Sensors Robust sensors for long- and short-term installations

About Sensors

Campbell Scientific sensors measure a broad array of parameters for environmental, water resource, research, and industrial applications. The sensors output electrical signals, which are transmitted to data loggers. In addition to our extensive line of sensors, almost any commercially available sensor can be measured by our data acquisition systems.

Product Line

Air Temperature Sensors

Campbell Scientific offers a variety of sensors for measuring air temperature. The electrical signals transmitted from the sensors to our data loggers can be converted to different units of measuremen...read more

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 RH sensor, while air temperat...read more

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. They are typicall...read more

Ceilometers

Campbell Scientific offers ceilometers that use lidar (light detection and ranging) technology to measure cloud height, vertical visibility, and mixing layer height. While they are best known for thei...read more

All-in-One Weather Sensors

Basic weather sensors measure six parameters: wind speed and direction, precipitation, barometric pressure, temperature, and relative humidity. These compact, multi-function sensors have no moving par...read more

Digital Cameras

High-resolution digital cameras with video capabilities are used to take still images or videos based on an internal timer, motion detection, or a trigger from another device. The images or videos are...read more

Dissolved Oxygen Sensors

Dissolved oxygen sensors measure the amount of oxygen present in a medium, typically water. The sensors generate signals proportional to the amount of oxygen present, which are then transmitted to dat...read more

Lightning Warning Sensors

Electric field sensors measure the local, atmospheric electric field at the earths’ surface and the fluctuations in field strength. By monitoring the field strength, the potential for cloud-to-ground...read more

Electrical Current Sensors

Electrical current sensors detect the flow of current along an electrical wire by measuring (or sensing) the magnetic field that is generated by the flow of electrical current. The sensors output sign...read more

Evaporation Gauges

Evaporation gauges determine the evaporation rate by measuring the changing water level in an evaporation pan. The gauges consist of a float, pulley, and counterweight attached to a potentiometer moun...read more

Freezing-Rain and Ice Detectors

Freezing-rain and ice detectors 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, to keep ic...read more

Fuel Moisture and Fuel Temperature Sensors

Fuel moisture and fuel temperature sensors emulate and measure the moisture content and temperature of similarly sized twigs on the forest floor. The sensors are typically used as part of larger syste...read more

Global Positioning System (GPS) Sensors

GPS sensors are receivers with antennas that use a satellite-based navigation system with a network of 24 satellites in orbit around the earth to provide position, velocity, and timing information.read more

Leaf Wetness Sensors

Campbell Scientific offers two types of leaf wetness sensors to measure the wetness of leaves: surface contact and electrical resistance. Surface contact sensors measure the electrical resistance of a...read more

Redox (ORP) Sensors

ORP sensors measure the oxidation-reduction potential—the tendency to gain or lose electrons when a solution comes in contact with a chemical substance. ORP measurements are used to ensure that a solu...read more

pH Sensors

Campbell Scientific pH sensors measure the level of pH in sample solutions by measuring the activity of the hydrogen ions in the solutions. This activity is compared to pure water (a neutral solution)...read more

Precipitation Sensors

Campbell Scientific offers several types of sensors to measure precipitation: tipping bucket rain gages, siphoning tipping bucket rain gages, heated rain gages, and snowfall adapters. Users often sele...read more

Present Weather Sensors

Present weather sensors use a laser-based technology to measure the size and velocity of water droplets in the air to determine visibility, measure precipitation rate, and identify precipitation type...read more

Snow Water Equivalent and Snow Depth Sensors

Campbell Scientific offers two types of sensors for snowpack applications: snow water equivalent (SWE) sensors and snow depth sensors. SWE sensors measure the amount of water contained within a snowpa...read more

Soil Heat Flux Sensors

Soil heat flux sensors may consist of several thermocouples whose measurements are averaged, a single thermopile, or a single thermopile with a film heater. These sensors measure the rate of energy tr...read more

Soil Temperature Sensors

Soil temperature sensors come in a variety of designs using thermistors, thermocouples, thermocouple wires, and averaging thermocouples. The electrical signals transmitted from the sensors to our data...read more

Soil Moisture, Temperature, and Electrical Conductivity Sensors

Soil volumetric water content sensors (sometimes referred to as soil moisture sensors) measure the water content of soil. These sensors can be used to estimate the amount of stored water in a profile...read more

Soil Water Potential Sensors

Campbell Scientific offers soil water potential sensors that measure soil water potential via two methods: heat dissipation or electrical resistance. The sensors determine the energy status of the wat...read more

Solar Radiation Sensors

The solar radiation sensors that Campbell Scientific offers come in a variety of designs: pyranometers, net radiometers, quantum sensors, and pyrheliometers. These sensors measure various aspects of t...read more

Surface Temperature Sensors

Campbell Scientific offers two types of surface temperature sensors: infrared temperature (non-contact) and surface contact. Infrared temperature sensors measure the surface temperature of an object o...read more

Infrared Gas Analyzers

Campbell Scientific offers both open-path and closed-path infrared gas analyzers for measuring carbon dioxide and water vapor. Campbell Scientific also offers a closed-path analyzer for measuring meth...read more

Turbidity Sensors

Turbidity sensors measure the amount of light that is scattered by the suspended solids in water. As the amount of total suspended solids (TSS) in water increases, the water’s turbidity level (and clo...read more

Visibility Sensors

Campbell Scientific offers visibility sensors that use infrared forward-scatter technology. These sensors report meteorological observable range (MOR) for fog and snow. Visibility sensors are often us...read more

Water Conductivity Sensors

Water conductivity sensors are used in water-quality applications to measure how well a solution conducts an electrical current. This type of measurement assesses the concentration of ions in the solu...read more

Water Level, Stage, and Flow Sensors

Campbell Scientific offers a variety of sensors to measure water level, stage, and flow: pressure transducers, shaft encoders, radar ranging sensors, sonic ranging sensors, and bubblers. Users often s...read more

Water Temperature Sensors

Campbell Scientific offers a variety of sensors for measuring water temperature. The electrical signals transmitted from the sensors to our data loggers can be converted to different units of measurem...read more

Wind Speed and Wind Direction Sensors

Wind vanes measure wind direction and are often used with anemometers, which measure wind speed. Campbell Scientific offers a variety of anemometer designs: cup, propeller, ultrasonic, sonic, and lida...read more