Safety temperature limiter STL50

Certified Safety Temperature Limiter for Thermal Process Protection

The STL50 Safety Temperature Limiter is a programmable safety controller designed to monitor thermal processes and immediately switch systems to a safe operating state when temperature limits are exceeded or a fault occurs. Certified to DIN EN 14597, EN 61508 (SIL2), and EN ISO 13849 (PL d), it delivers dependable protection for industrial heating and process applications.

Key Features:

  • 🌡️ Certified Safety Monitoring

    Approved to DIN EN 14597, SIL2, and PL d standards for reliable over-temperature protection in safety-critical applications.

  • ⚙️ Flexible Sensor Compatibility

    Supports Pt100 (3-wire) and Type J, K, N & S thermocouples with programmable temperature limits and switching hysteresis.

Key Features:

  • 🚨 Fast Alarm & Safety Shutdown

    Instantly detects over-temperature, sensor failures, short circuits, and power faults while activating safety relay, pre-alarm relay, and external alarm output.

  • 📟 Easy Configuration & LCD Display

    Features a graphic LCD with plain-text messages, front-panel programming, password protection, and error memory for simple operation.

Applications:

  • 🔥 Industrial Heating Systems

    Protects boilers, furnaces, ovens, and heat-generating equipment from overheating.

  • 🌡️ Thermal Process Monitoring

    Ensures safe temperature monitoring in manufacturing and industrial processing.

  • ⚙️ Machine & Equipment Protection

    Safeguards machinery by automatically shutting down during unsafe temperature conditions.

  • 🤖 Industrial Automation

    Integrates with PLCs and control systems for reliable temperature safety monitoring.

Why Choose This Solution?

The STL50 Safety Temperature Limiter combines certified safety, fast fault detection, programmable protection, and reliable temperature monitoring in one compact DIN rail device, making it ideal for industrial thermal safety applications.

Certified Safety

DIN EN 14597, SIL2, and PL d approved.

Universal Temperature Inputs

Supports Pt100 and thermocouple sensors.

Intelligent Alarm Protection

Fast shutdown with alarm and safety relay outputs.

Simple Configuration

Graphic LCD with plain-text diagnostics and keypad programming.

Related Products

GTF103-Ex explosion-proof industrial Pt100 temperature probe with connection head and threaded stainless steel sensor.
Industrial temperature probe GTF103-Ex
Temperature monitor TF1 with compact threaded brass sensor, right-angle electrical connector, and integrated temperature sensing element for reliable industrial temperature monitoring and process control.
Temperature monitor TF1
Air Probe 7132 industrial stainless steel air temperature sensor with a perforated probe tip, long cylindrical housing, and braided high-temperature cable, isolated on a white background.
Air probe 7132
TC125 temperature measuring transducer with DIN rail design, configurable temperature input, analog output, and LED status indicator.
Temperature Measuring Transducer TC125