Temperature probes are key components in any industrial control architecture—from monitoring thermal processes to protecting plants, all the way to the precise control of OEM machines.
CST, an Italian company specialized in the design and manufacture of temperature probes, develops high-performance solutions tailored to the specific application needs of OEMs, system integrators, and machine builders. Technology BSA distributes the full range, supporting customers in selecting the most suitable probe for their application requirements.
Thanks to high-quality materials, extensive customization options, and know-how built over decades of industrial applications, CST probes ensure operational continuity even in environments where temperature, vibration, and thermal cycling are critical factors.

Types of CST temperature probes
Thermocouples (Type K, J, T, etc.)
CST thermocouples are robust, fast-response sensors designed for applications requiring wide temperature ranges.
They operate by generating a voltage (mV) proportional to temperature, making them suitable for furnaces, extruders, burners, and fast processes.
Key features
- Measurement range up to +1800 °C (depending on type).
- High mechanical and thermal resistance.
- Fast response times.
- Cost-effective solution.
RTD temperature sensors (PT100, PT1000)
CST RTDs are based on the change in electrical resistance of a metal (typically platinum) as temperature varies. They are the ideal solution when accuracy, stability, and repeatability are required.
In summary:
- High accuracy (±0.1…0.3 °C).
- Near-perfect linearity.
- Better long-term stability than thermocouples.
- Ideal for chemical processes, HVAC, quality control, and critical environments.
PT100 example (principle):
- 0 °C → 100 Ω
- 100 °C → approximately 138.5 Ω
How to choose the most suitable temperature probe
Correct selection helps prevent measurement errors, premature degradation, and unplanned downtime.
Key criteria to consider include:
1. Application characteristics
- Required temperature range.
- Contact with fluids or specific pressure conditions.
- Process material and presence of corrosive agents.
2. Dimensional characteristics
- Sheath outer diameter.
- Sheath material and immersion length.
- Type of process connection.
3. Accuracy class
- AA, A, B classes (for RTDs).
4. Response time
Essential in dynamic applications.
Application sectors
CST temperature probes distributed by Technology BSA are used in a wide range of industrial contexts:
- Pharmaceutical industry
- Industrial furnaces
- Climatic chambers
- Food industry
- Injection blow molding
- Heat treatment and ceramics
- Wood processing
- Metallurgy
- Laboratories and medical applications
- Glass manufacturing
- OEMs: thermoforming machines, extruders, burners, furnaces
Thanks to modular design and on-demand customization, CST ensures maximum flexibility for every process.
Compatibility with automation systems
CST probes are compatible with the main PLC input modules dedicated to temperature measurement, including Rockwell Automation modules such as 1734-IR2 (RTD) and 1734-IT2 (thermocouples).
When a customer specifies these modules, it is almost certain that the system uses an external temperature probe.


Do you need a custom temperature probe or want to discuss your application with a BSA specialist?
CST temperature probes are a reliable, high-performance solution for all applications where temperature is a critical parameter. Technology BSA supports companies and machine builders in defining the most suitable configuration, providing robust, accurate products fully integrable into modern plants.
Fill out the form and we’ll help you identify the ideal configuration for your system.

