植物光度 (陸上、水中 兩用，水深 1 m )  → 直接電腦，線上觀查，記錄。

PAR Sensor with 1.9 cm (3/4") collector.   

Measures scalar PAR (400-700 nm) irradiance and connects directly with a PC workstation or  laptop computer for live display and datalogging. Ideal for general laboratory or field  use. 

　

　

The sensor make it possible to accurately measure PAR in aquatic or dry environments.   The electronics are miniaturized to fit entirely in the handle of the light pipe and the entire sensor is submersible to 1 meter depth for 30 minutes.

　

The small size and convenient hand wand ensures that  sensors provide accurate light measurements from virtually all directions in the field or in laboratory.  The long light pipe is particularly convenient when used in growth chambers for organisms such as photosynthetic bacteria, plankton, kelp, and higher plants.   The 1.27 cm diameter collector on the sensor  (digital output) is specifically designed for insertion in vials of the type commonly used in photosynthetrons.

Software.  The sensor  (digital output) is powered by the serial port of a PC.  Software is included with each sensor and is compatible with all Microsoft Windows platforms, including Windows 95, 98, 2000, NT , ME and XP. Data are in a digital format and transfered to the PC or laptop at 9600 baud.  The user may configure this software to display in Quanta or MicroEinsteins.  

Features:

• Measures photosynthetically active light from all directions

• Wet or dry operation

• Sensitive

• PC port powered

• Easily portable

• PC software included

Specifications

 

Irradiance Collector: 1.9 cm. (3/4") diameter solid Teflon sphere optically connected to the detector, filter, and amplifier housing by a 25 cm (10") long 6.3 mm (.26") diameter non-toxic, fused-resin coated stainless steel shaft encasing a quartz light pipe.

　

Photodetector: Blue-enhanced high stability silicon photovoltaic detector with dielectric and absorbing glass custom filter assembly.

　

Spectral Response: Equal quantum response 400 to 700 nm (PAR, Photosynthetically Active Radiation), response optimized to better than +10%. Individual detector response plot optionally available.

　

Sensitivity: Nominal sensitivity 1 volt = 1.5x10¹⁷ quanta/(cm²  sec).  Noise level typically less than 1 millivolt; temperature coefficient of the dark signal is less than 10 microvolts/ C, and response temperature coefficient is less than 0.15%/ C.

　

Calibration: Each sensor contains internally imbedded calibration factors for both wet and dry measurements. We calibrates sensors using procedures and source Standard of Spectral Irradiance traceable to NIST.

　

Power Requirements: Digital Output:  No batteries are required. All power is supplied by the host computer’s serial port. . 

                   附 超强軟體

• Microsoft Windows^®-based acquisition and analysis program
• Microsoft Access^® compatible file structure
• Interactive downcast, upcast and dark marking
• Time series, spectral and profile plotting 
• Linear or logarithmic scale for time series
• Exponential regression for profiles 
• Calculate attenuation coefficients in accordance with SeaWiFS protocols 
• Dark correction 
• Interactive zoom feature 
• Graph customization including selectable fonts, gridlines, data labels, etc.
• Data and graphics may be exported to a variety of applications