AMM11

Product Overview

The Yokogawa AMM11 is a microprocessor-based magnetic flow converter designed to accurately measure volumetric flow rate of conductive liquids in industrial processes.

Technical Specifications

Functional Performance
• Flow Rate Display: 5-digit LCD with maximum indication of 30,000 and configurable decimal point (0–4 places)
• Data Security: Built-in EEPROM storage, no backup battery required

Input & Output Signals
• Status Input: Dry contact with ON resistance ≤ 200 Ω and OFF resistance ≥ 100 kΩ
• Current Output: 4–20 mA DC with maximum load resistance of 1000 Ω
• Pulse Output: Transistor contact rated 30 V DC, 200 mA; 0.0001–1000 pps

Communication & Cabling
• Protocols: BRAIN or HART communication superimposed on 4–20 mA signal
• Load Resistance (BRAIN): 250–600 Ω
• Load Resistance (HART): 230–600 Ω depending on loop configuration
• Maximum Cable Length: Approximately 2 km using specified industrial control cables

Installation & Physical Specs
• Enclosure Protection: NEMA 4X / IP67 equivalent
• Case Material: Aluminum alloy with corrosion-resistant polyurethane coating
• Mounting Options: 2-inch pipe, wall, or panel mounting
• Electrical Connections: ANSI 1/2 NPT, DIN Pg13.5, ISO M20 × 1.5, or JIS G1/2
• Wiring Terminals: ISO M4 
• Grounding: ≤ 100 Ω 

Electrical & Environmental Conditions
• Power Supply AC/DC: 80–138 V AC, 138–264 V AC, or 20–130 V DC (bi-polar)
• Power Consumption: Approximately 18 VA or 11 W
• Ambient Temperature: -10°C to 60°C
• Ambient Humidity: 5% to 95% RH (non-condensing)

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