Help with Solar Radiation Instruments specifications:
Instrument Performance Specifications
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| Measured Wavelength: | |||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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| Accuracy: | Measurement accuracy, expressed in +/- % of actual value will be measured and recorded. Smaller values therefore represent better accuracy. | ||
| Search Logic: | All matching products will have a value less than or equal to the specified value. | ||
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| Spectral Sensitivity: | |||
| Search Logic: | All matching products will have a value less than or equal to the specified value. | ||
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| Instrument Type: | |||
| Your choices are... | |||
| Pyranometer | Global Solar Radiation (Sun + Sky): Daylight Radiation | ||
| Radiometer | Net Radiation Level (Sum of the incoming direct beam and diffuse solar radiation minus reflected solar radiation.) | ||
| Quantum Sensor | Photosynthetic Light Spectrum; PPFD: Photosynthetic Photon Flux Density (# of photons incident per unit type on a unit surface). | ||
| Other | Other instrument type not listed. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Technology Type: | |||
| Your choices are... | |||
| Thermopile | A thermocouple array connected to provide electrical output proportional to absorbed radiation. Thermocouples may be connected in series for higher voltage output, or in parallel for higher current output. | ||
| Photovoltaic Detector | Photovoltaic cells measure radiation by generating a potential at a junction between two materials. Also known as barrier-layer cells or detectors. | ||
| Other | Any unlisted radiation detection technology. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Dimensions & Mounting
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| Mounting: | |||
| Your choices are... | |||
| Base Mounted | Device is meant to be situated on a flat surface, such as a roof or designed stand. | ||
| Pole-mounted (Typically via clamps) | Device is designed to be secured via clamps to an elevated pole. Typical for weather stations where multiple components are monitored. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Height: | Height (Measured from mounting base to top of device) | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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| Weight: | Weight provides a rough estimate as to the size of the instrument being specified. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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Output & Interface
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| Output: | Listed are the various options for transmission of weather information. | ||
| Your choices are... | |||
| Analog Voltage | Voltage output is in proportion to weather component being sensed. | ||
| Analog Current | Output is a connected transmitter, and current output is proportional to weather component being sensed. | ||
| Pulse Signal | Frequency or modulated frequency output (Ex. sine wave, pulse train, AM, FM). | ||
| Switch or Relay | Output is a Boolean "ON" or "OFF" or toggles an alarm indicator. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Interface: | Listed are various interface options to facilitate the communication of flowrate information. | ||
| Your choices are... | |||
| Serial Interface | (i.e., RS232, RS422) | ||
| Parallel Interface | (i.e., PC parallel printer port, GPIB etc.) | ||
| Other Computer Interface | (i.e., discrete signals, special TTL) | ||
| Phone/Modem Type Interface | Instruments communicate remotely via modem interface. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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User Interface
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| Front Panel: | |||
| Your choices are... | |||
| Analog Front Panel? | Has analog user inputs such as potentiometers, dials, switches etc. | ||
| Digital Front Panel? | Setup or program through the front panel using digital keypad & displays, menus etc. | ||
| Computer Controllable? | Can be controlled remotely with a computer via interface. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Display: | |||
| Your choices are... | |||
| Analog Display? | Has an analog meter or simple visual indicator. | ||
| Digital Display? | Has a digital display for numerical values. | ||
| Video Display (CRT etc.)? | CRT, LCD or other multi-line display. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Features
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| Chart Recorder? | Instrument has chart recording capabilities in order to track weather changes over extended periods of time. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Programmable? | Device can be programmed to operate only during certain times of day or to send signal at certain intervals. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Integral Datalogger / Memory? | Device has internal memory for either presettings or extended time period weather tracking. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Battery Powered? | Device needs no external power source. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Leveling fixture? | Device has built in leveling fixture to ensure optimum performance. Critical in solar radiation, wind and rain instruments. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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Environment
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| Operating Temperature: | The temperature range over which the device must operate. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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