Isolated Industrial Signal Conditioning Thermocouple Amplifier for Temperature Applications

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

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.

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Part #	Input Range	Accuracy*	Price	Order
DI-8B47J-01 Type J	0°C to +760°C (+32°F to +1400°F)	±1.82°C	$113	Quantity:
DI-8B47J-02 Type J	-100°C to +300°C (-148°F to +572°F)	±0.96°C	$113	Quantity:
DI-8B47J-03 Type J	0°C to +500°C (+32°F to +932°F)	±1.05°C	$113	Quantity:
DI-8B47J-12 Type J	-100°C to +760°C (-148°F to +1400°F)	±2.10°C	$113	Quantity:
DI-8B47K-04 Type K	0°C to +1000°C (+32°F to +1832°F)	±2.40°C	$113	Quantity:
DI-8B47K-05 Type K	0°C to +500°C (+32°F to +932°F)	±1.05°C	$113	Quantity:
DI-8B47K-13 Type K	-100°C to +1350°C (-148°F to +2462°F)	±3.60°C	$113	Quantity:
DI-8B47K-14 Type K	0°C to +1200°C (+32°F to +2192°F)	±2.88°C	$113	Quantity:
DI-8B47T-06 Type T	-100°C to +400°C (-148°F to +752°F)	±2.40°C	$113	Quantity:
DI-8B47T-07 Type T	0°C to +200°C (+32°F to +392°F)	±0.75°C	$113	Quantity:
Accessories	Backplanes and Power Supplies.		N/A	Go to Accessories

*Includes conformity, hysteresis, and repeatability. Does not include CJC accuracy.

Note: Pricing outside the U.S. will be higher to account for shipping, taxes, duty, currency fluctuation, local warranty and technical support in your country.
DI-8B Signal Conditioners have typical lead times of 2 weeks ARO.

View the DI-8B Module Selection Guide

Compatible Products

	DI-788 Features 32 channels designed specifically for DI-8B modules, 14-bit resolution, and up to 180 kHz sample throughput rate.
	DI-718B Data Logger Features 8 channels designed specifically for DI-8B modules, 14-bit resolution, up to 10 kHz sample throughput rate, and a stand-alone data logger option.
	DI-718Bx Data Logger Features 16 channels designed specifically for DI-8B modules, 14-bit resolution, up to 10 kHz sample throughput rate, and a stand-alone data logger option.
	DI-78B Backpack 8B module expansion device for DI-720, DI-722, and DI-730 instruments featuring 8 channels designed specifically for DI-8B modules

	Try out our NEW data acquisition and data logger product screener for help choosing the right product for your application
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