Features:
- Four-Channel Control Interface for 4-20mA Gas Detection Loops
- Integrates Signal Processing, Display, and Alarm Functions for Up to Four Detectors
- Compatible with 4-20mA Input Gas Detectors and Optional Analogue Output Modules
The HONEYWELL 05704-A-0145 operates as the Four Channel Control Card 4-20mA in a gas detection system, providing comprehensive control, display, and alarm facilities for up to four connected gas detectors. It continuously processes incoming 4-20mA sensor signals, drives the connected sensors with necessary voltages and currents, and displays signal levels one at a time on the front panel liquid crystal display. Seamless alarm indication is standard with the 05704-A-0145, and using optional Analogue Output Modules will allow remote output of channel card readings with either current source or current sink configurations as required. The 05704-A-0145 has made improvements in configurability over previous designs in addition to incorporating fully definable microprocessor-controlled operation for a wide range of connected gas detectors and application requirements.
The 05704-A-0145 provides essential control functions for up to four loops of gas detection, and is a critical component of the safety monitoring path, directly affecting the proper, normal operation of the overall gas detection system. One 05704-A-0145 control card is required per set of four gas detection channels. The 05704-A-0145 occupies a dedicated slot in the rack and features a front panel backlit display along with LEDs for alarm indication and a push-button for alarm reset and Engineering Card selection.
For multi-channel gas detection applications, the system requires the 05704-A-0145 control card installed to manage the connected 4-20mA gas detectors. In addition to standard single card operation, the 05704-A-0145 performs continuous self-validation. The 05704-A-0145 executes self-monitoring using its internal microprocessor and stored EEPROM configuration. Using this method, the control card continually monitors the health of its circuit components, software operation, and sensor condition. If the 05704-A-0145 detects that a pre-defined alarm limit is exceeded, it will automatically raise alarms by lighting up front panel LEDs and operating connected relays, and inform other cards with the alarm status information.
The 05704-A-0145 HONEYWELL Four Channel Control Card may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
HONEYWELL 05704-A-0145 Four Channel Control Card Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
HONEYWELL 05704-A-0145 Four Channel Control Card Catalytic Specs
General
- Manufacturer HONEYWELL
- Model 05704-A-0145
- Condition New Original ready stock
- Product Family 05704-A-0144,05704-A-0121,05704-A-0131
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Petrochemical & Oil/Gas: Monitoring for hazardous leaks in storage tank farms, refineries, and along pipelines.
- Manufacturing & Workshops: Detecting toxic or flammable gas buildup (e.g., carbon monoxide, methane, or chlorine) in factory environments.
- Environmental & Municipal: Monitoring sewage treatment plants and landfills for explosive or harmful gases.
- Indoor Air Quality: Used in industrial HVAC and large-scale facilities to ensure breathable air standards.
- EMC Compliance: Tested for electromagnetic compatibility to ensure stable operation near other industrial equipment.
- Hazardous Area Certifications: When used in a complete system, it supports installations requiring ATEX, IECEx, UL, and CSA certifications for explosive atmospheres.
- Quality Standards: Manufactured under ISO quality management protocols.
- Sensor Compatibility: Works with any standard industrial gas detector that provides a 4-20mA current loop output, including flame, smoke, and heat detectors.
- Rack System Interoperability: Fits into standard 19-inch (up to 64 channels) or half 19-inch (up to 32 channels) sub-racks. It can be "freely mixed" in the same rack as the 05704-A-0144 (catalytic version) or fire control cards.
- Interface Modules: Connects to Quad Relay Interface Cards for field wiring and relay outputs. Optional analogue output modules can be added for isolated 0–20mA or 4–20mA remote monitoring.
- DCS/PLC Integration: Supports digital communication via an optional Modbus RS-485 serial module, allowing it to be monitored and configured by external SCADA, DCS, or PLC systems.
- Maintenance: Requires a System 57 Engineering Card for initial setup, calibration, and performance diagnostics.