Description

Yokogawa YHC4100 HART Handheld Communicator (Bare Machine)

Basic Identification

• Model: YHC4100
• Protocol: HART (over 4–20 mA loop)
• Type: Portable handheld communicator
• Status: Active (replaces legacy BT200 BRAIN terminal)
• Bare Machine Definition: Only the communicator unit; no accessories

Core Functions

• Configuration: Set tag, range, output, engineering units
• Monitoring: PV/SV, loop current, diagnostics
• Calibration: Zero/span trim, simulation
• Data Management: Upload/download configs, offline editing
• Firmware/DD Update: Internet‑based upgrades

Technical Specifications (Bare Unit)

Display & Interface

• Display: 128×128 pixel backlit LCD, 13 lines
• Keypad: Full alphanumeric + function keys
• HART Port: Banana jacks (3/4” center)
• Power Input: 5×AA alkaline (not included) or optional AC adapter
• Dimensions: ~220×110×50 mm
• Weight: ~550 g (without batteries)

Compatibility

• HART Revisions: 5, 6, 7
• Universal Support: All HART field devices (Yokogawa EJA, Rosemount, etc.)
• Device Descriptions: 600+ pre‑loaded; expandable via download

What’s Included in a Bare Machine

• Only: YHC4100 communicator unit
• Not Included:
  • Batteries (5×AA)
  • HART lead kit (A900529‑00014: grabbers + 250 Ω resistor)
  • AC adapter (A37003 / 9B000007)
  • RS‑232 cable
  • Soft carrying case
  • User manual
  • Software (DMS, FieldMate)

Typical Accessories (Required for Use)

1. HART Lead Kit (A900529‑00014) – for loop connection
2. 5×AA Alkaline Batteries (or NiMH + charger)
3. Optional: AC adapter, carrying case, RS‑232 cable

Comparison: BT200 vs. YHC4100