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931 Signal Conditioners
Allen‑Bradley

Our Bulletin 931N Nano and 931S Smart signal conditioners provide a full range of options to isolate, convert, split, linearize, and amplify a broad range of signal types.
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931N-X221 Bipolar Signal Converter product image
931N-X221 Bipolar Signal Converter
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931N-X221 : Bipolar Input to Analog Output; Single Channel; 24VDC; DIP
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931N-X422 Bipolar Signal Splitter product image
931N-X422 Bipolar Signal Splitter
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931N-X422 : Bipolar Input to Configurable Analog Output; Splitter; 24VDC; DIP
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931S-C122 Analog Signal Splitter product image
931S-C122 Analog Signal Splitter
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931S-C122 : Current Input (2-/3-wire transmitter/HART, Sensor Feed) to Current Output; Splitter; 24VDC; No Config; HART Transparent
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931S-N392 Temperature Signal Converter product image
931S-N392 Temperature Signal Converter
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931S-N392 : Pt100/PTC Inpt to 2 Limit Value Relau Outputs; 20..264VAC/DC; Software Config
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931S-L521 Current Measurements Converter product image
931S-L521 Current Measurements Converter
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931S-L521 : 0...1/5/10 A AC/DC Input to Configurable Analog Output/Limit Value Relay Output; Single Channel; 24VDC; DIP&Potentiometer
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931S-U561 Universal Signal Converter product image
931S-U561 Universal Signal Converter
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931S-U561 : Universal Input to Anlaog & Digital Output; Single Channel; Output Loop Powred; Software Config
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931S-P491 Programmable Signal Converter product image
931S-P491 Programmable Signal Converter
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931S-P491 : Configurable Analog Inputs to Configurable Analog Outputs (Active or Passive); Single Channel; 24..230V AC/DC; Display/DIP/Buttons
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931N-T221 Thermocouple Signal Converter product image
931N-T221 Thermocouple Signal Converter
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931N-T221 : TC (Type J & K)/internal CJC/external CJC input to Analog Output; Single Channel; 24VDC; DIP
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931S-M5216 Current Measurements Converter product image
931S-M5216 Current Measurements Converter
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931S-M5216 : 0...40/50/60A AC/DC User configurable Input to Configurable Analog Output/Limit Value Relay Output; Single Channel; 24VDC; DIP&Potentiometer
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931N-C121 Analog Signal Converter product image
931N-C121 Analog Signal Converter
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931N-C121 : Current Input to Current Output; Single Channel; 24VDC; No Config
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931N-C122 Analog Signal Splitter product image
931N-C122 Analog Signal Splitter
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931N-C122 : Current Input to Current Output; Splitter; 24VDC; No Config
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931N-C144 Dual Channel Converter product image
931N-C144 Dual Channel Converter
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931N-C144 : Current Input to Current Output; Dual Channel; Input Loop Powered; No Config
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931N-C161 Analog Signal Converter product image
931N-C161 Analog Signal Converter
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931N-C161 : Current Input to Current Output; Single Channel; Output Loop Powered; No Config
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931N-C164 Dual Channel Converter product image
931N-C164 Dual Channel Converter
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931N-C164 : Current Input to Current Output; Dual Channel; Output Loop Powered; No Config
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931N-A221 Analog Signal Converter product image
931N-A221 Analog Signal Converter
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931N-A221 : Analog Input to Analog Output; 24VDC; Single Channel; DIP switch
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931N-R161 RTD Signal Converter product image
931N-R161 RTD Signal Converter
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931N-R161 : RTD (Pt100) Input to Current Output; Single Chanel; Output Loop Powered; DIP
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931N-R221 RTD Signal Converter product image
931N-R221 RTD Signal Converter
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931N-R221 : RTD (Pt100) Input to Analog Output; Single Chanel; 24VDC Powered; DIP
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931N-U221 Universal Signal Converter product image
931N-U221 Universal Signal Converter
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931N-U221 : Universal Input to Analog Output; Single Channel; 24VDC; Software Config
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931N-A222 Analog Signal Splitter product image
931N-A222 Analog Signal Splitter
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931N-A222 : Analog Input to Analog Output; Splitter; 24VDC; DIP Switch
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931N-C141 Analog Signal Converter product image
931N-C141 Analog Signal Converter
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931N-C141 : Current Input to Current Output; Single Channel; Input Loop Powered; No Config
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931S-V291 Power Feed Module product image
931S-V291 Power Feed Module
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931S-V291 : Configurable Voltage Input to Analog Input; Single Channel; 24..230V AC/DC; Software Configurable
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931S-V342 Voltage Monitor and Converter product image
931S-V342 Voltage Monitor and Converter
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931S-V342 : 3 Phase (200…480AC ) Input to two Limit Value Relay Outputs; Input Loop Powered; Software Configurable
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931S-V392 Voltage Monitor and Converter product image
931S-V392 Voltage Monitor and Converter
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931S-V392 : 1 Phase AC or DC (0...110; 0...240V; 0...400V) Input to two Limit Value Relay Outputs; 24..240V AC/DC; No Config
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931S-M5211 Current Measurements Converter product image
931S-M5211 Current Measurements Converter
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931S-M5211 : 0...5/10A AC/DC User Configurable Input to Configurable Analog Output/Limit Value Relay Output; Single Channel; 24VDC; DIP&Potentiometer
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Overview Chevron DownChevron Down
Allen Bradley

Our Bulletin 931N Nano and 931S Smart signal conditioners provide a full range of options to isolate, convert, split, linearize, and amplify a broad range of signal types. These products help protect your expensive control system from transients and noise while eliminating ground loop/noise-induced errors in process measurements through galvanic isolation. There are products with dual channels, input and output loop powered options. Products in these families offer excellent performance in terms of galvanic isolation, accuracy, response time, and power dissipation.

  • Offers the following Signal Types: Analog, Bipolar, Thermocouple, RTD, Linear Resistance, Potentiometer
  • Offers time savings from power DIN rail option that reduces the need for power supply wiring for each device. One feed module powers up to 75 devices
  • Offers high galvanic isolation, 2.5kV AC
  • Includes angled connection terminals which allow for easy wiring
  • Features DIP switches for easy configuration
  • Offers low power consumption for greater energy efficiency
  • Provides high accuracy (0.05%) for optimal system performance
  • Offers fast response time (less than 5/7 ms for analog signals and less than 30 ms for temperature measurements) lowering downtime
  • Simplifies troubleshooting by onboard sensor and signal error indication
  • Provides NAMUR 43 functional range, 0…23 mA enabling sensor/signal error detection

Certifications
ATEX CertificationATEX Certification
China RoHS 25China RoHS 25
FM APPROVED MarkFM APPROVED Mark
KC CertificationKC Certification
RCM CertificationRCM Certification
UL Listed CertificationUL Listed Certification
  • ATEX/IECEx Certified
  • CE Marked
  • China RoHS Compliant
  • DNV-GL Marine Certified
  • FM Approved
  • KC Certified
  • RCM Marked
  • RoHS Compliant
  • UL Listed

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details. 

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Documentation Chevron DownChevron Down
Technical Specifications Publication
Signal Conditioner Specifications 931-TD002_-EN-P
Installation Instructions Publication
Product Configuration using Device Type Manager (DTM) 931-IN024_-EN-P
Program Guides Publication
Thermocouple Application Solutions for Long Wire Runs Application Technique 931-AT002_-EN-P
Product Profiles Publication
Bulletin 931 Signal Conditioners Product Profile 931-PP001_-EN-P
Bulletin 931 Signal Conditioners Migration Solutions MIGRAT-PP041_-EN-P
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