple wire, and
averaging thermocouples are standard soil temperature sensors that are
available. Campbell Scientific dataloggers are capable of measuring most
commercially available soil temperature sensors. The datalogger's
programmability allows a variety of measurement options and output in units
of the user's choice (e.g., °C , °F, °K).
Soil Volumetric Water Content
- Soil water content indicates how much water is present in
the soil. It can be used to estimate the amount of stored water in a profile
or how much irrigation is required to reach a desired amount of water. Soil
volumetric water content sensors provide a tool to measure the water content
using hand-held sensors, or installing the water content sensors into the
soil for long-term measurements.
Soil Volumetric Water Content Profiles
- These probes monitor soil water content profiles. They
can measure soil moisture at multiple depths and are easy to install. The
output type can be specified; specifications vary based on output.
Soil Water Potential Sensors
- Soil water potential sensors determine the energy status
of water in soil. The energy state describes the force that holds the water
in the soil. We offer sensors to measure soil water potential by two
methods: the heat dissipation method or the electrical resistance method.
Solar Radiation Sensors
- Campbell Scientific offers pyranometers, net radiometers,
and quantum sensors, all designed to measure various aspects of the energy
imparted by the sun on the Earth's surface.
- Strain gages are used to quantify live loads by measuring
induced strains on various types of structures and components.
Surface Temperature Sensors
- We offer two different technologies to measure surface
temperature. Infrared temperature sensors are a non-contact means of
measuring the surface temperature of an object or surface by sensing the
infrared radiation given off by the subject. Other temperature sensors
attach directly to the surface and measure temperature by physical contact.
- Turbidity sensors measure suspended solids in water,
typically by measuring the amount of light transmitted through the water.
They are used in river and stream gaging, wastewater and effluent
measurement, control instrumentation for settling ponds, sediment transport
research, and laboratory measurements.
Water Level, Stage, & Flow Sensors
- Water level, stage, or flow can be measured with many
types of sensors: pressure transducers, bubblers, shaft encoders, or
ultrasonic sensors. The location where you are measuring water level, the
accuracy required, and the ease of installation all contribute to
determining the best water-level sensor for your measurement site.
- Campbell Scientific offers both portable and stationary
automatic water samplers for storm water, waste water, or other
water-quality applications. These samplers use external vacuum pumps to draw
water through intake tubing, instead of the traditional peristaltic pumps
that induce flow by squeezing flexible tubing.
Water Temperature Sensors
- Our thermistors are versatile, rugged temperature sensors
optimized for long-term deployment. They can monitor water temperature for
depths up to 50 feet. The thermistor circuit is measured by a datalogger
excitation channel in tandem with a single-ended analog input channel.
Wind Speed and Wind Direction
- Campbell Scientific offers a selection of quality wind
sensors. Our wind vanes and anemometers are used in research, air quality,
and general purpose meteorological applications. Anemometer only versions of
some wind sensors are available for customers who wish to measure wind speed
or wind run only.
- The CWS family of wireless sensors expands measurement
possibilities by allowing sensors to be installed at a distance from the
datalogger without cables. We offer an interface that connects to a variety
of sensors, providing them with wireless capability. We also offer a
wireless infrared radiometer and soil water content sensor.
- Campbell Scientific offers a full range of
communication devices. On-site peripherals include external data storage
devices, PDAs, laptop or desktop computers, and displays.
Telemetry peripherals support communications between the datalogger and one
or more computers. These peripherals allow the user to access remotely the
datalogger's real-time data, stored data, and programming. Examples include
short haul, multidrop, telephone, radio, and satellite modems.
Combinations of on-site and telemetry devices can be used in the same
application for maximum flexibility, convenience, and reliability.
Data Storage, External
- Several types of data storage devices are available from
Campbell Scientific. Data storage devices can be used for redundant data
storage, additional data storage, or to provide a convenient way to retrieve
data from the field site.
- Direct Communication is our term for the process in which
a datalogger communicates directly with a computer port.
- Our ethernet options allow Campbell Scientific
dataloggers to communicate with a computer using TCP/IP. The local network
or dedicated Internet connection can also be accessed in combination with
short haul or RF peripherals.
- In most applications, data and communications
interactions with the datalogger are displayed and monitored on a base
station computer running one of our datalogger support software packages.
The displays listed here are aimed at field use.
- Fiber optic cables and converters are ideal for lightning
- A multidrop network allows many dataloggers to be
interrogated via a single cable. Individual multidrop modems are assigned
- A portable handheld device (PDA) can be used to collect
and display the datalogger’s data, transfer datalogger programs, graph data
for up to two elements, and transfer the datalogger’s data to a PC.
- Spread spectrum, UHF, VHF, or ELOS radio frequencies can
be used to retrieve data from monitoring sites. We offer radios in the 900
MHz, 2.4 GHz, 148 to 174 MHz, 400 to 430 MHz, and 440 to 470 MHz range. FCC
licenses are required for some RF ranges.
- Campbell Scientific supports satellite telemetry through
the GOES, Argos, and Meteosat systems. Satellite telemetry may also be
possible using other satellite systems; contact the factory for details.
- Short haul modems provide local communication between the
datalogger and a computer with an RS-232 serial port. The modem transmits
data up to 6.5 miles over four-wire unconditioned line (two twisted pairs).
- Telephone communications offered by Campbell Scientific
are digital cellular modems, rugged landline modems for field use, and voice
modems. Voice modems allow you to access your data via voice or to retrieve
data to your computer.
- Some of our communication devices require a peripheral to
complete the connection. Devices that require a communication peripheral
include cellular modems, short-haul modems, and fiber optic converters.
Campbell Scientific also offers communication peripherals that allow
multiple communication devices to be connected at one time.
- Data cables physically connect two devices together to
allow data to flow between the two devices. They may be used to connect a
datalogger to a communications peripheral, a datalogger to a computer, a
computer to a communications peripheral, or a communication peripheral to
another communication peripheral.
- Whether you're new to the world of dataloggers, or a
long-time user of data acquisition equipment, Campbell Scientific provides a
software solution for your application. Campbell Scientific offers
introductory packages that support fundamental applications and
full-featured packages for sophisticated measurement and control
For detailed information about our software packages, visit the individual
product pages. We offer product-specific FAQs, patches, and demo versions
Datalogger Support Software
- Our datalogger support software packages support
datalogger programming, communications between datalogger and PC, and to
varied extents, real-time and historical data monitoring. They allow a
customer to support a single station or an entire datalogger network.
Display and Analysis Software
- These software packages are designed to display data
retrieved from Campbell Scientific dataloggers. The data is displayed in
graphical formats such as strip charts, dials, scatter plots, and meters, as
well as digital values. Several of these packages also include alarms.
Data Management Software
- Managing large data files and multiple data files can be
a big task. Campbell Scientific offers database software that can help with
Software for Handhelds
- Campbell Scientific offers software packages that allow
our dataloggers to communicate with a user-supplied personal handheld
devices (PDAs). This software performs simple on-site functions such as
transferring datalogger programs, monitoring real-time data, controlling
datalogger ports and flags, and graphing historical data.
Application Specific Software
- Software packages that are customized for specific
applications are listed here.
Software Development Kits
- Software Development Kits, or SDKs, are available for
software developers who wish to add custom capabilities or interfaces to our
datalogger support software.
- Campbell Scientific's data acquisition systems are
powered by reliable, inexpensive 12 Vdc sources. Power consumption by our
dataloggers, peripherals, and sensors is minimal, allowing extended
operation from our standard sealed rechargeable battery or set of alkaline
cells. Systems that require more power can be supplemented with external
rechargeable batteries, regulators, and charging sources (ac power or solar
Alkaline Battery Packs
- Contemporary dataloggers that can be powered by alkaline
batteries include our CR800, CR850, CR1000, and CR3000. Some retired
dataloggers, such as the CR500, CR510, CR10, CR10X, 21X, and CR23X, can also
be powered by alkaline batteries.
Rechargeable Power Supplies
- All of our dataloggers can be powered by a rechargeable
power supply that consists of a rechargeable battery, regulator, and
charging source. The charging source powers the system while float-charging
the batteries. The batteries then provide back-up power if the charging
source is interrupted.
- Campbell Scientific enclosures are designed
specifically for data acquistion applications. They protect equipment from
dust, water, sunlight, or pollutants. Their white color reflects solar
radiation, which reduces thermal gradients within the enclosure, a potential
source of error in thermocouple measurements.
- Our standard enclosures are intended to accommodate a
datalogger, power supply, and at least one peripheral. We typically refer to
these enclosures by their internal dimensions (in inches). Please note that
our larger dataloggers, the CR7, CR9000X, and CR9000, have their own
- No time to wire your Campbell Scientific system? Let us
do it for you. Campbell Scientific’s pre-wired enclosures combine
flexibility with ease of use. You still have the flexibility to choose your
system components, but installation is easy because the sensors are simply
attached to pre-wired connectors on the outside of the enclosure. Campbell
Scientific will even create a custom datalogger program for a small fee.
Installed Enclosure Accessories
- This section includes a list of enclosure accessories
that must be ordered at the same time as the enclosure.
Other Enclosure Accessories
- These products are for securely mounting your equipment
to the enclosure backplate, controlling the relative humidity inside of the
enclosure, and providing adequate strain relief for sensor cables. All of
this helps keep your equipment from becoming damaged by environmental and
some man-made conditions. You can attach the enclosures to any of our
tripods or towers, or to a user-supplied pipe.
Tripods, Towers, and Mounts
- Our tripods and towers are sturdy instrument mounts
designed to support sensors, wiring, antennas, and instrument enclosures.
Both tripods and towers can be guyed (required for the twenty and thirty
foot towers, recommended for tripods or ten foot towers subjected to severe
Tripods have adjustable legs that are deployed more easily in various
Towers allow higher measurement heights (to 30 ft), and the unguyed 10 ft
model has a smaller footprint than a tripod.
Campbell Scientific also offers several mounts for attaching sensors and
antennas to the tripod or tower.
- For meteorological applications, the tripods can be
augmented with mounts allowing attachment of sensors such as wind sets,
pyranometers, and temperature/relative humidity probes. Barometers, soil
temperature and moisture probes, and rain gages can also be used with
tripod-based weather stations.
- Our instrumentation towers are constructed of rust-free
aluminum with a steel base. They consist of 10-ft sections that ease
shipping and on-site installation.
The towers allow higher measurement heights (to 30 ft) than the tripods, and
the unguyed 10-ft model has a smaller footprint than our tripods.
- Campbell Scientific offers several models of vertical
poles for mounting sensors, enclosures, or other instrumentation. The models
differ in length. Our 10-m model consists of five 6-ft galvanized-steel
pipes and a stainless-steel base. The other models are constructed from
stainless-steel, 1.5-inch IPS pipes.
Crossarms and Crossarm Brackets
- Crossarms provide a rugged attachment point for securing
meteorological sensors, antennas, and other peripherals to our tripods and
towers. The design of all the crossarms places the sensor at a few feet away
from the midline of the tower or tripod thereby serving to reduce the
effects of the mount on the sensor measurement.
- Campbell Scientific sells several mounts for fastening
sensors to an instrumentation tripod, tower, or pole. We also offer
radiation shields and leveling platforms to help you obtain the most
accurate measurements possible.