Description
The Honeywell 05701-A-0326 is a single-channel control card designed for the System 57 gas detection platform. It interfaces with a wide range of gas sensors to provide real-time monitoring, alarm signaling, and equipment interlocking for industrial safety.
Product Parameters (Datasheet)
- Model Number: 05701-A-0326
- Series: System 57
- Module Type: Single Channel Gas Control Card
- Input Signal: 4-20mA (Current Loop) or Bridge Input (Catalytic Bead)
- Operating Voltage: 18V to 32V DC
- Power Consumption: Typically < 3.5 Watts
- Display: 4-character high-visibility LED display (7-segment)
- Alarm Levels: 3 user-programmable alarm levels (A1, A2, A3)
- Relay Outputs: 3 Alarm relays and 1 Fault relay (SPDT contacts)
- Mounting: Standard System 57 rack (3U high)
HONEYWELL 05701-A-0326
HONEYWELL 05701-A-0326
HONEYWELL 05701-A-0326
Country of Origin
This safety-critical component is manufactured by Honeywell Analytics (formerly Zellweger Analytics) in the United Kingdom, adhering to strict ATEX and SIL (Safety Integrity Level) standards for gas monitoring.
Application Fields
The 05701-A-0326 is a staple in hazardous area monitoring:
- Oil & Gas Refineries: Detecting combustible gases (HC) and toxic gases like H2S or CO.
- Chemical Plants: Monitoring for leaks in storage areas and processing lines.
- Wastewater Treatment: Detecting methane build-up or oxygen deficiency in confined spaces.
- Manufacturing: Ensuring safety in areas using industrial solvents or refrigerant gases.
Product Usage Instructions
- Rack Integration: Slide the card into an available slot in the System 57 rack. Ensure the rear connectors are fully engaged with the backplane.
- Sensor Selection: Configure the internal jumpers or software settings to match the type of sensor being used (e.g., Catalytic Bead for flammables or Electrochemical for toxics).
- Wiring: Connect the field sensor wiring to the corresponding terminals on the backplane module. For 4-20mA sensors, ensure the loop is correctly powered.
- Calibration: Use the front-panel buttons to perform “Zero” and “Span” calibrations. This ensures the digital display accurately reflects the gas concentration detected by the field sensor.
- Alarm Configuration: Set the threshold levels for the three alarms. Configure the relays for “Energized/De-energized” and “Latching/Non-latching” operation based on your plant’s safety logic.
Product Technical Description
The 05701-A-0326 acts as a localized controller for a single gas point. Technically, it provides the “excitation” voltage required by the sensor and then processes the returning analog signal. The card features sophisticated “Inhibit” and “Fault” logic; if the sensor signal drops below 4mA (indicating a cable break) or if the sensor becomes poisoned, the card triggers a Fault relay to alert the operator. The integrated LED display provides immediate local feedback on the gas concentration, which is critical for technicians performing onsite inspections.
Q&A (Common Questions)
Q: Can I use this card with a 3-wire gas detector? A: Yes, the 05701-A-0326 supports 3-wire (source or sink) 4-20mA inputs, which are common for infrared or open-path gas detectors.
Q: What is the difference between the 05701-A-0326 and the 05704 cards? A: The 05701 is a single-channel card (one sensor per card), whereas the 05704 is a four-channel card designed for higher density in the same rack space.
Q: Does this card require a separate display module? A: No, the 05701-A-0326 has an integrated LED display on the front panel for local readings.
Q: How do I clear a latched alarm? A: Once the gas concentration has dropped below the threshold, you can press the “Reset” button on the front of the card or use a remote reset signal through the backplane.
Similar Model Recommendations
- Honeywell 05704-A-0144 (4-Channel Control Card)
- Honeywell 05701-A-0301 (Alternative revision of the single-channel card)
- Honeywell 05701-A-0325 (Variant for specific sensor types)
- Honeywell 05704-A-0145 (4-Channel variant)
- Honeywell System 57 Engineering Key (Required for deep configuration changes)
For technical support or to procure the Honeywell 05701-A-0326, please contact our gas detection and safety specialists.
