TBS Pyrheliometer
TBS
The TBS is a pyrheliometer that measures direct solar radiation within a narrow viewing angle of approximately 0.5°, using a wire-wound electroplated thermoelectric stack across a spectral range of 0.3-3 μm. It is supplied in the UK by MetSensor UK.
- ✓ Measures direct-beam solar radiation at ~0.5° viewing angle
- ✓ Spectral range 0.3-3 μm
- ✓ Sensitivity 7-14 μV/(W/m²)
- ✓ Annual stability ±2% max
- ✓ Output as 0-50 mV or RS485
- ✓ Matte black wire-wound thermoelectric sensing stack
Specifications
| Sensitivity | 7-14 μV/(W/m²) |
|---|---|
| Response time | <25 s (99% response) |
| Annual stability | ±2% max |
| Cosine response | ±5% max at 10° solar altitude |
| Azimuth response | ±5% max at 10° solar altitude |
| Non-linearity | ±2% max |
| Spectral range | 0.3-3 μm |
| Temperature coefficient | ±2% max (-10 to +40°C) |
| Power supply | DC 12/24V or solar power |
| Output interface | 0-50 mV or RS485 |
| Sensing technology | Wire-wound electroplated thermoelectric stack, matte black coating |
| The azimuth | not greater than ±5% (solar altitude angle 10°) |
| Non linear | not more than ±2% |
| Monitoring Principle | Thermopile |
| Power-In | DC12/24V / Solar Power |
| Interface | 0-50mV / RS485 |
TBS compared to others
| TBS | Others | |
|---|---|---|
| Automatic recognition of day and night | Yes | — |
| Automatic tracking of the sun | Yes | — |
| Cost Price | Lower | Higher |
Applications
- Meteorological standard stations
- Solar photovoltaic plants
- Agricultural/forestry research
- Building material aging studies
- Atmospheric environment research
- Wind power generation
- Meteorological and electrical environment
Frequently asked questions
What is the difference between a pyrheliometer and a pyranometer?+
A pyrheliometer, such as the TBS, measures only direct-beam solar radiation from a narrow ~0.5° angle pointed at the sun. A pyranometer measures total solar radiation from the whole sky, including diffuse light.
What spectral range does the TBS cover?+
0.3-3 μm.
What output signal does the TBS provide?+
0-50 mV analogue output, or RS485 digital output.
Does the TBS require external power?+
It can be powered by DC 12/24V or solar power.
