Description
With this simple and robust instrument you can measure the light absorption (PAR or photosynthetically assimilable light) of your plant or crop.
DLI & PAR sensor elements
The reading offered will be the light intensity within the optical band that can be assimilated by plants for their photosynthesis processes, which is between 400 and 700 nm.

PAR sensor applications:
- Outdoor crops
- Indoor crops (greenhouses)
- Crops with artificial light sources to promote growth (LED, High Pressure Sodium, Metal Halide, Halogen or Fluorescent).
Profits are equally valid for the agricultural industry and for the maintenance of sports turf.
Types of measurement
In favour of facilitating different options, the sensor allows to measure:
- Concrete snapshot readings.
- Average light intensity reading in an area.
- Average light intensity over the course of the day (DLI, the sensor automatically takes readings for the computation of the average value, automatically and without the need for complex computers or software).
Light meter specifications
| Range | PAR: 0.0 to 6500 µmol m-2 s -1 , 400 to 700nm |
| Resolution | 0.1 µmol m-2m-2 s -1 from 0.0 to 99.9 1 µmol m-2 s -1 from 100 to 6,500 |
| Accuracy | ±5% (each meter is factory calibrated) |
| Azimuthal error | ±1% over 360 |
| Half-time daily (DLI) |
Measurements are taken every 3 minutes. |
| Water resistance | IP-65 |
| Temperatures for operation |
32-130°F (0-55°C) with 0-100% RH (relative humidity) |
| Battery | CR2032 3V lithium |
| Size and weight | 14.6 x 4.5 x 1.8 cm and 77 grams. |
The equipment is very convenient and easy to use, and you can take it with you everywhere you go.
Why is it important to measure DLI?
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Optimises photosynthesis and therefore the growth of the plants.
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It helps to determine the need for supplementary lighting in greenhouses or shaded fields.
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On sports turf, it allows assessing the feasibility of natural grass in stadiumsshaded areas or seasons of low light.
Product reference for orders: PT-253
Complete data sheet here.







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