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PDF ( 数据手册 , 数据表 ) 3B47

零件编号 3B47
描述 Isolated / Linearized / Thermocouple Input
制造商 Analog Devices
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3B47 数据手册, 描述, 功能
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Isolated, Linearized, Thermocouple Input
3B47
FEATURES
Interfaces, amplifies, filters, isolates, & linearizes analog
input voltages from a J, K, T, E, R, S or B-type thermocouple
Thermocouple input signal is internally linearized
High accuracy internal cold junction compensation.
Module provides +1500 V peak of galvanic transformer-
based isolation with a common mode rejection (CMR) of 160
dB @ 50/60 Hz and a normal mode rejection (NMR) of 60 dB
@ 50/60 Hz.
All 3B47 series modules are mix-and-match and Hot
Swappable.
APPLICATIONS
Industrial signal conditioning
Industrial signal isolation
Industrial signal filtering
FUNCTIONAL BLOCK DIAGRAM
Figure 1. 3B47 Functional Block Diagram
Output modules accept 0 to +10V (or +10V) single-ended
signals and provide an isolated 4-20 mA (or 0-20 mA) process
signal. All modules feature a universal pin-out and may be
readily hot-swapped under full power and interchanged without
disrupting field wiring.
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signals to a data acquisition, monitoring or control system
without the inherent noise, non-linearity, drift and extraneous
controllers, analog recorders, dedicated control systems, and any
other applications where monitoring of temperature, pressure,
voltages. The modules are designed to directly accept analog
signals from Thermocouples, RTD’s, AC and DC Strain Gages,
flow and analog signals are required. Since each input module
features two simultaneous outputs, the voltage output can be
Torque Transducers, Frequency Transducers, LVDTs, millivolt
used to provide an input to a microprocessor-based data
or process current signals. The modules amplify, isolate,
linearize and convert the transducer output signals to
acquisition or control system while the current output can be
used for analog transmission, operator interface, or an analog
standardized analog inputs for high-level analog I/O
subsystems. The 3B Series Subsystem consists of a 10” relay
backup system.
rack with universal mounting backplane and a family of plug-in
Each input module is a single-channel signal conditioner which
(up to 16 per rack) input and output signal conditioning
plugs into a socket on the backplane and accepts its signal from
modules.
the input screw terminals. All input modules provide input
Eight and four channel backplanes are also available. Each
backplane incorporates screw terminals for sensor inputs and
current outputs and a 26-pin connector for high-level single-
ended voltage outputs to the user’s equipment.
protection, amplification and filtering of the input signal,
accuracy of +0.1%, low drift of +1 uV/ oC (low-level input
modules), and feature two high-level analog outputs that are
compatible with most process instrumentation. The isolated
input modules also provide +1500 V peak isolation.
The input modules feature complete signal conditioning
circuitry optimized for specific sensors or analog signals and
provide two simultaneous high-level analog outputs: 0 to +10V
(or +10V) and 4-20 mA (or 0-20 mA).
The choice of a specific 3B module depends upon the type of
input signal. Input modules are available to accept millivolt, volt,
process current, thermocouple, RTD, AC and DC strain gage,
frequency and LVDT inputs. The voltage output of each module
is available from the system I/O connector while the current
output is available on the output screw terminals.
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
DataSheet4Uinf.rcinogemments 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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3B47 pdf, 数据表
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3B47
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© 2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective companies.
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D05162-0-9/04(0)
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