Radiometers − UV, IR & Net Solar Irradiance

The CGR3 is a pyrgeometer, designed to provide an economical solution for meteorological measurements of downward atmospheric long wave radiation. The CGR3 uses a thermopile detector and has a sensitivity of 5 to 15µV/Wm² in a spectral range of 4.5 to 42nm. The CGR3 use a flat silicon window with an internal thin film coating to filter out short-wave solar radiation but allows infrared radiation to reach the broadband thermopile detector. A pair of CGR3's can be mounted back to back to form an albedometer to monitoring incoming and outgoing infrared radiation. A screw-in mounting rod and bracket are available for easy installation to a mast or wall. The small size and sealed construction make this instrument the ideal choice for horticulture and agriculture.

The CGR4 is a pyrgeometer, designed for top level solar radiation monitoring networks such as the Baseline Surface Radiation Network (BSRN) of the World Meteorological Organisation for the meteorological measurements of downward atmospheric longwave radiation. The CGR4 uses a thermopile detectors and has a sensitivity of 5 to 15V/W/m in a spectral range of 4.5 to 42m. This pyrgeometer has a specially designed silicon meniscus dome with a hard-carbon coating for a smooth spectral response and provide extra surface protection. An internal thin film coating that absorb a large part of the short-wave radiation. The unique design of the CGR4 reduces the dome heating offset to a negligible level (particularly when ventilated), eliminating the need for dome temperature measurements or dome shading.

The SGR3 is a Smart Pyrgeometer, designed to provide meteorological measurements of downward atmospheric long wave radiation. The SGR pyrgeometers differ from the CGR pyrgeometers by including a Modbus interface and amplified analogue output. The SGR3 uses a thermopile detector that detects radiation in a spectral range of 4.5 to 42nm. The SGR3 use a flat silicon window with an internal thin film coating to filter out short-wave solar radiation but allows infrared radiation to reach the broadband thermopile detector. The SGR3's Modbus interface provide additional and amplified analogue outputs (4-20mA or 0-1V). The amplified and Modbus interface allows units to be easily swapped out without the need for any adjustments to associated monitoring equipment. A pair of SGR3's can be mounted back to back to form an albedometer to monitoring incoming and outgoing infrared radiation. A screw-in mounting rod and bracket are available for easy installation to a mast or wall. The small size and sealed construction make this instrument the ideal choice for meteorological and agriculture, especially were equipment needs regular calibration.

The SGR4 is a Smart Pyrgeometer, designed to provide meteorological measurements of downward atmospheric long wave radiation. The construction of SGR4 pyrgeometers is identical to the CGR4 pyrgeometers but it includes a Modbus interface and amplified analogue output. The SGR4 uses a thermopile detector in a spectral range of 4.5 to 42m. This pyrgeometer has a specially designed silicon meniscus dome with a hard-carbon coating for a smooth spectral response and provide extra surface protection. An internal thin film coating that absorb a large part of the short-wave radiation. The unique design of the SGR4 reduces the dome heating offset to a negligible level (particularly when ventilated), eliminating the need for dome temperature measurements or dome shading. The SGR4's Modbus interface provide additional and amplified analogue outputs (4-20mA or 0-1V). The amplified and Modbus interface allows units to be easily swapped out without the need for any adjustments to associated monitoring equipment. A pair of SGR4's can be mounted back to back to form an albedometer to monitoring incoming and outgoing infrared radiation. A screw-in mounting rod and bracket are available for easy installation to a mast or wall. The small size and sealed construction make this instrument the ideal choice for meteorological and agriculture, especially were equipment needs regular calibration.

The CUV 5 radiometer measures the total UV irradiance of the UVA and UVB components. The CUV 5 uses a photo-diode sensors with optical filters located behind a specially shaped diffuser and glass dome for a very good UV transmission and excellent directional response. Sensitivity of 300 to 500V/W/m for a typical output of 0 to 50mV, spectral range of 280 to 400nm. CUV 5 is optimised for the measurement of total UV outdoors, under natural sunlight, where the irradiance is not likely to exceed 100 W/m. It is not possible to derive the separate components of UVA and UVB from CUV 5 measurements but a suitable UVS series radiometers can be used for this application. The unit is suitable for applications in meteorology, for material testing, monitoring lamps and for use in ageing tests in solar simulators.

The SUV5 is a Smart version of the CUV5 UV Radiometer. The SUV5 requires a 5-30vDC power supply but allows for RS485 interface with Modbus RTU communications and 0-1V or 4-20mA outputs. The SUV5 covers the full UV spectral range of 280 to 400nm and there are specific SUV-A, SUV-B and SUV-E units available for monitoring UV-A, UV-B or UV-E radiation. The unit is ideal for applications in meteorology, for material testing, monitoring lamps and for use in ageing tests in solar simulators where sensors must be calibrated regularly. The configurable outputs allow for units to be swapped out without the need to amend other monitoring equipment. Allowing calibration, or replacements, to be carried out without losing any data.

The SUV series of Smart UV Radiometers provide outputs for specific types of Ultraviolet radiation. The SUV range includes units optimised for a specific band of UV radiation, each unit is adapted for UVA, UVB and the UVE Erythemal (sunburn) action spectrum of the human skin. These units are identical to the SUV5 radiometer with an RS485 Modbus and 0-1V output. The SUV Series replaces the UVS Series for monitoring specific UV-A, UV-B and UV-E bands of the UV spectrum.

The PQS 1 measures the Photosynthetically Active Radiation (PAR) from the Sun, or artificial light sources. The PAR light is absorbed by chlorophyll in plants and crops for photosynthesis. It is a key parameter for agriculture, horticulture and greenhouse automation. The PQS 1 offers a response with an excellent match to the ideal PAR response. The rugged construction allows the sensor to be used under all weather conditions and is well protected from harsh weather conditions and from exposure to pesticides and fertilisers. Spectral range 400 to 700nm. The PQS 1 is ideal for permanent, or portable field testing, for both indoor and outdoor agricultural, horticultural and greenhouse environments.

The NR Lite2 is a single component net radiometer used for monitoring the difference in incoming radiation from the Sun and sky and outgoing radiation from the ground. The NR Lite2 uses a double-sided thermopile detector fitted with black PTFE coated conical absorbers with a single output for the net radiation. The sensor covers a very wide spectral response from the Ultraviolet (UV) to far infrared (FIR). The NR Lite2 has an integral mounting rod for fitting to masts and poles with a 15m signal cable and stick to prevent birds settling on the sensor. The single output and wide spectral range makes this units ideal for monitoring the total net radiation in a wide range of different applications.

The CNR4 net radiometer integrated 4 solar sensors into a single instrument body. The CNR4 consists of a pair of pyranometers and a pair of pyrgeometers. Each pair has one facing upwards for incoming radiation and one facing downwards for the outgoing radiation. The CNR4 has four separate output signals from the sensors, plus integrated temperature outputs. The signal outputs represent the incoming and outgoing short-wave (Solar) and long-wave (atmospheric and terrestrial) radiation, whilst the temperature reading can be used to compensate the pyrgeometer output. Units are supplied with a screw-in mounting rod for fitting to a mast and poles, bubble level and two 8-pin connector ports. An optional heated ventilation unit, the CNF4, is available to minimise offsets, maximise stability and remove precipitation, frost and snow.