Product Highlights

• Accepts Millivolt Level Signals
• High Level Voltage Output
• 1500Vrms Transformer Isolation
• ANSI/IEEE C37.90.1 Transient Protection
• Input Protected to 240VAC Continuous
• 100dB CMR
• 1kHz Signal Bandwidth
• ±0.05% Accuracy
• ±0.02% Linearity
• Low Drift with Ambient Temperature
• CSA, FM and CE Certifications Pending
• Mix and Match Modules

View the DI-8B Module Selection Guide

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-8B40 module isolates, filters, and amplifies a voltage input signal and provides an analog voltage output.

Signal filtering is accomplished with a multiple 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 remaining poles are on the system side.

A special input circuit on the DI-8B40 modules 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.

Isolation is provided by optical coupling to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ±5%.

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

Want to port your data into a spreadsheet or a database?

Check out our add-on software:

Ordering Information, Models, and Prices

Part Number	Description	Price (US)	DATAQ Store
DI-8B40-01	-10mV to +10mV input range.	$99	Quantity:
DI-8B40-02	-50mV to +50mV input range.	$99	Quantity:
DI-8B40-03	-100mV to +100mV input range.	$99	Quantity:
Accessories	Backplanes and Power Supplies.	N/A	Go to Accessories

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.

Knowledge Base and Common Support Issues

The Importance of Isolation

Dimensions and Pinout

Go to the Support Forum

Submit a Support Ticket