7NG0440-0BA01-0CF0-ZE27 SIEMENS Exclusive SITRANS TF420 Temperature Transmitter Original Brand New

7NG0440-0BA01-0CF0-ZE27 SIEMENS Exclusive SITRANS TF420 Temperature Transmitter Original Brand New

The SIEMENS 7NG0440-0BA01-0CF0-ZE27 SITRANS TF420 is a premium-quality temperature transmitter engineered for high accuracy, safety, and long-term reliability in demanding industrial environments. This device is designed with a robust die-cast aluminum enclosure and offers both flameproof (Ex d) and explosion-proof (XP) protection, making it suitable for applications in hazardous areas where safety and performance cannot be compromised. Its single chamber housing supports wall or pipe mounting, providing installation flexibility to suit different site conditions.

Equipped with two independently configurable inputs, the SITRANS TF420 allows redundant sensor operation to ensure continuous measurement availability. It features a galvanically isolated 2-wire output with HART communication (4 to 20 mA), ensuring seamless integration into process automation systems. The device supports a wide variety of sensor types, including resistance thermometers (RTD Pt100 IEC 60751), thermocouples, Ω, and mV signals, offering broad compatibility for diverse process requirements.

Overview

The SITRANS TF420 provides a universal solution for industrial temperature monitoring. With dual input circuits, drift detection, and automatic backup switching, it guarantees uninterrupted operation even under challenging conditions. This reliability makes it an essential choice for industries requiring precise process control and safety compliance.

Function

Communication is enabled through HART protocol V7, supporting parameterization via SIMATIC PDM, PC tools, or handheld communicators. Optional local operation allows quick configuration of essential parameters directly on the device, reducing commissioning time. Its internal cold junction for thermocouple applications and practical test terminals for current loop measurement further enhance usability.

Principle of Operation

The transmitter amplifies and linearizes two independent sensor signals, ensuring highly accurate, temperature-linear outputs from 4 to 20 mA. It also supports digital transmission for diagnostics and configuration, ensuring operators have real-time insights into process conditions. Automatic fault detection and seamless backup switching provide robust protection against sensor failures, keeping processes stable and efficient.

Product Code: 7NG0440-0BA01-0CF0-ZE27

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