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KIPP ZONEN CGR3 longwave radiation meter
NegotiableUpdate on 04/25
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Overview
KIPP ZONEN CGR3 longwave radiation meter: The radiation from the sun is mainly in the "shortwave" range of 300-4000nm (4um), including the ultraviolet, visible, and near-infrared parts of the spectrum. A portion of this radiation is absorbed by clouds, aerosols, and molecules in the atmosphere, which preheat and radiate longwave radiation. This is the far-infrared thermal energy (FIR) with wavelengths ranging from 4.5um to over 40um.
Product Details
KIPP ZONEN CGR3 longwave radiation meterWorking Principle:
The radiation from the sun is mainly in the 'short wave' range of 300-4000nm (4um), which includes the ultraviolet, visible, and near-infrared parts of the spectrum. Part of this radiation is absorbed by clouds, aerosols, and molecules in the atmosphere, which preheat and emit longwave radiation. This is the far infrared thermal energy (FIR) with wavelengths ranging from 4.5um to over 40um.
When both shortwave and longwave radiation reach Earth at the same time, a portion of it is reflected, while the remaining portion heats the ground, and then the Earth radiates longwave thermal energy back into the sky. Shortwave radiation is measured through a solar radiation meter and a longwave radiation meter.
A wavelength radiometer provides a voltage proportional to the exchange of radiation between an instrument and the sky (or ground). The detector signal output can be positive or negative. In order to calculate the input or output FIR, it is necessary to know the temperature of the longwave radiation meter housing, and the data must be recorded simultaneously with the detector signal.
-KIPP ZONEN CGR3 longwave radiation meterInstrument features:
CGR3 is a partner of CMP3 and CMP6 solar radiometers. The silicon glass window transmits infrared radiation, and the internal thin film coating blocks short wave solar radiation from reaching the thermopile detector, with a field of view of 150 degrees. The compact and sealed structure makes this instrument an ideal choice for horticulture and agriculture. Installation screws can be used to install the rod, making it easy to install.
| Technical Specifications | |
|---|---|
| Specifications | |
| Spectral Range (Overall) | 4.4 to 50 μm |
| Spectral range (50% points) | 5 to 15 μV/W/m² |
| sensitivity | 4.5 to 42 μm |
| impedance | 20 to 200Ω |
| Expected output range (-200~200W/m2) | -3 to 3mV |
| Effective wavelength range (net) | -250 to 250 W/m² |
| Response time (63%) | < 6 s |
| Response time (95%) | < 18 s |
| zero drift (b) Temperature variation (5 K/h) |
< 5 W/m² |
| Silicon window thermal drift (with 1000 W/m ² direct radiation) |
< 15 W/m2 |
| Instability (change/year) | < 1% |
| Nonlinear (-250 to 250 W/m ²) | < 1% |
| Spectral selectivity (8 to 14 μ m) | < 5% |
| temperature response | < 5% (-10 °C to +40 °C) |
| Directional response (0 ° to 90 ° at ± 250 W/m ²) | < 3% |
| vision | 150° |
| Bubble accuracy | < 0.2° |
| Temperature sensor output | 10 K Thermistor (optional Pt-100) |
| Sensor type | Thermoelectric stack |
| Working temperature range | -40°C to +80°C |
| Storage temperature range | -40°C to +80°C |
| humidity range | 0 to 100% non condensing |
| (IP) Protection level | 67 |
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