The ST-2 Surface Temperature Sensor provides accurate and reliable contact-based temperature measurements for various surfaces, including soil, asphalt, water, and industrial equipment. Designed for harsh environments, it features a rugged stainless steel probe, IP68-rated housing, and a wide operating range (-40°C to +150°C). With ±0.3°C accuracy and multiple output options (4-20mA, 0-5V, or Modbus RTU), it integrates seamlessly with data loggers and SCADA systems. Ideal for road weather monitoring, solar panel efficiency studies, and industrial process control.The ST-2 Surface Temperature Sensor provides accurate and reliable contact-based temperature measurements for various surfaces, including soil, asphalt, water, and industrial equipment. Designed for harsh environments, it features a rugged stainless steel probe, IP68-rated housing, and a wide operating range (-40°C to +150°C). With ±0.3°C accuracy and multiple output options (4-20mA, 0-5V, or Modbus RTU), it integrates seamlessly with data loggers and SCADA systems. Ideal for road weather monitoring, solar panel efficiency studies, and industrial process control.
Accurate Surface Temperature Measurement
The ST-2 sensor delivers precise contact temperature readings for diverse materials, from concrete and asphalt to water and metal surfaces. Its high-thermal-conductivity probe ensures minimal measurement lag, providing real-time data for critical applications.
Rugged and Weatherproof Design
Built with marine-grade stainless steel and an IP68-rated enclosure, the ST-2 withstands extreme conditions, including heavy rain, UV exposure, and corrosive environments. The probe’s reinforced cable entry prevents moisture ingress, ensuring long-term reliability.
Versatile Integration
Compatible with most data acquisition systems, the ST-2 supports analog (4-20mA, 0-5V) and digital (Modbus RTU) outputs. Its low-power design (3.5mA @ 12V) makes it suitable for solar-powered remote monitoring stations.
Key Features
- ±0.3°C high accuracy at 25°C
- Stainless steel probe with excellent thermal conductivity
- IP68 protection (submersible up to 2m)
- Wide temperature range: -40°C to +150°C
- Multiple output options (4-20mA, 0-5V, Modbus RTU)
- Low power consumption (3.5mA typical)
Installation & Maintenance
- Ensure full contact between the probe and the measured surface
- Use thermal paste for better conductivity on smooth surfaces
- Avoid direct sunlight exposure on the probe for unbiased readings
- Annual calibration recommended for critical applications
| Parameter | Specification |
|---|---|
| Measurement Range | -40°C to +150°C |
| Accuracy | ±0.3°C (@25°C) |
| Resolution | 0.1°C |
| Response Time (τ90%) | ≤ 30 sec (in still air) |
| Probe Material | Stainless steel AISI 316 |
| Protection Rating | IP68 (submersible) |
| Output Options | 4-20mA, 0-5V, Modbus RTU |
| Power Supply | 5-30V DC |
| Cable Length | Standard 5m (extendable to 100m) |
| Calibration | NIST-traceable (optional) |
| Brand | LSI-Lastem |
