Description
The Wireless Light and Colour Sensor features two separate apertures: one on the side of the box for ambient light measurements and one at the end of the box for directional light measurements for percent colour.
The ambient sensor measures:
- Lux: light energy from a point in a direction (per steridian, a solid angle) per second
- Illuminance: Light intensity per area, or brightness in the range our eyes perceive
- Irradiance: Power of the light per area. (Depends on wavelength as UV light has more energy than infra red)
- PAR (Photosynthetically Active Radiation): amount of light in the visible range 400 -700 nm available to stimulate plant growth.
- UV Index: 1 to 12 scale for the time light takes to cause skin damage. Larger numbers cause burns faster.
The spot sensor measures:
- RGB: light levels as a percent of the total of all colours measured
- White: Total ‘white’ light intensity as a function of the sensor (on a scale of 65,536)
Features
- Wirelessly connects to computers, Chromebooks, tablets, and smartphones
- Simply pair and go, no cables or adapters to manage
- Onboard memory enables the sensor to function as an independent datalogger
- Variable sampling rate for short, precise experiments or lengthy, multi-day data collection
- Bluetooth connectivity and long-lasting coin cell battery
- Indirect PAR measurements for biological studies
Applications
- Studying solar energy
- Reflection, absorption, and transmission of light through clear, opaque, and variously colored translucent mediums.
- Investigating polarization and reflectivity
- Modeling planetary motion
- Verifying the inverse square law
- Investigating insolation (solar radiation) and seasons
Product Specifications
| Spectral Response | 300 nm to 1100 nm |
| Illuminance Range | 0 to 131,000 lux |
| Irradiance Range | 0 to 1362 W/m2 |
| PAR Range | 1 to 2400 umol/m2/s |
| UV Index Range | 0 to 12 (typical in daylight) |
| RGB Range | 0 to 100% of combined colored light |
| Maximum Sample Rate | 2 Hz (ambient); 20 Hz (spot) |
| Battery | Coin cell |
| Connectivity | Bluetooth 4.0 |
