Seven Sensor Class A Thermopile Pyranometer 3S-TP-MB-A

Seven Sensor 3S-TP-MB-A Thermopile Pyranometer is a sensor used to measure solar radiation in units of W/m². It is designed for high-precision solar energy monitoring and meets the ISO 9060:2018 Class A and IEC 61724-1:2021 Class A standards. With advanced thermopile detector and diffuser technology, this pyranometer provides stable and accurate irradiance measurements, making it perfect for solar, meteorological, and agricultural applications. It offers low zero-offset behavior and exceptional stability, ensuring accurate solar irradiance measurements.

Why Choose the 3S-TP-MB-A Thermopile Pyranometer?

High Precision: Meets stringent Class A standards for accurate solar irradiance measurements.
Comprehensive Monitoring: Monitors irradiance, temperature, and humidity for a complete environmental profile.
Fast Response: Ideal for applications requiring rapid detection of solar radiation changes.
Robust Construction: Designed to withstand harsh environmental conditions with an IP68 rating.
Easy Integration: Supports Modbus RTU communication for seamless data integration into existing systems.

How Should I Install and Maintain the 3S-TP-MB-A Thermopile Pyranometer?

Detailed instructions are provided in the user manual, including mounting and wiring diagrams.

Installation:

Unpacking and Inspection: Ensure all components are present and undamaged.
Site Selection: Choose a location with an unobstructed 180° view of the sky, free from shading.
Mounting: Install the pyranometer securely, ensuring it is level and stable.
Electrical Connection: Connect the sensor to the power supply and data logger as per the wiring diagram.
Configuration: Use the 3S-TP-MB Configuration Tool to set communication parameters.

Maintenance:

Daily: Check for any visible damage or obstructions.
Weekly: Clean the sensor dome to remove dust or debris.
Monthly: Verify data output and system integration.
Annually: Perform a full system check and calibration.
Every Few Years: According to IEC 91724-1:2021, once deployed in the field, a SEVEN pyranometer requires recalibration every two years to verify solar radiation data. However, thanks to its high-precision diffusers, our recommendation is to recalibrate every five years.

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Product Details

Specification

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TECHNICAL SPECIFICATIONS OF THERMOPILE PYRANOMETER

Item code	3S-TP-MB-A
Measured Data	Global Horizontal (GHI) or POA Irradiance, Internal and Housing Temperature, Internal Humidity and Pressure, Sensor Tilt Angle
Sensor Type	Thermopile
Spectral range (50% points)	280…3000 nm
Irradiance Range	-20…+4000 W/m²
Nominal Sensitivity	8…14 µV/(W/m²)
Response Time (95%)	<0,5 s (less than 10 s; Class A as per ISO 9060:2018 standard)
Zero Offset A – Thermal Radiation (200W/m²)	± 1 W/m² (± 7 W/m²; Class A as per ISO 9060:2018 standard)
Zero Offset B – Temperature Change (5K/h)	± 1,5 W/m² (± 2 W/m²; Class A as per ISO 9060:2018 standard)
Total Zero Offset C	± 3 W/m² (± 10 W/m²; Class A as per ISO 9060:2018 standard)
Non-stability (change/year)	< 0,5% (± 0,8%; Class A as per ISO 9060:2018 standard)
Non-linearity (100 to 1000 W/m²)	± 0,2% (± 0,5%; Class A as per ISO 9060:2018 standard)
Directional Response (at 1000 W/m², 0 to 80°)	± 10 W/m² (± 10 W/m²; Class A as per ISO 9060:2018 standard)
Spectral Error	± 0,2% (± 0,5%; Class A as per ISO 9060:2018 standard)
Temperature Response (-20°C to 50°C)	± 0,4% (± 1%; Class A as per ISO 9060:2018 standard)
Irradiance Resolution	0,1 W/m²
Internal Humidity	Range: 0%…100% Accuracy: ± 1% RH (20…70%) @ 25°C Resolution: 0,1%
Internal Temperature	Range: -40°C…+85°C Accuracy: ± 0,1°C (5…60°C) @ 20…80% RH Resolution: 0,1°C
Housing Temperature	Range: -40°C…+85°C Accuracy: ± 0,2°C Resolution: 0,1°C
Sensor Tilt Angle	Range: 0°…180° Accuracy: ± 0,5° Resolution: 0,1°
Internal Pressure	Range: 260…1260 hPa Accuracy: 0,5 hPa Resolution: 0,1 hPa
Spirit Level Accuracy	<0,1°
Viewing Angle	2π sr
Data Output	RS485 up to 38400 Baud
Communication Protocol	Modbus RTU (Optional Modbus TCP/IP)
Output Rate	1/s
Operating Temperature Range	-40…+85°C
Power Supply	12…30 V DC
Power Consumption	45 mA @ 24 V DC
Cable Features	3x2x0,14 mm², 26 AWG LI2Y(st)CTP PUR Cable, UV and weather resistant
Cable Length	3 meter standard length (Custom lengths available)
Galvanic Isolation	1000 V between power supply and RS485 Bus
IP Rating	IP 68
Dimensions	Ø140 × 120 mm
Sensor Housing Material	Anodized Aluminum
Shade Disk Material	ASA
Weight	0,68 kg
Standards	ISO 9060:2018, Fast Response Spectrally Flat Class A (Secondary Standard), IEC 61724-1:2021 Class A, ISO/TR 9901:1990, ISO 9847
Origin	TÜRKİYE

How Does the 3S-TP-MB-A Thermopile Pyranometer Work?

The 3S-TP-MB-A Thermopile Pyranometer measures solar irradiance by detecting the temperature difference between its thermopile sensor and the surrounding environment. When sunlight strikes the sensor, it heats the absorbing surface of the thermopile, creating a temperature differential between the hot and cold junctions. This temperature difference generates a measurable voltage that is directly proportional to the intensity of the solar radiation. The pyranometer is designed with a glass dome that allows sunlight to enter from all directions, ensuring it captures both direct and diffuse radiation. With a spectral range of 280 nm to 3000 nm, the pyranometer provides accurate readings of global solar radiation, delivering precise irradiance measurements in watts per square meter (W/m²). The device’s design ensures a rapid response time, making it ideal for dynamic solar applications.