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Yokogawa AST143-S00 TC/mV Input Module

في الأوراق المالية!
  • Part Number: AST143-S00
  • Brand: Yokogawa
  • Type: Temperature Input Modules
  • Dimensions: 3.3x10.7x13cm
  • Country of Origin: Japan
  • Barcode: 8537101190

Additional Specifications

Color / Pattern
  • Brown
  • Orange
  • Black
Power Source
  • DC-powered
  • AC-powered
Communication Protocols
  • Ethernet
  • Modbus
  • Profibus
  • Serial
Controller Design
  • Modular
  • Compact
Tags: Temperature Input Modules , Yokogawa CENTUM VP

وصف المنتج

Configured for high-accuracy thermocouple and millivolt signal measurement in Yokogawa DCS systems, the Yokogawa AST143-S00 (AST143 TC/mV Input Module) provides direct physical/electrical execution. It processes up to 16 input channels and transmits conditioned data across the system backplane with minimal propagation delay.

Suffix Breakdown & Model Matrix

The base module designation AST143 defines the 16-channel thermocouple and millivolt input processing hardware architecture. The -S00 suffix specifies the standard hardware option set, incorporating built-in isolation and standard system integration features without custom barrier modifications.

Hardware Specifications

Parameter Specification
Model AST143-S00
Brand Yokogawa
Origin Japan / Singapore
Weight 0.30 kg
Dimensions 120 mm x 100 mm x 39 mm (W x H x D)
Operating Temp -20 to 70 deg C
Power Consumption 150 mA at 5 VDC, 80 mA at 24 VDC
Number of Channels 16
Input Signal Types Thermocouple (TC), Millivolt (mV)
Input Ranges TC: -200 to 1500 deg C; RTD: -200 to 800 deg C; Thermistor: -50 to 150 deg C
Output 4 to 20 mA
Accuracy +/-0.2% of span; TC: +/-40 uV, mV: +/-80 uV at 23 deg C
Communication Protocol HART
Power Supply 24 VDC +/-10%
Input Resistance >= 1 Mohm (Power ON/OFF)
Data Update Period 10 ms
Withstanding Voltage 1500 VAC between circuits and channels

DCS Signal Integrity & Process Control Architecture

  • 4-20 mA HART Loop Protocol Execution: Supports bidirectional HART digital communication layered over standard 4-20 mA output loops for remote device configuration and diagnostics.
  • Channel-to-Channel Electrical Isolation: Features an integrated isolated barrier rated for 1500 VAC withstanding voltage between circuits and individual channels to eliminate common-mode ground loops.
  • Cold Junction Compensation (CJC): Utilizes integrated reference junction compensation with +/-1 deg C accuracy to ensure accurate thermocouple voltage conversion across ambient thermal variations.

Frequently Asked Questions

Q: Can the AST143-S00 module be inserted or removed while the 24 VDC field supply remains active?

A: Yes. The hardware design allows live insertion and removal from the backplane, provided that field wiring circuits adhere to localized hazardous area safety precautions.

Q: What is the input impedance behavior of the module when backplane power is removed?

A: The input resistance remains >= 1 Mohm in both Power ON and Power OFF states, preventing loading effects on active field measurement loops.

Field Installation Guidelines

Mount the AST143-S00 securely into the designated slot on the field control station baseplate, ensuring the locking mechanism fully engages. Route thermocouple extension wires and millivolt signal leads separately from high-voltage AC cables to prevent electromagnetic coupling. Connect signal cable shielding to a single dedicated functional earth point. Verify that the ambient operating temperature inside the cabinet remains within -20 to 70 deg C to maintain measurement drift within the specified limits.

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