Built for dependable temperature measurement in harsh environments, SITRANS TH320/420 converts RTD, TC, resistance and mV signals into a stable 4–20 mA/HART output with advanced diagnostics. TH420 adds dual inputs with 4‑wire connection and hot backup so data keeps flowing if one sensor fails. SITRANS TH420 PA enhanced with Profibus PA delivers high availability and measuring accuracy. Easy commissioning with the SIMATIC CFU and effective preventive maintenance are just a few examples of the rich functionality these transmitters offer:
- Universal input support for RTD, TC, resistance and mV
- Advanced diagnostics for preventive maintenance
- TH420 dual inputs with hot backup for high availability
- Profibus PA option for enhanced integration
- Quick commissioning via SIMATIC CFU
Key benefits
- Boost uptime with built‑in redundancy
- TH420’s dual inputs with 4‑wire connection and hot backup keep measurement continuous even if one sensor fails, preventing data gaps and unplanned stops.
- Accelerate setup and operations
- Configure quickly over HART with SIMATIC PDM or a handheld communicator, then rely on stored parameters for consistent performance across devices.
- Advance safety and compliance
- Choose the SIL 2/3 option for safety‑related applications and benefit from standards‑compliant operation in hazardous areas