LI-COR LI-210R Photometric Sensors
Features
- Provides a spectral response that matches the CIE curve within +/-5% with most light sources
- Sensors are used to measure lighting conditions where the eye is the primary receiver
- Removable sensor simplifies installation and removal of the sensor
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The LI-210R Photometric Sensor measures light with the same sensitivity as a typical human eye. The photometric sensor is ideal for evaluating illumination in work areas, exhibits, interior lighting, and in public spaces.
Mechanics
The LI-210R measures light with a precision-filtered silicon photodiode that is sensitive to light centered in the visible spectrum. It responds to light with sensitivity that is close to the human eye, as described by the International Commission on Illumination (CIE) Standard Observer Curve. Cosine corrected to 82° incident angles for accurate measurements when the light source is not directly overhead.
- Absolute Calibration: ± 5% traceable to the U.S. National Institute of Standards and Technology (NIST)
- Sensitivity: Typically 30 μA per 100 klux
- Linearity: Maximum deviation of 1% up to 100 klux
- Response Time: Less than 1 μs (2 m cable terminated into a 604 Ohm load)
- Temperature Dependence: ± 0.15% per °C maximum
- Cosine Correction: Cosine corrected up to 82° angle of incidence
- Azimuth: < ± 1% error over 360° at 45° elevation
- Tilt: No error induced from orientation
- Detector: High stability silicon photovoltaic detector (blue enhanced)
- Sensor Housing: Weatherproof anodized aluminum housing with acrylic diffuser and stainless steel hardware; O-ring seal on the sensor base
- Size: 2.36 cm Diameter × 3.63 cm (0.93” × 1.43”)
- Weight: 24 g head; 60 g base/cable (2 m) with screws
- Cable Length: 2 m, 5 m, 15 m, 50 m (6.5’, 16.4’, 49.2’, 164’)
In The News
With A Modular Update, LI-COR Terrestrial Light Sensors Shine
For environmental professionals looking to measure light, the sun’s energy or photosynthetically active radiation, there is no better choice than LI-COR’s all-new line of terrestrial light sensors. The series, including the LI-190R, LI-200R and LI-210R, has been redesigned from the ground up and is more convenient, reliable and durable than ever before. 
 
The new design centers on a modular setup that lets users detach the sensor head from the base. This makes it possible to swap out sensor heads for calibration or to measure different light parameters. In addition, it adds to project flexibility, saving users time and money.
Read MoreClimate Change and Microplastics: Monitoring Lake Champlain
Most people go to Lake Champlain for its exceptional views and thrilling boating, but it’s also home to a wide variety of interesting aquatic research projects. From studying microplastics to thermal dynamics of the lake, Timothy Mihuc, director of the Lake Champlain Research Institute (LCRI) at the State University of New York at Plattsburgh (SUNY Plattsburgh), has spent his career studying aquatic ecosystems. 
 
 As an aquatic biologist, he’s the main investigator on Lake Champlain’s research studies while also managing their grants, employees, and their hands-on buoy work. 
 
 Over the years, LCRI has received a number of environmental grants that aid in its monitoring research.
Read MoreCurrent Monitoring after the Francis Scott Key Bridge Collapse
On March 26th, according to The Baltimore Sun , a 984-foot, 112,000-ton Dali lost propulsion and collided with a support column of the Francis Scott Key Bridge, collapsing the structure. Soon after the event, search and rescue, salvage crews, and other emergency responders were mobilized after the collision. 
 
As salvage efforts progressed in early April, NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS) responded to a request for real-time tidal currents data and deployed a current monitoring buoy—CURBY (Currents Real-time BuoY)—into the Patapsco River north of the Francis Scott Key Bridge.
Read More