VH400 Soil Moisture Sensor Probe Specifications
Power consumption: < 13mA
Supply Voltage: 3.5V to 20 VDC.
Dimensions See drawing.
Power on to Output stable: 400 ms
Output Impedance: 10K ohms
Operational Temperature: -40ºC to 85ºC
Accuracy at 25°C: 2%
Output: 0 to 3V related to moisture content
Shell Color: Red
Voltage Output Curves: Curves, Piecewise...
A miniature, value-priced, waterproof data logger for temperature and light monitoring applications; stores 52K measurements.
IMPORTANT INFORMATION
Requires HOBOware software and either an Optic USB Base Station or a HOBO Waterproof Shuttle (U-DTW-1).
HOBOware Pro is required when using the HOBO Waterproof Shuttle. See compatible items below.
The LaiPen LP 110 measures leaf area index (LAI), defined as the one-sided green leaf area per unit area of ground surface (m2 per m2) in broadleaf tree canopies. The LaiPen LP 110 calculates LAI and other canopy structure attributes from solar radiation measurements made with a wide-angle optical sensor. Measurements made above and below the canopy are used to determine canopy light interception at five angles, from which LAI is calculated using a radiative transfer model in plant canopies.
The LaiPen LP 110 can operate in two operating modes: Single-sensor mode: the reference measurement is taken before, after or during the measurement with the same instrument; Two-sensor mode: a second instrument is used for automatic recording of the reference signal.
The LaiPen LP 110 measures leaf area index (LAI), defined as the one-sided green leaf area per unit area of ground surface (m2 per m2) in broadleaf tree canopies. The LaiPen LP 110 calculates LAI and other canopy structure attributes from solar radiation measurements made with a wide-angle optical sensor. Measurements made above and below the canopy are used to determine canopy light interception at five angles, from which LAI is calculated using a radiative transfer model in plant canopies.
The LaiPen LP 110 can operate in two operating modes:
Single-sensor mode: the reference measurement is taken before, after or during the measurement with the same instrument;
Two-sensor mode: a second instrument is used for automatic recording of the reference signal.
LAIPEN MEASURES Leaf Area Index (LAI) Photosynthetically Active Radiation (PAR): Photosynthetically Active Radiation measured as Photosynthetic Photon Flux Density (PPFD)
APPLICATIONS Studies of canopy growth and productivity Studies of forest dynamism Research on air pollution or insect impact on foliage health Great for rapid, repeated measurements and for large plant screening programs Remote sensing Global carbon cycle
SOFTWARE Comprehensive software with data collection, analysis and visualization USB and Bluetooth communication Visualization and data transfer routines to Microsoft Excel Regular firmware updates Integrated GPS module
Accessories Mini computer Small laptop computer (type according to current market availability). Standard tripod Tripod stand that offers the flexibility to choose the ideal location for automatic readings in open terrain. Carrying rod Rod for measuring above bushes and undergrowth. Spare USB communication cable Spare USB cable that allows the connection between the "pen" type devices and a PC (the device is delivered with a USB cable, which is included in the price of the device).
Key Features
High sensitivity
Built-in sensor for measuring foliage tilt
Five different acceptance angle measurements – light is taken from five different zenith angles to create one reading
Fast and easily repeatable measurements with instant readings
Manual and automatic measurement
Lightweight, rugged and battery powered with simple two-button operation
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The LaiPen LP 110 measures leaf area index (LAI), defined as the one-sided green leaf area per unit area of ground surface (m2 per m2) in broadleaf tree canopies. The LaiPen LP 110 calculates LAI and other canopy structure attributes from solar radiation measurements made with a wide-angle optical sensor. Measurements made above and below the canopy are used to determine canopy light interception at five angles, from which LAI is calculated using a radiative transfer model in plant canopies.
The LaiPen LP 110 can operate in two operating modes: Single-sensor mode: the reference measurement is taken before, after or during the measurement with the same instrument; Two-sensor mode: a second instrument is used for automatic recording of the reference signal.
