Process indicator

Loop-powered indicator for 4 to 20 mA or HART® signals


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    • 5-digit measured value display with backlighting
    • Voltage drop ≤1 V
    • Powered directly from 4 to 20 mA current loop

    Specs at a glance

    Line voltage drop ≤1 V, display lighting ≤3.9 V
    Display 5-digit measured value display with dimension
    Housing Field or panel housing
    HART® indicator up to four HART® values can be indicated in alternation
    Product / VersionPrice / pcs. in USDOrder code
    InputApprovalHousing1 to 34 to 1011+
    4-20mA current signalNon-hazardous areaPanel 96x48x41.5mm215.-200.-189.- RIA15-AAA1
    Field housing Alu 131x81.5x55.5mm311.-289.-273.- RIA15-AAB1
    Field housing plastic 131x81.5x55.5mm311.-289.-273.- RIA15-AAC1
    Classified areasPanel 96x48x41.5mm287.-267.-253.- RIA15-xxA1
    Field housing Alu 131x81.5x55.5mm383.-356.-337.- RIA15-xxB1
    Field housing plastic 131x81.5x55.5mm383.-356.-337.- RIA15-xxC1
    4-20mA current signal + HARTNon-hazardous areaPanel 96x48x41.5mm242.-225.-213.- RIA15-AAA2
    Field housing Alu 131x81.5x55.5mm338.-314.-297.- RIA15-AAB2
    Field housing plastic 131x81.5x55.5mm338.-314.-297.- RIA15-AAC2
    Classified areasPanel 96x48x41.5mm315.-293.-277.- RIA15-xxA2
    Field housing Alu 131x81.5x55.5mm410.-382.-361.- RIA15-xxB2
    Field housing plastic 131x81.5x55.5mm410.-382.-361.- RIA15-xxC2

    Prices valid until 31.12.2020 in USD per unit (not including shipping and applicable sales tax). See
    Endress+Hauser Terms and Conditions

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  • Application

    The process indicator RIA15 gathers measurment signals and displays them with high resolution and accuracy. The process indicator is suitable for a wide variety of applications e.g. in switch rooms, cabinets, laboratory instrumentation as well as in plant and apparatus construction.


    The RIA15 process display unit is looped into the 4 to 20 mA current loop and measures the transmitted current. The parameterization of the measurement range, the decimal point and the offset can easily be done with the help of three keys on the device. The setting can be done during operation. The measured value indication occurs via a five digit 7-segment LC display. With the optional HART® function up to four measured values of one measurement instrument can be indicated.

    Application example

    Application example of a RIA15 indicator in RIA15 in field and panel versions

    RIA15 as field and panel display

  • Technical data

    Measuring range 4 to 20 mA (scalable, reverse polarity protection)
    Measured variable 4 to 20 mA current signal optional indication of up to four measured values via HART®
    Max. input current 200 mA (short-circuit current)
    Voltage drop

    Standard device: ≤1 V

    Display lighting: ≤3.9 V independent of the measuring signal

    with HART®: ≤ 2V

    Maximum measured error ±0.1 %
    Influence of ambient temperature <0.01 %/K (0.0056 %/°F) of measuring range
    Transfer behavior HART® signals are not affected
    Operating conditions
    Ambient temperature –40 to +60 °C (–40 to +140 °F) (At temperatures below –25 °C (–13 °F) the readability of the display can no longer be guaranteed)
    Storage temperature –40 to +85 °C (–40 to +185 °F)
    Climate class IEC 60654-1, Class B2
    Electromagnetic compatibility Interference immunity: as per IEC61326 (Industrial Environments)/NAMUR NE 21 Interference emission: as per IEC61326, Class B
    Degree of protection

    Panel housing: IP65 at front, IP20 at rear

    Field housing: IP66, NEMA4x

    Mechanical construction

    Panel-mount housing:
    Front: aluminum
    Rear panel: polycarbonate PC

    Field housing:
    Aluminum, plastic
    2 × cable glands M16

    Electrical connection plug-in spring terminals, terminal range 0.14 to 1.5 mm solid/flexible 0.5 mm² flexible wire with ferrule
    Display and user interface
    Display 5-digit display (17 mm digits), display range: –19999 to +99999, bar graph, 14-segment display for unit/TAG
    Local operation 3 operating keys
    Power supply
    Supply voltage Powered directly from 4 to 20 mA current loop
    Ex approvals ATEX, IECEx, FM, CSA
    Marine approval GL
    EAC mark  

    Dimensions in mm (inches)

    Panel Housing

    Dimensions of an indicator RIA15 for panel mounting

    Installation according to instruction manual.

    Field Housing

    Dimensions of an indicator RIA15 in field housing

    Installation according to instruction manual.

    Electrical connection

    Electrical connection of loop-powered display RIA15

    a) Transmitter power supply

    b) 4 to 20 mA power source

    c) Connection without backlighting

    d) Connection with backlighting

    e) Connection with transmitter power supply and transmitter

    f) Connection with transmitter power supply and transmitter using the auxiliary terminal

    g) Connection without transmitter power supply directly in the 4 to 20 mA circuit

  • More documents for RIA15