SPAR: Irradiance
The SPAR is used to measure and record the activation of photosynthesis in fresh and salt water (radiation with wavelengths between 400 nm and 700 nm).
Flat LI-cor sensor
Light and compact
Wireless fast configuration and data collection
Datasheet
Features and benefits
SPAR enables to measure and record active radiation for photosynthesis in fresh and salt waters (radiation with wavelengths between 400nm and 700nm).
The amount of light energy received is expressed in µmol.m-2.s-1
SPAR is available in 2 versions:
with a flat LI-cor sensor
with a spherical LI-cor sensor
Easy to deploy:
Light and compact
Fast wireless configuration and data collection thanks to a communication interface (Inductive Data Pencil) connected to the USB port of a PC using Winmemo software
Examples of use
Active radiation for photosynthesis in fresh and salt waters
Sensors
Radiation in air channel
Radiation in shallow water channel
Radiation in deep water channel
Technical data
Maximum depth: 300m
Operating temperature: -10°C / 45°C
Time: internal clock with calendar, clock drift 1min/month
Sampling rate: programmable from 1 second to 99 hours
Autonomy:
Memory: 1Mo with data compression
Energy: 12 000 days (depending on sampling rate)
Radiation in air channel:
Measurement range: 0 – 2000 µmol s-1 m-2
Rsolution (12 bits): 0.5 µmol s-1 m-2
Radiation in shallow water channel:
Measurement range: 0 – 100 µmol s-1 m-2
Resolution (12bits): 0,024 µmol s-1 m-2
Mechanical features:
Housing: tube in plastic (cap in Ketron)
Dimensions: housing Ø40 x 183 mm (probe Ø 5x 130 mm)
Weight in air: Flat SPAR: 641 g / spherical SPAR: 588g
