Honeywell 2104B2081 Medium Range Transmitter

Configured for precise industrial sensing in hazardous environments, the Honeywell 2104B2081 (2104B2081 Transmitter) provides direct physical/electrical execution of signal transmission within ATEX-rated systems.

Hardware Specifications

Process Control and DCS Connectivity

• 4-20 mA HART Loop Protocol: The transmitter supports standard industrial loop protocols, ensuring seamless integration with existing DCS and SCADA signal paths. HART capability enables bidirectional communication for device configuration and diagnostic health monitoring.
• Galvanic Isolation: The transmitter circuitry is designed to maintain isolation from the field-side environment, minimizing the risk of ground loops and common-mode interference in signal-sensitive control loops.
• Environmental Integrity: The ATEX-rated conduit entry and housing construction provide protection against atmospheric hazards, ensuring deterministic performance in potentially explosive atmospheres.

Frequently Asked Questions (FAQ)

Q: Does the transmitter require intrinsic safety barriers for installation?

A: Yes. When installed in hazardous areas requiring ATEX compliance, the transmitter must be connected through appropriate safety barriers to limit electrical and thermal energy.

Q: Is this transmitter compatible with HART 7 protocol?

A: Compatibility is dependent on the internal firmware version. Verify the device revision against the host controller's DD (Device Description) files to ensure full functional integration.

Field Installation Guidelines

• Conduit Sealing: Ensure the conduit entry is sealed according to local hazardous area regulations (e.g., Ex d or Ex i standards). Use only ATEX-certified glands and seals to maintain the explosion-proof integrity of the housing.
• Wiring Termination: Use twisted-pair, shielded cabling for the 4-20 mA loop. Terminate the shield at a single point, typically the system ground, to prevent circulating currents.
• Mounting Stability: The transmitter housing is robust (10 kg class). Mount the unit to a rigid support structure to prevent vibration-induced fatigue on the process connection and conduit fittings.
• Grounding: Maintain a low-impedance ground connection to the transmitter chassis. This is mandatory for both EMI/RFI mitigation and safety in ATEX-rated applications.
• Validation: Perform a dry-loop test before process media is introduced to the transmitter. Verify that the output signal spans the full 4-20 mA range corresponding to the calibrated process range.