8B37K

S C 8MB 5 B SensorLex® 8BIsolated IsolatedAnalog AnalogSignal SignalConditioning ConditioningProducts Products 8B37 Non-Linearized Thermocouple 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 nonlineari ed module isolates, filters, and amplifies a single channel of temperature input from a thermocouple input signal and provides an analog voltage output (Figure 1). Features • Interfaces to Types J, K, T, R, and S Thermocouples • High-Level Voltage Output The 8B37 can interface to industry standard thermocouple types J, K, T, R, and S and has an output signal of 0 to +5V. Each module is coldjunction compensated to correct for parasitic thermocouples formed by the thermocouple wire and screw terminals on the mounting bac panel. pscale open thermocouple detect is provided by an internal pull up resistor. • 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 • ± 0.05% Accuracy • ± 0.02% Linearity A special input circuit on the 8B37 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. Low Drift with Ambient Temperature Accurate to • 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. • CE Compliant • ATEX Compliance Pending • Mix and Match Module Types on Backpanel Vref 100MΩ –EXC CJCn Thermocouple Isolation Barrier 1 (2) Jn (1) – +EXC 4 3 2 NC LPF Surge Suppression and Protection Iso-Chopper™ Amplifier Pat. Pending LPF 6 7 +V VOUT COM –V + Computer-Side Power Backpanel Terminal Block (1) CJC Enable Jumper. Remains Installed for 8B37. (2) CJCn is a thermistor mounted on the back side of the backpanel and used as a cold junction compensation sense element. F i g u r e 1 : 8 B 3 7 B l o ck +V´ –V´ 5 Isolated Field-Side Power D ia g r a m 1 1 6 ©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 Input Range Input Bias Current Input Resistance Normal Power Off Overload Input Protection Continuous(1) Transient CMV, Input to Output Transient, Input to Output CMR (50Hz or 60Hz) NMR Accuracy Linearity Stability Offset Gain Noise Output, 100kHz Bandwidth, – 3dB Response Time, 90% Span Output Range Output Protection Transient Cold Junction Compensation Accuracy, Accuracy, to , ,T Accuracy, to R,S Accuracy, to R,S Open Input Response Open Input Detection Time 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 D power Ordering Information Model TC Type‡ 8B37J J to F to F 8B37K K to F to F 240VAC ANSI/IEEE C37.90.1 8B37T T 1500Vrms max ANSI/IEEE C37.90.1 120dB 70dB at 60Hz to F to 8B37R R to F to F See Ordering Information ± 0.02% Span 8B37S S to F to F 8B37 See Ordering Information – 25nA fix ppm ppm rms 3Hz 150ms Output Range Input Range F Accuracy(2) 0V to +5V ± 0.05% . 0V to +5V ± 0.05% . 0V to +5V ± 0.05% . 0V to +5V ± 0.05% . 0V to +5V ± 0.05% . Thermocouple Alloy Combinations ‡ S ta n d a rd s : D IN IE C 5 8 4 , A N S I M C 9 6 -1 -8 2 , J IS C 1 6 0 2 -1 9 8 1 0V to +5V Continuous Short to Ground ANSI/IEEE C37.90.1 . . . . Upscale