8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. Each 8B47 module isolates, filters, amplifies, and linearizes a single channel of temperature input from a thermocouple and provides an analog voltage output.
Linearization is accomplished using a four breakpoint piecewise linear approximation.
The 8B47 can interface to industry standard thermocouple types J, K, and T and has an output signal of 0 to +5V. Each module is cold-junction compensated to correct for parasitic thermocouples formed by the thermocouple wire and screw terminals on the mounting backpanel. Upscale open thermocouple detect is provided by an internal pull-up resistor.
Signal filtering is accomplished with a 3-pole filter optimized for time and frequency response which provides 70dB of normal-mode rejection at 60Hz. 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.
A special input circuit on the 8B47 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.
The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.
MODULE-ANALOG, LINEARIZED T'CPL,3HZ, -100 TO +300C, 0 TO +5V, J THERMOCOUPLE SENSORLEX 8B. FREE 2 YEAR RADWELL WARRANTY
| Dataforth Corporation | Radwell International | |
|---|---|---|
| Product Category | Data Acquisition | I/O Modules and Instruments |
| Product Number | 8B47J-02 | 123899726 |
| Product Name | 8B47 Linearized Thermocouple Input Modules | VDC Logic I/O Module |
| Data Acquisition | Input Module | |
| Form Factor | Modular Bay or Slot System | |
| Outputs | Analog Voltage Output | |
| User Interface | None | |
| Application | General Lab & Industrial |
