Measure Photosynthetically Active Radiation
The SQ-521 is a digital sensor with SDI-12 communication
protocol. The sensor incorporates a rugged, self-cleaning sensor
housing design, anodized aluminum body with acrylic diffuser, and
high-quality cable terminating in a 3.5mm stereo jack for easy
connection to METER dataloggers. Typical applications include PPFD
measurement over plant canopies in outdoor environments,
greenhouses, and growth chambers, and reflected or under-canopy
(transmitted) PPFD measurements in the same environments.
| Specifications |
Specteral Range
|
389 to 692 nm |
| Accuracy |
± 5nm |
Directional (cosine)
Response |
± 2 % at 45°, ± 5 % at 75° zenith angle |
| Response Time |
Less than 1 ms |
| Long-term Drift |
Less than 2 % per year |
| Calibrations and Conversions |
Sensors are calibrated for outside use
5.0 µmol m-2 s-1 per mV |
| Power |
None, self powered |
| Operating Environment |
-40 to 70 C; 0 to 100 % relative humidity; can be submerged in
water up to depths of 30 m |
| Cable Length |
5 m |
| Cable connector Types |
3.5 mm "stereo" plug |
| Sensor Dimensions |
30.5 mm diameter, 37 mm height |
| Data Logger Compatibility (not exclusive) |
ZL6 & ProCheck |
| Warranty |
One year, parts and labour |
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Labcell Limited
exclusively supply and support METER products in the UK &
Ireland.
Non UK/Ireland Customers, please contact METER Environment at:www.metergroup.com/environment/
