Description

Yokogawa ASR133-S00 RTD/POT Input Module

The Yokogawa ASR133-S00, also cataloged as the ASR133 RTD/POT Input Module, operates as a dedicated hardware component for capturing RTD and potentiometer signals within CENTUM VP and CENTUM CS 3000 systems. It provides fully isolated channel input and configurable wiring schemes for precise electrical measurement acquisition.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa ASR133-S00
Origin	Japan
Weight	Approx. 0.30 kg
Dimensions	Standard FIO module form factor
OperatingTemp	0 to 55 degC (ambient)
PowerConsumption	150 mA (5 VDC), 450 mA (24 VDC)
InputSignal	4-20 mA, RTD (2-/3-/4-wire), POT (3-wire, 0-10 kΩ)
AllowableInputCurrent	22.5 mA
InputResistance (Power ON)	2-wire: 400 Ω (I=20 mA) to 750 Ω (I=4 mA)4-wire: 485 Ω (I=20 mA) to 925 Ω (I=4 mA)
InputResistance (Power OFF)	≥ 1 MΩ
WithstandingVoltage	1500 VAC
Accuracy	±16 μA
StepResponseTime	100 ms
DataUpdatePeriod	10 ms
TransmitterPowerSupply	16 VDC or higher, output current limit 20 mA
MaximumNormalModeInputVoltage	25 V (applied to terminals by 4-wire transmitter)
DriftDueToAmbientTempChange	±16 μA/10 degC
ExternalConnection	Pressure clamp terminal (ATSA3)
HARTCommunication	Supported
BarrierType	Isolated interface

Process Control Features

The module supports channel-to-channel isolation for all 8 input channels, preventing cross-talk and electrical interference in mixed-signal field environments. It provides 4-20 mA HART loop compatibility, allowing simultaneous analog measurement and digital communication. Cold junction compensation (CJC) is included for RTD inputs, ensuring temperature measurement stability under ambient variation.

Frequently Asked Questions

Q: VnA: Can the ASR133-S00 module be hot-swapped during operation?
A: No. The module must be powered down prior to insertion or removal to maintain system integrity and avoid signal errors.

Q: VnA: What is the maximum wiring resistance allowed per RTD channel?
A: Each channel supports up to 50 Ω, including wiring resistance. Exceeding this may affect measurement accuracy.

Q: VnA: Is firmware update required for HART communication support?
A: HART communication is hardware-native. Firmware updates are not required for basic operation but may be needed for future protocol enhancements.

Field Installation Guidelines

• Mount the module on compatible Yokogawa FIO racks using ATSA3 pressure clamp terminals.
• Ensure field signal shields are grounded at a single point to avoid ground loops.
• Maintain separation between RTD/POT signal wiring and high-voltage lines to reduce noise interference.
• Verify that the ambient temperature does not exceed the 0-55 degC range during installation.
• Check that the field wiring resistance per channel does not exceed 50 Ω, and confirm 2-/3-/4-wire configuration matches the module setup.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems