Isolated analog signal conditioner

The 8B43 analog signal conditioner by Dataforth includes 10 modules and has a special input circuit that provides protections against accidental connection of power-line voltages up to 240 V AC.

08/09/2012


The 8B43 analog signal conditioner by Dataforth includes 10 different modules and has a special input circuit that provides protections against accidental connection of power-line voltages up to 240VAC. Courtesy: DataforthDataforth's isolated analog signal conditioner, the 8B43, interfaces to dc linear voltage displacement transducers (LVDT) which operate on a 1 0V excitation voltage and up to 2 0mA of  excitation current.

The 8B43 family includes 10 different modules with input ranges from -1 V to +1 V through -5 V to +5 V. Each module isolates, filters, and amplifies a voltage input signal, then provides an analog voltage output.

Specific 8B43 DC LVDT applications have included measuring soil sample deformation under load to determine soil strength, controlling pill weight and thickness in making tablets from medicinal powder, continuously monitoring fluid levels as part of a leak detection system (using a hydraulic oil compatible module) and replacing limit switches to ensure higher resolution on bottle inspection machinery.

Signal filtering in the 8B43 is achieved with a 5-pole filter that is optimized for time and frequency response and provides 100 dB per decade of normal-mode rejection above 1 kHz. One pole of the filter is on the field side of the isolation barrier for anti-aliasing;  the other four are on the system side.

A special input circuit provides protection against accidental connection of power-line voltages up to 240 V ac, while clamp circuits on the I/O and power terminals protect against harmful transients. Isolation is provided by transformer coupling to suppress transmission of common mode spikes or surges. The module is powered from +5 V dc, ±5%.

Designed for installation in Class I, Division 2, hazardous locations, the 8B43 offers a high level of immunity to environmental noise.

Dataforth

www.dataforth.com 

- Edited by Chris Vavra, Control Engineering, www.controleng.com 



The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
Pipe fabrication and IIoT; 2017 Product of the Year finalists
The future of electrical safety; Four keys to RPM success; Picking the right weld fume option
A new approach to the Skills Gap; Community colleges may hold the key for manufacturing; 2017 Engineering Leaders Under 40
Control room technology innovation; Practical approaches to corrosion protection; Pipeline regulator revises quality programs
The cloud, mobility, and remote operations; SCADA and contextual mobility; Custom UPS empowering a secure pipeline
Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Power system design for high-performance buildings; mitigating arc flash hazards
VFDs improving motion control applications; Powering automation and IIoT wirelessly; Connecting the dots
Natural gas engines; New applications for fuel cells; Large engines become more efficient; Extending boiler life

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
The maintenance journey has been a long, slow trek for most manufacturers and has gone from preventive maintenance to predictive maintenance.
This digital report explains how plant engineers and subject matter experts (SME) need support for time series data and its many challenges.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.
Maintenance Manager; California Oils Corp.
Associate, Electrical Engineering; Wood Harbinger
Control Systems Engineer; Robert Bosch Corp.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me