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Dual 4-20 mA Network Bridge


Price starts at $261.62

Product Code : Model 1400A

Manufacturer : Neurologic Research

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Model 1400A:    Dual 4-20 mA Network Bridge

Datasheet     XIF File


The Model 1400A is a dual 4-20 mA input network bridge.  It bridges industry standard analog 4-20 mA transmitters with LONWORKS network devices.  While the functionality of the Model 1400A is not new, its packaging allows it to essentially become part of the wiring conduit.  One side simply fastens directly into most standard 4-20 mA transmitters via their 1/2” NPT wiring entry.  The other side of the Model 1400A is a 3/4” NPT that allows attachment of any standard electrical conduit box.  This approach greatly reduces the amount of wiring and space required for interfacing 4-20 mA sensors to a LonWorks network.

Although it is very compact, the Model 1400A electronics include a central processing unit, precision sense resistors, a high-resolution analog to digital converter, and a network communication interface.  The communication interface is the FTT-10 transceiver.  This architecture allows multiple sensors to be used over a simple four-wire bus installation.  Two wires are used for power, the other are used for digital communication.

Key Features

  • Instantly integrate any standard 4-20 mA sensor into the LonWorks digital network

  • Supports loop and self powered sensors

  • Electronics are potted for environmental durability

  • Digitally calibrated for high accuracy and custom inputs

  • 1/2 inch NPT connection attaches directly to most sensor’s conduit entry

  • 3/4 inch NPT wiring conduit connection attaches to any standard wiring junction box

  • Multiple sensors multiplexed on same wires

  • All outputs available using Standard Network Variables (SNVT)

  • Compact and rugged body for durability

  • Very compact package becomes part of the wiring conduit

  • Very high resolution, 22 bits, analog inputs limited only by resolution of SNVT

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