TI00142R/09/EN/06.

16 Products Solutions Services

71343936

Technical Information
RIA46
Field meter

Digital field meter with control unit for monitoring and visualizing analog
measured values
Application • Min./max. value saved
• 1 or 2 calculated values
• Process recording and supervision
• One linearization table with 32 points for each calculated
• Process control
value
• Signal adjustment and signal conversion
• 1 or 2 analog outputs
• Optional Ex approval
• Digital status output (open collector)
• WHG compliant limit signal transmitter
• Operation using 3 keys
• Configuration via interface and FieldCare software
Your benefits • SIL2 approval (optional)
• 5-digit, 7-segment backlit LC display
• User-configurable dot matrix display range for bar graph,
units and tag name
• 1 or 2 universal inputs
• 2 relays (optional)
 RIA46

Function and system design

Application

Analog in 2

Analog in 1

A0010572

1 Example for "differential pressure" application

The RIA46 field meter powers the transmitter and processes analog signals from transmitters,
particularly from the area of process instrumentation. These signals are monitored, evaluated,
calculated, saved, separated, linked, converted and displayed. The signals, intermediate values and
the results of calculations and analysis are transmitted by digital or analog means.

Measuring system The RIA46 is a process transmitter, which is controlled by a microcontroller, and exhibits a display,
analog inputs for process and status signals, analog and digital outputs, as well as an interface for
configuration.
Connected sensors (e.g. temperature, pressure) can be powered by the integrated transmitter power
supply system. The signals to be measured are converted from analog to digital signals, processed
digitally in the device, and then converted from digital to analog signals and made available to the
various outputs. All measured values, and values calculated in any way, are available as a signal
source for the display, all outputs, relays and the interface. It is possible to make multiple use of the
signals and results (e.g. a signal source as an analog output signal and limit value for a relay).

Mathematics functions The following mathematics functions are available in RIA46:

• Sum
• Difference
• Multiplication
• Mean
• Linearization

Linearization function
Up to 32 user-definable points are available in the device per calculated value to linearize the input,
e.g. for tank linearization. In the case of the two-channel device (option), mathematics channel M2
can be used to linearize mathematics channel M1.
Linearization is also available in the FieldCare configuration software.

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Input
Measured variable Current, voltage, resistance, resistance thermometer, thermocouples

Measuring ranges Current:

• 0/4 to 20 mA +10% overrange
• Short-circuit current: max. 150 mA
• Load: 10 Ω
Voltage:
• 0 to 10 V, 2 to 10 V, 0 to 5 V, 0 to 1 V, 1 to 5 V, ±1 V, ±10 V, ±30 V, ±100 mV
• Max. permitted input voltage:
Voltage ≥ 1 V: ±35 V
Voltage < 1 V: ±12 V
• Input impedance: > 1 000 kΩ
Resistance:
30 to 3 000 Ω
Resistance thermometer:
• Pt100 as per IEC60751, GOST, JIS1604
• Pt500 and Pt1000 as per IEC60751
• Cu100, Cu50, Pt50, Pt46, Cu53 as per GOST
• Ni100, Ni1000 as per DIN 43760
Thermocouple types:
• Typ J, K, T, N, B, S, R as per IEC60584
• Typ U as per DIN 43710
• Typ L as per DIN 43710, GOST
• Typ C, D as per ASTM E998

Number of inputs One or two universal inputs

Update time 200 ms

Galvanic isolation Towards all other circuits

Output
Output signal One or two analog outputs, galvanically isolated

Current/voltage output
Current output:
• 0/4 to 20 mA
• Overrange up to 22 mA
Voltage:
• 0 to 10 V, 2 to 10 V, 0 to 5 V, 1 to 5 V
• Overrange: up to 11 V, short-circuit proof, Imax < 25 mA

HART®
HART® signals are not affected

Loop power supply • Open-circuit voltage: 24 VDC (+15% /-5%)

Ex version: > 14 V at 22 mA
Non-hazardous operation: > 16 V at 22 mA
• Maximum 30 mA short-circuit-proof and overload-proof
• Galvanically isolated from system and outputs

Switching output Open Collector for monitoring of the device state and alarm notification. The OC output is closed in
normal state. In error state, the OC output is opened.

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 RIA46

• Imax = 200 mA
• Umax = 28 V
• Uon/max = 2 V at 200 mA
Galvanic isolation towards all other circuits; test voltage 500 V

Relay output Relay output for limit function

Relay contact Changeover

Maximum contact burden DC 30 V / 3 A (permanent state, without destruction of the input)

Maximum contact burden AC 250 V / 3 A (permanent state, without destruction of the input)

Minimum contact load 500 mW (12 V/10 mA)

Galvanic isolation towards all other circuits Test voltage 1 500 VAC

Switching cycles > 1 million

Power supply
Terminal assignment

8
1

2
7

3
6

4
5

A0010685

2 Inside view and terminal assignment of the process display

1 Connection socket for interface cable
2 Connection supply voltage
3 Connection relay 1 (optional)
4 Connection relay 2 (optional)
5 Connection analog and status output
6 Connection analog input 1
7 Connection analog input 2 (optional)
8 HART® connection sockets
9 Laser labelling of terminal assignment

Supply voltage Wide-area power supply unit 24 to 230 V AC/DC (-20 % / +10 %) 50/60 Hz

Power consumption Max. 21.5 VA / 6.9 W

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Connection data interface Commubox FXA291 PC USB interface

• Connection: 4-pin connector
• Transmission protocol: FieldCare
• Transmission rate: 38,400 Baud

Interface cable TXU10-AC PC USB interface

• Connection: 4-pin connection
• Transmission protocol: FieldCare
• Delivery scope: Interface cable incl. FieldCare Device Setup DVD with all Comm DTMs and Device
DTMs

Performance characteristics
Reference operating Power supply: 230 VAC, 50/60 Hz
conditions
Ambient temperature: 25 °C (77 °F) ± 5 °C (9 °F)
Humidity: 20 %...60 % rel. humidity

Maximum measured error Universal input:

Accuracy Input: Range: Maximum measured error of

measuring range (oMR):

Current 0 to 20 mA, 0 to 5 mA, 4 to 20 mA; Overrange: up to ±0.05%

22 mA

Voltage ≥ 1 V 0 to 10 V, 2 to 10 V, 0 to 5 V, 1 to 5 V, 0 to 1 V, ±1 V, ±0.1%
±10 V, ±30 V

Voltage < 1 V ±100 mV ±0.05%

Resistance measurement 30 to 3 000 Ω 4-wire: ± (0.10% oMR + 0.8 Ω)

3-wire: ± (0.10% oMR + 1.6 Ω)
2-wire: ± (0.10% oMR + 3 Ω)

RTD Pt100, –200 to 850 °C (–328 to 1 562 °F) (IEC60751, 4-wire: ± (0.10% oMR + 0.3 K (0.54 °F))
α=0.00385) 3-wire: ± (0.10% oMR + 0.8 K (1.44 °F))
Pt100, –200 to 850 °C (–328 to 1 562 °F) (JIS1604, 2-wire: ± (0.10% oMR + 1.5 K (2.7 °F))
w=1.391)
Pt100, –200 to 649 °C (–328 to 1 200 °F) (GOST,
α=0.003916)
Pt500, –200 to 850 °C (–328 to 1 562 °F) (IEC60751,
α=0.00385)
Pt1000, –200 to 600 °C (–328 to 1 112 °F) (IEC60751,
α=0.00385)

Cu100, –200 to 200 °C (–328 to 392 °F) (GOST, 4-wire: ± (0.10% oMR + 0.3 K (0.54 °F))
w=1.428) 3-wire: ± (0.10% oMR + 0.8 K (1.44 °F))
Cu50, –200 to 200 °C (–328 to 392 °F) (GOST, w=1.428) 2-wire: ± (0.10% oMR + 1.5 K (2.7 °F))
Pt50, –200 to 1 100 °C (–328 to 2 012 °F) (GOST,
w=1.391)
Pt46, –200 to 850 °C (–328 to 1 562 °F) (GOST,
w=1.391)
Ni100, –60 to 250 °C (–76 to 482 °F) (DIN43760,
α=0.00617)
Ni1000, –60 to 250 °C (–76 to 482 °F) (DIN43760,
α=0.00617)

Cu53, –50 to 200 °C (–58 to 392 °F) (GOST, w=1.426) 4-wire: ± (0.10% oMR + 0.3 K (0.54 °F))
3-wire: ± (0.10% oMR + 0.8 K (1.44 °F))
2-wire: ± (0.10% oMR + 1.5 K (2.7 °F))

Thermocouples Typ J (Fe-CuNi), –210 to 1 200 °C (–346 to 2 192 °F) ± (0.10% oMR +0.5 K (0.9 °F))
(IEC60584) from –100 °C (–148 °F)

Typ K (NiCr-Ni), –200 to 1 372 °C (–328 to 2 502 °F) ± (0.10% oMR +0.5 K (0.9 °F))
(IEC60584) from –130 °C (–202 °F)

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Accuracy Input: Range: Maximum measured error of

measuring range (oMR):

Typ T (Cu-CuNi), –270 to 400 °C (–454 to 752 °F) ± (0.10% oMR +0.5 K (0.9 °F))
(IEC60584) from –200 °C (–328 °F)

Typ N (NiCrSi-NiSi), –270 to 1 300 °C (–454 to 2 372 °F) ± (0.10% oMR +0.5 K (0.9 °F))
(IEC60584) from –100 °C (–148 °F)

Typ L (Fe-CuNi), –200 to 900 °C (–328 to 1 652 °F) ± (0.10% oMR +0.5 K (0.9 °F))
(DIN43710, GOST) from –100 °C (–148 °F)

Typ D (W3Re/W25Re), 0 to 2 495 °C (32 to 4 523 °F) ± (0.15% oMR +1.5 K (2.7 °F))
(ASTME998) from 500 °C (932 °F)

Typ C (W5Re/W26Re), 0 to 2 320 °C (32 to 4 208 °F) ± (0.15% oMR +1.5 K (2.7 °F))
(ASTME998) from 500 °C (932 °F)

Typ B (Pt30Rh-Pt6Rh), 0 to 1 820 °C (32 to 3 308 °F) ± (0.15% oMR +1.5 K (2.7 °F))
(IEC60584) from 600 °C (1 112 °F)

Typ S (Pt10Rh-Pt), –50 to 1 768 °C (–58 to 3 214 °F) ± (0.15% oMR +3.5 K (6.3 °F))
(IEC60584) for –50 to 100 °C (–58 to 212 °F)
± (0.15% oMR +1.5 K (2.7 °F))
from 100 °C (212 °F)

Typ U (Cu-CuNi), –200 to 600 °C (–328 to 1 112 °F) (DIN ± (0.15% oMR +1.5 K (2.7 °F))
43710) from 100 °C (212 °F)

AD converter resolution 16 bit

Temperature drift Temperature drift: ≤ 0.01%/K (0.1%/18 °F) oMR

≤ 0.02%/ K (0.2%/18 °F) oMR for Cu100, Cu50, Cu53, Pt50 and Pt46

Analog output:

Current 0/4 to 20 mA, overrange up to 22 mA ±0.05% of measuring range

Max. load 500 Ω

Max. inductivity 10 mH

Max. capacity 10 µF

Max. ripple 10 mVpp at 500 Ω, frequency < 50 kHz

Voltage 0 to 10 V, 2 to 10 V ±0.05% of measuring range

0 to 5 V, 1 to 5 V ±0.1 % of measuring range
Overrange: up to 11 V, shortcircuit proof, Imax < 25 mA

Max. ripple 10 mVpp at 1 000 Ω, frequency < 50 kHz

Resolution 13 bit

Temperature drift ≤ 0.01%/K (0.1%/18 °F) of measuring range

Galvanic isolation Testing voltage of 500 V towards all other circuits

Installation
Mounting location Field, direct wall mounting and wall or pipe mounting 1) using the optional mounting plate.

Orientation No restrictions.
The orientation is determined by the readability of the display.
Max. viewing angle range +/- 45° from the central display axis in every direction.

1) According to UL approval panel or surface mounting only.

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Environment
Ambient temperature range NOTICE
The life-time of the display is shortened when operated in the upper temperature range.
‣ To avoid heat accumulation, always make sure the device is sufficiently cooled.
Non-Ex/Ex devices: –40 to 60 °C (–40 to 140 °F)
UL devices: –40 to 50 °C (–40 to 122 °F)
At temperatures below –30 °C (–22 °F) the readability of the display can no longer be
guaranteed.

Storage temperature –40 to 85 °C (–40 to 185 °F)

Operating height < 2 000 m (6 560 ft) above MSL

Climate class As per IEC 60654-1, Class B2

Degree of protection Front IP 67 / NEMA 4x (not evaluated by UL)

Shock and vibration 3g at 2...150 Hz as per IEC 60068-2-6

Electrical safety Protection class I, overvoltage category II, pollution degree 2 for aluminum housing
Protection class II, overvoltage category II, pollution degree 2 for plastic housing

Condensation Permitted

Electromagnetic CE compliance
compatibility (EMC)
Electromagnetic compatibility in accordance with all the relevant requirements of the IEC/EN 61326
series and NAMUR Recommendation EMC (NE21). For details refer to the EU Declaration of
Conformity.
Interference immunity as per IEC/EN 61326 series, industrial requirements.
Interference emission as per IEC/EN 61326 series, Class B equipment.

Mechanical construction
Design, dimensions
96 (3.78)
133 (5.24)

115 (4.53)
160 (6.30)

199 (7.83) 163 (6.42)

A0010574

3 Dimensions of the field meter in mm (in)

A Drill-hole for direct wall mounting or on optional mounting plate with 4 screws 5 mm (2 in)

Weight • Plastic housing: approx. 600 g (1.32 lb)

• Aluminum housing: approx. 1 700 g (3.75 lb)

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 RIA46

Material Housing Nameplate

Fiber-glass reinforced plastic PBT-GF30 Laser marking

Optional: Aluminum (AlSi12, AC-44100 or AlSi10Mg(Fe), AC-43400) Laser-writable foil, polyester

Terminals Spring terminals, 2.5 mm2 (14 AWG); auxiliary voltage with plug-in screw terminals
0.1 to 4 mm2 (30 to 12 AWG), torque 0.5 to 0.6 Nm (0.37 to 0.44 lbf ft).

Operability
Local operation
4
1 5
6

7
2
8

3 9

A0010575

4 Display of the field meter

1 Channel display: 1: analog input 1; 2: analog input 2; 1M: calculated value 1; 2M: calculated value 2
2 Dot matrix display for TAG, bar graph and unit
3 Limit value indicators in the bar graph
4 "Operation locked" indicator
5 Green LED; measuring device operational
6 Red LED; error/alarm
7 Yellow LED; status of relay 1
8 Yellow LED; status of relay 2
9 Minimum/maximum value indicator

• Display
5-digit, 7-segment backlit LC display
Dot matrix for text/bar graph
• Display range
-99999 to +99999 for measured values
• Signaling
– Setup security locking (lock)
– Measuring range overshoot/undershoot
– 2 x status relay (only if relay option was selected)

Operating elements
3 keys: -, +, E

Remote operation Configuration

The device can be configured with the PC software or on site using the operating keys. FieldCare
Device Setup is delivered together with the Commubox FXA291 or TXU10-AC (see ’Accessories’) or
can be downloaded free of charge from www.endress.com.

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Interface
4-pin socket for the connection with a PC via Commubox FXA291 or TXU10-AC interface cable (see
'Accessories')

Certificates and approvals

CE mark The measuring system meets the legal requirements of the applicable EC guidelines. These are listed
in the corresponding EC Declaration of Conformity together with the standards applied. Endress
+Hauser confirms successful testing of the device by affixing to it the CE mark.

EAC mark The product meets the legal requirements of the EEU guidelines. The manufacturer confirms the
successful testing of the product by affixing the EAC mark.

Ex approval 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 upon request.

Overfill prevention WHG-compliant limit signal transmitter (optional)

Functional safety SIL2 (optional)

UL UL recognized component (see www.ul.com/database, search by keyword "E225237")

Other standards and • IEC 60529:

guidelines Degrees of protection provided by enclosures (IP code)
• IEC 61010-1:
Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use
• EN 60079-11:
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "I" (optional)

Ordering information
Detailed ordering information is available from the following sources:
• In the Product Configurator on the Endress+Hauser website: www.endress.com -> Click "Corporate"
-> Select your country -> Click "Products" -> Select the product using the filters and search field ->
Open product page -> The "Configure" button to the right of the product image opens the Product
Configurator.
• From your Endress+Hauser Sales Center: www.addresses.endress.com
Product Configurator - the tool for individual product configuration
• Up-to-the-minute configuration data
• Depending on the device: Direct input of measuring point-specific information such as
measuring range or operating language
• Automatic verification of exclusion criteria
• Automatic creation of the order code and its breakdown in PDF or Excel output format
• Ability to order directly in the Endress+Hauser Online Shop

Accessories
Various accessories, which can be ordered with the device or subsequently from Endress+Hauser, are
available for the device. Detailed information on the order code in question is available from your
local Endress+Hauser sales center or on the product page of the Endress+Hauser website:
www.endress.com.

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 RIA46

Device-specific accessories Cable glands and adapters

Adapter set NPT

1x M20x1.5 (outer) - NPT1/2" (inner) RIA46X-GI

4x M16x1.5 (outer) - NPT1/2" (inner)

Cable gland set plastic

4x M16x1.5 + 1x M20x1.5 RIA46X-GH

Housing

Weather protection cover

Ordering:
• as an additional option in the product structure for RIA46
• separately via order code: RK01-AR

163.9 (6.45) 274 (10.79)

14
0°
95

180 (7.09)
°

30
(1.18)

272 (10.71)

A0021548

5 Dimensions in mm (in)

Mounting kit for wall/pipe mounting

Ordering:
• as an additional option in the product structure for RIA46
• separately via order code: RK01-AH

Pipe mounting set

Install. kit stainl. steel housing W08 71091611

Communication-specific Designation
accessories
Interface cable

Commubox TXU10 incl. FieldCare Device Setup and DTM Library

Commubox FXA291 incl. FieldCare Device Setup and DTM Library

Supplementary documentation
• System components and data manager - solutions to complete your measuring point:
FA00016K/09
• Operating Instructions for process display unit RIA46: BA00274R/09
• Ex-related additional documentation:
ATEX II(1) GD [Ex ia] IIC: XA00079R/09
• SIL Safety Manual:
SD00023R/09

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