AAR181-S50 Yokogawa RTD Input Module

AAR181-S50 RTD Input Module Yokogawa CENTUM VP AAR181

AAR181-S50 RTD Input Module Yokogawa CENTUM VP AAR181

التوفر: 20 متوفر في المخزون

Yokogawa AAR181-S50 RTD Input Module Configured for multi-point RTD temperature signal conditioning in CENTUM VP control systems, the Yokogawa AAR181-S50...

رمز المنتج: AAR181-S50 RTD

Manufacturer: Yokogawa
Product No.: AAR181-S50 RTD
Product Type: RTD Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1800g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

Yokogawa AAR181-S50 RTD Input Module

Configured for multi-point RTD temperature signal conditioning in CENTUM VP control systems, the Yokogawa AAR181-S50 (AAR181 RTD Input Module) provides direct physical signal processing across 12 isolated field channels.

Hardware Specifications

Parameter	Specification
Model	AAR181-S50 (Base Model: AAR181)
Brand	Yokogawa Electric Corporation
Origin	Japan
Weight	0.2 kg
Dimensions	22 x 124 x 126 mm
Operating Temp	0 deg C to +60 deg C
Power Consumption	450 mA at 5 VDC backplane supply
Input Signal Type	Pt100 RTD (3-wire, JIS C1604:1997, IEC 751:1995)
Input Channels	12 channels (individually isolated)
Measurement Accuracy	+/- 120 mOhm (approx. +/- 0.1 deg C)
Measurement Current	1 mA DC
Isolation Voltage	1500 VAC for 1 minute (channel-to-system)
Permissible Line Resistance	40 Ohm maximum per conductor line

Process Control and Signal Isolation Features

The AAR181-S50 processes low-level resistance variations from Pt100 sensors while isolating field wiring from system backplane electronics. Integrated channel-to-system isolation limits common-mode voltage transfer across long sensor runs in process plant environments. Temperature measurement accuracy relies on balanced 3-wire lead resistance compensation across the INA and INC conductor lines to reject line resistance drift. Each channel features configurable sensor burnout detection (UP/DOWN selection) with a 60-second fault cycle, allowing process automation controllers to maintain predictable trip states during open-circuit element failures.

Frequently Asked Questions

Q: What installation precautions must engineers observe regarding RTD wiring resistance?

A: Technicians must ensure that the wiring resistance of conductor lines INA and INC remains strictly equal and does not exceed 40 Ohm per conductor. Unbalanced lead resistance directly introduces offset errors into the internal bridge measurement calculations.

Q: Can the AAR181-S50 module undergo hot-swapping during active system operation?

A: Engineers can insert or remove the AAR181-S50 module under powered backplane conditions within Yokogawa field control stations, provided the surrounding system slot configuration permits online module replacement without interrupting adjacent I/O bus communications.

Field Installation Guidelines

Mount the AAR181-S50 vertically within a protected IP20 minimum-rated enclosure to ensure proper thermal dissipation across the module chassis. Technicians must land 3-wire Pt100 field connections onto the matching pressure clamp terminal block using shielded twisted-pair cables. Ground the overall cable shield at a single dedicated instrumentation earth bar inside the cabinet rather than floating the shield at both ends. Route low-level RTD wiring through dedicated terminal trunks physically segregated from high-voltage AC power feeds or inductive motor drive cables to suppress electromagnetic interference.

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