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7B34 Dataheets PDF



Part Number 7B34
Manufacturers Analog Devices
Logo Analog Devices
Description Linearized RTD Input
Datasheet 7B34 Datasheet7B34 Datasheet (PDF)

Isolated, Linearized RTD Input 7B34 FEATURES Amplifies, Protects, Filters, and interfaces input voltages from a wide variety of two and three-wire platinum, copper and nickel Resistor Temperature Detectors (RTDs). Module provides a precision output of either +1 V to +5 V or 0 V to +10 V, linear with temperature. All 7B34 series modules are mix-and-match and Hot Swappable. FUNCTIONAL BLOCK DIAGRAM APPLICATIONS Industrial signal conditioning Industrial signal amplification Industrial signal filt.

  7B34   7B34



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Isolated, Linearized RTD Input 7B34 FEATURES Amplifies, Protects, Filters, and interfaces input voltages from a wide variety of two and three-wire platinum, copper and nickel Resistor Temperature Detectors (RTDs). Module provides a precision output of either +1 V to +5 V or 0 V to +10 V, linear with temperature. All 7B34 series modules are mix-and-match and Hot Swappable. FUNCTIONAL BLOCK DIAGRAM APPLICATIONS Industrial signal conditioning Industrial signal amplification Industrial signal filtering Figure 1. 7B34 Functional Block Diagram PRODUCT OVERVIEW The 7B Series of signal conditioners feature small size, low cost and a wide output voltage range for a variety of applications including process control and factory-floor environments. The single-channel 7B modules accept inputs from a range of transducers and are fully rated over the extended -40oC to www.DataSheet4U.com +85oC industrial temperature range. All 7B Series modules are rated for a nominal power supply input of +24 VDC; and, for maximum flexibility, they will accept supply voltages in the +14 VDC to +35 VDC range. The input modules, with the exception of the 7B21, provide a high-level output voltage that is factory configured for either the +1 V to +5 V or 0 V to +10 V range. The 7B21 is a unity gain, isolated input module with an input/output range of +10V. Output modules are available that provide either isolated process current or isolated bipolar voltage output. Model 7B39 converts either a +1 V to +5 V input to a 4 to 20 mA output or a 0 V to +10 V input to a 0-20 mA output. The input/output ranges of the 7B39 are factory configured. The 7B22 is a unity gain module that provides an isolated +10V output signal. All modules have a universal pinout and may be readily hot-swapped under full power without disrupting field wiring. Each module accepts analog transducer signals and transfers them to a process control or factory data collection system without the inherent noise, non-linearity, drift and extraneous voltages which frequently accompany the signals. The modules feature a maximum nonlinearity of +0.02% and are factory calibrated to guarantee a maximum accuracy specification of +0.1%. The 7B Series offers up to 1500 V rms continuous common mode voltage isolation and 120 V rms of field wiring input protection. The power supplies necessary to drive each of the individual module’s input circuitry are internally isolated, enabling the 7B Series modules to offer true channel-to-channel isolation of the input signals. The modules directly accept analog signals from thermocouples, RTDs, current loop powered transmitters, and other process control signals. The 7B Series modules amplify, linearize, isolate, protect and convert the transducer output signals to standardized analog inputs for high-level analog I/O subsystems. The 7B Series Subsystem consists of 19-inch rackcompatible hardware (model AC 1363), with universal mounting backplane and a family of plug-in (up to 16 per bac.


6B50-2 7B34 8ETU04


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