SES 2409 Thermocouple Signal Conditioner

The SES 2409 is a dedicated signal conditioner for thermocouple temperature sensors. Designed for DIN rail mounting, it converts low‑level thermocouple voltages into a standardized, isolated 4–20 mA or 0–10 V output, providing accurate temperature measurement in harsh industrial environments.

Technical Specifications

Accuracy is typically ±0.2% of span or better, with excellent long‑term stability. The unit features galvanic isolation of 2.5 kV between input, output, and power supply, protecting the control system from ground‑loop currents and electromagnetic interference. Configuration is performed via DIP switches or optional PC software, allowing adjustment of sensor type, measurement range, and output scaling.

• Input Types: J, K, T, E, N, R, S, B thermocouples

• Output Types: 4–20 mA, 0–10 V DC (configurable)

• Measurement Accuracy: ±0.2% of span (typical)

• Cold Junction Compensation: Integrated with ±0.5°C accuracy

• Response Time: < 200 ms (including filter)

• Isolation: 2.5 kV AC (input/output/power)

• Power Supply: 24 V DC ±10%, 3 W max

• Mounting: DIN rail (EN 60715), width 12.5 mm

Application Domains

The SES 2409 is ideal for temperature monitoring in chemical reactors, ovens, HVAC systems, and plastic extrusion machinery. Its robust design and wide operating temperature range make it suitable for both indoor and outdoor installations.

Configuration and Diagnostics

Configuration is simplified by an intuitive switch‑based interface. A green LED indicates power and proper operation, while a red LED signals a sensor break or internal fault. The unit supports a failure‑safe mode that forces the output to a predetermined value (e.g., 0 mA, 4 mA, or 22 mA) upon sensor failure, enabling safe system behavior.