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’)
Select Options
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 More
Carbon and Nutrient Monitoring in the Great Lakes Using Satellite Observations
Carbon and nutrients are the foundation of lake food webs and play an important role in the chemical and physical processes that shape aquatic ecosystems and various lake dynamics. Studying these cornerstones can help improve understanding of other lake conditions like harmful algal blooms, hypoxia, and phytoplankton community composition. The way in which these characteristics are monitored varies, though many rely on a proxy approach wherein parameters are extrapolated from the measurement of a different parameter. An assistant professor at Cleveland State University, Brice Grunert, is working to improve current strategies and take a satellite approach to monitoring the Great Lakes.
Read More
Restoring North Texas Streams to Historical Flows
North Texas is one of the fastest-growing regions in the state, an area that is expected to face increasing water needs. In order to meet these demands, the Upper Trinity Regional Water District ( UTRWD ) is building Lake Ralph Hall near Ladonia in southeast Fannin County, Texas. The lake has been in the works since 2003, with construction finally beginning in 2021. The population of the UTRWD is expected to grow 5-fold over the next 50 years, leading to increased water use. Ed Motley, Program Manager with the UTRWD stresses that even with conservation and reuse, new sources like Lake Ralph Hall are essential to meeting near-term and long-term water needs to support regional growth.
Read More
