Dataforth 8b47k-13 Linerarized Isolated Type K Thermocouple I/o Module

US $85

  • New Iberia, Louisiana, United States
  • Oct 23rd
DataForth Linerarized Isolated Type K Thermocouple Input I/O Module Model: 8B47K-13 Input: -100 degrees C to +1250 degrees C Output: 0 V to +5 Volt New Old Stock, in plastic wrapper.  One unit removed to make photos.  Surface scratches to product label.  Aerospace manufacturer surplus. Per the DataForth website: 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.

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