8B34-02

S C 8MB 5 B SensorLex® 8BIsolated IsolatedAnalog AnalogSignal SignalConditioning ConditioningProducts Products 8B34 Linearized 2- or 3-Wire RTD Input Modules Description 8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. ach B input module isolates, filters, amplifies, and lineari es a single channel of temperature input from an RTD and provides an analog voltage output (Figure 1). Features Interfaces to Platinum RTDs • Linearizes RTD Signal • High-Level Voltage Outputs RTD excitation is provided from the module using two matched current sources. When using a 3-wire connection, this method allows equal currents to ow through the sensor leads, canceling the effects of lead resistances.The excitation currents are small (0.25mA) which minimizes self-heating of the RTD. • 1500Vrms Isolation • ANSI/IEEE C37.90.1 Transient Protection • Input Protection to 240VAC Continuous • 120dB CMR Signal filtering is accomplished with a pole filter optimi ed for time and frequency response which provides 70dB of normal-mode rejection at H . One pole of this filter is on the field side of the isolation barrier for anti-aliasing, and the other two are on the system side. • 70dB NMR at 60Hz Low Drift with Ambient Temperature • C-UL-US Listed A special input circuit on the 8B34 module provides protection against accidental connection of power-line voltages up to 240VAC. Clamp circuits on the I/O and power terminals protect against harmful transients. • CE Compliant • ATEX Compliance Pending The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise. • Mix and Match Module Types on Backpanel Isolation Barrier Rz –EXC LPF 1 NC CJCn Jn (1) – +EXC Iso-Chopper™ Amplifier Pat. Pending 3 Surge Suppression and Protection 3-wire VOUT 7 +V 2 RTD COM –V Computer-Side Power 4 + 6 Linearizer LPF 2-wire Backpanel Terminal Block –V´ –V´ +V´ –V´ (1) CJC Enable Jumper. Remains Installed for 8B34. F i g u r e 1 : 8 B 3 4 B l o ck 5 Isolated Field-Side Power D ia g r a m 1 1 0 ©1995-2017 Dataforth Corporation, All Rights Reserved For information call 800-444-7644 ISO9001:2008-Registered QMS Power Oscillator 7 +5VDC COM 8 B SensorLex® 8B Isolated Analog Signal Conditioning Products Typical❇ at TA and Module Ordering Information D power to 8B34 Input Range Limits Input Resistance Normal Power Off Overload Input Protection Continuous(1) Transient 240VAC ANSI/IEEE C37.90.1 Sensor Excitation Current Lead Resistance Effect CMV, Input to Output Transient, Input to Output CMR (50 or 60Hz) NMR 0.25mA (2) . 1500Vrms max ANSI/IEEE C37.90.1 120dB 70dB at 60Hz Model Pt Accuracy Stability Offset Gain Noise Output, 100kHz Bandwidth, – 3dB Response Time, 90% Span See Ordering Information Output Range Output Protection Transient Open Input Response Open Input Detection Time See Ordering Information Continuous Short to Ground ANSI/IEEE C37.90.1 Downscale 1s Mechanical Dimensions (h)(w)(d) Environmental Operating Temperature Range Storage Temperature Range Relative Humidity Emissions EN61000-6-4 Radiated, Conducted Immunity EN61000-6-2 RF ESD, EFT Pt 8B34-01 ** F 8B34-02 to F to F 8B34-03 to F to F 8B34-04 to F to F Accuracy(3) 0V to +5V . 0V to +5V . 0V to +5V . 0V to +5V . RTD Standards A Pt rms 3Hz 150ms Output Range to F to Type ppm ppm Power Supply Voltage Power Supply Current Power Supply Sensitivity Input Range 8 B Specifications a Coe ficient 0.00385 DIN JIS IEC DIN 43760 JIS C 1604-1989 IEC 751 +5VDC ± 5% 25mA ± 75ppm/% 1.11” x 1.65” x 0.40” (28.1mm x 41.9mm x 10.2mm) to to 0 to 95% Noncondensing ISM, Group 1 Class A ISM, Group 1 Performance A ± 0.5% Span Error Performance B NOTES : ❇ ontact factory or your local Dataforth sales office for maximum values. A between Input terminal and Input, , or terminals. A between Input and or terminals. A between and terminals. refers to the resistance in one lead. Includes conformity, hysteresis and repeatability. Installation Notes: . This uipment is Suitable for se in lass I, Division , Groups A, B, , D, or Non-Hazardous Locations Only. . ARNING xplosion Ha ard Substitution of Any omponents ay Impair Suitability for lass I, Division . 3.) WARNING - Explosion Hazard - Do Not Disconnect Equipment Unless Power Has Been Switched Off or The Area is nown to be Non Ha ardous. Visit our website www.dataforth.com ©1995-2017 Dataforth Corporation, All Rights Reserved 1 1 1 ISO9001:2008-Registered QMS