DI-8B47 Linearized Thermocouple Input Modules

Types J, K, and T

Product Features

  • Interfaces to Thermocouple Types J, K and T
  • Linearizes Thermocouple Signal
  • High Level Voltage Outputs
  • 1500Vrms Transformer Isolation
  • ANSI/IEEE C37.90.1
  • Input Protected to 240VAC Continuous
  • 120dB CMR
  • 70dB NMR at 60Hz
  • Low Drift with Ambient Temperature
  • Accurate CJC -40°C to +85°C
  • CSA, FM, and CE Certifications Pending
  • Mix and Match Modules

Products in the Series

DI-8B Amplifiers
  • 0°C (32°F) to 760°C (1400°F)
  • J-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • -100°C (-148°F) to 300°C (572°F)
  • J-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • 0°C (32°F) to 500°C (932°F)
  • J-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • -100°C (-148°F) to 760°C (1400°F)
  • J-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • 0°C (32°F) to 1000°C (1832°F)
  • K-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • 0°C (32°F) to 500°C (932°F)
  • K-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • -100°C (-148°F) to 1350°C (2462°F)
  • K-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • 0°C (32°F) to 1200°C (2192°F)
  • K-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • -100°C (-148°F) to 400°C (752°F)
  • T-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 
DI-8B Amplifiers
  • 0°C (32°F) to 200°C (392°F)
  • T-type thermocouples
  • 3 Hz bandwidth
  • Passes DC to 3 Hz signals
  • Fully isolated
$123.00
Qty: 

DI-8B modules are an optimal solution for monitoring real-world process signals and providing high level signals to a data acquisition system. Each DI-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 DI-8B47 can interface to industry standard thermocouple type J, K, and T and has an output signal of 0V 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 three-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 DI-8B47 module provides protection against accidental connection of power-line voltages up to 240VAC.

The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.