ZNR Net Radiometer

ZNR Net Radiometer adopts excellent design and manufacturing process, with higher precision of continuous measurement, better stability and instrument safety, and wider application range. The traditional net radiometer uses a fragile polyethylene film dome.

The polyethylene film is prone to aging, deterioration, being pecked by birds and other factors, making the measured data less reliable.

The most outstanding change of ZNR net radiometer is that it adopts a special coating of imported materials and a black conical absorber, which can resist the impact of bad weather and truly achieve maintenance free measurement.

Net Radiometer ZNR

The Pyranometer is composed of a double-layer quartz glass cover, a sensing element, a light shield, a watch body, a desiccant, etc. The sensing element is the core of the meter, which is composed of wire wound electroplated thermopile with fast response.

The sensing surface is coated with 3M matt black paint. The sensing surface is a hot junction. When there is sunlight, the temperature rises. It forms a temperature difference electromotive force with the cold junction on the other side, which is proportional to the intensity of solar radiation.

Monitoring Parameters	Net Radiometer
Monitoring Principle	Thermopile
Power-In	No Power in
Interface	-20-20mV / RS485

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Technical Parameter

Item	Parameters
Spectral Range	0.3~100μm
Signal Range	-300 ～+1000W/m2
Output Signal	-20 ～+20mV
Sensitivity	5～14 μ V/(W/m2)
Response Time	≤ 35s (99%)
Internal Resistance	350 Ω
Annual Stability	≤± 2%
Environment Temperature	-40℃~+50℃
Environment Humidity	0%~100% RH
Chassis Diameter	Φ 120mm

Application

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Net Radiometers FAQs

Why double glass cover design？

The double glass cover is used to reduce the influence of air convection on the radiometer. The inner cover is designed to cut off the infrared radiation of the outer cover itself.