ZSHF-2 Soil Heat Flux Sensor
ZSHF-2
The ZSHF-2 is a soil heat flux sensor that measures the flow of heat through soil using a thermopile principle across dissimilar metals, over a range of ±100 W/m², requiring no external power. It is supplied in the UK by MetSensor UK.
- ✓ Measures soil heat flux to ±100 W/m²
- ✓ Thermopile sensing principle across a temperature gradient
- ✓ Self-powered, no power input required
- ✓ Accuracy ±5% of reading
- ✓ Sensitivity 15-60 W/(m²·mV)
- ✓ Output as ±5 mV or RS485
Specifications
| Operating principle | Thermopile (two dissimilar metals measuring temperature gradient) |
|---|---|
| Working temperature | -40 to +55°C |
| Measurement range | ±100 W/m² |
| Signal range | ±5 mV |
| Sensitivity | 15-60 W/(m²·mV) |
| Accuracy | ±5% of reading |
| Output interface | -5 to +5 mV / RS485 |
| Power requirement | No power input |
| Interface | -5-5mV / RS485 |
Applications
- Agricultural research
- Meteorological environment monitoring
Frequently asked questions
What does the ZSHF-2 measure?+
Soil heat flux, the rate at which heat flows through the soil, over a range of ±100 W/m².
How does the sensor generate a signal?+
It uses a thermopile made of two dissimilar metals that generates a voltage proportional to the temperature gradient across it, requiring no external power.
What is the accuracy of the ZSHF-2?+
±5% of reading.
What is the operating temperature range?+
-40°C to +55°C.
