Description
The Honeywell 05701-A-0325 is a high-performance single-channel control card designed for the System 57 gas detection architecture. It provides the essential interface between a single gas detector and the central monitoring system, offering localized processing, alarm management, and a dedicated status display.
Product Parameters (Datasheet)
- Model Number: 05701-A-0325
- Series: System 57 (Standard Single Channel Control Card)
- Input Type: 4–20mA (3-wire or 2-wire) or Catalytic Bridge (mV) detectors
- Operating Voltage: 18–32V DC
- Power Consumption: < 3.5 Watts
- Output Signal: 4–20mA isolated or non-isolated (Programmable)
- Alarms: 3 programmable alarm levels (A1, A2, A3) plus a Fault alarm
- Relay Outputs: Dedicated relays for Alarm 1, Alarm 2, and Fault (Expandable via relay cards)
- Display: 4-digit LCD with backlighting and analog bar graph
- Mounting: Plugs into the System 57 19-inch rack or cabinet-mounted chassis
HONEYWELL 05701-A-0325
HONEYWELL 05701-A-0325
HONEYWELL 05701-A-0325
Country of Origin
This control module was engineered and manufactured in the United Kingdom by Honeywell Analytics (formerly Zellweger Analytics).
Application Fields
The 05701-A-0325 is a critical safety component used in:
- Oil & Gas Refineries: Monitoring for flammable gases (LEL) and toxic gases like H2S.
- Chemical Plants: Detecting leaks in storage areas and processing units.
- Water Treatment: Monitoring for Chlorine (Cl2) or Oxygen deficiency in confined spaces.
- Power Generation: Hydrogen (H2) leak detection in battery rooms or turbine halls.
- Manufacturing: Monitoring for combustible gas buildup in drying ovens or painting booths.
Product Usage Instructions
- Chassis Installation: Slide the card into an available slot in the System 57 rack. Ensure the card is pushed firmly into the backplane connector and secure the front panel thumbscrews.
- Detector Wiring: Connect the gas sensor to the rear terminal block of the rack corresponding to the card’s slot. Ensure the wiring matches the detector type (e.g., 3-wire 4–20mA).
- Configuration: Use the front-panel “View” and “Edit” buttons to set the gas type, measuring range (e.g., 0–100% LEL or 0–50 ppm), and alarm setpoints.
- Calibration: Perform a zero and span calibration using the System 57 engineering interface to ensure the card’s readings match the field detector’s output.
- Relay Logic: Configure the relay states (Normally Energized/De-energized) and latching status based on your facility’s safety logic.
Product Technical Description
Technically, the 05701-A-0325 acts as an intelligent signal conditioner and decision-maker. It continuously monitors the analog signal from a field detector, comparing it against user-defined safety thresholds. The card features an integrated LCD that provides real-time gas concentration readings and clear status icons. Its modular design allows it to be combined with other cards (such as the 05704-A-0144 4-channel card) within a single System 57 rack to create a highly customized, multi-point gas monitoring solution.
Q&A (Common Questions)
Q: Can this card be used with both catalytic bead and electrochemical sensors? A: Yes. The 05701-A-0325 is versatile and can be configured to accept inputs from catalytic bridge sensors (mV) or standard 4–20mA transmitters.
Q: Does this card provide power to the field detector? A: Yes, the card provides 24V DC power to the field transmitter through the backplane connection.
Q: What is the difference between this and a multi-channel card? A: The 05701-A-0325 is a single-channel card, meaning it has a dedicated display and processing unit for one detector, whereas multi-channel cards (like the 05704 series) manage four detectors per card but share a common display interface.
Q: Is the 4–20mA output isolated? A: The card can be configured for either isolated or non-isolated 4–20mA output depending on the system grounding requirements.
Similar Model Recommendations
- Honeywell 05704-A-0144: 4-Channel Control Card for the System 57.
- Honeywell 05701-A-0326: Variant for specialized toxic gas monitoring.
- Honeywell 05701-A-0301: Engineering card for system configuration.
- Honeywell 05701-A-0406: Relay Expansion card for additional alarm outputs.
- Honeywell 05701-A-0451: DC Input Power card for the System 57 rack.
For technical datasheets or current availability for the Honeywell 05701-A-0325 and other gas detection spare parts, please contact our support team.
