7NG0450-0BA01-0AF0-ZC20E00 SIEMENS Exclusive SITRANS TF420 Temperature Transmitter Original Brand New

7NG0450-0BA01-0AF0-ZC20E00 SIEMENS Exclusive SITRANS TF420 Temperature Transmitter Original Brand New

The SIEMENS 7NG0450-0BA01-0AF0-ZC20E00 SITRANS TF420 is a premium temperature transmitter engineered for precision, reliability, and durability in demanding industrial environments. Housed in a rugged dual chamber die-cast aluminum enclosure, this device is designed for wall or pipe mounting and provides long-term stability under harsh operating conditions. It supports two independently configurable inputs, enabling redundant operation and higher input availability. With its galvanically isolated 2-wire output and HART 7 communication interface, the transmitter ensures accurate measurements and seamless integration into process automation systems.

Equipped with a universal input, the SITRANS TF420 allows connection to a wide range of temperature sensors, including RTD Pt100 in compliance with IEC 60751, thermocouples, resistance signals, and millivolt signals. The transmitter offers flexibility and high accuracy, ensuring reliable monitoring and control across multiple industries. Its integrated diagnostic functions, including input drift detection, deliver proactive system maintenance and improved operational safety.

Overview

The SITRANS TF420 transmitter is available in both dual chamber and single chamber enclosures, making it adaptable to different installation requirements. As a 2-wire transmitter with HART communication, it provides universal compatibility, redundancy options, and support for configuration through PC, handheld communicators, or SIMATIC PDM software. An optional local operation function allows users to quickly configure essential parameters directly at the device.

Function and Configuration

Using the HART protocol, parameterization and diagnostics are straightforward, while Profibus PA ensures easy integration into digital networks. The transmitter amplifies and linearizes sensor signals, with galvanic isolation between input and output, and includes an internal cold junction for accurate thermocouple measurements. The output signal is transmitted as a temperature-linear 4 to 20 mA current, with digital transmission available for online diagnostics and monitoring.

The SITRANS TF420 enhances system reliability by automatically detecting sensor failures such as interruptions or short circuits. Its backup functionality allows automatic switchover between inputs without disturbing ongoing measurements. Practical test terminals further simplify direct current loop verification without interrupting operations, making this device both user-friendly and highly dependable.

Product Code: 7NG0450-0BA01-0AF0-ZC20E00

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