Technical Information

RIA141
Digital field loop powered display unit
with explosion proof enclosure

Application

Your benefits• Oil & gas• Petrochemical industry• System and apparatus engineering• Outdoor applications• Laboratory facilities• Process data acquisition and monitoring• Optional: stainless steel housing for EEx d application• Loop-powered display unit in single compartment
housing• 5-digit LC display, character height 20.5 mm (0.8")• Illuminated display, rotatable• Trend bargraph in increments of 10%• Background illumination without additional
power supply• Measuring range display from -19999 to 99999• Digital limit switch• Freely programmable units• 3-key operation• Approvals: ATEX, FM, CSA and NEPSI• 3 cable entries• Configuration with ReadWin® 2000 PC software• Configuration without power supply using setup box

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Function and system design
Measuring principle

Example of an application of the field display unit

The display unit records an analog measuring signal and shows this on the display with backgroundillumination. The LC display shows the current measured value digitally and as a bargraph with limit value
violation signalling. The display unit is looped into the 4 to 20 mA circuit and obtains the required energy fromthere.
Measuring system

Microcontroller controlled display unit in single chamber field housing with illuminated LC display. The
measuring range, decimal point and offset of the display can be configured comfortably by means of three keys
in the device with the housing open or by means of a PC with the ReadWin® 2000 PC software. The
background illumination of the display is always activated and does not require additional wiring for the power
supply.

Input
Measured variable

Current

Measuring range

4 to 20 mA (reverse polarity protection)

Input• Line voltage drop < 4 V at 3 - 22 mA• Max. line voltage drop < 6 V at max. short-circuit current 200 mA

OutputOutputDigital limit switch
Passive, open collector:
Imax = 200 mA
Umax= 35 V
Ulow/max = < 2 V at 200 mA
Max. reaction time to limit value = 250 ms

Signal on alarm

No measured value visible on the LC display, no background illumination.

Transmission behavior

The display unit allows the HART® transmission protocol to pass unimpeded.

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Power supply
Electrical connection

Terminal assignment of field display unit

Terminal

Terminal assignment

Input and output+Measuring signal (+) 4 to 20 mA

Signal input-Measuring signal (-) 4 to 20 mA

Signal input

1

Terminal for further instrumentation

Support terminal

2

Digital limit switch (collector)

Switch output

3

Digital limit switch (emitter)

Switch output

Supply voltage

Supply by means of the 4 to 20 mA current loop.

Cable entry

The following cable entries are available:• 3x thread NPT1 + 1x blind plug
• 3x thread M20 + 1x blind plug
• 2x gland M20 + 1 x blind plug
• 3x thread G1/2 + 1 x blind plug

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Performance characteristics
Reference operating
conditions

T= 25 °C (77 °F)

Maximum measured error< 0.1% of scaled display range

Influence of ambient
temperature (temperaturedrift)

Effect on the accuracy when ambient temperature changes by 1 K (1.8 °F): 0.01%

Installation
Installation instructions

Mounting location
Wall or pipe mounting (see 'Accessories')
Orientation
No restrictions

Environment
Ambient temperature limits!

-40 to +80 °C (-40 to +176 °F)
Note!
The display can react slowly for temperatures < -20 °C (< -4 °F).
Readability of the display cannot be guaranteed at temperatures < -30 °C (-22 °F).

Storage temperature-40 to +85 °C (-40 to +185 °F)

Electrical safety

As per IEC 61010-1,
UL61010-1,
CSA C22.2 No. 1010.1-92

Climate class

As per IEC 60 654-1, Class C

Degree of protection

IP 67, NEMA 4X

Shock and vibration resistance

3g / 2 to 150 Hz as per IEC 60 068-2-6

CondensationPermitted

Installation category

1 to IEC 61010

Pollution degree

2 to IEC 61010

Electromagnetic compatibility(EMC)• EN 61326 (IEC 61326):
Electromagnetic compatibility (EMC requirements)• NAMUR (NE21):
Association for Standards for Control and Regulation in the Chemical Industry

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Mechanical construction
Design, dimensions

Die cast aluminum housing for general purpose or as option stainless steel housing

Data in mm (data in inches in brackets)• Electronics compartment and connection compartment together in the single chamber housing• Display can be rotated in 90°-stages
WeightMaterial• Approx. 1.6 kg (3.53 lb) (aluminium housing)• Approx. 4.2 kg (9.26 lb) (stainless steel housing)
Housing

NameplateDie-cast aluminum housing AlSi10Mg with powder coating Aluminum AlMgl, anodized in blackon polyester basis
Stainless steel 1.4435 (AISI 316L)

Terminals

1.4301 (AISI 304)

Cables / wires up to max. 2.5 mm2 (AWG 13) plus ferrule

Human interface
Display elements

LC display of the field display unit (illuminated, pluggable in 90° stages)
Item 1: bargraph display in increments of 10% with indicators for measuring range undershoot (item 1a)/overshoot (item1b)
Item 2: warning sign in the case of limit value violation
Item 3: unit indicator K, °F, °C or %Item 4: measured value display (character height 20.5 mm/0.8")
Item 5: status and information indicator / configuration
Item 6: 'programming disabled' indicatorEndress+Hauser

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RIA141• Display range-19999 to +99999• Offset-19999 to +99999• Signalling
Measuring range overshoot/undershoot• Limit value violation
Lower/upper limit value exceeded
Operating elements

3-key operation (-/+/E) integrated in device, access with housing open

Remote operation

Configuration
The device is configured with the ReadWin® 2000 PC operating software.
Interface
Configuration interface at device; connection to PC via configuration kit (see "Accessories").
Configurable device parameters (selection)
Measuring dimension, measuring ranges (linear/square), setup block using user code, failsafe mode, digital
filter (damping), offset, limit value (min/max/alarm), alarm limit values freely adjustable.

Configuration with ReadWin® 2000 PC operating software.

Certificates and approvals
CE markThe device complies with the legal requirements of the EC directives. Endress+Hauser confirms that the device
has been successfully tested by affixing to it the CE mark.

Hazardous area approvals

Information about currently available Ex versions (ATEX, FM, CSA, etc.) can be supplied by your E+H Sales
Center on request. All explosion protection data are given in a separate documentation which is available uponrequest.

Other standards andguidelines• IEC 60529:
Degree of protection provided by housing (IP-Code)• IEC 61010-1:
Safety requirements for electrical measurement, control and laboratory use.
• IEC 61326-1:
Electromagnetic compatibility (EMC requirements)• NAMUR
Standards working group for measurement and control technology in the chemical industry.
(www.namur.de)

UL

Recognized component to UL 3111-1

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CSA GPCSA General Purpose

Ordering information
Product structure

RIA141

1 channel, scalable, for 4-20mA, loop powered, display LC 5 digits, 20.5 mm high, bargraph resolution 10 %,over/underrange, engineering units, 3 key operation, digital limit switch, UL recognized, CSA-GPApproval
ABCDEFGHI

Version for non-hazardous areas
ATEX
II2G EEx d IIC T6FM
XP, NI, DIP Cl. I, II, III/1+2 Gr. ABCDEFG
CSAXP, NI, DIP I, II, III/1+2/ Gr. ABCDEFG
ATEX
II3G EEx nA IIC T4/T5/T6
ATEX
II2D
NEPSI
Ex d IIC T4-T6
NEPSI
Ex nAL IIC T4-T6
ATEX
II2 (1)G Ex ia IIC T6Housing
12Field, alu die castField, 316L

Cable entryABCD

3x thread NPT ½ + 1x blind plug
3x thread M20 + 1x blind plug
2x gland M20 + 1x blind plug3x thread G½ + 1x blind plug

Mounting bracket
12

without
Pipe 2", 316L

Additional option
12

Basic version
Works calibration certificate, 5-point

VersionA
RIA141-Standard⇐ order code

Accessories

Endress+Hauser

Order code

Accessory

51007995

Mounting bracket

51004949

1 x cable entry M20x1.5

51006845

1 x cable gland NPT ½"

51004489

1 x blank (blind) M20x1.5

51004490

1 x blank (blind) NPT ½"

51004916

1 x blank (blind) JIS G½"

51003528

TAG imprint 2x16 characters

TXU10-• Configuration kit for PC programming(Interface cable for PC with USB port + ReadWin® 2000 PC software)• ReadWin® 2000 can be downloaded free of charge from the Internet at the following
address:www.endress.com/readwin

7Documentation• 'System components' field of activities brochure (FA016K/09/en)• Operating Instructions for 'RIA141 field display unit' (BA177R/09/a3)• Supplementary Ex documentation:
ATEX II2G EEx d: XA045R/09/a3
ATEX II1/2D: XA046R/09/a3
ATEX II3G: XA047R/09/a3
ATEX II2 (1)G Ex ia: XA075R/a3• FM Control Drawing: 021500113• CSA Control Drawing: 021500114

Instruments International
Endress+Hauser
Instruments International AG
Kaegenstrasse 24153 Reinach
Switzerland
Tel. +41 61 715 81 00
Fax +41 61 715 25 00
www.endress.com
info@ii.endress.com

TI106R/09/en/11.08
51008480
FM+SGML6.0 ProMoDo