Biospherical Instruments Inc.PUV-2500 underwater ultraviolet-visible light radiation meterIt is a multi-channel profile measurement radiator for underwater use, which canMeasure downward (Cosine) radiation, upward chlorophyll fluorescence, pressure/depth and water temperature in 7 bands.The maximum working depth is 300 m.Downward radiation includes6 key wavelengths of ultraviolet (UV) radiation: 305, 313, 320, 340, 380 and 395 nm,as well asPhotosynthetic effective radiation (PAR, 400-700 nm), using 7 high-precision transistor photodetectors to measure.Upward chlorophyll fluorescence was measured using a separate photodetector.Users can also choose to configure 8 downlink radiation sensors, without uplink radiation sensors.The instrument combines accurate UV measurement with high-speed data acquisition, leading technology and durable instruments. PU V-2500Work with PROFILER operation and data acquisition software based on Windows operating system.The software can display the measured data of multiple channels in full color graphics, with a friendly interface and easy operation.The data is stored in Microsoft Access format and can be easily imported into other programs such as EXCEL. |  |
Key Features
Come7downward irradiance measurement channel and upward irradiance measurement channel for each (optional 8) band
ComeIncludes sensors that measure pressure/depth (maximum 350 m) and water temperature
ComeHigh-precision transistor sensor with special UV interference filter/photodetector
ComeUsers can choose PUV-2510 water surface radiation meter
ComeThe instrument is low in power consumption and lightweight, and can be manually dragged and prevented from measuring.
| Because the PUV-2500 is very light and compact, it can be installed on an underwater bracket for vertical section analysis or directly (without the underwater bracket) to measure.When using the latter, the instrument will drift underwater, which will prevent the impact of the ship's shadow on the measurement results. |
Use winch to drag and drop the PUV-2500.Since the PUV-2500 is very light, it can also be dragged and dropped manually. |
PU V-2510Surface radiator When configuring the PUV-2500, users often add a water surface reference radiator PUV-2510.The PUV-2510 is a surface downstream radiation sensor that works with the underwater sensor, but it works in the air.The PUV-2510 does not have temperature correction, but it can be used for short-term measurements of terrestrial UV-PAR radiation. |
The PUV-2510 can be used as a water surface reference radiator, or can be used to measure UV and PAR on the land surface alone. |
calibration
Calibration was performed using the National Institute of Standards (NIST) traceable certification method.Calibration can also be performed using a high resolution scanning spectroradiometer.Calibration is recommended once a year.
software The working software PROFILER is fully compatible with Windows 98, NT, 2000 and XP systems, and performs real-time online measurements.Users can set the acquisition speed, average time, profile settings, etc.When performing a section, the software displays 3 figures (time-changing diagram, section diagram and spectrum diagram), displaying channel data, instrument depth, inclination, and the number of records in real time.The software also allows users to comment. |
PROFILER software working interface |
Technical parameters
PU VElectronic system
Microcontroller: Each probe uses a separate high-performance PIC17C756 CMOS microprocessor, 8 bit, frequency 18.432 MHz, built-in 16 K EEPROM
Data collection: High-precision 16-bit A/D conversion, gain input, full scale 10 V and 1.3withoutV/LSB; supports automatic zeroing and correction of A/D conversion and gain.A series of internal reference voltages are used for correction.32 analog signals, including up to 8 photodetectors, temperature, pressure, inclination sensors, etc.Real-time data can be selected from 17 Hz to 1 h on average.
Preamplifier for photodetectors: Each detector channel provides different gains through independent op amps.The gain of the detector is selected by the computer based on the light intensity signal.Available gain (1000000 V/A, 306V/A and 1010V/A) has 10 levels of choice, with a minimum resolution of 10-15amps.
Data acquisition rate: Maximum rate is 20 Hz and 57600 baud.
Channel acquisition time: Typical scan time including data processing time is 15 ms, at 500withoutyes±Within 175 ns, all probes can start measurements synchronously.
Optional sensor: Biaxial inclination sensor
PU V-2500Optical properties
Optional measurement wavelength: 305, 313, 320, 340, 380 and 395 nm, PAR (400-700 nm) and chlorophyll fluorescence
(Please contact us for special wavelength requirements)
bandwidth: Standard 10 nm FWHM
Filter photodetector: 7 Ed wavelength standard; 1 Lu fluorescence standard
Filter type: Low fluorescence interference filter
Cosine current collector: Teflon-coated quartz, suitable for underwater measurement
Out-of-band suppression: 1 small 10-6
Response value:0°-65°hour:±2%; 65°-85°hour:±10%
Saturation value:105withoutW Silence-2So-1
Noise equivalent irradiance:10-5withoutW Silence-2So-1
parSaturation value:0.4withoutECM-2yes-1
parNoise equivalent irradiance: 4 small 10-10withoutECM-2yes-1
Radiation Detector
Filter photodiode: Single wavelength standard
Detector:13 Mom2Silicon Photodiode
Filter type: Low fluorescence interference filter
Saturation value:103withoutW Silence-2So-1Although-1
Noise equivalent irradiance:10-6withoutW Silence-2So-1Although-1
PU V-2500Physical indicators
diameter:10.2 Smart
length:40.5 Smart
Maximum working depth:350 No
Material:PET plastic shell
weight: 3.2 kg
Ambient temperature range: 0℃～+50℃
P UV deck box
microprocessor: Independent PIC17C756 CMOS microprocessor, used to execute computer programs to each probe, has a data buffer, is used for the data acquisition of the probe, and provides accurate acquisition time for the data of each probe.
Battery-powered: 12 V rechargeable battery, LED indicator provides low power alarm
AC adapter/charger: AC (90-240 V/50-60 Hz)
Output: Single communication port, supporting PUV-2500 and PUV-2510 respectively, or supporting both
cable
Underwater cable, length up to 400 m, need to be purchased separately
PU V-2510Surface radiator (extra order)
Optical and electronic parameters: In addition to the cosine current collector designed to be suitable for air measurement, the same as the PUV-2500
diameter:10.2 Smart
length:35.6 Smart
Material:Aluminum alloy
weight: 3.4kg
Ambient temperature range: -10℃～+50℃