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EMS-240

Pyranometer

Thermopile pyranometer measuring global solar radiation from 0.3 to 3 μm, with RS485 or analog output.

ThermopileSolar radiationRS4854-20 mA0-10 V
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EMS-240 Pyranometer
Environmental Monitoring
Family
EMS Series
Category
Environmental Monitoring
Measurement
Global solar radiation, 0 to 2000 W/m²
Spectral range
0.3 to 3 μm

01Overview

Engineered for the field

A thermopile pyranometer that measures global solar radiation across the 0.3 to 3 μm spectrum, from 0 to 2000 W/m² at 1 W/m² resolution. A desiccant cartridge keeps the inside of the glass domes free of condensation, and a built-in bubble level with adjusting screws allows precise levelling without a separate base. Accuracy of ±3% with annual stability within ±3% makes it a dependable reference for solar resource assessment and weather stations. Output is available as RS485, 4 to 20 mA, 0 to 5 V or 0 to 10 V.

02Key Features

What makes the EMS-240 different

01

Full-spectrum thermopile

Thermoelectric sensing covers 0.3 to 3 μm for true global radiation measurement.

02

Condensation control

A desiccant cartridge prevents dew forming inside the domes.

03

Built-in levelling

Bubble level and adjusting screws remove the need for a separate levelling base.

04

Flexible outputs

Choose RS485, 4 to 20 mA, 0 to 5 V or 0 to 10 V to match your logger or PLC.

03Technical Specifications

Detailed specifications

Overview

Measurement
Global solar radiation, 0 to 2000 W/m²
Spectral range
0.3 to 3 μm
Accuracy
±3%
Output
RS485, 4 to 20 mA, 0 to 5 V, 0 to 10 V

Performance

Resolution
1 W/m²
Sensitivity
7 to 14 μV per W/m²
Response time (95%)
≤30 s
Non-linearity
≤±3%
Annual stability
≤±3%
Cosine response error
≤±5%
Directional response error
≤±30 W/m²
Temperature response
≤±3% (-30 to +50 °C)
Tilt response error
≤2%
Zero drift
≤6 W/m²
Internal resistance
200 to 400 Ω

Power and Environment

Power supply
10 to 30 V DC
Power consumption
0.2 W (RS485), 0.7 W (analog)
Operating environment
-40 to +60 °C, 0 to 95 %RH non-condensing

04Applications

Built for these use cases

  • Use case 01

    Solar PV plant performance monitoring

  • Use case 02

    Meteorological stations

  • Use case 03

    Solar resource assessment

  • Use case 04

    Building energy studies

Industries

Deployed across these sectors

UtilitiesEnergyEnvironmental Monitoring

05Resources

Datasheets, manuals and technical documents

Documents are shared on request. Tell us which file you need and our team will send it to you.

  • EMS-240 Datasheet

    Datasheet

    Request

  • EMS-240 User Manual

    User Manual

    Request

06Related products

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