LI-COR LI-193 Underwater Spherical PAR Sensor
Features
- Uses computer-tailored filter glass to achieve the desired quantum response
- Calibration is traceable to NIST
- Features corrosion-resistant, rugged construction for use in up to 350m depths
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The LI-COR LI-193 Underwater PAR Sensor gives an added dimension to underwater PAR measurements as it measures photon flux from all directions. This measurement is referred to as Photosynthetic Photon Flux Fluence Rate (PPFFR) or Quantum Scalar Irradiance. This is important, for example, when studying phytoplankton, which utilize radiation from all directions for photosynthesis. The LI-193 features a high sensitivity optical design and compact, rugged construction for use in freshwater or saltwater and pressures up to 493 psi or 350 meter depths.
- Absolute Calibration: +/-5% in air traceable to NBS
- Sensitivity: Typically 7 uA per 1000 umol s-1 m-2 in water
- Linearity: Maximum deviation of 1% up to 10,000 μmol s-1 m-2
- Stability:< +/-2% change over a 1 year period
- Response Time: 10 us
- Temperature Dependence: +/-0.15% per C maximum
- Angular Response:< +/-4% error up to +/- 90 degrees from normal axis
- Azimuth:< +/-3% error over 360 degrees at 90 degrees from normal axis
- Detector: High stability silicon photovoltaic detector (blue enhanced)
- Sensor Housing: Corrosion resistant metal with acrylic diffuser for both saltwater and freshwater applications
- Waterproof: withstands 500 psi pressure (350 meter depths)
- Size: 6.1cm Dia. globe; 3.18cm dia. housing; 10.7cm H
- Weight: 142g
- Mounting: (3) 6-32 holes are tapped into the base for use with the 2009S Lowering Frame or other mounting devices
- Cable: Requires 2222UWB Underwater Cable
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