The Honeywell 05701-A-0330 is a high-precision single-channel control card designed for use within the Honeywell Analytics System 57 series. This module is engineered to interface with various gas detectors, providing localized monitoring, alarm signaling, and relay outputs. Known for its compact footprint and high reliability, the 05701-A-0330 is a vital component in safety-critical gas detection systems, ensuring rapid response times and clear status communication in industrial environments.
Key Product Specifications
- Model Number: 05701-A-0330
- System Series: System 57
- Number of Channels: 1 (Single Channel)
- Display: 4-digit LCD with backlight and multi-segment bar graph
- Input Types: 4-20mA, Catalytic bead, or Electrochemical (Bridge input)
- Relay Outputs: 3 configurable alarm relays and 1 fault relay
- Power Requirements: 24 V DC (18 V to 32 V DC range)
- Operating Temperature: -5°C to +55°C
- Dimensions: 170 mm x 25 mm x 120 mm
- Weight: 0.32 kg
- Country of Origin: United Kingdom
Application Fields
The 05701-A-0330 is an essential tool for life safety and asset protection in:
- Petrochemical Refineries: Continuous monitoring for flammable and toxic gas leaks.
- Manufacturing Plants: Detecting solvent vapors or hazardous gases in production areas.
- Offshore Rigs: Providing ruggedized gas detection in space-constrained control rooms.
- Wastewater Treatment: Monitoring for hydrogen sulfide (H_2S) and methane (CH_4) accumulation.
Usage Instructions
- Installation: Slide the control card into a standard System 57 rack slot. Ensure the rear connectors are properly aligned before applying pressure to seat the card.
- Calibration: Perform a zero and span calibration via the front panel buttons. Use the integrated LCD to verify that the readings match the calibration gas concentration.
- Alarm Configuration: Set the A1, A2, and A3 alarm thresholds according to local safety regulations. Relays can be configured as normally energized or de-energized.
- Wiring: Connect the field detector to the corresponding terminals on the rack’s backplane. Ensure proper shielding is used to prevent electromagnetic interference from affecting signal accuracy.
Q&A – Frequently Asked Questions
Q: Can this card be used with both flammable and toxic gas detectors?
A: Yes, the 05701-A-0330 is highly versatile and can be configured to work with different detector types by adjusting the internal jumper settings or software parameters.
Q: What does a “Fault” light on the front panel indicate?
A: A fault light typically indicates a signal under-range (possibly a sensor failure), a cable break, or an internal card self-test failure.
Q: Is it possible to lock the settings to prevent unauthorized changes?
A: Yes, the System 57 cards include a security feature that allows the user to inhibit changes to the configuration without a specific key sequence or passcode.
Product News: Legacy Support and System Upgrades
The Honeywell 05701-A-0330 continues to be a cornerstone of the System 57 family, even as newer digital platforms emerge. Honeywell has reaffirmed its commitment to supporting existing installations by maintaining the production of these cards and providing improved sensor interface firmware. Industry experts note that the 05701-A-0330 remains a preferred choice for modular expansion in facilities where the established infrastructure relies on 19-inch rack-mounted gas control units, offering a cost-effective way to enhance safety without a total system replacement.
