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Photometers & Colorimeters
SIM-2 Plus Spectral Irradiance Meter
SIM-2 Plus is an upgraded version of SIM-2. Equipped with WiFi and Bluetooth, SIM-2 Plus facilitates remote measurement and data transmission function which is very useful for locations hard or hazardous to reach. Most importantly, SIM-2 Plus enhances the sensitivity and range of illuminance measurement by 2 magnitudes, i.e., 0.1lx to 200klx.

Measurable Quantities   

    Spectral Power Distribution P(λ)  
    Spectral Irradiance E(λ)  
    Illuminance E and Irradiance Ee  
    Chromaticity Coordinates: (x, y), (u, v), (u’, v’)  
    Color Rendering Index (CRI) and R1~R14  
    Scopic and Photopic Ratio (S/P)  
    Standard Deviation of Color Matching (SDCM)  
    Photosynthetic Photon Flux Density (PPFD): The number of photons that strikes a surface per unit time within the 400nm – 700nm wavelength range
    Photosynthetic Active Radiation (PAR): The spectral range of solar radiation from 400nm – 700nm that photosynthetic organisms are able to use for photosynthesis. It can be expressed as the energy from the radiation in this range

Customized features can be designed in. Please contact us to discuss your specific requirements.


    High Colorimetric Accuracy: Zero V(λ) mismatch error
    High Photometric Linearity: Highly linear over a wide dynamic range. Less than 0.3% deviation
    High Photometric Sensitivity: Can detect illuminances as low as 0.1lx
    Wide Dynamic Range: Illuminance measurement range of 0.1lx to 200klx
    Modern Design: Powerful software for remote control, report printing, and communication with computer via USB or WiFi
    Multi-Functional: Additional functionality, such as data comparison, multiple detectors, and portability
    Wireless Communication: The detector and the display can communicate via USB or Bluetooth
    Easy to Use: All key quantities are acquired within milliseconds by one-touch
    Portable: Compact size with 4.3” LC display and 4GB SD card for data storage




Software Design