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In-situ Marine Optics
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In-situ Marine Optics - Model PAR -Underwater PAR Sensor for Autonomous Systems

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The Photosynthetically Active Radiation (PAR) sensor by In-situ Marine Optics is tailored for underwater applications, offering integration capabilities with autonomous logging systems and vertical profiling packages. This sensor is essential for researchers and professionals aiming to measure the light energy available for photosynthesis in aquatic environments accurately. The device is complemented by the IMOview software, a GUI application designed for Microsoft Windows, which provides users with the ability to configure the system and visualize real-time data through serial communication. Such features make the sensor a versatile choice for complex underwater studies where accurate and reliable data acquisition is critical. Its design and integration capabilities support a wide range of applications, ensuring compatibility with various data collection and logging infrastructures.
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NIST traceable calibration

A Photosynthetically Active Radiation sensor designed for underwater applications, including integration into autonomous logging systems and vertical profiling packages.

 

  •  Benthic light availability monitoring
  •  Numerically optimised optics for superior quantum response
  •  High accuracy, large dynamic range
  •  Internal calibration coefficient storage
  •  Anti-fouling copper face-plate and high torque wiper
  •  Internal Real Time Clock, Tilt and Temperature
  •  Pin-compatible with standard oceanographic equipment
  •  Australian designed, manufactured, calibrated and
    serviced
 

Detector: Si photodiode
Bandpass: 400 – 700 nm
Quantum response: <5% RMS
Irradiance cosine response: <3% (0 – 60°)
Calibration: NIST traceable radiometric calibration
Range: 0 – 2300 µmol m-2 s-1 (factory customisable)
Resolution: 1.3e-6 µmol m-2 s-1

Acquisition: 24 bit ADC
Sampling Rate: configurable up to 10 Hz
Protocol: RS-232 @ 19,200 bps
NMEA-style output: yes
Input Voltage: 7 – 28 VDC
Power Consumption: 10 mA @ 12 VDC (150 mA during wipe)
Analog Output: 0 – 4.97 VDC, 2.2 mV RMS
Connector: Micro WET-CON MCBH6M

Length: 140 mm (connector + 43 mm)
Diameter: 67 mm
Weight: 630 g in-air, 150 g in-water
Materials: Acetal, Copper, PTFE, SS316
Depth Rating: 300 m
Operating Temperature: 0 to +50 °C