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2026-07-27 10:10:34
HONEYWELL 05701-A-0302 vs. 05701-A-0301: Key Differences and Selection Guide for System 57
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What Is the Honeywell 5701 System 57 Single Channel Control Card? Why Is Choosing the Right Input Type Crucial for Gas Detection?
The Honeywell 5701 System 57 is a microprocessor-based, 19-inch 3U gas detection control system supporting up to 16 channels. Its Single Channel Control Card—model 05701-A-0301 for 4–20 mA or 05701-A-0302 for catalytic inputs—serves as the core signal processor. Selecting the correct card ensures reliable sensor drive, accurate alarm detection, and continuous plant safety.
Honeywell 05701‑A‑0302: Catalytic Control Card for System 57
The Honeywell 05701‑A‑0302 is a single‑channel control card for catalytic bridge detectors in System 57. It drives sensors, displays gas concentration with three alarms, supports Modbus RTU, operates at 18–32V DC, and fits 3U racks with front‑panel LED status and calibration capability. Select it for catalytic inputs.
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Identical in size and System 57 rack fit, 05701-A-0301 handles 4–20 mA while 05701-A-0302 drives catalytic bridges via fixed modules. Both coexist in one rack but cannot be swapped. Verify original part numbers and sensor type before replacement to prevent damage.
Honeywell 05701‑A‑0301 vs. 05701‑A‑0302: Input Differences, Interchangeability, and System Integration
Find Your PartSelection and Sourcing Guide
for Honeywell 05701‑A‑0301 vs. 0302 in System 57
Choose 0302 for catalytic sensors (e.g., methane) and 0301 for 4–20 mA from electrochemical/IR/PID. Match with correct Engineering and Field Interface cards, plus optional relays. As 0302 is discontinued, source tested spares from suppliers like Amikon. Correct selection ensures compatibility and reliable gas detection.
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Get Sourcing SupportFrequently Asked Questions
Q:Can 05701-A-0301 replace 05701-A-0302?
A:Not as a direct replacement. The correct model depends on the connected detector type, sensor drive module, field wiring, and original System 57 configuration.
Q:Can 05701-A-0301 and 05701-A-0302 be installed in the same System 57 system?
A:Yes. Different channels within a modular System 57 installation can use different control card types, provided that each channel is correctly matched with its detector and sensor drive configuration.
Q:Where can users find discontinued Honeywell System 57 spare parts?
A:Discontinued Honeywell System 57 spare parts may be sourced through specialized industrial automation spare-part suppliers such as AMIKON. Users should provide the complete original part number to improve replacement identification accuracy.
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