Description

Yokogawa BT200 BRAIN Terminal (Hand‑held Communicator)

Core Overview

• Full Name: BT200 BRAIN Terminal (Hand‑held Communicator)
• Protocol: Yokogawa proprietary BRAIN (works over 4–20 mA DC loop)
• Status: Discontinued (replaced by FieldMate)Yokogawa
• Main Use: Configure, calibrate, monitor, and diagnose Yokogawa BRAIN‑enabled instruments

Key Functions

• Parameter Setup: Tag number, measurement range, output mode, engineering units
• Monitoring: PV/SV, I/O values, self‑diagnostic results
• Calibration: Zero adjustment, constant current output simulation
• Data: On‑site printout (with optional printer BT200‑P00)
• Online Operation: Communicates without interrupting 4–20 mA DC signal

Technical Specifications

Physical & Power

• Dimensions: 228 × 110 × 51 mm
• Weight: ~510 g (without batteries)
• Power: 5 × AA 1.5 V alkaline batteries
• Display: LCD dot matrix, 21 characters × 8 lines (English)
• Keypad: 4 function keys + 20 operation keys
• Protection: Basic industrial handheld (not IP‑rated for harsh immersion)

Communication

• Interface: Connect to 4–20 mA DC signal lines or ESC card dedicated port
• Protocol: BRAIN (Yokogawa proprietary)
• Compatibility: All Yokogawa BRAIN instruments (EJA, ADMAG, YEWFLO, YTA, etc.)

Protection Features

• Password protection for parameters
• Low‑battery alarm
• Auto power‑off
• Self‑diagnostic checks

Model Variants

• BT200‑N00: Basic unit (no printer)
• BT200‑P00: With built‑in thermal printer for on‑site reports

Replacement & Compatibility

• Official Replacement: Yokogawa FieldMate (supports BRAIN, HART, FOUNDATION Fieldbus, Profibus PA)Yokogawa
• Legacy Use: Still widely used for maintaining older BRAIN‑based systems (EJA series, etc.)

Typical Applications

• Field setup/calibration of EJA pressure/differential pressure transmitters
• Configuration of Yokogawa flowmeters (ADMAG, YEWFLO)
• On‑site troubleshooting and diagnostics for BRAIN instruments
• Commissioning of process loops with 4–20 mA + BRAIN