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Yokogawa AMN33 Product Documentation
Product Introduction
The Yokogawa AMN33 is a high-performance modular signal conditioner designed for industrial automation and process control applications. It provides reliable signal conversion, isolation, and amplification for various sensor inputs, including temperature (RTD, thermocouple), voltage, and current signals. The AMN33 is part of Yokogawa’s extensive lineup of signal conditioning solutions, known for their precision, durability, and adaptability in harsh industrial environments.
This unit is widely used in industries such as oil & gas, chemical processing, power generation, and manufacturing, where accurate signal transmission is critical. Its compact design and DIN-rail mounting capability make it easy to integrate into control panels and distributed I/O systems.
Product Specifications
| Parameter | Specification |
|---|---|
| Input Signals | RTD (Pt100, JPt100), Thermocouple (J, K, R, S, B, E, T, N), DC Voltage (±10V, 1-5V), DC Current (4-20mA, 0-20mA) |
| Output Signals | 4-20mA, 1-5V, 0-20mA, 0-10V (isolated) |
| Isolation | Input/Output/Power: 1500V AC (1 min) |
| Accuracy | ±0.1% of span (for voltage/current), ±0.2°C (for RTD), ±1°C (for thermocouple) |
| Operating Temp. | -20°C to +60°C |
| Storage Temp. | -40°C to +85°C |
| Power Supply | 24V DC ±10% (20-30V DC range) |
| Power Consumption | 2.5W max |
| Dimensions | 120 × 80 × 40 mm |
| Weight | 0.3kg |
| Mounting | DIN rail (35mm) |
| Certifications | CE, UL, CSA, IEC 61010-1 |
Applications
The Yokogawa AMN33 is used in various industrial scenarios where signal conditioning and isolation are required:
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Process Control Systems: Converts and isolates sensor signals for PLCs and DCS.
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Temperature Monitoring: Interfaces RTDs and thermocouples with control systems.
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Power Plants: Ensures reliable signal transmission in high-noise environments.
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Oil & Gas: Provides signal integrity in hazardous areas.
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Manufacturing Automation: Used in motor control, pressure monitoring, and flow measurement.
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Laboratory Equipment: Ensures precision in test and measurement setups.
Product Advantages
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High Accuracy: Delivers precise signal conversion with minimal drift.
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Robust Isolation: 1500V AC isolation prevents ground loops and noise interference.
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Wide Compatibility: Supports multiple input types (RTD, thermocouple, voltage, current).
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Compact & Durable: DIN-rail mounting saves space, and the rugged design withstands harsh conditions.
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Easy Configuration: Simple setup via DIP switches or software (depending on model).
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Global Certifications: Complies with CE, UL, and IEC standards for safety and reliability.
Frequently Asked Questions (FAQ)
Q1: What is the difference between AMN33 and AMN32?
A1: The AMN33 offers broader input signal compatibility (including RTD and thermocouple) compared to the AMN32, which is primarily for current/voltage signals.
Q2: Can the AMN33 be used in hazardous areas?
A2: The standard AMN33 is not intrinsically safe. For hazardous locations, consider Yokogawa’s IS (Intrinsically Safe) versions.
Q3: How do I calibrate the AMN33?
A3: Calibration requires a precision signal source and multimeter. Adjustments can be made via internal trim pots or software (if supported).
Q4: What is the lifespan of the AMN33?
A4: Under normal operating conditions, the AMN33 has a lifespan of 5+ years.
Q5: Does the AMN33 support HART communication?
A5: No, the AMN33 is a basic signal conditioner. For HART compatibility, consider Yokogawa’s YTA series.
Q6: Can I use the AMN33 with a 110V AC power supply?
A6: No, it requires 24V DC power only.
Q7: What is the response time of the AMN33?
A7: Typically < 500ms for full-scale step changes.
Q8: Is the AMN33 waterproof?
A8: No, it is designed for indoor use (IP20 rating).
Q9: Can multiple AMN33 units be daisy-chained?
A9: No, each unit requires independent wiring.
Q10: Where can I buy replacement modules?
A10: Authorized Yokogawa distributors or direct from Yokogawa’s service centers.
Recommended Related & Popular Models
Same Series / Related Models
| Model | Description |
|---|---|
| AMN32 | Basic current/voltage signal conditioner |
| AMN34 | Dual-channel signal conditioner |
| AMN51 | High-density signal conditioner |
| YTA110 | Temperature transmitter with HART |
| YTA320 | Flange-mounted temperature transmitter |
| YTA430 | High-accuracy temperature transmitter |
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