Product Description

Overview

The Honeywell 05704-A-0144 is a four-channel control card designed for the System 57 gas detection network. It provides centralized monitoring for up to four individual gas sensors, converting analog signals into actionable data for industrial safety systems. This module combines precision signal processing, robust fault detection, and user-friendly calibration in a compact, rack-mountable format.

Key Features

Multi-Channel Gas Monitoring

• Supports four independent sensor inputs, including catalytic bead (flammable) and 4–20 mA (toxic or oxygen) signals

• Reduces system complexity and saves rack space

Advanced Alarm and Fault Logic

• Provides three configurable alarm levels per channel (A1, A2, A3)

• Dedicated fault detection for sensor failure, short circuit, or open circuit

• Electronic adjustment of bridge balance and signal gain

Precision Signal Handling

• Full-scale signal range: 15 mV to 300 mV

• Electronic current adjustment from 90 to 315 mA in 1 mA increments

• Maximum drive voltage: 10 V, maximum line resistance: 40 ohms at 200 mA

• Initial measurement accuracy: ±1%

User-Friendly Interface and Calibration

• Multi-segment backlit LCD for real-time gas readings, channel status, and analog bar display

• One-person calibration supported via front panel or engineering tool

Industrial Reliability

• EMI/RFI shielding for high-noise environments

• Rack-mountable design compatible with all System 57 components

• Maximum power consumption: 12.8 W (200 mA sensor current), typical 8.5 W

Applications

• Industrial gas detection in refineries, chemical plants, and confined spaces

• Multi-zone monitoring for flammable, toxic, or oxygen-deficient environments

• Integration with System 57 racks and safety networks

Technical Specifications

FAQ

Q: Can the 05704-A-0144 card handle both flammable and toxic sensors?
A: Yes, it is compatible with catalytic bead (flammable) and 4–20 mA (toxic or oxygen) sensors.

Q: How is the card calibrated?
A: Calibration can be performed by one technician using the front panel or an engineering tool, reducing downtime.

Q: What is the expected installation lead time?
A: Estimated lead time is 6–8 weeks from order confirmation.

Q: Can this card replace other System 57 modules?
A: Replacement is only recommended if the model and part number (05704-A-0144) match to ensure proper alarm and signal processing.