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7B31 Datasheet دیتاشیت PDF دانلود

دیتاشیت - Analog Devices - Isolated Voltage Input

شماره قطعه 7B31
شرح مفصل Isolated Voltage Input
تولید کننده Analog Devices 
آرم Analog Devices 


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7B31 شرح
Isolated Voltage Input
7B31
FEATURES
Interfaces, amplifies, and filters unipolar and bipolar voltage
inputs.
Module provides a precision output of either +1 V to +5 V or
0 V to +10 V, linear with temperature.
Rated to operate with a nominal +24 VDC supply.
All 7B31 series modules are mix-and-match and Hot
Swappable.
FUNCTIONAL BLOCK DIAGRAM
APPLICATIONS
Industrial signal conditioning
Industrial signal isolation
Industrial signal filtering
PRODUCT OVERVIEW
Figure 1. 7B31 Functional Block Diagram
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 of signal conditioners feature small size, low cost
The 7B Series offers up to 1500 V rms continuous common
and a wide output voltage range for a variety of applications
mode voltage isolation and 120 V rms of field wiring input
including process control and factory-floor environments. The
protection. The power supplies necessary to drive each of the
single-channel 7B modules accept inputs from a range of
individual module’s input circuitry are internally isolated,
transducers and are fully rated over the extended -40oC to www.DataSheet4U.comenabling the 7B Series modules to offer true channel-to-channel
+85oC industrial temperature range. All 7B Series modules are
isolation of the input signals.
rated for a nominal power supply input of +24 VDC; and, for
maximum flexibility, they will accept supply voltages in the +14
The modules directly accept analog signals from
VDC to +35 VDC range. The input modules, with the exception
thermocouples, RTDs, current loop powered transmitters, and
of the 7B21, provide a high-level output voltage that is factory
other process control signals. The 7B Series modules amplify,
configured for either the +1 V to +5 V or 0 V to +10 V range.
linearize, isolate, protect and convert the transducer output
The 7B21 is a unity gain, isolated input module with an
signals to standardized analog inputs for high-level analog I/O
input/output range of +10V. Output modules are available that
subsystems. The 7B Series Subsystem consists of 19-inch rack-
provide either isolated process current or isolated bipolar
compatible hardware (model AC 1363), with universal
voltage output. Model 7B39 converts either a +1 V to +5 V input
mounting backplane and a family of plug-in (up to 16 per
to a 4 to 20 mA output or a 0 V to +10 V input to a 0-20 mA
backplane) input and output signal conditioning modules. Four-
output. The input/output ranges of the 7B39 are factory
, eight-, and sixteen-channel backplanes are available. Each
configured. The 7B22 is a unity gain module that provides an
backplane incorporates screw terminals for easy power
isolated +10V output signal. All modules have a universal pin-
connections and field wiring, and includes a 25-pin D-type
out and may be readily hot-swapped under full power without
connector for interfacing the high-level single-ended voltage
disrupting field wiring. Each module accepts analog transducer
outputs to the user’s equipment. Gold-plated sockets are
signals and transfers them to a process control or factory data
provided on each channel of the backplane to ensure the
collection system without the inherent noise, non-linearity, drift
reliability of each module’s electrical connection.
and extraneous voltages which frequently accompany the
signals.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.

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