Process Transmitter + Control Unit RMA42
Technical Data
CompareProcess transmitter
| Measuring Principle | Process transmitter |
| Measuring principle | Process transmitter |
| Function | Universal process and temperature transmitter with control unit |
| Loop power supply | 24 V intrinsically safe loop power supply |
| Power Supply | Wide range power supply 24 to 230 V AC/DC (-20 % / +10 %) 50/60 Hz |
| Input | 2 x universal (current, voltage, R, RTD, TC, resistance) |
| Output | 2 x Analog (current, voltage) |
| Software functions | Internal software for calculations, linearization, limit monitoring Monitoring of sensor wires according NAMUR NE43 Application package differential pressure measurement |
| Certificates | ATEX [Ex ia] CSA General Purpose CSA AIS, NI FM AIS, NI NEPSI [Ex ia] UK [Ex ia Ga], [Ex ia Da] marine approval KTA German WHG overfill protection IND Ex PESO Ex IND Ex PESO Ex IEC Ex |
| SIL | 2 |
| Display | LCD 7 segment Multicolour Bargraph TAG unit Colour change in case of failure |
| Interface | Not defined |
| Dimensions (WxHxD) | 45 x 115 x 118 mm (1.77" x 4.53" x 4.65") |
The process transmitter identifies, evaluates and calculates analog measured values. It can supply power to two-wire sensors via the built-in loop power supply. Universal inputs allow the connection of current, voltage, resistance thermometers and thermocouples. Limit values can be monitored and relays switched. Process signals can be transmitted via the analog output. The built-in “differential pressure” application package allows fast and easy commissioning of differential pressure applications.
Advantages
SIL 2 approval (optional), marine approval
1 or 2 calculated values and linearization table
Stores minimum/maximum values
5-digit 7-segment backlit LCD display
1 or 2 universal inputs
2 relays (optional)
Digital status output (open collector)
Areas of application
The RMA42 process transmitter has analog inputs for display, process and status signals, analog and digital outputs, and a setup interface. Connected sensors can be supplied by the built-in LPS. All measured and calculated values can be used as signal sources for display, outputs, relays and interfaces.
Plant and equipment design
Control rooms and cabinets
Process control, recording and supervision
Signal conditioning and conversion
Overflow protection (WHG)
Technical documentation
Technical data
Documents/Manuals/Software
Accessories/Spare parts
Source:Endress+Hauserwebsite public information
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Process Measuring and Control Instrument Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Process Measuring and Control Instrument.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Process Measuring and Control Instrument for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Process Measuring and Control Instrument Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Process Measuring and Control Instrument.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Process Measuring and Control Instrument for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Process Measuring and Control Instrument Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Process Measuring and Control Instrument.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Process Measuring and Control Instrument for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Process Measuring and Control Instrument Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Process Measuring and Control Instrument.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Process Measuring and Control Instrument for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
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