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UV-Biometer Model 501 and 501A
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| The UV-Biometer model 501 and 501A(analog version) are meteorological grade instruments
that measure biologically effective ultraviolet radiation(UV-B) outdoors and underwater (5m max depth)
Find out how to submit your ultraviolet data to the World
Ozone and Ultraviolet Radiation Data Centre
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APPLICATIONS
•Measurement of biologically effective ultraviolet radiation from sunlight and from
artificial sources with wavelengths above 280 nm
•Plant, marine, climatological ozone
or other biological impact studies that require continuous field measurements over long
periods of time
•Correction of spectroradiometric measurement
errors cause by the variations of irradiance during the scan
•Sunburning time
measurements for media and research organizations that provide public information about
the effects of UV radiation
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CONFIGURATION
The model 501 is a complete plug-and-play system including the detector for outdoor use,
computerized controller/data logger, and connecting cables. It is easy to install and use. |
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| The model 501A is a standalone detector that can be connected to any
data logger. It is recommended for sites with existing data collection equipment or requiring
data loggers designed for outdoor use. A detector cable is provided. |
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FEATURES
Model 501
Output: digital (UV signal and sensor temperature)
Data acquisition:
dedicated computerized data logger with liquid crystal display, keypad, serial
communication port and parallel printer port; accommodates 2 detectors simultaneously;
optional analog output
Dose period: selectable from 1 minute to 1 hour
Internal memory:
stores up to six months of 1 hour dose integrals and sensor temperature from two detectors
in a nonvolatile memory
Data integrity:
nonvolatile memory; internal rechargeable power backup for the recording circuitry;
automatic temperature compensation corrects data if ambient temperature exceeds
specifications or AC power is lost
Communication:
compatible with any computer and modem equipped with an RS232 serial port; menu organized
remote setup and data retrieval; user selectable baud rate from 300 to 9600 bps
Power source: universal 90-250 VAC, 50-60 Hz or 12 VDC
Model 501A
Output: analog (UV signal and sensor temperature); compatible with
most data loggers
Power source: 11 to 15 VDC/1A max. (5mA without temperature
stabilization) |
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SPECIFICATIONS
Detectors of Model 501 and 501A
| Spectral range |
280-320 nm, close to Erythema Action Spectrum |
| Measurement range |
0 to 10 MED/Hr (Minimal Erythemal Dose per Hour) |
| Angular response |
within 5% from ideal cosine for incident angles |
| Response time |
1 second (0.1 second on demand) |
| Temperature correction |
1% per °C |
| RAF |
>1 (Radiation Amplification Factor calculated for 30 deg solar
zenith angle and 0.27 cm ozone column) |
| Operating temperature |
-40 to +50 degC ambient |
| Operating environment |
outdoors or underwater (max. depth 15 feet or 5
meters) |
Recorder of Model 501 only
| Temperature range |
0 to +50C |
| Operating environment |
indoors, no water condensation |
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Physical Characteristics
Detectors of Model 501 and 501A
| Weight |
2 lbs (0.9 kg) without cable |
| Dimensions |
5.5" H x 5.9" Diam. (14 x 15 cm) |
| Cable |
with hermetic connector at detector end; 50 ft standard length, up to 200 ft. can be
ordered; approx. weight 0.1 lbs per ft |
| Mounting |
3 leveling legs locked in a quick release base; circular
level mounted on the detector |
Recorder of Model 501
| Weight |
4 lbs (1.8 kg) |
| Dimensions |
6.3" W x 3.1" H x 9.5" D (16x8x24 cm) |
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