
Specs at a glance
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Input
1 x analog 4...20 mA
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Output
1 x analog 4...20 mA
Field of application
The active barrier RN221N supplies e.g. a transmitter with power, if required also in the Ex-area, and then transmits the galvanically isolated signal. With the optionally available HART® monitoring the status of the transmitter is monitored. If an error arises a relay at the RN221N sends an alarm. The relay has to be actively set back. Thus even just briefly occurring errors can be easily located.
Galvanic isolation of 4 to 20 mA current circuits
Removing large loop circuits
Powering 2 wire transmitters
Monitoring of SMART transmitters with early-warning system
Intrinsically safe sensor supply for Ex-area
Benefits
Wide range power supply, flexible power source
Compact side by side DIN rail housing
International Ex approvals; marine approval
Bidirectional HART® transmission. Communication sockets for HART® sensor setting up. Evaluation of status information from connected transmitter with HART® protocol.
Primary or secondary master operating mode, automatic selection
Sensor monitoring with early-warning system
Manual or automatic reset of the relay contact
Fundamental selection
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Simple products
- Easy to select, install and operate
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
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Technical Information (TI)
Technical information Active barrier RN221N
Active barrier with power supply for safe separation of 4 ... 20 mA current circuits
EN 08/05/200618/05/2004Language:
English
Version:
08/05/2006
File size:
702 KB
File name:
TI073ren.pdf
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Operating Instruction (BA)
Betriebsanleitung /Operating Instructions RN221N HART Diagnose
Speisetrenner RN221N mit Hilfsenergie zur sicheren Trennung von 4...20 mA Normsignalstromkreisen mit HART Diagnose Active barrierRN221N withpower supply for safe separation of 4...20 mA current circuits with HART diagnosis
EN 03/11/201002/02/200630/09/2005Language:
English
Version:
03/11/2010
File size:
797.3 KB
File name:
BA202ra3_1310.pdf
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Operating Instruction (BA)
Operating instructions RN221N
Operating instructions active barrier RN221N (VALID FROM 22.11.2000 to 02.12.2001)
EN 22/11/2000Language:
English
Version:
22/11/2000
File size:
1.1 MB
File name:
ba102ra6_1100.pdf
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Short Instruction (KA)
RN221N Brief Operating Instructions
Active barrier with power supply forsafe separation of 4...20 mA current circuits
EN 30/06/201601/02/201006/06/200503/12/2001Language:
English
Version:
30/06/2016
File size:
430 KB
File name:
KA00124RA3_1316.pdf
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Ex Safety Instruction (XA)
RN221N ATEX: II (1)GD [Ex ia] IIC Safety Instructions
Safety instructions for electrical apparatus certified for use in explosion-hazardous areas.
EN 20/04/201604/07/201220/06/200801/10/200401/09/2000Language:
English
Version:
20/04/2016
File size:
813.6 KB
File name:
XA00005RA3_1416.pdf
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Ex Safety Instruction (XA)
RN221N
[Ex ia Ga]IIC
EN 23/09/2020Language:
English
Version:
23/09/2020
File size:
422.2 KB
File name:
XA02242KEN_0120.pdf
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Ex Safety Instruction (XA)
Active barrier
RN221N JPN: [Ex ia] IIC
EN 24/09/2019Language:
English
Version:
24/09/2019
File size:
132.8 KB
File name:
XA01960KEN_0119.pdf
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Ex Safety Instruction (XA)
RN221N
FM: Control Drawing AIS, ANI 020200111
Language:
English
Version:
07/01/2005
File size:
1.4 MB
File name:
020200111.pdf
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Ex Safety Instruction (XA)
RN221N
CSA: Control Drawing AIS, ANI 020200112
Language:
English
Version:
07/01/2005
File size:
1.4 MB
File name:
020200112.pdf
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Ex Safety Instruction (XA)
Active barrier [Ex ia Ga] IIC Safety Instructions
Safety instructions RN221N EAC [Ex ia Ga] IIC
EN 31/10/201830/06/2016Language:
English
Version:
31/10/2018
File size:
122.7 KB
File name:
XA01451KEN_0218.pdf
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Certificates FM/CSA (ZD)
Control Drawing CSA IS, NI RN221N
Active barrier RN221N Installation Notes for hazardous locations
Language:
English
Version:
02/05/2002
File size:
119.6 KB
File name:
020200112.pdf
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Certificates FM/CSA (ZD)
Control Drawing FM RN221N
Installation Notes for hazardous locations for Active barrier RN221N
Language:
English
Version:
02/10/2002
File size:
105.7 KB
File name:
020200111.pdf
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Special Documentation (SD)
Functional safety manual RN221N
Functional safety manual for Active barrier RN221N
EN 04/12/201301/12/2005Language:
English
Version:
04/12/2013
File size:
1.7 MB
File name:
SD00008REN_1313.pdf
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PU (Publication)
Portfolioübersicht Systemprodukte und Datenmanager
Lösungen zur Komplettierung der Messstelle
Language:
German
Version:
10/03/2023
File size:
5.5 MB
File name:
PU01321K09DE_0422.pdf
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PU (Publication)
Portfolio Overview System products and data manager
Solutions to complete your measuring point
Language:
English
Version:
10/03/2023
File size:
5.5 MB
File name:
PU01321K09EN_0422.pdf
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PU (Publication)
Composants système et gestionnaires de données
Des solutions pour compléter vos points de mesure
Language:
French
Version:
11/02/2022
File size:
794.5 KB
File name:
PU01321K14FR _0221-BD.pdf
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PU (Publication)
Componenti di sistema e data manager
Soluzioni per il completamento del punto di misura
Language:
Italian
Version:
02/05/2019
File size:
828.5 KB
File name:
E+H_SelectionGuide_8-Seiter_IT.pdf
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Fields of Activities (FA)
Komponenty AKPiA i rejestratory ekranowe
Rozwiązania dla pętli sygnałowych
Language:
Polish
Version:
20/04/2018
File size:
10.2 MB
File name:
FA00016KPL.pdf
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Fields of Activities (FA)
コンポーネントカタログ
HAW562- HAW569- MS20- MS21- RA33- RB223- RDL10- READWIN- RH33- RIA14- RIA15- RIA16- RIA45- RIA452- RIA46- RID14- RID16- RID261- RLN22- RLN42- RMA42- RMC621- RMS621- RN22- RN221N- RN42- RNB22- RNF22- RNO22- RS33- RSG30- RSG35- RSG40- RSG45- RXO20
Language:
Japanese
Version:
29/08/2022
File size:
11.7 MB
File name:
Fa00016k33ja_2019.pdf
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Fields of Activities (FA)
Componentes de sistema y registradores
Soluciones para el lazo de control Indicadores, dispositivos de interfaz, protección contra sobretensiones, gestores de aplicaciones y energía, registradores sin papel y paquetes de software asociado para la automatización de procesos.
Language:
Spanish
Version:
20/05/2020
File size:
4.1 MB
File name:
FA00016Kes_Productos y Registradores_1918.pdf
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Fields of Activities (FA)
System Components e Data Managers
Componenti di sistema e data manager Soluzioni per il completamento del punto di misura
Language:
Italian
Version:
20/04/2018
File size:
28.1 MB
File name:
FA00016KIT_1918.pdf
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Fields of Activities (FA)
Produits système et data managers
Solutions associées
Language:
French
Version:
01/01/2019
File size:
5.8 MB
File name:
FA00016KFR-2019-ProduitsSysteme-DataManagers.pdf
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Fields of Activities (FA)
System Products and Data Managers
Solutions for the loop Indicators, interface devices, surge arresters, energy and application managers, data managers, paper less recorders and associated software packages for process automation
Language:
English
Version:
17/05/2023
File size:
14.5 MB
File name:
FA00016KEN_2323_online.pdf
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Fields of Activities (FA)
Systemprodukte und Datenmanager
Lösungen zur Komplettierung der Messstelle Anzeiger, Interfacegeräte, Überspannungsschutz, Energie- und Applikationsmanager, Datenmanager, Bildschirmschreiber und Softwarepakete für die Prozessautomatisierung
Language:
German
Version:
17/05/2023
File size:
14.5 MB
File name:
FA00016KDE_2323_online.pdf
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Case Study (CS)
application: two wire sensors needed for operating in flammable gases or dust mixtures.
RN221N is a FM certified active intrinsically safe barrier and power supply
Language:
English
Version:
01/07/2010
File size:
1011.5 KB
File name:
CS1048 RN221N active barrier and power supply.pdf
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Case Study (CS)
Mesure de niveau par radar dans des cellules de stockage étroites
Park & Bellheimer AG optimise ses procédures logistiques avec des radars de mesure de niveau ultra modernes
Language:
French
Version:
05/02/2015
File size:
648.6 KB
File name:
CS01412F14FR0115_Bellheimer_Brauerei_FR_BD.pdf
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Case Study (CS)
Caso de éxito: Bellheimer Brauerei Medición de nivel radar en silos estrechos
Park & Bellheimer AG optimiza la logística con instrumentación de nivel radar sin contacto
Language:
Spanish
Version:
05/02/2015
File size:
180 KB
File name:
CS01412F00es_0115_Bellheimer_Brauerei.pdf
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Manufacturer Declaration
Product family: Power supply and barrier
Product root: RN221N- Declaration number: HE_00448_01.17 Manufacturer specification: RoHS
Language:
English
Version:
13/03/2017
File size:
137.5 KB
File name:
HE_00448_01.17 China RoHS RN221N.pdf
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EU Declaration
Product family: Configuration Kit, Contactors/transmitters, Controller, ECO-GRAPH, MEMO-GRAPH, Mini-Log, Over voltage protector , POWER SUPPLY, POWER SUPPLY AND BARRIER, Preline, Process displays, Soliswitch
Product root: FML621-, FTE20-, FTE30-, FTE31-, HAW562-, HAW569-, OFTE20-, ORIA15-, ORIA45-, ORIA46-, ORMA42-, ORSG35-, ORS G45-, OSG40-, OSG45-, RA33-, RB223-, RDL10-, RH33-, RIA14-, RIA15-, RIA16-, RIA45-, RIA452-, RIA452L-, RIA46-, RID14-, RID16 -, RMA42-, RMC621-, RMC621L-, RMS621-, RMS621L-, RN221N-, RN221NL-, RNB130-, RNS221-,RNS221L-, RS33-, RSG35-, RSG 40-, RSG45 -, RTA421-, RTA421L-, TXU10- Declaration number: EC_00569_01.17
EN 18/10/2022Language:
English
Version:
18/10/2022
File size:
155.3 KB
File name:
EC_00569_03.22.pdf
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EU Declaration
Product family: Power supply and barrier
Product root: RN221N- Declaration number: EC_00319_01.16
EN 20/04/2016Language:
English
Version:
20/04/2016
File size:
863.8 KB
File name:
EC_00319_01.16.pdf
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