Measurement and Control Products for WEATHER Measurement and Control Products for WATER Measurement and Control Products for ENERGY Measurement and Control Products for MACHINES Measurement and Control Products for STRUCTURES Measurement and Control Products for EARTH
Current Products
 No Retired

Air Temperature and Relative Humidity Sensors

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...

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...

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...

Basic Weather Sensors

These sensors measure wind speed and direction, precipitation, barometric pressure, temperature, and relative humidity—all in a single device that has no moving parts.

Digital Cameras

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...

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...

Distance Sensors

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...

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...

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....

Electrical Conductivity Sensors

Conductivity sensors measure how well a solution conducts a current. The more ions that are in the solution, the higher the conductivity.

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...

Evaporation Gauges

Evaporation gauges determine the evaporation rate by measuring the changing water level in an evaporation pan. They consist of a float, pulley, and counter weight...

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...

Fuel Moisture and Fuel Temperature Sensors

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...

Global Positioning System (GPS) 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...

Heat, Vapor, and Carbon-Dioxide Flux Sensors

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...

Infrared Gas Analyzers

Campbell Scientific offers both open-path and closed-path infrared gas analyzers that measure carbon dioxide, water vapor, temperature, and pressure. These analyzers feature aerodynamic designs to...

Leaf Wetness Sensors

There are three leaf-wetness sensor classifications: Surface contact types that measure the electrical resistance of a water film on the leaf surface Mechanical types that detect...

ORP Sensors

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...

pH Sensors

Our pH sensors measure the hydrogen ion concentration of a solution. The greater the hydrogen ion concentration, the smaller the pH; when the pH is...

Precipitation Sensors

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....

Present Weather Sensors

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...

Recording Sensors

The sensors in this category have the ability to store measurements without the use of an external datalogger. For applications that require measurement of only...

Road Weather and Surface Condition Sensors

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...

Roadbed Water Content Sensors

Products for evaluating the volumetric and gravimetric water content of roadbed material both at the construction site and in the soil-test lab.

Snow Water Equivalent and Snow Depth Sensors

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,...

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 Volumetric Water Content Probes

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...

Soil Volumetric Water Content Profile Probes

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...

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....

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...

Strain Gages

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...

Turbidity Sensors

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...

Visibility Sensors

Our visibility sensors report meteorological observable range (MOR) for fog and snow. These sensors are ideal for stand-alone applications or in combination with automatic weather...

Water Level, Stage, and 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...

Water Samplers

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...

Water Temperature Probes

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...

Wind Speed and Wind Direction Sensors

Campbell Scientific offers a selection of quality wind sensors. Our wind sensors are used in research, air quality, and general purpose meteorological applications. Anemometer-only versions...

Wireless Sensors

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...


Does every sensor come with a calibration sheet?

Not every sensor comes with a calibration sheet. If a calibration sheet is included, it is listed in the “Ships With” section of the sensor’s product web page or it is specified when ordered.

Can a sensor cable be replaced?

Many times, but not always, a sensor’s cable can be replaced with a new cable. This is helpful if the original cable was damaged or if its length needs to be changed.

If the cable is attached to the sensor using a connector, Campbell Scientific will sell a replacement cable. For example, a 05106CBL-L is a replacement cable for a 05106-L. Replacement cables are listed in the “Replacement Parts” section of the Ordering information area of the product page.

If the cable is attached to a sensor through a user-accessible terminal block, a raw cable can be purchased to replace it. For example, to replace the cable on a 05103-L Wind Monitor, order the desired length of pn 972124 AWG 3 Twisted Pair Shielded Santoprene® Cable. As another example, the raw cable for a TE525-L Rain Gage is pn 966122 AWG 1 Twisted Pair Shielded Santoprene® Cable.

If the cable is an integral part of the sensor, the cable cannot be user replaced, and the sensor must be returned to Campbell Scientific. Some examples of sensors that fall into this category include the 107-L, 109SS-L, 229-L, CS547A-L, and CS650-L. For the process of returning equipment to Campbell Scientific, refer to the Repair and Calibration page.

If the cable attached to a sensor is too short, can more cable be spliced to the existing cable to make it longer?

Whenever possible, purchase a sensor with the desired cable length. Some sensors have a user-specified cable length, whereas other sensors have a set cable length.

Sometimes, an old cable can be replaced with a new, longer cable.

Generally, additional cable cannot be spliced onto the existing cable because:  

  • Some sensor cables have bridge completion resistors at the pigtail end
  • Some sensors are calibrated based on cable length
  • Sometimes the color in the insulation is not the same as that visible at the pigtail end
  • It is possible to introduce errors or malfunctions depending on the integrity of the splice

Splicing cable together increases the likelihood that water may enter the cable and cause shorting, corrosion, and some other potential issues, which in turn can cause measurement issues.

Because of the potential issues, do not splice any sensor cable without first contacting an application engineer at Campbell Scientific to discuss the sensor in detail.

Can a sensor cable be shortened?

Sometimes, an old cable can be replaced with a new, shorter cable.

Sometimes, an existing cable can be shortened by cutting the ends off. However, there are a few issues that could be encountered when doing this:

  • Some sensors have bridge completion resistors at the pigtail end.
  • Some sensors are calibrated to length.
  • Sometimes the color in the insulation may not be the same as that visible at the pigtail end.

Because of the potential issues, do not cut the ends off any sensor cable without first contacting an application engineer at Campbell Scientific to discuss the sensor in detail.

What are the different cable length choices available for Campbell Scientific sensors?

Most Campbell Scientific sensors are available as an –L, which indicates a user-specified cable length. If a sensor is listed as an –LX model (where “X” is some other character), that sensor’s cable has a user-specified length, but it terminates with a specific connector for a unique system:

  • An –LC model has a user-specified cable length for connection to an ET107, CS110, or retired Metdata1.
  • An –LQ model has a user-specified cable length for connection to a RAWS-P weather station.

If a sensor does not have an –L or other –LX designation after the main model number, the sensor has a set cable length. The cable length is listed at the end of the Description field in the product’s Ordering information. For example, the 034B-ET model has a description of “Met One Wind Set for ET Station, 67 inch Cable.” Products with a set cable length terminate, as a default, with pigtails.

If a cable terminates with a special connector for a unique system, the end of the model number designates which system. For example, the 034B-ET model designates the sensor as a 034B for an ET107 system.

  • –ET models terminate with the connector for an ET107 weather station.
  • –ETM models terminate with the connector for an ET107 weather station, but they also include a special system mounting, which is often convenient when purchasing a replacement part.
  • –QD models terminate with the connector for a RAWS-F Quick Deployment Station.
  • –PW models terminate with the connector for a PWENC or pre-wired system.
What are the different cable termination options available for Campbell Scientific sensors?

Many Campbell Scientific sensors are available with different cable termination options. These options include the following:

  • The –PT (–PT w/Tinned Wires) option is the default option and does not display on the product line as the other options do. The cable terminates in pigtails that connect directly to a datalogger.
  • In the –C (–C w/ET/CS110 Connector) option, the cable terminates in a connector that attaches to a CS110 Electric Field Meter or an ET-series weather station.
  • In the –CWS (–CWS w/CWS900 Connector) option, the cable terminates in a connector that attaches to a CWS900-series interface. Connection to a CWS900-series interface allows the sensor to be used in a wireless sensor network.
  • In the –PW (–PW w/Pre-Wire Connector) option, the cable terminates in a connector that attaches to a prewired enclosure.
  • In the –RQ (–RQ w/RAWS Connector) option, the cable terminates in a connector that attaches to a RAWS-P Permanent Remote Automated Weather Station.

Note: The availability of cable termination options varies by sensor. For example, sensors may have none, two, or several options to choose from. If a desired option is not listed for a specific sensor, contact an application engineer at Campbell Scientific for assistance.

Where are the available cable termination options listed for a particular sensor?

Not every sensor has different cable termination options. The options available for a particular sensor can be checked by looking in two places in the Ordering information area of the sensor product page:

  • Model number
  • Cable Termination Options list

If a sensor is offered in an –ET, –ETM, –LC, –LQ, or –QD version, that option’s availability is reflected in the sensor model number. For example, the 034B is offered as the 034B-ET, 034B-ETM, 034B-LC, 034B-LQ, and 034B-QD.

All of the other cable termination options, if available, are listed on the Ordering information area of the sensor product page under “Cable Termination Options.” For example, the 034B-L Wind Set is offered with the –CWS, –PT, and –PW options, as shown in the Ordering information area of the 034B-L product page.

Note: As newer products are added to our inventory, typically, we will list multiple cable termination options under a single sensor model rather than creating multiple model numbers. For example, the HC2S3-L has a –C cable termination option for connecting it to a CS110 instead of offering an HC2S3-LC model. 

Resources and Links

About Sensors

Our sensors are generally designed for long-term installation under adverse environmental conditions. Most of the sensors listed on our website 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, and hydraulic pressure transducers, are also available—either through our application 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 to 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.