Yokogawa AAR145-S50 S1 TC/RTD Input Module

Product Description

The Yokogawa AAR145-S50 S1, also cataloged as the AAR145-S50 TC/RTD Input Module, operates as a dedicated hardware component for temperature and resistance signal acquisition within Yokogawa CENTUM control system I/O platforms.

Hardware Specifications

Channel Isolation and Temperature Signal Processing

The Yokogawa AAR145-S50 S1 provides 16 isolated input channels for temperature and resistance measurement applications. Each channel accepts thermocouple, RTD, and potentiometer signals through dedicated input circuits.

Furthermore, the module supports RTD measurement using a 1 mA excitation current and accommodates JIS C1604:1997, IEC751, and 1995 Pt100 3-wire sensor standards. The isolated channel structure reduces interference between individual measurement loops and improves signal separation inside the I/O system.

For Yokogawa process control applications, the module design supports field instrument signal conditioning functions, including channel-to-channel isolation and cold junction compensation (CJC) requirements for thermocouple measurement configurations.

Frequently Asked Questions

Q: How many input channels does the AAR145-S50 S1 provide?
A: The module provides 16 isolated input channels for TC, RTD, and resistance measurement signals.

Q: What RTD sensors are compatible with the AAR145-S50 S1?
A: The module supports JIS C1604:1997, IEC751, and 1995 Pt100 3-wire type RTD sensors.

Q: What power supply requirement applies to this input module?
A: The module requires a 5 V DC supply and has a maximum current consumption of 350 mA.

Field Installation Guidelines

• Install the AAR145-S50 S1 inside the designated Yokogawa I/O rack following the system hardware configuration manual.
• Verify the module slot assignment before inserting the unit into the backplane.
• Use shielded signal cables for RTD and thermocouple field wiring to reduce electromagnetic interference.
• Connect cable shields according to the plant grounding practice and avoid multiple grounding points on signal shields.
• Separate temperature input wiring from high-voltage power cables and switching circuits.
• Confirm RTD wiring configuration before commissioning, especially for 3-wire Pt100 connections.
• Check field cable resistance because the combined signal source and wiring resistance must remain within the specified limit.
• Verify input channel allocation and sensor scaling parameters during system configuration.

Other Attributes

• Country of Origin: Japan/Singapore
• Lead Time: In Stock, 2 Working Days

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