Honeywell System 57 Gas Detection Control System: Comprehensive Overview

Honeywell System 57 Gas Detection Control System: Comprehensive Overview

The Honeywell System 57 is a highly versatile, reliable, and intelligent gas detection control platform designed to safeguard personnel, facilities, and processes from the hazards of toxic, combustible, and oxygen deficiency/enrichment gases. Engineered with Honeywell’s decades of expertise in gas sensing and control technology, the System 57 provides centralized monitoring, alarming, and data logging capabilities, making it an ideal choice for a wide range of industrial and commercial applications where gas safety is paramount.

Key System Features & Advantages:

• Modular and Scalable Architecture: Easily expandable to accommodate varying numbers of gas detectors and input/output requirements.

• Advanced Sensor Compatibility: Supports a wide array of Honeywell gas sensors, including electrochemical, catalytic bead, infrared (IR), and photoionization detectors (PIDs).

• Intuitive User Interface: Features clear, graphical displays with menu-driven navigation for easy configuration, operation, and status monitoring.

• Comprehensive Alarm Management: Multiple programmable alarm levels (low, high, fault) with configurable relay outputs for audible/visual alarms, ventilation control, or process shutdown.

• Robust Data Logging and Communication: Capable of storing historical event and concentration data, with options for serial (RS-485 Modbus) or Ethernet communication for integration with building management systems (BMS) or distributed control systems (DCS).

• High Reliability and Diagnostics: Built-in self-diagnostics and sensor health monitoring to ensure system integrity and minimize downtime.

• Global Compliance: Designed to meet various international safety standards and certifications.

Representative Product Models and Parameters

The System 57 family comprises several controller models and a vast range of compatible gas detectors. Below are some key examples:

1. Control Units:

• Model 57C-I-4/8/16 (Standard Control Unit)

• Input Channels: 4, 8, or 16 (configurable for 4-20mA or digital RS-485 Modbus sensors)

• Display: 128 x 64 graphical LCD with backlight

• Relay Outputs: 8 programmable Form C relays (common for alarm levels 1 & 2, fault, and system fault; expansion options available)

• Communication: RS-485 Modbus RTU (standard), optional Ethernet Modbus TCP

• Power Supply: 85-265 VAC, 50/60 Hz or 24 VDC

• Operating Temperature: -20°C to +50°C (-4°F to +122°F)

• Enclosure Rating: NEMA 4X / IP66 (wall-mount)

• Certifications: CE, ATEX, IECEx, UL/CSA (varies by configuration)

• Description: The core controller, available in 4, 8, or 16 channel configurations to interface with multiple gas detectors.

• Key Parameters:

• Model 57C-R-4/8/16 (Remote Display Unit)

• Display: Same as 57C-I, mirroring primary controller data.

• Communication: RS-485 Modbus RTU to primary controller.

• User Inputs: Alarm Acknowledge, Silence (configurable).

• Enclosure Rating: NEMA 4X / IP66 (wall-mount)

• Description: A secondary display unit that can be networked to a primary 57C controller to provide remote status indication and alarm acknowledgement.

• Key Parameters:

2. Gas Detectors (Transmitters) Compatible with System 57:

• Honeywell Searchpoint Optima Plus (Infrared Combustible Gas Detector)

• Detection Principle: Non-Dispersive Infrared (NDIR)

• Gases Detected: Methane (CH4), Propane (C3H8), Ethylene (C2H4), and others (calibration specific)

• Measuring Range: 0-100% LEL (Lower Explosive Limit)

• Output: 4-20mA linear, HART (optional), RS-485 Modbus (optional)

• Response Time: < 5 seconds (T90)

• Accuracy: ± 2% of full scale or ± 3% LEL (whichever is greater)

• Operating Temperature: -40°C to +75°C (-40°F to +167°F)

• Enclosure Rating: IP66/67

• Certifications: ATEX, IECEx, FM, CSA

• Description: Highly reliable IR detector for methane and other hydrocarbons.

• Key Parameters:

• Honeywell Sensepoint XCD (Toxic and Oxygen Gas Detector)

• Detection Principle: Electrochemical (for toxic and O2)

• Gases Detected: Carbon Monoxide (CO), Hydrogen Sulfide (H2S), Oxygen (O2), Chlorine (Cl2), Ammonia (NH3), and many others (sensor specific)

• Measuring Range: Varies by gas (e.g., CO: 0-500 ppm, H2S: 0-100 ppm, O2: 0-25% vol)

• Output: 4-20mA linear, RS-485 Modbus (optional)

• Response Time: Typically < 30 seconds (T90) for toxic gases

• Accuracy: ± 5% of reading or ± 3% full scale (whichever is greater)

• Operating Temperature: -40°C to +55°C (-40°F to +131°F)

• Enclosure Rating: IP66

• Certifications: ATEX, IECEx, FM, CSA

• Description: Compact, robust detector for a wide range of toxic gases and oxygen.

• Key Parameters:

• Honeywell Impact Series (Portable Gas Detector - for comparison/complementary use)

• Gases Detected: Up to 4 gases simultaneously (e.g., LEL, O2, CO, H2S)

• Sensors: Catalytic bead (LEL), electrochemical (toxic/O2)

• Display: LCD with simultaneous gas readings

• Alarm: Audible (95dB), visual (LED), vibrating

• Battery Life: Up to 20 hours (alkaline), 12 hours (rechargeable)

• *Note: While System 57 is fixed, Honeywell’s portable Impact series are often used in conjunction for personal safety.*

• Description: Multi-gas portable detector for personal monitoring.

• Key Parameters (e.g., Impact Pro):