Get precise light intensity measurements

Measures light intensity for frequencies relevant for photosynthesis. This sensor has a measurement range of 0 to 2500 umol/m2/sec over wavelengths from 400 to 700 nm. Enclosed in a anodized aluminum housing with acrylic diffuser and o-ring seal, this model has a 3m cable. A light sensor bracket and light sensor level are recommended.

The photosynthetically active radiation (PAR) smart sensor is designed to work with HOBO® stations. The smart sensor has a plug-in modular connector that allows it to be added easily to a station. All calibration parameters are stored inside the smart sensor, which automatically communicates configuration information to the logger without any programming, calibration, or extensive user setup.

Also available in a wireless model for use with the HOBOnet Field Monitoring System.

Features

• Measurement range of 0 to 2500 umol/m2/sec over wavelengths from 400 to 700 nm
• Plug-n-play smart sensor
• Compatible with RX, H21, H22, and U30 family loggers

 

Measurement Range	0 to 2500 μmol/m2/sec, wavelengths 400 to 700 nm (see Plot A in User Manual)
Accuracy	±5 μmol/m2/sec or ± 5%, whichever is greater in sunlight; Additional temperature induced error ±0.75 μmol/m2/sec/°C from 25°C (0.42 μmol/m2/sec/°F from 77°F)
Angular Accuracy	Cosine corrected 0 to 80 degrees from vertical; Azimuth Error <2% error at 45 degrees from vertical, 360 degree rotation
Resolution	2.5 μmol/m2/sec
Drift	< ±2% per year
Operating Temperature Range	-40° to 75°C (-40° to 167°F)
Environmental Rating	Weatherproof
Housing	Anodized aluminum housing with acrylic diffuser and O-ring seal
Dimensions	4.1 cm height x 3.2 cm diameter (1 5/8 x 1 1/4 in)
Weight	120 g (4 oz)
Bits per Sample	10
Number of Data Channels*	1
Measurement Averaging Option	Yes
Cable Length Available	3.0 m (9.8 ft)
Length of Smart Sensor Network Cable*	3.0 m (9.8 ft)
CE	The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).

*A single HOBO station can accommodate 15 data channels and up to 100 m (328 ft) of smart sensor cable (the digital communications portion of the sensor cables).