RIA452-A121A11A

TI00113R/09/EN/14.19 71468732 2019-12-30 

Solutions 

Products 

Services 

## Technical Information RIA452 

Process indicator 

Digital process indicator in panel mounted housing for monitoring and displaying analog measured values with pump control and batch functions and flow calculation 

## Application 

- Water/wastewater sector 

- Power industry 

- Raw materials 

- Chemicals industry 

- Food industry 

## Your benefits 

- 7-digit 14-segment LC display 

- Multicolored 

- Large bar graph with overrange and underrange 

- Intrinsically safe input with transmitter power supply 

- Digital status inputs for pump monitoring 

- Universal input 

- Up to eight relays 

- Min/Max value saved 

- Pump control functions 

- Batch functions 

- Flow measurement for open channels and weirs 

- Linearization table with 32 support points 

- Analog output 

- Pulse output with totalizer 

- Jog-shuttle operation 

- Freely programmable units 

- Configuration via interface and operating software 

- Tank linearization via PC software 

RIA452 

## Function and system design 

Measuring principle 

**==> picture [104 x 123] intentionally omitted <==**

**==> picture [386 x 19] intentionally omitted <==**

**----- Start of picture text -----**<br>
  A0028466<br> 1 Example of an application of the process indicator<br>**----- End of picture text -----**<br>


The single-channel RIA452 process indicator monitors and displays analog measured values. Pumps can be monitored with the digital status inputs. The measured value is displayed using the sevendigit, 14-segment LC display. Numbers and units are displayed in white, the bar graph in yellow, overrange and underrange in red, and the limit value flags and digital status inputs in green and yellow. The RIA452 can provide power directly to two-wire transmitters that are connected. As an option, it is also possible to select the input and the transmitter power supply as intrinsically safe for Ex applications. Up to eight freely programmable relays monitor the measured value for limit value overshoot and undershoot. Other operating modes for the relays include sensor or device malfunction, batch and pump control functions (e.g. alternating pump control). Furthermore, the RIA452 can be used as a preset counter and for measuring flow at open channels and measuring weirs. 

The scalable analog output offers many different ways of forwarding the input signal: zoom function, linearization, offset, inversion and signal conversion (input/output conversion). The optional pulse output allows users to output integrated process values. 

Measuring system 

Microcontroller-controlled indicator in a panel-mounted housing with a multicolored, illuminated LC display. Analog measured value acquisition is via an analog/digital converter. The digital status inputs are scanned cyclically. Power can be supplied directly to two-wire sensors with the transmitter power supply which is integrated as standard. The current input is optionally available as an intrinsically safe version for Ex applications. In this case, the RIA452 has a second, intrinsically safe transmitter power supply. 

The freely scalable analog output is output via digital/analog conversion. The digital pulse output is output directly. 

Up to eight relays are available in the device for monitoring limit values, pump control and batch functions. 

Endress+Hauser 

2 

RIA452 

The device can be operated either onsite via the jog/shuttle dial, or via the PC with an operating software. Operation can be locked using the hardware key or software code. 

- Linearization The following flow curves are programmed into the device for open channels and weirs: • Khafagi-Venturi flume 

   - ISO Venturi flume 

   - • BST[ 1)] Venturi flume • Parshall flume • Palmer-Bowlus flume • Rectangular weir • Rectangular weir with constriction • NFX[ 2)] rectangular weir • NFX[ 2)] rectangular weir with constriction • Trapezoidal weir • Triangular weir • BST[ 1)] triangular weir • NFX[ 2)] triangular weir User-configurable flow formula _Q = C * (h[α] + γ*h[β] )_ 

The parameters α, β, γ and C can be entered freely. 

## Linearization function 

Up to 32 user-definable linearization points are available in the device for the linearization of the input, e.g. for tank linearization. 

The linearization table for standard tanks and customer-specific tanks can be generated with the ReadWin 2000 operating software. 

## Input 

||Input|
|---|---|
|Measured variable|• Current (standard)|
||• Digital inputs (standard)|
||• Current/voltage, resistance, RTD assembly, thermocouples (universal input option)|
|Measuring range|Current input:|
||Current:|
||• 0/4 to 20 mA +10% overrange, 0 to 5 mA|
||• Short-circuit current: max. 150 mA|
||• Input impedance: ≤ 5 Ω|
||• Response time: ≤ 100 ms|
||Universal input:|
||Current:|
||• 0/4 to 20 mA + 10% overrange, 0 to 5 mA|
||• Short-circuit current: max. 100 mA|
||• Input impedance: ≤ 50 Ω|
||Voltage:|
||• ±150 mV, ±1 V, ±10 V, ±30 V, 0 to 100 mV, 0 to 200 mV, 0 to 1 V, 0 to 10 V|
||• Input impedance: ≥ 100 kΩ|
||Resistance:|
||30 to 3 000 Ω in 3/4-wire technology|
||RTD assembly:|
||• Pt100/500/1000, Cu50/100, Pt50 in 3/4-wire technology|
||• Measuring current for Pt100/500/1000 = 0.25 mA|



1) BST: British Standard 2) NFX: French standard NFX 10-311 

Endress+Hauser 

3 

RIA452 

Thermocouple types: • J, K, T, N, B, S, R as per IEC584 • D, C as per ASTME998 • U, L as per DIN43710/GOST • Response time: ≤ 100 ms 

## Digital input: 

Digital input: • Voltage level –3 to 5 V low, 12 to 30 V high (as per DIN19240) • Input voltage max. 34.5 V • Input current typ. 3 mA with overload and reverse polarity protection • Sampling frequency max. 10 Hz Galvanic isolation Towards all other circuits 

## Output 

||Output|
|---|---|
|Output signal|• Relay, transmitter power supply (standard)|
||• Current, voltage, pulse, intrinsically safe transmitter power supply (option)|
|Signal on alarm|No measured value visible on the LC display, no background illumination, no sensor power supply, no|
||output signals, relays behave in safety-oriented manner.|
|Current/voltage output|Analog output range:|
||0/4 to 20 mA (active), 0 to 10 V (active)|
||Load:|
||• ≤ 600 Ω (current output)|
||• Max. output current 22 mA (voltage output)|
||Signal characteristics:|
||Freely scalable signal|
||Galvanic isolation towards all other circuits|
|Pulse output (open collector)|Pulse output (open collector):|
||• Frequency range to 2 kHz|
||• Imax= 200 mA|
||• Umax= 28 V|
||• Ulow/max= 2 V at 200 mA|
||• Pulse width = 0.04 to 2 000 ms|
|Relay output|Signal characteristics:|
||Binary, switches when the limit value is reached|
||Switch function: limit relay switches for the operating modes:|
||• Minimum/maximum safety|
||• Alternating pump control function|
||• Batch function|
||• Time control|
||• Window function|
||• Gradient|
||• Device malfunction|
||• Sensor malfunction|
||Switching threshold:|
||Freely programmable|
||Hysteresis:|
||0 to 99%|
||Signal source:|
||• Analog input signal|
||• Integrated value|
||• Digital input|



Endress+Hauser 

4 

RIA452 

Number: 

4 in basic unit (can be extended to 8 relays, option) 

Electrical specifications: 

- Relay type: changeover 

- Relay switching capacity: 250 VAC / 30 VDC, 3 A 

- Switch cycles: typically 10[5] 

- Switching frequency: max. 5 Hz 

- Minimum switching load: 10 mA / 5 VDC 

Galvanic isolation towards all other circuits 

Mixed assignment of low and extra-low voltage circuits is not permitted for neighboring relays. 

Transmitter power supply 

Transmitter power supply 1, terminal 81/82 (optionally intrinsically safe): 

Electrical specifications: 

- Output voltage: 24 V ±15% 

- Output current: max. 22 mA (for Uout ≥ 16 V, sustained short-circuit proof) 

• Impedance: ≤ 345 Ω 

Transmitter power supply 2, terminal 91/92: 

Electrical specifications: 

- Output voltage: 24 V ±15% 

- Output current: max. 250 mA (sustained short-circuit proof) 

Transmitter power supply 1 and 2: 

Galvanic isolation: Towards all other circuits 

HART® 

HART® signals are not affected 

Endress+Hauser 

5 

RIA452 

## Power supply 

Terminal assignment 

**==> picture [387 x 510] intentionally omitted <==**

**----- Start of picture text -----**<br>
1 J1<br>81 nc J2<br>82<br>154 54<br>11<br>R8 R4<br>12 155 55<br>156 56<br>144 44<br>2 R7 145 45 R3<br>3 146 46<br>151 51<br>20..36V DC R6 152 52 R2<br>153 53<br>20...28V AC<br>50/60Hz 141 41<br>90...250V AC R5 142 42 R1<br>50/60Hz<br>4 143 43<br>RS232<br>5 D1<br>6 D2<br>7 D3<br>D4<br>8<br>  A0028439<br> 2 Terminal assignment of process indicator<br>1 Current input (12 and 82 jumpered internally) 7 Transmitter power supply and analog output<br>2 - passive sensor 8 Open collector output<br>3 - active sensor D1 to D4 Digital inputs<br>4 Power supply R1 to R4 Relay outputs<br>5 Interface for PC operating software R5 to R8 Relay outputs (optional)<br>6 RS232 interface J1 Hardware write protection<br>-<br>+ +<br>L/L+ N/L- NC<br>91 92 31 32 33 34 96 97 197 297 397<br>+ +<br>+<br>+<br>+<br>+<br>-<br>- -<br>- -<br>-<br>-<br>**----- End of picture text -----**<br>


Endress+Hauser 

6 

RIA452 

## Universal input option 

**==> picture [177 x 286] intentionally omitted <==**

**----- Start of picture text -----**<br>
19<br>17<br>15<br>13<br>11<br>12<br>1<br>+<br>2<br>+<br>3<br>+<br>4<br>+<br>5<br>6<br>-<br>-<br>-<br>-<br>**----- End of picture text -----**<br>


**==> picture [22 x 4] intentionally omitted <==**

**----- Start of picture text -----**<br>
  A0028457<br>**----- End of picture text -----**<br>


**==> picture [286 x 67] intentionally omitted <==**

**----- Start of picture text -----**<br>
 3 Universal input terminal assignment<br>1 Current input 0/4 to 20 mA 4 Thermocouples<br>2 Voltage input ±1 V 5 RTD assembly, 4-wire<br>3 Voltage input ±30 V 6 RTD assembly, 3-wire<br>**----- End of picture text -----**<br>


**==> picture [104 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
Interface connection data<br>**----- End of picture text -----**<br>


RS232 

- Connection: jack socket 3.5 mm, rear of device 

- Transmission protocol: ReadWin 2000 

- Transmission rate: 38 400 Baud 

Supply voltage 

- Low voltage power unit 90 to 250 VAC50/60 Hz 

- Extra-low voltage power unit 20 to 36 VDC or 20 to 28 VAC 50/60 Hz The device must be powered only by a power unit that operates using a limited energy circuit in accordance with UL/EN/IEC 61010-1, Section 9.4 and the requirements in Table 18. 

Power consumption 

Power consumption max. 24 VA 

## Performance characteristics 

Reference operating conditions 

Power supply: 230 VAC ±10%, 50 Hz ±0.5 Hz Warm-up period: 90 min Ambient temperature: 25 °C (77 °F) 

Endress+Hauser 

7 

RIA452 

## Maximum measured error 

|Current input|Current input|
|---|---|
|Accuracy|0.1% of full scale|
|Resolution|13 bit|
|Temperature drift|≤ 0.4%/10 K (18 °F)|



## Universal input 

||Input:|Range:|Maximum measured error of measuring range<br>(oMR):|
|---|---|---|---|
|Accuracy|Current|0 to 20 mA, 0 to 5 mA, 4 to 20 mA; overrange: to<br>22 mA|±0.10%|
||Voltage > 1 V|0 to 10 V, ±10 V, ±30 V|±0.10%|
||Voltage ≤ 1 V|±1 V, 0 to 1 V, 0 to 200 mV, 0 to 100 mV,<br>±150 mV|±0.10%|
||Resistance thermometer|Pt100, –200 to 600 °C (–328 to 1 112 °F) (IEC751,<br>JIS1604, GOST)<br>Pt500, –200 to 600 °C (–328 to 1 112 °F) (IEC751,<br>JIS1604)<br>Pt1000, –200 to 600 °C (–328 to 1 112 °F)<br>(IEC751, JIS1604)|4-wire: ± (0.10% oMR + 0.3 K (0.54 °F)<br>3-wire: ± (0.15% oMR + 0.8 K (1.44 °F))|
|||Cu100, –200 to 200 °C (–328 to 392 °F) (GOST)<br>Cu50, –200 to 200 °C (–328 to 392 °F) (GOST)<br>Pt50, –200 to 600 °C (–328 to 1 112 °F) (GOST)|4-wire: ± (0.20% oMR + 0.3 K (0.54 °F)<br>3-wire: ± (0.20% oMR + 0.8 K (1.44 °F))|
||Resistance measurement|30 to 3 000 Ω|4-wire: ± (0.20% oMR + 0.3 K (0.54 °F)<br>3-wire: ± (0.20% oMR + 0.8 K (1.44 °F))|
||Thermocouples|Typ J (Fe-CuNi),<br>–210 to 999.9 °C (–346 to 1 382 °F) (IEC584)|± (0.15% oMR + 0.5 K (0.9 °F)) from<br>–100 °C (–148 °F)|
|||Typ K (NiCr-Ni),<br>–200 to 1 372 °C (–328 to 2 502 °F) (IEC584)|± (0.15% oMR + 0.5 K (0.9 °F)) from<br>–130 °C (–234 °F)|
|||Typ T (Cu-CuNi), –270 to 400 °C (–454 to 752 °F)<br>(IEC584)|± (0.15% oMR + 0.5 K (0.9 °F)) from<br>–200 °C (–328 °F)|
|||Typ N (NiCrSi-NiSi),<br>–270 to 1 300 °C (–454 to 2 372 °F) (IEC584)|± (0.15% oMR + 0.5 K (0.9 °F)) from<br>–100 °C (–148 °F)|
|||Typ B (Pt30Rh-Pt6Rh),<br>0 to 1 820 °C (32 to 3 308 °F) (IEC584)|± (0.15% oMR + 1.5 K (2.7 °F)) from<br>600 °C (1 112 °F)|
|||Typ D (W3Re/W25Re),<br>0 to 2 315 °C (32 to 4 199 °F) (ASTME998)|± (0.15% oMR + 1.5 K (2.7 °F)) from<br>500 °C (932 °F)|
|||Typ C (W5Re/W26Re),<br>0 to 2 315 °C (32 to 4 199 °F) (ASTME998)|± (0.15% oMR + 1.5 K (2.7 °F)) from<br>500 °C (932 °F)|
|||Typ L (Fe-CuNi),<br>–200 to 900 °C (–328 to 1 652 °F) (DIN43710,<br>GOST)|± (0.15% oMR + 0.5 K (0.9 °F)) from<br>–100 °C (–148 °F)|
|||Typ U (Cu-CuNi),<br>–200 to 600 °C (–328 to 1 112 °F) (DIN43710)|± (0.15% oMR + 0.5 K (0.9 °F)) from<br>–100 °C (–148 °F)|
|||Typ S (Pt10Rh-Pt), 0 to 1 768 °C (32 to 3 214 °F)<br>(IEC584)|± (0.15% oMR + 3.5 K (6.3 °F)) for<br>0 to 100 °C (32 to 212 °F)<br>± (0.15% oMR + 1.5 K (2.7 °F)) for<br>100 to 1 768 °C (212 to 3 214 °F)|
|||Typ R (Pt13Rh-Pt),<br>–50 to 1 768 °C (–58 to 3 214 °F) (IEC584)|± (0.15% oMR + 1.5 K (2.7 °F)) for<br>100 to 1 768 °C (212 to 3 214 °F)|
|Resolution||16 bit||
|Temperature drift||Temperature drift: ≤ 0.1%/10 K (18 °F)||



Endress+Hauser 

8 

RIA452 

|Current output|Current output|
|---|---|
|Linearity|0.1% of full scale|
|Resolution|13 bit|
|Temperature drift|Temperature drift: ≤ 0.1%/10 K (18 °F)|
|Output Ripple|10 mV at 500 Ω for frequencies ≤ 50 kHz|



Voltage output 

|Linearity|0.1% of full scale|
|---|---|
|Resolution|13 bit|
|Temperature drift|Temperature drift: ≤ 0.1%/10 K (18 °F)|



## Installation 

||Installation|
|---|---|
|Mounting location|Panel, cut-out 92 x 92 mm (3.62x3.62 in) (see 'Mechanical construction').|
|Orientation|Horizontal +/- 45° in every direction|
||Environment|
|Ambient temperature range|–20 to 60 °C (–4 to 140 °F)|
|Storage temperature|–30 to 70 °C (–22 to 158 °F)|
|Operating altitude|< 3 000 m (9 840 ft) over MSL|
|Climate class|To IEC 60654-1, Class B2|
|Degree of protection|Front IP 65 / NEMA 4|
||Device casing IP 20|
|Shock and vibration|2 Hz (+3/-0) ... 13.2 Hz: ±1 mm (±0.04 in)|
|resistance|13.2 to 100 Hz: 0.7 g|
|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.|
||Maximum measured error <1% of measuring range.|
||Interference immunity as per IEC/EN 61326 series, industrial requirements.|
||Interference emission as per IEC/EN 61326 series, Class A equipment.|
|Electrical protection class|IEC 60529 (IP code) / NEMA 250|
|Condensation|Front: permitted|
||Device casing: not permitted|



Endress+Hauser 

9 

RIA452 

## Mechanical construction 

Design, dimensions 

**==> picture [387 x 141] intentionally omitted <==**

**----- Start of picture text -----**<br>
130.5 (5.14) 16.3 (0.64)<br>96 (3.78) 145 (5.71)<br>  A0028475<br> 4 Dimensions of the process indicator in mm (in)<br>)(3.7896<br>**----- End of picture text -----**<br>


**==> picture [136 x 131] intentionally omitted <==**

**----- Start of picture text -----**<br>
92 [+0.8]<br>(3.62 +0.03)<br>)<br>+0.8 +0.03<br>92 (3.62<br>**----- End of picture text -----**<br>


A0028476 _ 5 Panel cutout, dimensions in mm (in)_ 

|Weight|500 g (17.64 oz)|
|---|---|
|Materials|• Housing front: ABS plastic|
||• Housing casing: ABS GF plastic|
|Terminals|Plug-in screw terminals, clamping range 1.5 mm2(16 AWG) solid, 1 mm2(18 AWG) strand with|
||wire ferrule|



Endress+Hauser 

10 

RIA452 

## Operability 

## Local operation 

## Display elements 

**==> picture [387 x 184] intentionally omitted <==**

**----- Start of picture text -----**<br>
1 5<br>6<br>2<br>7<br>3<br>4<br>  A0028477<br>**----- End of picture text -----**<br>


- _ 6 Display elements of the process indicator_ 

- _1 Device status LEDs: green - device ready for operation; red - device or sensor malfunction_ 

- _2 Bar graph with overrange and underrange_ 

- _3 7-digit 14-segment display_ 

- _4 Unit and text field 9x77 dot matrix_ 

- _5 Relay status indicator: if power is supplied to a relay, the symbol is displayed 6 Status indicator for digital inputs_ 

- _7 Symbol for "device operation locked"_ 

- Display range 

- -99999 to +99999 for measured values 

- 0 to 9999999 for counter values 

- Signalization 

- Relay activation 

- Overrange/underrange 

## Operating elements 

Jog/shuttle dial 

## Remote operation 

## Configuration 

The device can be configured with the ReadWin 2000 PC software. 

## Interface 

CDI interface at device; connection to PC via USB box (see "Accessories") 

RS232 interface at device; connection with serial interface cable (see "Accessories") 

Endress+Hauser 

11 

RIA452 

## Certificates and approvals 

CE mark The product meets the requirements of the harmonized European standards. As such, it complies with the legal specifications of the EC directives. The manufacturer confirms successful testing of the product by affixing to it the CE-mark. Ex approval Information about currently available Ex versions (ATEX, FM, CSA. etc.) can be supplied by your Endress+Hauser sales organization on request. All explosion protection data are given in a separate documentation which is available upon request. Other standards and The manufacturer confirms compliance with all the relevant external standards and guidelines. guidelines 

Endress+Hauser 

12 

RIA452 

## Ordering information 

Detailed ordering information is available for your nearest sales organization www.addresses.endress.com or in the Product Configurator under www.endress.com : 

1. Click Corporate 

2. Select the country 

3. Click Products 

4. Select the product using the filters and search field 

5. Open the product page 

The Configuration button to the right of the product image opens the Product Configurator. 

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. 

Device-specific accessories 

|Designation|Order No.|
|---|---|
|PC configuration software ReadWin 2000 and serial configuration cable with 3.5 mm jack plug<br>for RS232 port|RIA452A-VK|
|PC configuration software ReadWin 2000 and serial configuration cable for USB port with CDI<br>connector|TXU10-AA|
|Field housing in IP65 →   7,  13|51009957|
|Current simulator active 4-20mA 1-channel, compact housing, 9V block battery|SONDST-S1|



**==> picture [327 x 143] intentionally omitted <==**

**----- Start of picture text -----**<br>
154 (6.06)<br>100 (3.94) 128 (5.04) 90 (3.54) 3x cable<br>217 (8.54) gland<br>M20x 1.5<br>236 (9.29)<br>208 (8.19)<br>**----- End of picture text -----**<br>


**==> picture [22 x 3] intentionally omitted <==**

**----- Start of picture text -----**<br>
  A0033026<br>**----- End of picture text -----**<br>


_ 7 Field housing dimensions_ 

Endress+Hauser 

13 

RIA452 

## Supplementary documentation 

- System components and data manager - solutions to complete your measuring point: FA00016K/09 

- Brief Operating Instructions for process indicator RIA452: KA00264R/09 Operating Instructions for process indicator RIA452: BA00265R/09 

- Ex-related additional documentation: ATEX II(1)GD: XA00053R/09/a3 

Endress+Hauser 

14 

www.addresses.endress.com