Page 103 - Griffin CEA Catalog- 2026-2027

Apogee Light Meter

Apogee’s Daily Light Integral and NUTRIENTS & FERTILIZERS
Photoperiod meters are an elegant and
accurate solution for measuring Daily
Light Integral (DLI) and Photoperiod for
up to 99 days with scientific accuracy
and 0.1 hour resolution of DLI. View data
onscreen or download. Easily mounts to
camera tripod, provides 180° view, and is
contained in a rugged and splash-proof
housing for durability.
Item: 83-2800 Description: DLI-400
Item: 83-2801 Description: DLI-500 2026
Item: 83-2802 Description: DLI-600 2027

DLI-400 DLI-500 DLI-600
Spectral Measurement
Range (± 5 nm) 370 to 650 nm (sunlight only) 389 to 692 nm 383 to 757 nm
Proton Flux Display 0-4000 µmol m- s- 1 0-4000 µmol m- s- 1 0-4000 µmol m- s- 1
2
2
2
Range
Measurement
Frequency 3 minutes 3 minutes 3 minutes
99 days (DLI & Photoperiod), 10 99 days (DLI & Photoperiod), 99 days (DLI & Photoperiod),
Data Log Capacity days (30 min PPFD/ePPFD 10 days (30 min PPFD/ePPFD 10 days (30 min PPFD/ePPFD
averages) averages) averages)
Connectivity CSV file via USB-C data transfer CSV file via USB-C data transfer CSV file via USB-C data transfer
Operation 2 AAA batteries, life 6 mo. 2 AAA batteries, life 6 mo. 2 AAA batteries, life 6 mo.
-10 to 60 C; 0 to 100% -40 to 70 C; 0 to 100% -40 to 70 C; 0 to 100 %
Operating Environment
relative humidity relative humidity relative humidity
Ingress Protection IP65 IP65 IP65
1
1
Mounting Compatibility Brass ⁄4-20 threaded mount Brass ⁄4-20 threaded mount Brass ⁄4-20 threaded mount
1
Warranty 4 years against
Warranty 4 years against defects Warranty 4 years against defects
Warranty defects in materials and
in materials and workmanship in materials and workmanship
workmanship
CEA/HYDRO CATALOG | 10 3