Honeywell 51309218‑175

Product Name

Low‑Level Analog Input Multiplexer RTD FTA Board

Product Description

Field termination assembly multiplexing board for Honeywell DCS system, specially used for multi‑channel RTD resistance temperature detector signal acquisition, multiplexes multiple low‑level temperature measuring signals and transmits them to the control system main board, reduces field wiring complexity.

Category:
Description

Technical Specifications

  • Model: 51309218‑175
  • Signal Type: RTD resistance temperature detector low‑level analog signal
  • Channel Quantity: 16 input channels
  • Power Supply: 24 VDC
  • Input Signal Range: ‑40 mV ~ +210 mV
  • Operating Temperature: ‑40 ℃ ~ +85 ℃
  • Weight: 0.85 kg

Functional Features

  • Multi‑channel RTD signal multiplexing integration
  • Low‑noise analog signal conditioning circuit
  • Reduce field wiring quantity through signal concentration
  • Rack‑mount hot‑swap supporting
  • Signal channel over‑voltage protection

Application Scenarios

Power plant boiler temperature measurement, chemical reaction kettle multi‑point temperature monitoring, oil‑gas process temperature collection, industrial furnace multi‑point temperature monitoring occasions with large quantity of temperature measuring points.

Performance Parameters

Full‑scale accuracy ±0.1%; response time less than 2 seconds; channel‑to‑channel signal isolation; strong low‑level signal anti‑interference capability.

Material Composition

Industrial coated printed circuit board; metal panel lock‑type structure; gold‑plated backplane connector; field wiring terminal row.

Structural Characteristics

Standard card‑type plug‑in board; front‑panel locking handle; rear‑end backplane golden finger connector; front‑side field signal wiring terminal block.

Working Principle

Multiple RTD temperature‑sensor low‑level resistance signals access the FTA board, complete signal filtering and conditioning inside the board, time‑division multiplexing transmits multiple‑path signals to the system processing board through backplane bus.

Installation Requirements

Insert into the specified slot of Honeywell DCS rack; lock front‑panel handle; strictly distinguish positive and negative polarity for field RTD wiring; avoid signal cable laying alongside high‑power power cable.

Usage Notes

Prevent field‑side over‑voltage from entering the signal channel; do not plug and unplug with field signal live‑wiring; check terminal block for loose wiring regularly; keep cabinet away from strong electromagnetic interference sources.

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