8B35-03

SensorLex® 8BIsolated IsolatedAnalog AnalogSignal SignalConditioning ConditioningProducts Products S C 8MB 5 B 8B35 Linearized 4-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 • True 4-Wire Input • Linearizes RTD Signal RTD excitation is provided from the module using a precision current source. xcitation current does not ow in the input signal leads, which allows RTD measurements to be made independently of lead resistance. The excitation currents are small (0.25mA) which minimizes self-heating of the RTD. • High-Level Voltage Outputs • 1500Vrms Isolation • ANSI/IEEE C37.90.1 Transient Protection • Input Protection to 240VAC Continuous 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. • 120dB CMR • 70dB NMR at 60Hz Low Drift with Ambient Temperature A special input circuit on the 8B35 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. • C-UL-US Listed The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise. • ATEX Compliance Pending • CE Compliant • Mix and Match Module Types on Backpanel Isolation Barrier –EXC LPF 1 CJCn Jn (1) – +EXC Iso-Chopper™ Amplifier Pat. Pending 3 Surge Suppression and Protection +V RTD –V´ (1) CJC Enable Jumper. Remove for 8B35. 5 Isolated Field-Side Power D ia g r a m 1 1 2 ©1995-2017 Dataforth Corporation, All Rights Reserved –V –V´ +V´ F i g u r e 1 : 8 B 3 5 B l o ck COM Computer-Side Power 4 Backpanel Terminal Block VOUT 7 2 + 6 Linearizer LPF 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 to 8B35 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 Accuracy Stability Offset Gain Noise Output, 100kHz Bandwidth, – 3dB Response Time, 90% Span Output Range Output Protection Transient Open Input Response +EXC, – EXC lead – IN lead +IN lead Power Supply Voltage Power Supply Current Power Supply Sensitivity 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 Ordering Information D power Model Pt Input Range Pt 8B35-01 ** See Ordering Information to F to F 8B35-02 to F to F 8B35-03 to F to F 8B35-04 to F to F Accuracy(3) 0V to +5V . 0V to +5V . 0V to +5V . 0V to +5V . RTD Standards Type ppm ppm Output Range 8 B Specifications A Pt a Coe ficient 0.00385 DIN JIS IEC DIN 43760 JIS C 1604-1989 IEC 751 rms 3Hz 150ms See Ordering Information Continuous Short to Ground ANSI/IEEE C37.90.1 Downscale, 1s Downscale, 40s Upscale, 40s +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 3 ISO9001:2008-Registered QMS