Endress+Hauser RMA 422 Process Transmitter with Flexible Connection Options 1 pcs

Versatile Endress+Hauser RMA 422 Process Transmitter with Flexible Connection Options

The Endress+Hauser RMA 422 is a versatile Process Transmitter and Indicator designed for reliable reception, processing, conversion, and display of analog input signals from various field sensors in industrial automation systems. Manufactured by Endress+Hauser, this instrument is a reliable solution for visualization and integration of measured values.

The device accepts standard analog input signals such as 4-20 mA or 0-10 V, coming from pressure, flow, level, temperature, and other measurement sensors. It functions as an accurate field indicator, displaying the current process values on its integrated display.

One of the key features of the RMA 422 is its flexible electrical connection options. The instrument is equipped with convenient screw terminals. According to the documentation and visible layout, terminals 61 and 62 are typically used for connecting the wide-range AC/DC power supply, from 24 to 230 V AC/DC. Other terminals, such as terminal 10, along with others (exact assignment depends on the instrument's configuration and wiring diagram), are used for connecting analog input signals from sensors, analog output signals (e.g., for re-transmission), or digital signals (e.g., for alarm or control functions). The integrated loop power supply allows for powering connected two-wire sensors directly from the transmitter.

The versatility of the RMA 422 makes it suitable for a wide range of applications in various industries, including chemical, food & beverage, water treatment, and energy, where accurate display and reliable transmission of process parameters are required.

Key Features and Benefits:

• Instrument Type: Process Transmitter / Indicator.
• Universal Inputs: Accepts various types of analog signals (current, voltage, RTD, TC, resistance).
• Flexible Power Supply: Wide range input voltage 24-230 V AC/DC.
• Convenient Connection Terminals: Screw terminals for easy wiring.
• Integrated Loop Power Supply: Can power two-wire sensors.
• Value Display: Integrated display for local monitoring.
• Reliability: Endress+Hauser quality for industrial environments.
• Modular Design: Expandable functionality (output signals, relays) depending on configuration.

Technical Specifications (based on available data):

• Brand: Endress+Hauser
• Model: RMA 422
• Instrument Type: Process Transmitter / Indicator
• Input Signals: Analog (0/4-20 mA, 0-10 V, and others depending on configuration)
• Power Supply: 24-230 V AC/DC (-20% / +10%)
• Power Consumption: Max. 21.5 VA / 6.9 W (for certain configurations)
• Output Signals: Configurable analog and/or digital (depends on modification, e.g., 1 or 2 analog outputs, relays)
• Mounting: 35mm DIN rail or panel mounting (depending on housing)
• Display: Integrated 2-line display (similar to photo), multi-segment/multicolour depending on version
• Ambient Operating Temperature: E.g., -10 ... +55°C (may vary by configuration)
• Protection Rating: IP20 (standard for DIN rail mounting), potentially higher for panel mount versions.
• Certifications: CE, UL listed, CSA GP (depends on configuration), SIL 2 capable
• Connection Terminals: Screw terminals (e.g., 61, 62 for power; 10 and others for signals)

The Endress+Hauser RMA 422 is a reliable and flexible instrument for signal processing in industrial systems, providing accurate display and efficient integration of data from field sensors.

Mannual for Endress+Hauser RMA422-A21A22A