The Apogee Instruments' DLI-500 is an elegant, simple-to-use device for spot checking photosynthetically active radiation (PAR; 400-700 nm) levels and measuring daily light integral (DLI) and photoperiod under all light sources. DLI refers to the total amount of PAR or extended PAR (ePAR) incident on a plane in a 24-hour period, expressed in units of moles per square meter per day (mol m-2 d-1). Photoperiod is the total amount of time in which PAR or ePAR is incident on a plane during a 24-hour period and is expressed in units of hours (h). PAR, DLI, and photoperiod influence plant growth and development, and they are often measured in greenhouses and growth chambers to aid in light management and decision making. The DLI-500 is accurate under all light sources, but if you are looking for a low-cost option accurate under sunlight and some broadband light sources only, see our DLI-400 model.
Specifications | |
---|---|
Field of View | 180˚ |
Spectral Range | 389 to 692 nm |
Data Log Capacity | 99 days (DLI & Photoperiod), 10 days (30 min PPFD/ePPFD averages) |
Operating Environment | -40 to 70 C; 0 to 100 % relative humidity |
Meter Dimensions | 1.91 W x 2.31 H x 0.93 D (inches) |
The Apogee Instruments' DLI-500 is an elegant, simple-to-use device for spot checking photosynthetically active radiation (PAR; 400-700 nm) levels and measuring daily light integral (DLI) and photoperiod under all light sources. DLI refers to the total amount of PAR or extended PAR (ePAR) incident on a plane in a 24-hour period, expressed in units of moles per square meter per day (mol m-2 d-1). Photoperiod is the total amount of time in which PAR or ePAR is incident on a plane during a 24-hour period and is expressed in units of hours (h). PAR, DLI, and photoperiod influence plant growth and development, and they are often measured in greenhouses and growth chambers to aid in light management and decision making. The DLI-500 is accurate under all light sources, but if you are looking for a low-cost option accurate under sunlight and some broadband light sources only, see our DLI-400 model.
Specifications | |
---|---|
Field of View | 180˚ |
Spectral Range | 389 to 692 nm |
Data Log Capacity | 99 days (DLI & Photoperiod), 10 days (30 min PPFD/ePPFD averages) |
Operating Environment | -40 to 70 C; 0 to 100 % relative humidity |
Meter Dimensions | 1.91 W x 2.31 H x 0.93 D (inches) |