ABB DHH805-A Handheld HART Field Communicator IP54 Terminal

Product Overview

The DHH805A is a high-performance handheld HART communicator engineered by ABB for comprehensive field configuration, calibration, and troubleshooting of smart process instruments. Designed for mobile plant technicians, this portable terminal features a high-contrast 240 x 320 pixel backlit LCD display with an intuitive, menu-driven tactile interface. Equipped with an 8 GB SD memory card, the DHH805A stores thousands of Device Descriptions (DDs) and field configuration profiles. Weighing approximately 0.4 kg including batteries, it delivers outstanding portability and operational endurance with up to 100 hours of continuous run time. Housed in an IP54-rated enclosure with versatile dual USB and RS-232 connectivity, the ABB DHH805A ensures dependable performance across demanding industrial environments.

Core Technical Advantages

• Extended Battery Autonomy: Provides up to 100 hours of continuous operation without backlighting (60 hours at minimum backlight) using standard AA batteries or an optional rechargeable Ni-MH battery pack.
• Expansive Device Description Storage: Integrated 8 GB SD card capacity accommodates vast libraries of HART device description files for seamless multi-vendor instrument support.
• Rugged Industrial Design: Certified IP54 for dust and water splash protection, featuring a wide operating ambient temperature range of -10°C to +70°C for harsh field service conditions.

Technical Specifications

Industrial Applications

• Field Instrument Commissioning: Configures zero, span, and operating parameters for smart pressure, temperature, and level transmitters across plant networks.
• Process Plant Maintenance: Performs real-time diagnostics, loop tests, and HART device troubleshooting on active control loops.
• Chemical & Petrochemical Facilities: Provides portable parameter adjustments and device health polling in harsh process processing units.
• Water & Wastewater Treatment: Manages field flowmeters and analytical sensors deployed across distributed treatment facilities.

Wiring & Installation

• Communicator Loop Connection: Connect the DHH805A test leads in parallel across the 4–20 mA field device terminals or across a minimum 250 Ohm loop resistor.
• Power Supply Setup: Insert four AA 1.5V alkaline batteries or install the sealed rechargeable Ni-MH battery pack into the battery compartment, ensuring correct polarity.
• PC Synchronization: Use the built-in USB or RS-232 connection to link the communicator to a PC for updating Device Description (DD) libraries on the SD card.
• Power Management Configuration: Access the user setup menu to program the auto power-off timer to optimize battery longevity during field audits.

Engineering Advantages

• Tactile Feedback Keypad: Enables fast, reliable navigation through complex parameter menus even when technicians wear protective work gloves.
• Low Operating Weight: At approximately 0.4 kg, it reduces user fatigue during prolonged field walking audits and site calibrations.
• Flexible Thermal Thresholds: Operates reliably down to –10°C and up to +70°C, accommodating diverse climate deployment requirements.

Technical FAQs

Q1: What thermal limit applies when using Ni-MH battery packs?
A1: Ambient operating temperatures must not exceed +55°C (+131°F) when powered by rechargeable Ni-MH units.

Q2: How much memory capacity is available for device libraries?
A2: The ABB DHH805A includes an integrated 8 GB SD memory card for extensive Device Description profiles.

Q3: Does the communicator support standard PC data connections?
A3: Yes, built-in USB and RS-232 serial interfaces enable seamless software updates and PC data syncing.