Endress+Hauser RMA42 Process Transmitter with Control Unit (Order Code: RMA42-AAD+F1H3Z2)

The Endress+Hauser RMA42-AAD+F1H3Z2 is a versatile 4-wire process transmitter designed for DIN rail mounting, combining signal conditioning, limit monitoring, and control functions in a single compact device. It evaluates and calculates analog measured values from up to two universal sensor inputs, making it ideal for control rooms, cabinets, and plant engineering applications .

Key Features and Product Highlights

• 2 Universal Inputs: Accepts current (0/4-20 mA), voltage, resistance, RTD (Pt100, etc.), and thermocouple signals for maximum flexibility .

• Integrated Loop Power Supply: 24 V intrinsically safe loop power supply to power connected 2-wire sensors directly .

• Wide Power Range: Operates on 24 to 230 V AC/DC (-20% / +10%) for global compatibility without needing external power converters .

• SIL 2 Certified: Optional SIL 2 approval (IEC 61508) for use in safety instrumented systems .

• Clear Local Display: 5-digit 7-segment backlit LCD with multicolor bargraph, TAG display, and color change on failure .

• Built-in Calculations: Internal software for linearization (32 points), limit monitoring, min/max logging, and differential pressure application package .

• Versatile Outputs: 2 analog outputs (current/voltage), 2 relay outputs (optional), and 1 digital status output (open collector) .

• WHG Overfill Protection: Certified for German WHG overfill protection regulations .

• Easy Configuration: On-site via 3 buttons or remotely using FieldCare / DeviceCare software via the configuration interface .

Technical Specifications

Applications

• Plant and Apparatus Engineering: Signal adjustment and conversion for control cabinets .

• Process Control: Monitoring, recording, and supervision of process variables .

• Differential Pressure: Quick commissioning for DP applications with built-in software package .

• Overfill Protection: WHG-compliant limit signal transmitter .

• Marine & Hazardous Areas: Certified for marine and explosion-hazardous locations .

Why Choose the RMA42?

• All-in-One Solution: Combines transmitter, loop power supply, barrier, and limit switch in one device .

• Reduces Wiring Complexity: Integrated functions eliminate the need for multiple discrete components.

• Future-Proof: Wide power range and SIL 2 certification accommodate safety and international power requirements.

• Proven Reliability: Backed by Endress+Hauser's global support and 5-year warranty for Fundamental products .

Order Code Breakdown (Reference)