
Specs at a glance
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Input
2 x universal (current, voltage, R, RTD, TC, resistance)
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Output
2 x Analog (current, voltage)
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Display
LCD
7 segment
Multicolour
Bargraph
TAG unit
Colour change in case of failure -
Power Supply
Wide range power supply 24 to 230 V AC/DC (-20 % / +10 %) 50/60 Hz
Field of application
Analog measured values are indicated, evaluated and calculated by the process transmitter. With the integrated loop power supply two-wire sensors can be powered. The universal inputs enable the connection of current, voltage, RTDs and TCs. Limit values can be monitored and relays can be switched. Via analog outputs process signals can be forwarded. The integrated application package "differential pressure" allows the quick and easy commissioning for differential pressure applications.
The RMA42 process transmitter exhibits a display, analog inputs for process and status signals, analog and digital outputs, and an interface for configuration. Connected sensors can be powered by the integrated LPS. All measured and calculated values are available as a signal source for display, outputs, relays and the interface.
Plant and apparatus engineering
Control rooms and cabinets
Process control, recording and supervision
Signal adjustment and conversion
Overfill protection (WHG)
Benefits
SIL 2 approval (optional);
Marine approval
1 or 2 calculated values and linearization table
Min./max. value saved
5-digit 7-segment LC display, backlit
1 or 2 universal inputs
2 relays (optional)
Digital status output (Open Collector)
Videos
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Explained in under 2 minutes - RMA42 process transmitter
Lean selection
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
-
Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
Success stories
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Measuring principle
Process transmitter
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Measuring principle
Process transmitter
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Function
Universal process and temperature transmitter with control unit
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Loop power supply
24 V intrinsically safe loop power supply
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Power Supply
Wide range power supply 24 to 230 V AC/DC (-20 % / +10 %) 50/60 Hz
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Input
2 x universal (current, voltage, R, RTD, TC, resistance)
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Output
2 x Analog (current, voltage)
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Software functions
Internal software for calculations, linearization, limit monitoring
Monitoring of sensor wires according NAMUR NE43
Application package differential pressure measurement -
Certificates
ATEX
FM
NEPSI
CSA
UKCA
UR C/US
marine approval
KTA
German WHG overfill protection -
SIL
2
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Display
LCD
7 segment
Multicolour
Bargraph
TAG unit
Colour change in case of failure -
Interface
Not defined
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Dimensions (WxHxD)
45 x 115 x 118 mm (1.77" x 4.53" x 4.65")
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Technical Information (TI)
TI RMA42
English version - 01/2025
New version available in English
Process transmitter with control unit
EN 13/01/202504/03/202231/07/201910/03/201602/11/2015Language:
English
Version:
13/01/2025
File size:
1 MB
File name:
TI00150REN_0825-00.pdf
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-
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Operating Instruction (BA)
BA RMA42
English version - 01/2025
New version available in English
Process transmitter with control unit
EN 13/01/202504/03/202231/07/201910/03/201602/11/2015Language:
English
Version:
13/01/2025
File size:
1.8 MB
File name:
BA00287REN_0825-00.pdf
-
-
-
Technical Information (TI)
TI RMA42
-
Technical Information (TI)
English version - 01/2025Process transmitter with control unit
EN 13/01/202504/03/202231/07/201910/03/201602/11/2015Language:
English
Version:
13/01/2025
File size:
1 MB
File name:
TI00150REN_0825-00.pdf
-
-
-
Operating Instruction (BA)
BA RMA42
-
Operating Instruction (BA)
English version - 01/2025Process transmitter with control unit
EN 13/01/202504/03/202231/07/201910/03/201602/11/2015Language:
English
Version:
13/01/2025
File size:
1.8 MB
File name:
BA00287REN_0825-00.pdf
-
-
-
Short Instruction (KA)
KA RMA42
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Short Instruction (KA)
English version - 01/2025Process transmitter with control unit
EN 13/01/202504/03/202231/07/201924/06/201627/03/2015Language:
English
Version:
13/01/2025
File size:
1.2 MB
File name:
KA00286REN_1925-00.pdf
-
-
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Installation Instructions (EA)
RMA42X-HA
-
Installation Instructions (EA)
English version - 01/2025Einbauanleitung für den Austausch des Display des RMA42
EN 30/01/2025Language:
English
Version:
30/01/2025
File size:
250 KB
File name:
71098916.pdf
-
-
-
Installation Instructions (EA)
RMA42X-Nx
-
Installation Instructions (EA)
English version - 01/2025Einbauanleitung für den Austausch des Powerbaord des RMA42
EN 30/01/2025Language:
English
Version:
30/01/2025
File size:
1.6 MB
File name:
71098919.pdf
-
-
-
Installation Instructions (EA)
RMA42X-Nx
-
Installation Instructions (EA)
English version - 01/2025Einbauanleitung für den Austausch des Mainboard RMA42
EN 30/01/2025Language:
English
Version:
30/01/2025
File size:
1.6 MB
File name:
71098917.pdf
-
-
-
Installation Instructions (EA)
RMA42T-
-
Installation Instructions (EA)
English version - 01/2025Einbauanleitung für den Austausch des CPU Karte inkl. Display RAM42
EN 30/01/2025Language:
English
Version:
30/01/2025
File size:
1.6 MB
File name:
71098914.pdf
-
-
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Installation Instructions (EA)
RMA42X-DA
-
Installation Instructions (EA)
English version - 01/2025Einbauanleitung für den Austausch des Display des RMA42
EN 30/01/2025Language:
English
Version:
30/01/2025
File size:
259.3 KB
File name:
71098915.pdf
-
-
-
Installation Instructions (EA)
RMA42X-Nx
-
Installation Instructions (EA)
English version - 01/2025Einbauanleitung für den Austausch des Mainbaord des RMA42
EN 30/01/2025Language:
English
Version:
30/01/2025
File size:
1.6 MB
File name:
71098917.pdf
-
-
-
Installation Instructions (EA)
RMA42X-Nx
-
Installation Instructions (EA)
English version - 01/2025Einbauanleitung für den Austausch des Powerboard RMA42
EN 30/01/2025Language:
English
Version:
30/01/2025
File size:
1.6 MB
File name:
71098919.pdf
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