Endress+Hauser RIA 261 Handbuch

TI083R/09/en

51002768

Technical information

Field display

RIA 261

Digital loop-powered field display

for 4 to 20 mA current loops

Features and benefits

• Loop-powered display, no additional power supply

cable required

• 5 digit LC display, 26 mm height

• Trend bargraph in 10% steps

• Rear illumination without additional power supply

• Measurement range displayed from -19999 to 99999

• Flexible measurement range set up using three push

buttons

•Certification

- ATEX

- FM

- CSA

• GL Germanischer Lloyd Marine approval

• Two cable entries for wiring the measurement circuit

• Space for installing additional measurement electron-

ics, e.g. temperature head transmitters

• Housing can be lead sealed

• Protection class IP66/NEMA 4X

•GORE-TEX

®membrane for pressure compensation

Application

• Plant and machine construction

• Field mounted applications

• Laboratory fittings

• Process display, monitoring

• Suitable for Ex application

021

RIA261

2Endress+Hauser

Function and system design

Measuring principle

Example for field display application area

The display measures an analogue measurement signal and indicates this on the display. The display is con-

nected in a 4 to 20 mA current loop and also derives its supply from the loop. The volt drop is almost negligible

(< 2.5 V). The dynamic internal resistance (load) makes sure that independently from the loop current, the

maximum volt drop is never exceeded. The analogue signal at the input is digitised, analysed and shown in the

rear illuminated display.

Equipment architecture Micro-controller controlled field mounted display with illuminated LC display. Setting up measurement range,

decimal point and offset of the display is easily done on an open unit using the three operational push buttons

fitted. Setting up during operation is possible. The rear illuminated display is always active and needs no further

wiring for its energy requirement.

Input

Measured variable Current

Measuring range 4 to 20 mA (polarity protected)

Electrical specifications • Volt drop (load)

< 2.5 V

• Max. input current (short circuit current)

200 mA

G09-RIA261ZZ-15-00-xx-en-001.eps

RIA261

Endress+Hauser 3

Output

Output signal The analogue input signal (4 to 20 mA) is not converted. The input signal is digitised, analysed and shown in

the LC display.

Signal on alarm No measured value seen in the LC display, no rear illumination.

Transmission behaviour The display allows transmission of the HART®transmission protocol.

Auxiliary energy

Electrical connection

Field mounted display terminal layout

Supply voltage The power supply is done using the 4 to 20 mA current loop power.

Volt drop:

< 2.5 V

Cable entry 2 x M20 cable entries

Alternative:

2 x ½" NPT cable entries

Terminal In- and outputs

1Measurement signal (+) 4 to 20 mA Signal input

2Connection terminal for further instrumentation Terminal

3Measurement signal (-) 4 to 20 mA Signal input

4Connection terminal for further instrumentation Terminal

G09-RIA261ZZ-04-00-xx-en-001.eps

active

passive

RIA261

4Endress+Hauser

Performance characteristics

Reference conditions T = 25 °C

Maximum measured error < 0.1% of scaled analogue range

Non-repeatability Not specified

Influence of ambient

temperature

Temperature drift = 0.01%/K ambient temperature

Operating conditions

Installation instructions • Installation area: Wall or pipe mounting (see Accessories)

• Installation angle: No limitations

Environment

Ambient temperature range −20 to +60 °C (for Ex areas, see Ex certificate)

Ambient temperature limits See ambient temperature range

Storage temperature -25 to +70 °C

Climate class To IEC 60654-1, Class D1

Degree of protection IP66, NEMA 4X

Shock resistance 7 Nm housing, 4 Nm glass to IEC 60079-0

Vibration resistance Not specified

Electromagnetic compatibility RF protection

To EN 55011 Group 1, Class B

Interference safety

• ESD to IEC 61000-4-2, 6 kV/ 8 kV

• Electromagnetic fields to IEC 61000-4-3, 10 V/m

• Burst (power supply) to IEC 61000-4-4, 4 kV

• Surge to IEC 61000-4-5, 1 kV

• Cable high frequency to IEC 61000-4-6, 10 V

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Endress+Hauser 5

Mechanical construction

Design, dimensions

Unit dimensions in mm

Dimensions for wall mounting holes (lower picture) in mm

• There is room available behind the hinged electronics for additional electronics e.g. temperature head trans-

mitter. Take note of manufacturers installation instructions!

Internal dimensions: H = 60 mm, W = 140 mm, D = 30 mm

• Housing can be lead sealed

•GORE-TEX

®membrane used as pressure compensation fitted to the left of the cable entries

Weight Approx. 800 g

Material Housing

Die cast aluminium epoxy coated with glass insert

Wall/stand pipe mounting kit and tensioning tape

1.4301 stainless steel

Terminals • Plug in screw terminals inside the housing in order enable loop current connection:

Plug on screw terminals, terminal size 1.5 mm² solid core, 1.0 mm² stranded with ferrule

• Earth (ground) connection on housing exterior: Terminal range 2.5 mm²

G09-RIA261ZZ-06-00-08-xx-002.eps

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Human interface

Display elements •Display

5 digit LC display, 26 mm character height, rear illuminated

Bargraph display in 10% steps, markers for over/under range display

• Display range

-19999 to +99999

• Offset

-19999 to +32767

• Operation

Three push button operation (-/+/E) integrated in the unit, access when unit is opened

• Signals

Measurement range over/under value

• Rear illumination

Illumination brightness increases with an increase in loop current

Certificates and approvals

4The measurement system fulfils the legal requirements laid out within the EU regulations 89/336/EWG.

Endress+Hauser acknowledges successful testing of the unit by adding the CE mark.

Ex approval Details regarding the availability of the Ex versions (ATEX, FM, CSA, etc.) can be obtained from your local E+H

sales organisation. All relevant data for Ex protection can be found in separate Ex documentation, which can

be requested separately.

Ordering information

Product structure

Process Display RIA261, Field

Electronic indicator.

Loop powered.

1 channel, presettable scale.

Display LC, 5 digit, char. height 26mm.

Bargraph -10...110%.

Approval: GL (German Lloyd) Marine.

Rear-illuminated display.

Approval:

A Non-hazardous area

B ATEX II2(1)G EEx ia IIC T6

C FM IS, NI Cl.I / 1,2 Gr.ABCD T6

D CSA Cl.I, Div 1,2 Gr. ABCD T6

E ATEX II3G EEx nA IIC T6

Housing; Cable entry:

1 Alu IP66 NEMA4x; gland M20

2 Alu IP66 NEMA4x; thread NPT 1/2

Additional option:

1 Basic version

2 Mounting bracket, wall / pipe

3 Works calib. certif.

4 Mounting bracket, wall / pipe + WCC=Works calib. certif.

RIA261- ⇐Order code

RIA261

Endress+Hauser 7

Accessories

Wall and stand pipe mounting kit, pos. B (with tension tape installation, pos. A)

Order number 51003502

Further documentation

• Operating manual process display RIA 261 (BA111R/09/)

• Ex additional documentation: ATEX (XA007R/09/a3) FM, CSA, etc.

• Brochure "System Components" (FA016K/09/en)

G09-RIA261ZZ-11-00-08-xx-001.eps

Subject to modification

International Head Quarter

Endress+Hauser

GmbH+Co. KG

Instruments International

Colmarer Str. 6

79576 Weil am Rhein

Germany

Tel. +49 76 21 9 75 02

Fax +49 76 21 9 75 34 5

www.endress.com

[email protected]dress.com

TI083R/09/en/05.05

51002768

FM+SGML 6.0

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