Isolates, amplifies, linearizes, protects analog input voltages from w

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

Isolates, amplifies, linearizes, protects analog input voltages from w

Datasheet Thumbnail

Top Searches for this datasheet

Isolated, Linearized Input 3B34
Isolates, amplifies, linearizes, protects analog input voltages from wide variety two-, three- four-wire Resistor Temperature Detectors (RTDs). Module provides constant +10V bridge excitation voltage. Module provides simultaneous precision voltage current outputs linear input temperature. excitation current three-wire lead resistance compensation provide complete signal conditioning solution. Module circuitry withstand 220v input screwterminals. 3B34 series modules mix-and-match Swappable.
Figure 3B34 Functional Block Diagram
APPLICATIONS
Industrial signal conditioning Industrial signal isolation Industrial signal filtering
Output modules accept +10V +10V) single-ended signals provide isolated 4-20 0-20 process signal. modules feature universal pin-out readily hot-swapped under full power interchanged without disrupting field wiring. Analog Devices Series Signal Conditioning Subsystem designed easily handle signal conditioning problems measurement control applications. Some typical uses microcomputer-based data acquisition systems, programmable controllers, analog recorders, dedicated control systems, other applications where monitoring temperature, pressure, flow analog signals required. Since each input module features simultaneous outputs, voltage output used provide input microprocessor-based data acquisition control system while current output used analog transmission, operator interface, analog backup system. Each input module single-channel signal conditioner which plugs into socket backplane accepts signal from input screw terminals. input modules provide input protection, amplification filtering input signal, accuracy +0.1%, drift uV/oC (low-level input modules), feature high-level analog outputs that compatible with most process instrumentation. isolated input modules also provide +1500 peak isolation. choice specific module depends upon type input signal. Input modules available accept millivolt, volt, process current, thermocouple, RTD, strain gage, frequency LVDT inputs. voltage output each module available from sysem connector while current output available output screw terminals.
PRODUCT OVERVIEW
Series Signal Conditioning Subsystems provide low-cost, versatile method transferring analog transducer signals data acquisition, monitoring control system without inherent noise, non-linearity, drift extraneous voltages. modules designed directly accept analog signals from Thermocouples, RTD's, Strain Gages, Torque Transducers, Frequency Transducers, LVDTs, millivolt process current signals. modules amplify, isolate, linearize convert transducer output signals standardized analog inputs high-level analog subsystems. Series Subsystem consists relay rack with universal mounting backplane family plug-in rack) input output signal conditioning modules. Eight four channel backplanes also available. Each backplane incorporates screw terminals sensor inputs current outputs 26-pin connector high-level singleended voltage outputs user's equipment. input modules feature complete signal conditioning circuitry optimized specific sensors analog signals provide simultaneous high-level analog outputs: +10V +10V) 4-20 0-20 mA).
Rev.
Information furnished Analog Devices believed accurate reliable. However, responsibility assumed Analog Devices use, infringements patents other rights third parties that result from use. Specifications subject change without notice. license granted implication otherwise under patent patent rights Analog Devices. Trademarks registered trademarks property their respective companies.
Technology Way, P.O. 9106, Norwood, 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.326.8703 2004 Analog Devices, Inc. rights reserved.
3B34 GENERAL DESCRIPTION
3B34 single-channel signal conditioning module which amplifies, protects, filters, linearizes, isolates analog input voltages from wide variety two-, three-, four-wire Resistor Temperature Detectors (RTDs), providing simultaneous precision voltage current outputs, linear input temperature. excitation current three-wire lead resistance compensation provide complete signal conditioning solution. 3B34 protects computer side outputs from damage loss signal integrity isolating them +1500V peak shielding input excitation circuit from damage from field-side over-voltage faults 220V rms. current output withstands 130V without damage interfaces user equipment through screw terminals Series backplane. 3B34 plug-in, mix-and-match, hotswappable module, easily field calibrated front-panel zero span adjustments both voltage current outputs. Series Custom-Ranging Program Externallyprogrammable Model 3B34-00, enables user configure special input range using optional plug-on AC1310 ranging card, which houses user-supplied resistors determine zero span. facilitate selecting resistors, Windows program, 3B-CUSTOM, calculates resistor values based user-desired input/output ranges. differential chopper-stabilized low-drift input amplifier provides stable gain long-term stability. This enables very excitation current minimize self-heating preserve measurement accuracy. excitation current platinum nickel RTDs excitation current copper RTDs provided create input voltage 3B34. three-wire RTDs, excitation current flows through third lead eliminate effect lead resistance with accuracy +0.02oC/W. Internal multi-pole low-pass filtering with 3-Hz cutoff (-3dB) enhances normalmode common-mode ejection 50/60 enabling accurate measurement small signals high electrical noise. differential input circuit field side fully floating, eliminating need input grounding. Signal isolation accomplished transformer coupling using proprietary modulation technique linear, stable reliable performance. demodulator computer side signal transformer recovers original signal, which then filtered buffered provide low-noise, low-impedance output voltage; this output also drives voltage-to-current converter provide simultaneous current output interfacing versatility.
Figure
Rev. Page
3B34
3B34 Models Available
Model 3B34-00 3B34-01 3B34-02 3B34-03 3B34-04 3B34-Custom Model 3B34-C-00 3B34-C-01 3B34-C-02 3B34-Custom Model 3B34-N-00 3B34-N-01 3B34-Custom
Sensor (2,3, 4-wire) (alpha) 0.00385 (alpha) 0.00385 (alpha) 0.00385 (alpha) 0.00385 (alpha) 0.00385 (alpha) 0.00385 Sensor 3-wire) Copper, (alpha) 0.004274 Copper, (alpha) 0.004274 Copper, (alpha) 0.004274 Copper, (alpha) 0.004274 Sensor (2,3, 4-wire) Nickel, (alpha) 0.00672 Nickel, (alpha) 0.00672 Nickel, (alpha) 0.00672
Input Range Externally Programmable -100°C +100°C +100°C +200°C +600°C Input Range Externally Programmable +120°C 0°C) +120°C +25°C) Input Range Externally Programmable +300°C
Output Ranges1 Output Ranges1 Output Ranges1
Output current range user programmed using jumper supplied. Requires AC1310 ranging card. Custom Input/Output ranges available. Refer configuration guide.
3B34 Specifications (typical +25°C Power)
Description Input Ranges Standard Ranges Custom Ranges Refer Model Table -200°C +850°C (100 Platinum; 4-wire) -80°C +350°C (120 Nickel; 4-wire) -100°C +260°C Copper; 3-wire) Output Ranges Voltage Current Maximum Current Output Span 850)1 Accuracy2 Initial +25°C Nonlinearity3 ±0.1% Span ±0.05% Span Stability Temperature Model 3B34
Rev. Page
3B34
Voltage Output Zero Span Current Output4 Zero Span Zero Span Adjustment Range Input Bias Current Input Resistance
±0.02°C/°C Reading/°C
Span/°C Reading/°C Span Noise
Input, Bandwidth Output, Bandwidth Bandwidth, Output Rise Time, Span
Common-Mode Voltage (CMV)
Input-to-Output, Continuous Transient
±1500 peak, maximum ANSI/IEEE C37.90.1-1989 Common Mode Rejection (CMR)
Source Imbalance, 50/60 Normal Mode Rejection, 50/60
Sensor Excitation Current
0.25 Lead Resistance Effect
±0.02°C/ ±0.2°C/ Input Protection (Includes Excitation Currents)
Continuous Transient Voltage Output Protection Current Output Protection
maximum ANSI/IEEE C37.90.1-1989 Continuous Short Ground rms, continuous
Power Supply Voltages Supplies Rated Operation Current Sensitivity ±(11.5 16.5 ±0.01% span/V
Rev. Page
3B34
Loop Supply Rated Operation Current Sensitivity Mechanical Dimensions lout ±0.0002% span/V 3.15" 3.395" 0.775" (80.0 86.2 19.7 Environmental Temperature Range Rated Performance Storage Relative Humidity, hours Susceptibility
-25°C +85°C -55°C +85°C +60°C noncondensing ±0.5% Span error MHz, Watt,
range, typical minimum output current Includes combined effects repeatability, hysteresis, nonlinearity. Linearization conformity error ±0.05%. With respect voltage output. wide range custom zero suppression span available with 3B30-00 3B31-00 models, using AC1310 ranging card. loop power required driving current output loads 850. current output load less applied, sufficient loop power. only voltage output used, loop power required. Specifications subject change without notice
Rev. Page
3B34 CONFIGURATIONS FUNCTIONAL DESCRIPTIONS
Figure 3B34 Input Field Connections
Table Function Descriptions-
Description +EXC -EXC
Figure Model Series Module, with pin-out assignments.
CAUTION
(electrostatic discharge) sensitive device. Electrostatic charges high 4000 readily accumulate human body test equipment discharge without detection. Although this product features proprietary protection circuitry, permanent damage occur devices subjected high energy electrostatic discharges. Therefore, proper precautions recommended avoid performance degradation loss functionality.
Rev. Page
3B34 OUTLINE DIMENSIONS
Figure Outline Dimensions
Rev. Page
3B34 NOTES
2004 Analog Devices, Inc. rights reserved. Trademarks registered trademarks property their respective companies. D05115-0-9/04(0)
Rev. Page

Isolates, amplifies, linearizes, protects analog input voltages from w

Top Searches for this datasheet

Other recent searches