ES-S228T-B Total solar radiation sensor (Class B)

The ES-S228T-B total radiation sensor is a shortwave total radiation sensor used for solar radiation observation. It is a Class-I total radiation sensor conforming to the latest ISO 9060 and WMO technical standards.

The ES-S228T-B total radiation sensor is a shortwave total radiation sensor used for solar radiation observation. It is a Class-I total radiation sensor conforming to the latest ISO 9060 and WMO technical standards.

The ES-S228T-B total radiation sensor measures solar radiation received by a horizontal plane from a solid angle of 2π steradian degrees (hemispherical direction), measured in W/m². The ES-S228T-B operates in a completely passive mode, utilizing a thermopile sensor to generate an output voltage proportional to the incident radiation flux. The use of two spherical glass domes reduces measurement errors, particularly thermal offset, resulting in high measurement accuracy.

Classified according to ISO 9060/WMO standards

Grade B/Good Quality

Response time (95% response)

<10s

Zero-point offset:(a) Corresponding to 200 W/m² net thermal radiation (ventilation)

<15 W/m²

Zero-point offset:(b) Response to Ambient Temperature Variation of 5 K/h

<4W/m²

Stability (Variation/Year, Percentage of Full Scale)

±1.5%

Niet-lineariteit

±1%(100~1000 W/m²)

Directional Response

±20 W/m²

Temperature Response

<4%(-10~40℃)

Tilt Response

<2%

Sensitivity Range

7-14μV/(W/m²)

Bedrijfstemperatuur

-40~+80℃

Internal Resistance

<50Ω

Standard Cable Length

3m

Measurement Range

0~2000W/m²

Cable Replacement

Users can remove and install cables

Spectral Range

280~3000 nm (50% transmittance)

Reading Requirements

One differential voltage channel or one single-ended voltage channel

Horizontal Calibration

Includes bubble level and adjusting feet

Solar Exposure Uncertainty

±2%

Weight (excluding cable)

0.8kg

Calibration Traceability

WRR traceability, procedure according to ISO9847

Recommended Calibration Cycle

Biennially

Uitgangssignaal

Original output 0~20mV,Optional RS485/4~20mA output (not for external transmitter)

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