Kippzonen CNR 4 Net Radiometers Instrukcja Użytkownika Pobierz pdf (Strona 18)

2.1.1 Specifications of the CNR 4

General specifications

Environmental

0 - 100% RH (Relative Humidity)

Definition

Intended for continuous outdoor use

Bubble level sensitivity

< 0.5º (bubble half inside ring)

General Construction

Sensor

Thermopile

Receiver paint

Carbon Black

Desiccant

Silica gel (replaceable)

Housing materials

Anodized Aluminum body

Cable Connectors

Binder series 712

Cable (2 cables)

Color Yellow, Poly Urethane, Halogen free, UV blocking

Cable length (2 cables)

10 (standard), 25, 50 (optional)

Weight

0.85 (without cables)

Shock / vibration

IEC 721-3-2-2m2

Operating temperature

°C

-40 to +80

according to EC guideline 89/336/EEC 73/23/EEC

Environmental protection

IP 67

2.2 Properties of the pyranometer

The pyranometer consists of a thermopile sensor and a glass dome both integrated in the CNR 4 body. The

thermopile is coated with a black absorbent coating. The paint absorbs the radiation, and converts it to heat. The

resulting heat flow causes a temperature difference across the thermopile. The thermopile generates a voltage

output. The thermopile and the resistor determine most electrical specifications. The absorber paint and the dome

determine spectral specifications. The thermopile is encapsulated in the housing in such a way that its field of view

is 180 degrees, and that its angular characteristics fulfil the so-called cosine response.

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Kippzonen CNR 4 Net Radiometers Instrukcja Użytkownika Strona 18