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7B37 Datasheet دیتاشیت PDF دانلود

دیتاشیت - Analog Devices - Thermocouple Input

شماره قطعه 7B37
شرح مفصل Thermocouple Input
تولید کننده Analog Devices 
آرم Analog Devices 


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7B37 شرح
Isolated, Thermocouple Input
7B37
FEATURES
Interfaces, amplifies, and filters input voltages from a J, K, T,
E, R, S, or B-type thermocouple.
Module provides a precision output of either +1 V to +5 V or
0 V to +10 V, linear with temperature.
High accuracy internal cold junction compensation.
All 7B37 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. 7B37 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
+85oC industrial temperature range. All 7B Series modules
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are
enabling
isolation
the 7B Series modules
of the input signals.
to
offer
true
channel-to-channel
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 pin-
out 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
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 rack-
compatible hardware (model AC 1363), with universal
mounting backplane and a family of plug-in (up to 16 per
backplane) input and output signal conditioning modules. Four-
, eight-, and sixteen-channel backplanes are available. Each
backplane incorporates screw terminals for easy power
connections and field wiring, and includes a 25-pin D-type
connector for interfacing the high-level single-ended voltage
outputs to the user’s equipment. Gold-plated sockets are
provided on each channel of the backplane to ensure the
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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