Soil surface temperature sensor (SST)
- Manufacturer: Nesa
- Category: Meteorology – Climatology, SENSORS, Temperature sensors, Floor
The NESA SST is a soil temperature sensor with a Pt100 resistance temperature detector (RTD) sensing element, 1/3 DIN, with a four-wire connection. It is protected by shields against direct sunlight and UV radiation and features natural ventilation at ground level. It is manufactured in accordance with WMO standards and EN 15518-3:2011.
Typical measurement range -40 to +60°C, resolution 0.01°C, and accuracy DIN 43760 1/3 DIN (±0.1°C @ 0°C). Features a 4-wire Pt100 output; 0-2Vdc, 4-20mA, and RS485/Modbus outputs with external MCS interface. Supplied with calibration report and 10 m cable.
Key points
- Typical measurement range -40 ÷ +60°C, resolution 0.01°C, response time <10 s
- Accuracy DIN 43760 1/3 DIN (±0.1°C @ 0°C), ACCREDIA certifiable
- 4-wire Pt100 1/3DIN (100Ω @ 0°C) natural output
- With external MCS interface: 0÷2Vdc, 4÷20mA or RS485 / ModBus
- Power supply 10÷30Vdc (typ. <0.1W, max. 2W@12Vdc mod. TAV)
- Operating conditions -60°C ÷ +80°C, anodized aluminum, 700g
Technical Frequently Asked Questions
What temperature sensor does the SST use?
A Pt100 1/3DIN platinum resistance thermometer (100Ω@0°C) with four-wire connection, according to the response curve of the DIN 43760 standard.
How accurate is it?
DIN 43760 1/3 DIN (±0.1°C @ 0°C), ACCREDIA certifiable, with a resolution of 0.01°C.
What options does it offer?
Natural Pt100 output (N). With external MCS interface, 0÷2Vdc (A), 4÷20mA (B) or RS485 / ModBus (C).
What is the cable length?
The SST is supplied with a 10 m cable. The order code supports cables of 5 m (05), 10 m (10) or of length xx m, specified in meters.
How do I order it?
Sensor (SST), output (N, A, B or C) and cable (05, 10 or xx). Manufacturer example: SST N 05.
Properties
| Feature | Specification |
|---|---|
| Measurement and operating principle | |
| Measured magnitude | Soil temperature |
| Measurement principle | Platinum Pt100 1/3DIN (100Ω@0°C) resistance thermometer, sensitive to temperature variations according to the response curve of DIN 43760 |
| Typical measurement range | -40 to +60°C |
| Resolution | 0.01°C |
| Precision | DIN 43760 1/3 DIN (±0.1°C @ 0°C), ACCREDIA certifiable |
| Response time | <10 s |
| Transducer type | Platinum resistance thermometer 1/3 DIN |
| Ventilation | Natural |
| Regulatory compliance | WMO; EN 15518-3:2011; CE |
| Exit signals | |
| Output signal (N version) | Pt100 1/3DIN (100Ω @ 0°C), 4 wires |
| With external MCS interface (optional) | 0÷2Vdc (A), 4÷20mA (B) or RS485 / ModBus (C) |
| Calibration | By comparison with a certified Accredia standard instrument; delivered with a calibration report |
| Power supply, environment, and mechanical data | |
| Feeding | 10÷30Vdc (typ. <0.1W, max. 2W@12Vdc TAV mod.) |
| Operating conditions | -60°C ÷ +80°C |
| Protections | Protection against polarity reversal and lightning strikes |
| Building material | Anodized aluminum; stainless steel screws |
| Wire | 10m cable |
| Dimensions | View map |
| Weight | 700g |
| Reference | Configuration |
|---|---|
| SSTSST | Output: Pt100 4-wire · Supply: With calibration report and 10 m cable |
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