LI190R-L

Quantum (PAR) Sensor
LI190R-L

LI190R-L

RetiredConfigurable

Quantum (PAR) Sensor

Pricing

Sign in for pricing

Configuration

Sign in for option pricing

Select a configuration to add to your quote

Model:
LI190R-L
Item Number:
31982
Warranty:
1 year
Lead time:
14 days
Compliance:
requires LI2003S

Overview

LI190R-L LI-COR Quantum Sensor

The LI190R Quantum Sensor, manufactured by LI-COR, accurately measures photosynthetic photon flux density (PPFD), which is the number of photons in the 400 to 700 nm waveband incident per unit time on a unit surface. It uses a silicon photovoltaic detector mounted in a cosine-corrected head. A shunt resistor in the sensor’s cable converts the signal from microamps to millivolts, allowing these sensors to be measured directly by a Campbell Scientific data logger.
.

Key Advantages

Accurate, Versatile
Compatible with most Campbell Scientific data loggers

Technical Description

The LI190R measures solar radiation with a silicon photovoltaic detector mounted in a cosine-corrected head. A shunt resistor in the sensor’s cable converts the signal from microamps to millivolts, allowing the LI190R to be measured directly by a Campbell Scientific data logger. The LI190R accurately measures Photosynthetic Photon Flux Density (PPFD), which is the number of photons in the 400 to 700 nm waveband incident per unit time on a unit surface. Because PPFD describes photosynthetic activity, the LI190R is ideal for growth chambers and greenhouses. 

Benefits

  • Ideal for growth chambers and greenhouses
  • Measures photosynthetic photon flux density (PPFD) in both natural and artificial light
  • Compatible with the CWS900-series interfaces, allowing it to be used in a wireless sensor network

Specifications

Sensor
Silicon photovoltaic detector mounted in a cosine-corrected head
Measurement Description
Measures photosynthetic photon flux density (PPFD) in both natural and artificial light
Spectral Range
400 to 700 nm
Calibration
±5% traceable to the U.S. National Institute of Standards Technology

(NIST)

Sensitivity
Typically 5 to 10 μA per 1000 μmoles s-1 m-2
Linearity
Maximum deviation of 1%

(up to 10,000 μmole s-1 m-2)

Shunt Resistor
604 Ω, 0.1%, 25 ppm
Long-Term Stability
< ±2% change over a 1 year period
Response Time
< 1 μs
Temperature Dependence
0.15% per °C

(maximum)

Cosine Correction
Cosine corrected up to 82° angle of incidence
Operating Temperature Range
-40° to +65°C
Relative Humidity Range
0 to 100%

(non-condensing)

Detector Description
High-stability silicon photovoltaic

(blue enhanced)

Sensor Housing Description
Weatherproof anodized aluminum case with acrylic diffuser and stainless-steel hardware; O-ring seal on the removable base and cable assembly
Diameter
2.36 cm

(0.93 in.)

Height
3.63 cm

(1.43 in.)

Weight
84 g

(2.96 oz)

Related Resources

Case Studies

Documents

Connect With Us

envelope icon
Phone Numbers
General: (435) 227-9000
location icon
Corporate Address
815 W 1800 N
Logan, UT 84321
send icon
Email Address
sales@campbellsci.com

As a trusted leader in measurement systems for more than 50 years, our top priority at Campbell Scientific has always been to provide the most accurate, reliable data for research and industry.