- High Stability
- Usage Areas: Meteorology and Agricultural Measurements
- Easy Installation
- Digital Output Signal
- Compatible with Data Logging Units
- High Accuracy in Soil Temperature Measurements
- Low Energy Consumption
- Measures soil temperature at 5 different depths (-5 cm, -10 cm, -20 cm, -50 cm, and -100 cm) and air temperature above the soil (+5 cm).
- The sensor's measurement points are made of materials with high thermal conductivity; resistant to water, salt, and other corrosive elements.
Technical Specifications
Measurement Range | -40 - +60 °C |
Accuracy | ±0.3 °C |
Resolution | 0.1 °C |
Operating Temperature | -40°C - +60°C |
Protection Class | IP67 |
Operating Voltage | 12V DC |
Operating Current | 50 mA @12V DC, 25°C |
Output Signal | SDI12 and RS485 Half Duplex |
Maximum Supply Voltage | 15 V DC |
Weight | 250 g |
TECH-SEN ST101 Models and Features
Model Number 470412
Output Signal | Digital |
Communication Protocol | SDI12 and RS485 Half Duplex |
SDI12 Version | 1.4 |
Default SDI12 and RS485 Address | 8 |
RS485 Communication Speed | 9600-57600 |
Default Communication Speed | 9600 |
Multiple data points can be printed from the SDI12 and ModBUS outputs of the Tech-SEN ST101 soil temperature sensor. Optional additions can be customized according to requests.
Calibration functions obtained as a result of calibration can be entered into the data transmission unit of the Tech-SEN ST101 soil temperature sensor via SDI12 or ModBUS commands.
Data such as sensor serial number, model number, manufacturer information can be printed from the SDI12 or RS485 outputs.
Tech-SEN ST101 470412 Model Cable Diagram
Cable Color | Description | Data Logger Terminal Connection |
Blue | Supply Ground | Ground Connection |
Brown | Supply (+12V DC) | 12V DC Output |
Green | RS485 A | Digital Input |
Yellow | RS485 B | Digital Input |
Gray | SDI12 Output | SDI12 Input |